Profits from scrap
Date: 2016-08-08T00:00:00+00:00
Keywords: Storage batteries; Lead

The Project Gutenberg eBook of Profits from scrap

This ebook is for the use of anyone anywhere in the United States and most other parts of the world at no cost and with almost no restrictions whatsoever. You may copy it, give it away or re-use it under the terms of the Project Gutenberg License included with this ebook or online at www.gutenberg.org. If you are not located in the United States, you will have to check the laws of the country where you are located before using this eBook.

Title: Profits from scrap

Author: Chicago American Bureau of Engineering

Release date: August 8, 2016 [eBook #52754]
Most recently updated: October 23, 2024

Language: English

Credits: Produced by Richard Tonsing and the Online Distributed
Proofreading Team at http://www.pgdp.net (This file was
produced from images generously made available by The
Internet Archive)

*** START OF THE PROJECT GUTENBERG EBOOK PROFITS FROM SCRAP ***

Transcriber's Note:

The cover image was created by the transcriber and is placed in the public domain.

PROFITS
—FROM—
SCRAP

Published by

American Bureau of Engineering, Inc.

2632 Prairie Avenue - CHICAGO, ILL., U. S. A.

Four Principal Activities
of the
American Bureau of Engineering, Inc.

The phenomenal growth of this Institution is due to the fact that it has, from the start, anticipated the needs for authoritative information and adequate shop equipment to take care of the ELECTRICAL side of the automotive and allied industries.

It has four active divisions:

1.

A Bureau of Electrical Engineering, consulted by automobile manufacturers, dealers and by technical schools and colleges throughout the world.

2.

A Publishing House, employing the highest authorities to compile text books and Ready Reference Manuals relating to the electrical equipment of Automobiles, Trucks, Tractors, and Farm Lighting Plants.

3.

A Manufacturing and Sales Organization for supplying up-to-date shop equipment to the Battery and Electrical Service Stations.

4.

An Electrical School, operating this branch under the name of “AMBU ENGINEERING INSTITUTE.” This school is conducted so that a student can attend classes in Chicago, or complete instruction in Automotive Electricity can be obtained in the Home Study Course.

American Bureau of Engineering, Inc.
General Offices
AMBU BUILDING - 2632 Prairie Avenue
CHICAGO, ILLINOIS

Mr. Battery Repairman

Before reading the following pages, Mr. Batteryman, just stop a few minutes and take a good look around your shop. You know your business, certainly or you would not have a shop, but are you operating in a way to make the greatest profit?

When you stop to think it over, are not some of your methods rather crude? Haven't you often thought, when you were doing some disagreeable job, that there ought to be a better and quicker way? Haven't you often wished that you knew how to turn that rapid accumulation of “junk” parts into real money?

The American Bureau of Engineering is not trying to tell you how to run your business, but we are trying to help you realize a greater profit by showing you some “better” methods.

Lead moulding is but one of many ways that spare time and material, usually junked, can be turned into profit.

Every piece of equipment we mention has been carefully developed in our own shop, every method recommended is one which we have found, by actual experience to be best for the purpose described.

A strict observance of the instructions will save you all the experimenting we have done and save you many disappointments. If for any reason our instructions do not produce the results you think they should, remember it is a pleasure for our Engineers to help you solve your personal difficulties.

AMERICAN BUREAU OF ENGINEERING

President.

Copyright 1922

American Bureau of Engineering, Inc.

Chicago, Ill.

Profits From Scrap

In his every day work, the storage battery service man must deal chiefly with three materials, wood, rubber and lead.

The wooden parts, such as boxes and separators are pretty well standardized, can be purchased at reasonable prices and are used solely for replacements. It would not pay the battery man to equip his shop to manufacture any of these items.

Figure 1

The same is true of the rubber parts, the jars and top covers. A dozen different sizes in stock will take care of nearly all the various makes and models of batteries which come in for repair.

With the lead parts, however, the conditions are entirely different. All the active and wearing parts are made of lead, or its compounds, and practically every battery that needs repair, needs some of them replaced. Then again there is a much greater variety in the design of these parts and the up-to-date shop, in order to give real service, must carry a large assorted stock of end connectors, connector straps, plate straps and posts.

In speaking of lead parts, however, the plates are to be considered on the same basis as the rubber parts or wooden boxes, because it would not pay the ordinary battery shop to try and cast grids, mix paste and manufacture plates. It is much more satisfactory to purchase plates made by a responsible manufacturer who has the facilities and capital to properly develop his formulae and processes.

Every battery that has to be opened must have the top connectors drilled off as in Fig. 1, which naturally makes a lot of lead chips. These drillings have to be cleaned off before proceeding with the repair and can, with no loss of time, all be collected, as in Fig. 2, and saved. Then the old sulphated end connectors and parts from “junked” batteries accumulate very fast.

Figure 2

This then is the situation—The battery service station is constantly in need of new lead parts. Should they be obtained from a manufacturer at a price that includes material, labor and the manufacturer's profit—OR—should equipment be purchased that will permit of moulding these same parts from the accumulated scrap lead at a cost of nothing but the time employed in pouring, with no cost for material and no “Profits” added?

No matter how cheap you think you are buying your lead parts, just compare the market price per pound on lead with the weight of a few of your “cheapest” ones.

It is now common practice to melt some of this accumulation of scrap lead and pour it into sticks or bars for use in lead burning on repair work. A great amount, especially old groups, is generally sold at a low price in order to get it out of the way. The one important fact, and one generally overlooked, is, that the battery man who melts lead and moulds it into sticks for lead burning, certainly is able to melt the same metal and mould it into the lead parts he requires, provided, of course, that he has the proper moulds.

Many a wide awake man has whittled a wooden mould for some part that he wanted in a hurry and couldn't wait for the manufacturer to deliver. Naturally this condition, really an effort to render service to the customer, created a demand for moulds of a permanent character.

In an effort to supply this demand, the moulds that have been produced were all made for some individual part, were light in weight and easily became overheated, making them hard to handle and often burning the workman's hands.

Figure 3

From a business standpoint, it would certainly be mighty profitable for a battery shop to be able at a moment's notice, to convert junk lead into new salable parts. In addition to the large profit from the sale of these new parts, another good feature, is that, instead of tieing up a lot of capital in stock, the new parts can be made as needed, without a cent of investment.

From a service standpoint, it is a cheaper and faster process to cast a new top connector than to spend a lot of valuable time, whittling an old one so that it can be used again.

How much time have you or your men wasted cleaning up an old terminal as in Fig. 3, so that you could burn it on again?

All new connectors and terminals put on a rebuilt or reinsulated job make the customer feel that he is getting a real repair. He sees a new finished job.

From an electrical standpoint, the new parts mean better work, because better burning can be done, certainly a new connection will allow the battery to deliver more current than an old partly sulphated one could ever do.

CAN YOU MAKE GOOD LEAD CASTINGS?

The question that naturally comes up is, can the ordinary battery man make good lead castings? We will answer “Yes,” very emphatically. There is nothing mysterious about the work and all the talk of alloys, compounds and formulae does not mean a great deal.

Pure lead is not hard or rigid enough to make good battery parts, therefore, it is necessary to add some other metal that will provide the strength, not be affected by the acid and not increase the resistance electrically. Antimony has all the necessary qualities, and is, therefore, commonly used by mixing it with the pure lead.

Figure 4

The various manufacturers recommend from 2 to 12 percent antimony, as the proper combination, but in buying new pig lead for castings, a 4 percent antimony compound is very satisfactory.

In using old battery lead, however, due to chemical action the proportion of antimony is apt to be too high to produce perfect castings. This usually shows up by cracks or shrinkage, as in Figure 4. To overcome this trouble, pure lead is added, until a perfect casting is made. Pure lead can be purchased (in the form of bars, lead pipe, or sheet lead) from a manufacturer such as the National Lead Company—your accessory jobber, the local plumber, or the junk dealer. When buying from a junk dealer, however, care must be taken that there is no solder or tin present.

PREPARATION OF THE LEAD

In order to pour the lead some means of melting and a proper container must be provided.

As pure lead melts at about 620°F., and antimony at 785°F., an ordinary gas flame will furnish sufficient heat. For the small shop, without an artificial gas supply, a plumber's furnace which can be secured from Hardware Jobber or Plumber Jobber will work satisfactorily. See page 19 for gas melting pots.

An ordinary cast iron solder pot will be found the most suitable container. It should be about 8 inches in diameter.

It is advisable to obtain as large a pot as above, because for steady pouring a sufficient supply of melted metal should always be available. Then too, the constant addition of scrap or pig lead in a small pot will often change the proportion of antimony so that the castings crack and have to be melted over again.

Wash the pot thoroughly with gasoline or kerosene to remove all traces of oil. Then after it has been carefully dried, put it over the flame and heat it gradually. Do this before putting in any lead.

The only other equipment necessary to handle the melted lead is a ladle. For this purpose a malleable iron melting ladle five inches in diameter should be purchased. It can be used for stirring, skimming and pouring, and the type with a spout, illustrated in Fig. 5 will be found most suitable. The ladle should be cleaned and treated exactly like the melting pot.

Figure 5

The scrap or pig lead can now be put in the pot and melted. It is a time saving plan to pick out carefully all the pieces of wood, rubber and sealing compound from the scrap lead before it is put in the pot. Old plates are not worth while melting, but a lot of good lead can be salvaged by sawing the strap and post off old groups. Above all things make sure that no wet parts or moisture of any kind ever gets into the lead pot.

CLEANING THE LEAD

As the lead melts most of the dross or dirt will come to the top and float. When all the pieces are melted stir the lead with the ladle and then skim off all the dirt.

To help the cleaning process a piece of paraffin can be dropped into the pot. After it has burned, the dross is more easily skimmed off.

Another method of cleaning is to add to every ten pounds of metal, one teaspoonful of equal parts of powdered rosin, borax and flour of sulphur. Stir this compound in a little and when the lead is at the proper temperature there will be a flare, flash or a little burning. A sort of tinfoil popcorn effect will be noticed floating on top of the metal. Continue stirring until this melts down and then skim off the soft particles.

An easy way to test the temperature of the melted lead is to insert the end of a pine stick for a moment. When the wood blackens or burns, the lead is hot enough to pour.

Whenever the lead is in melted form and exposed to the air, as in the iron pot, there will be a slight oxidation take place which appears as a yellowish-red scum. Do not confuse this with the dross and dirt which is to be skimmed off, but if the scum gets thick, then skim it off before pouring any of the metal.

PREPARING THE MOULD

One of the greatest difficulties in making lead castings has been to get the metal to completely fill the mould. There are several reasons for this, but they can easily be overcome.

If the mould, which is generally made of iron, is very cold, it will chill the melted lead and cause it to become solid before it has reached all parts.

The surface of a cast iron mould is very porous, and the melted lead, partially entering the pores of the iron, is held back long enough to chill and set.

To remedy these faults, it is sometimes advisable to heat the mould in order to get perfectly shaped castings.

To close the pores of the iron moulds they are sometimes “smoked” with a flame like that of “Prest-O-Lite” gas or else dusted with graphite.

Figure 6

The AMBU mould compound has been developed to eliminate the necessity for heating or smoking the mould—it remedies all the pouring troubles and in addition, has chemical ingredients that aid in preventing the mould from rusting. AMBU mould compound is placed in a little sack, contained in each can, and the surface of the mould dusted with the sack, as shown in Figure 6.

The compound completely fills the pores of the iron, produces perfect castings with a cold mould and prevents the finished part from sticking. It does not wear off as quickly as the “smoke,” and dusting from time to time, while castings are being made will produce a high polish on the mould surface which will result in even better castings.

The mould in Figure 6 is the new AMBU Washburn combination link mould, which casts 15 parts, being reversible much like the ordinary “waffle iron.” The side being “dusted” casts four top connectors of different lengths.

POURING THE LEAD

Placing the mould as in Figure 7, the lead is poured in the four openings until the metal projects slightly above the top.

To pour properly first skim the dross as previously explained, then with the ladle, push the film of oxide away and dip into the clean pure lead. Pour steadily until the mould is filled and the metal projects slightly above the top. As it cools there will be quite a little contraction which takes up most of the excess lead.

Figure 7

Never, under any conditions, stop pouring with a mould partially filled. Always be sure there is enough melted lead in the ladle to completely fill the mould, before starting to pour.

The mould can now be easily opened by pulling on the handles especially if it has been properly dusted with the Ambu Mould Compound.

After the mould is opened, Figure 8, the castings are easily removed, without damage to either the mould or the casting proper. The workman does not, at any time, handle the hot parts of the mould or the hot castings.

Figure 8

The mould weighs 25 pounds, and is large enough to absorb sufficient heat to allow continuous pouring without becoming overheated. It is solid enough to be used without the need of a vise.

IMPORTANT INSTRUCTIONS

In all lead moulding, there are several important points to remember:

1. Never put anything in the lead pot that is not perfectly dry. A few drops of water in a pot of melted lead will cause an explosion and the hot lead will be thrown all over the shop burning and perhaps blinding the workman.

2. Have all moulds clean and dry.

3. Keep the melted lead in the lead pot clean at all times.

4. Always completely fill each mould at one pouring.

5. Dust moulds well with Ambu mould compound before pouring.

6. When castings “shrink” and crack, add pure lead to that in the pot until the trouble is remedied.

7. Be sure melted lead is of proper temperature, by pine stick test, before starting to pour.

8. Remove castings as soon as they set, to prevent the mould from becoming too hot.

9. A perfect casting, that breaks when taken out of the mould, has probably not been allowed sufficient time to “set” or cool properly.

10. Never use a hammer on the surface of the mould. If a casting should stick, pry it out.

AMBU COMBINATION LINK MOULD

Using both sides, this mould casts five of the most used connectors for all batteries, using Standard Jars, 7-9-11-13-15 Plate four end connectors (two Dodge Tapers and two Standard Tapers, Negative and Positive), one end connector, ⅜-inch wire leed used on 12-volt Maxwell and other cars using wire leed. One small wire leed to connect with end post on storage battery requiring direct connection. Post support rings, which fit the two sizes standard rubber covers; also fit perfectly all posts cast with our post mould. Two handy washers that sometimes are badly needed when installing a new or rent battery.

Figure 8A[1]

Extra taper plugs can be furnished, also extra bushings for different size cable. Standard equipment as furnished includes four taper plugs, one large and one small cable bushing.

The top connectors most frequently replaced are the taper end connections and end connections with wire cable leads. For battery men desiring these parts, but not the large combination link mould, the AMBU-Washburn terminal mould, Figure 9, has been designed. It has the same general good features of the larger mould, and casts four end connectors, one wire cable leed and two washers.

Figure 9[1]

AMBU POST STRAP MOULD

Perhaps the most expensive item of a stock in a battery station, is the supply of positive and negative groups. While two or three sizes of plates will fit practically every battery, each size battery requires a different size of group.

Figure 10[1]

The AMBU-Washburn Post Strap Mould has been developed in order that a comparatively small stock of plates can be instantly available for making any size of group. You will notice in Figure 10, that the same features, as those of the link mould of Figure 8 are used, namely; a large substantial base, no need of handling hot parts and the easy removal of castings. All parts of the moulds are carefully machined to produce perfect castings and the patented movable tooth rack will make odd or even numbers of teeth on the post strap. The teeth are correctly spaced for all standard batteries, or by reversing the tooth rack, blank posts can be cast.

Two bushings, bored and reamed for standard size posts, are furnished, but special bushings are available making it possible to cast any type of post strap.

AMBU PRODUCTION POST STRAP MOULD

For the large shop or manufacturer, the AMBU-Washburn Post Strap Mould, is made with the special indexing feature of Figure 11. This is easily adjustable and will cast straps of both odd and even numbers of teeth for 7 to 19 plate groups. Otherwise its construction and appearance is the same as Figure 10.

Both of these moulds are made for real use and will turn out three perfect castings per minute. This unusual speed can be maintained because the castings are easily removed. In Figure 10, the upper part of the mould is resting on a part of the handle made for that purpose and a slight blow on a hardwood stick, on the top of the post, will drop the casting instantly.

Figure 11[1]

AMBU CELL CONNECTOR MOULD

The AMBU-Washburn Cell Connector Mould is a combination mould which will cast practically all of the cell connectors used on standard storage batteries, 7-11-13 and 15 plate, such as the Exide, Willard, U. S. L., Vesta, Philadelphia and other nationally known batteries. Its design is similar to our Link Combination Mould.

Made of fine gray iron, carefully machined. Castings are easily removed, and it is heavy enough so that it will not overheat where speed is required.

Figure 12

After re-insulating or repairing, the job looks more complete and satisfactory to your customer if the battery is furnished with a new set of connectors. Use your scrap lead and make new connectors for each job. It pays.

AMBU SCREW MOULD

The lead capped screws of the taper type terminal are another of the frequently replaced parts. Although the round knurled head type is no longer installed, a great many men still use pliers on the square head terminal screws with the result that the soft square lead head is damaged to such an extent that a tight connection cannot be made.

The AMBU-Washburn Screw Mould, Figure 13, will cast standard square edged heads on four screws in one operation, two 5⁄16-inch and two ⅜-inch. It has screw adjustments in the base, making it adaptable to any length screw.

Figure 13[1]

As the finished screws are removable from the top, the position of the mould is not changed while in use and castings can be made at the rate of 12 screws a minute.

AMBU LEAD STICK MOULD

In order to properly burn in and assemble the new lead parts, it is necessary that they be fused and new lead added, and this requires that a supply of lead sticks be available. These are usually made by melting the smaller particles of scrap and junk lead which is cast in convenient size.

The Ambu Mould, Figure 14, is especially designed for this purpose. It is made of heavy sheet iron, die stamped into grooves and mounted on a wooden base with a strong wooden handle at one end. A heavy pad of asbestos is placed under the iron to protect the wood.

Figure 14[1]

This construction allows the lead to completely fill the grooves before cooling, but prevents the mould from becoming exceedingly hot with constant pouring. A pair of these moulds will keep one workman busy, as he pours one, the other is cooling. This eliminates all waiting and waste of time.

The sticks made are 15 inches long, 5⁄16 inch thick, ⅜ inch wide at the top and ¼ inch at the bottom. In pouring in an open mould of this type, pour the lead in each groove at one end, so that the dross will all gather in one spot. Never move the ladle along the groove when pouring, as this will scatter the dross and make the entire stick dirty.

When poured at one end only, a short length of the stick may be broken off, thus removing all the dross.

Dusting the mould occasionally with Ambu mould compound will produce better castings and permit greater speed in the work.

AMBU PLATE BURNING RACK

The building of groups, even after the plates and post straps are secured is a job that requires quite a lot of skill. Before the plates can be burned to the strap, they must be absolutely parallel, must be the correct distance apart, and the top surface of the strap must be at right angles to the surface of the plates.

The Ambu Plate Burning Rack, Figure 15, has been designed to easily secure the proper conditions. It consists of a wooden base with six different sets of slots properly spaced which cares for 98% of the batteries on the market. The guide bar or “comb” on top is slotted to match up with the base. (See figure 15.)

Figure 15[1]

The positions of the base and comb are so arranged that the plates are securely held on opposite corners, at exactly the right distance apart and are absolutely straight and parallel.

The wooden base prevents the plate proper from coming in contact with any metal and thus eliminates any possibility of later trouble due to impurities in the cell.

Figure 16[1]

In order to accommodate the different sizes and spacings, the comb can be adjusted vertically and the slots are arranged in groups of different spacings. These adjustments are flexible enough to allow the setting up of practically all the various groups used in the different makes and type of batteries.

Special fittings are provided so that after the plates and post are properly set a form can be built on the comb which not only locks the plates in the comb but prevents the hot lead from running off while burning and makes the finished strap of exactly the proper dimensions to properly fit into the jar.

For use in the smaller shop the small Ambu Plate Burning Rack, Figure 16, is recommended. It has all the features of the larger rack but the spacings of the combs limit it to the 7⁄64" and ⅛" spacings such as are found in all the popular batteries.

1.  Prices, page 17

AMBU POST BUILDERS

After the top connectors have been drilled off and the group is to be reassembled in the repaired battery, in order to make a good quick weld to the top strap, the post must be built up to its original height.

Figure 17. See bottom of page

The Ambu Post Builders, Figure 17, have been built to speed up the post building process. They are made of high grade steel and are of the proper size to rebuild all the standard battery posts.

Simply place the proper Ambu Post Builder on the stub post, and burn in molten lead to the proper height. The construction is such that the post builder is easily removed, leaving a new and perfectly sized post for burning to the cell connector.

The set of ten, illustrated in Figure 17, covers all standard makes of batteries.

Following are prices of equipment illustrated in preceding pages
which may be purchased from the Battery Appliance Division, American Bureau of Engineering, Inc., 2632 Prairie Avenue, Chicago, or from your Jobber.

Adjustable Screw Mould (Fig. 13) | $12.50
Battery Post Builders. Set of Ten (Fig. 17) | 2.00
Ladle for Pouring Lead and Sealing Compound (Fig. 17) | 2.75
Lead Stick Moulds (Fig. 14). (Pair, $2.75), each | 1.50
Link Combination Mould (Fig. 8A) complete | 35.00
Mould Compound for making castings “come clean” (Fig. 6) | .50
Plate Burning Rack, Large Type “B” (Fig. 15) | 8.75
Plate Burning Rack, Small Type “A” (Fig. 16) | 5.95
Post Strap Mould (Fig. 10) complete | 18.00
Production Post Strap Mould (Fig. 11) complete | 35.00
Terminal Mould (Fig. 9) complete | 9.85

HELPS for the Service Station

Johnson Direct-jet Lead Melting Pots

No. 300

No. 8

In line with our desire to serve the Battery Service Stations of the country, we have arranged to offer the Johnson Direct-jet Gas-fired Melting Pots. These furnaces use either natural or manufactured gas. They embody a special patented Gas-regulator which permits of a quick change in the size of the gas orifice, by the turn of a wrench.

This Regulator throws a sharp, clean jet of gas straight up the center of the mixing tube, giving the nearest approach to 100% combustion that can be imagined.

No Blowers or Forced Draft are necessary. City gas pressure is enough.

No. 300 Pot. Melts 150 lbs. lead at a charge, using only 40 cubic feet of city gas per hour. Has 3 Direct-jet Burners. No forced draft necessary. Height, 28 inches; weight, 100 lbs. Price f. o. b. Cedar Rapids, Iowa, $25.00. Stock No. MJP1.

No. 8 Combined Torch and Pot. Melts 25 lbs. of lead at a charge. Height, 14 inches; weight, 9½ lb. Single adjustable burner, with pilot. Can be used as an efficient hand torch. Consumes 20 to 25 cubic feet of gas per hour. Price complete with 6 inch Pot, as shown, f. o. b. Cedar Rapids, Iowa, $9.00. Stock No. MJP2.

Send orders to
BATTERY APPLIANCE DIVISION
AMERICAN BUREAU OF ENGINEERING, INC.
2632 Prairie Avenue
Chicago, Ill.

PRICES SUBJECT TO CHANGE WITHOUT NOTICE

PRODUCTS that MAKE MONEY and SAVE TIME FOR BATTERY REPAIR SHOPS

Battery Steamers

Softens sealing compound on batteries. Within less than five minutes prepares them so that elements can be easily removed.

Automatic valve regulates water supply. Steam is quickly produced. Saves time and fuel cost.

For use with gas, gasoline, kerosene or electric stoves. Has six outlets and adjustable valve for opening the required number of outlets.

For Battery Men desiring to steam one or more batteries at one time, depending upon their size, we offer the Type “A” Steamer with Steaming Box.

AMBU CONDENSER FOR DISTILLING WATER, accompanies either type Steamer, if desired. When Steamer is not being used for steaming batteries, and when used in conjunction with this Condenser, will produce about one gallon of distilled water per hour at very small cost.

Type “B” Ambu Steamer complete with Condenser |
Type “B” Ambu Steamer without Condenser | Prices
Type “A” Ambu Steamer complete with Condenser | on
Type “A” Ambu Steamer without Condenser | request
Ambu Condenser for Distilling Water |

Battery Plate Press

Three Groups of Plates Pressed at One Time

With the Ambu Plate Press there is no possibility of iron, the greatest enemy of a battery, touching the plates.

In discharged negative plates, the active material is bulged out and must be pressed back flush with the grids before the plates can be used again.

The Ambu Battery Plate Press is made of heavy hardwood timber with two horizontal wooden jaws between which the battery plates are pressed. A set of lead covered troughs carries away the acid. The upper jaw of the press is attached to a screw shaft for raising or lowering it. A complete set of transite boards for placing between the plates, and a substantial wall support are included in the purchase price. Press complete, including set of press separator boards sufficient to press three groups, and substantial wall support. Price on request.

Ambu Press Separator Boards in sets as above also may be purchased separately. Price on request.

Compound and Lead Ladle

A ladle that will permit of pouring sealing compound into the small openings between top covers or jars without spilling or slopping over top of battery. With the special center drain controlled by taper pin with touch of your thumb you are able to control the flow of sealing compound from the stream as fine as a pin to a stream as thick as your thumb.

Designed also for pouring lead, and has many advantages over ordinary ladle.

Made of forged malleable iron, extra deep, with two lips in addition to center spout, four inches in diameter. Price on request.

PRODUCTS that MAKE MONEY and SAVE TIME FOR BATTERY REPAIR SHOPS

Battery Test Set

Consisting of a high grade accurate voltmeter with two scales, permitting readings as high as 25 volts; Cadmium Leads, and Pair discharge prods and leads. With this complete set all tests necessary to determine the inside condition of a battery can be made, except those obtained through hydrometer readings. Sold as a complete set or as individual units. Price on request.

Battery Carrier

The AMBU Battery Carrier, designed to make the carrying of batteries easy, as well as the removing and placing of batteries in cars. An unusually handy tool around a shop. Made of a hardwood handle with a swinging steel arm at each end, to which is attached a strong steel lock for engaging the handles of a battery box. Sold singly or in pairs.

Prices on request.

Battery Turntable

Designed to make the handling of a battery on the work bench easy. Permits getting at all sides of the battery with least amount of effort.

Made of two stout pieces of hard wood pivoted to each other and mounted on ball bearings. It is also handy for working on heavy generators and starting motors.

Price on request.

Write for Catalog M-53 Helps for Battery Men

HELPS for the Service Station

Torch

For Lead Burning, Soldering, Brazing
USING PREST-O-LITE GAS AND
COMPRESSED AIR

This torch produces a soft pointed flame. Especially adapted for all torch uses in repairing of storage batteries. Can be nosed into post builder; stirring molten lead with nose of torch without popping out. Not affected by wind. Burns clean, requiring heat up to 5300 degrees Fahrenheit.

The torch operates on Prest-o-lite Gas and Compressed Air. Tank attachment on Mixing Valve is easily adapted to A, B or E size Prest-o-lite tank. Air derived from any air line furnishing 20 lbs. pressure or over. Small air tank with foot pump can be used. Needle point flame instantly adjustable through a range of 4000 degrees without changing tip. The most economical, efficient and time saving torch on the market doing the same class of work.

Complete Outfit Consists of:

1 Torch
1 Soldering Iron Attachment
Hose connections
1 Mixing Valve (Tank Attachment)
2 Six-foot Hose Lengths
1 Prest-o-lite Tank Key

Price on request.

RADIATOR SOLDERING ATTACHMENTS

These attachments are great time savers in the repairing of radiators, giving the operator a combination open flame and soldering iron in repairing tubular and honeycomb radiators.

Sold only for use with the Ambu Washburn Torch.

Electric Solder Iron

Works wherever there is a storage battery, on the car, in the shop or garage.

Furnished complete with wires, clamps, supply of carbon tips, wire solder and solder paste. Ready to use.

Handy for quick soldering jobs.

Is not necessary to wait fifteen minutes, nor even one minute to get it hot—IT HEATS UP INSTANTLY. Cannot burn out—no parts to break. No current wasted when not in use. Price on request.

Ford Standard Electrical Equipment

SERVICE MANUAL ON FORD STARTING, LIGHTING AND IGNITION

Covers F-A or Liberty Electrical System now standard equipment now put on the Ford car at the factory.

Each unit is described in detail and illustrated by internal and external wiring diagrams.

Complete instruction is also given on the location and correction of starting, lighting, and ignition troubles.

Tells how to adjust the generator. Explained so clearly and simply that even the inexperienced can make necessary repairs or adjustments. No mechanic or owner who attempts repairs on this system can afford to be without this authoritative book.

Printed on high grade enameled paper with flexible binding—150 pages—49 illustrations.

Money back if not satisfied and book is returned within five days.

Price delivered | $2.00

Write for Catalog M-53 Helps for Battery Men

HELPS for the Service Station

AMBU Service Manuals

Containing both internal and external wiring diagrams, test and performance data.

Illustrates each type of starting motor, generator, cut-out or regulator by large diagrams. Shows field coils, brushes and connections exactly as they should be. Internal diagram of generator, also shows wiring of cut-out or regulator, ammeter and battery on same page, thus giving clear diagram of entire charging circuit.

Prepared so that you can instantly find information you desire. Car Equipment Tables give name of car, model, year, make of equipment, type of generator, its regulation, type of starting motor, and instantly gives you description, test data, setting of generator, the drive, test data and description of starting motor. A separate list is also given of each make and type of generator and starting motor so that if you do not know the car model but have the number or type of generator or starting motor, the information is easily found.

Contains also a Battery Table, furnishing make, type, voltage, ampere hour capacity, dimensions and order number of battery used on each particular car.

Each book is printed on strong kraft paper, in a beautiful flexible binding, containing over 600 pages.

Ambu 1920-21 Service Manual} |
Ambu 1918-19 Service Manual} | $5.75 Each
Ambu 1916-17 Service Manual} |

The Automobile Storage Battery

Its Care and Repair

(Over 30,000 copies sold since first edition released)

COMPLETE READY REFERENCE FOR BATTERY MEN

It gives complete information on what a storage battery is, how to take care of it, the tools required, the right shop equipment, proper charging methods, best repair methods, etc.

There are 400 pages written in easy-to-understand language, profusely illustrated with diagrams and photographic reproductions that bring out the text matter clearly. The theory, manufacture and maintenance are explained in detail, also complete instructions given on the efficient management and operation of a battery repair shop.

This book is recognized as the most complete and authoritative treatise on the automobile storage battery that has ever been published.

Guaranteed satisfactory or money refunded, if book is returned within five days after receipt.

Price, delivered | $5.00

Write for Catalog M-53 Helps for Battery Men

PRICES SUBJECT TO CHANGE WITHOUT NOTICE

A Simple System that Locates Electrical Trouble Quickly, Efficiently, Unfailingly

Makes starting, lighting, ignition and battery repair work definite, accurate, more profitable. Eliminates all guesswork, groping in the dark, trusting to luck methods. Provides the necessary and essential testing equipment for auto electric repair in one compact, portable efficient system.

Brings You More Business, More Profits

Thousands of garages, repair shops, battery and electric service stations are adding hundreds of dollars and new customers through the use of the AMBU system. Millions of car owners know of the worlds and worlds of trouble the electric equipment of a car is giving. They are seeking the shop well equipped and that KNOWS HOW. With the AMBU System and a knowledge of electricity your ability to handle electrical repair work is never in doubt. AMBU enables you to locate trouble in ONE SIXTH the time usually required and far more efficiently.

Makes You the Electrical Master of Over 1300 Models

With between 600 and 700 different types of starting, lighting, ignition and battery equipment used in over 1,300 makes and models of cars, no man can even expect to know their details—regulation—rates of charge, discharge, motor and generator, test data, etc. The AMBU System supplies these bewildering details, quickly, easily and accurately. No matter what is wrong—The AMBU System shoots the trouble and never fails.

An Official AMBU Franchise Brings You Prestige and Profits

To secure a franchise for an Official Ambu Service Station is to have greater prestige and earn more and bigger profits. Automobile owners from Coast to Coast know that the Official Ambu Service Station sign on a garage, repair shop, battery or electrical Service Station stands for the highest degree of efficiency in electrical repair work. To maintain this reputation AMBU Franchises are given with care. If you are not now qualified—we have a plan that will give you the necessary knowledge.

Most auto troubles are found in the electric equipment; and require hours of searching; from the commutator to the battery and back again. Equip yourself to eliminate this useless searching and make the big profits. The cost of AMBU is a trifling detail compared to its tremendous earning power. You can pay as you earn on our deferred payment plan if you choose.

AMBU Specific Details And Plans Win Customers

The free test day plan brings new customers to you at once. The monthly test card assures you a steady number of permanent customers and a fixed income. Motorists pay you in advance for monthly testing service and give you all repair work. You circularize the car owners in your community with letters, mailings, literature and selling ideas supplied free by us. We help you build your business bigger, better and more profitable.

Write To-day For Full Information

Not a single minute to lose. Write now for further facts. Act Quick.

American Bureau of Engineering, Inc.

2632 Prairie Avenue - - - CHICAGO, ILL.

HELPS for the Service Station

AMBU Battery Tester

FOR AUTO OR RADIO STORAGE BATTERIES
A Quick Seller For Your Accessory Department
RED, WHITE AND GREEN BALLS
TELL SPECIFIC GRAVITY OF BATTERY SOLUTION

Simplest, most efficient and easiest to read battery tester ever yet offered to the battery owner. Unlike any hydrometer or tester on the market. Instead of the glass float used on ordinary hydrometers, which are hard to read and understand, it has three balls, colored red, white and green which tell the whole story.

Astonishingly simple to test a battery with it, because the following jingle regarding the three balls, and the positions they assume in the electrolyte or liquid tells the story—

“Floats all three, battery is charged fully.

Sinks the white, charge still right,

Sinks the green, charge is lean,

Sinks the red, charge is dead.”

A battery can be tested with it with as much accuracy as any hydrometer on the market. The specific gravity of each ball is accurate to the fourth decimal point. It can be “read” in semi-darkness.

Is only 6½ inches long and designed so that it can be carried in the tool box where it is Always Handy—A mighty big value for only 75c.

Furnished to the Dealer in an attractive counter display box, one dozen to each package. When placed on the counter it sells itself.

Write for dealers' prices and details on this fast selling article.

PRICES SUBJECT TO CHANGE WITHOUT NOTICE

AND NOW—

You have been reading how to increase the profits of your shop through the use of materials previously wasted. There is another way of stopping leaks and increasing earnings. That is by making the best possible use of every man's time.

In this connection we would like to tell you briefly about the activities of the Educational Division of the American Bureau of Engineering, Inc.

This institution foresaw the need of providing instruction on fundamental electricity, ignition, starting and lighting and storage batteries, so that garage owners, foremen, general repair men and mechanics could handle electrical repair jobs at a profit.

Here in Chicago we are offering an eight weeks' course of forty-four hours per week, devoted to intensive instruction in theory and practical shop work. This training enables the student to become an expert in this highly specialized field, fitting him to supervise the work of other mechanics or to operate a shop of his own as an expert in Automotive Electrical Repairs.

For those unable to leave their employment and come to Chicago, we have developed a series of Home Study problems and solutions which have proved interesting and practical. Lesson schedules can be arranged to suit the individual student. Close personal cooperation aids the Home Study student in making satisfactory progress.

The two methods of instruction are identical with the exception that the Resident Student gets actual practice in addition to theory.

Through our other activities we are able to keep in close touch with the situation and be certain that the instruction offered is strictly up-to-date and practical.

In writing for catalogue PLEASE ADVISE if you want information of study in Chicago or study at home

American Bureau of Engineering, Inc.

Dept. LM

2632 Prairie Avenue - - CHICAGO, ILL.

We graduate some excellent Automotive Electricians.

If in need of a man WRITE US.

AMBU PRODUCTS

Are Time Savers and Money Savers
Tried and Proven by Years of Use
That's Why the Careful
Buyer Insists on

AMBU PRODUCTS

TRANSCRIBER'S NOTES

1. Silently corrected simple spelling, grammar, and typographical errors.

2. Retained anachronistic and non-standard spellings as printed.

*** END OF THE PROJECT GUTENBERG EBOOK PROFITS FROM SCRAP ***

Updated editions will replace the previous one—the old editions will be renamed.

Creating the works from print editions not protected by U.S. copyright law means that no one owns a United States copyright in these works, so the Foundation (and you!) can copy and distribute it in the United States without permission and without paying copyright royalties. Special rules, set forth in the General Terms of Use part of this license, apply to copying and distributing Project Gutenberg™ electronic works to protect the PROJECT GUTENBERG™ concept and trademark. Project Gutenberg is a registered trademark, and may not be used if you charge for an eBook, except by following the terms of the trademark license, including paying royalties for use of the Project Gutenberg trademark. If you do not charge anything for copies of this eBook, complying with the trademark license is very easy. You may use this eBook for nearly any purpose such as creation of derivative works, reports, performances and research. Project Gutenberg eBooks may be modified and printed and given away—you may do practically ANYTHING in the United States with eBooks not protected by U.S. copyright law. Redistribution is subject to the trademark license, especially commercial redistribution.

START: FULL LICENSE

THE FULL PROJECT GUTENBERG LICENSE

PLEASE READ THIS BEFORE YOU DISTRIBUTE OR USE THIS WORK

To protect the Project Gutenberg™ mission of promoting the free distribution of electronic works, by using or distributing this work (or any other work associated in any way with the phrase “Project Gutenberg”), you agree to comply with all the terms of the Full Project Gutenberg™ License available with this file or online at www.gutenberg.org/license.

Section 1. General Terms of Use and Redistributing Project Gutenberg™ electronic works

1.A. By reading or using any part of this Project Gutenberg™ electronic work, you indicate that you have read, understand, agree to and accept all the terms of this license and intellectual property (trademark/copyright) agreement. If you do not agree to abide by all the terms of this agreement, you must cease using and return or destroy all copies of Project Gutenberg™ electronic works in your possession. If you paid a fee for obtaining a copy of or access to a Project Gutenberg™ electronic work and you do not agree to be bound by the terms of this agreement, you may obtain a refund from the person or entity to whom you paid the fee as set forth in paragraph 1.E.8.

1.B. “Project Gutenberg” is a registered trademark. It may only be used on or associated in any way with an electronic work by people who agree to be bound by the terms of this agreement. There are a few things that you can do with most Project Gutenberg™ electronic works even without complying with the full terms of this agreement. See paragraph 1.C below. There are a lot of things you can do with Project Gutenberg™ electronic works if you follow the terms of this agreement and help preserve free future access to Project Gutenberg™ electronic works. See paragraph 1.E below.

1.C. The Project Gutenberg Literary Archive Foundation (“the Foundation” or PGLAF), owns a compilation copyright in the collection of Project Gutenberg™ electronic works. Nearly all the individual works in the collection are in the public domain in the United States. If an individual work is unprotected by copyright law in the United States and you are located in the United States, we do not claim a right to prevent you from copying, distributing, performing, displaying or creating derivative works based on the work as long as all references to Project Gutenberg are removed. Of course, we hope that you will support the Project Gutenberg™ mission of promoting free access to electronic works by freely sharing Project Gutenberg™ works in compliance with the terms of this agreement for keeping the Project Gutenberg™ name associated with the work. You can easily comply with the terms of this agreement by keeping this work in the same format with its attached full Project Gutenberg™ License when you share it without charge with others.

1.D. The copyright laws of the place where you are located also govern what you can do with this work. Copyright laws in most countries are in a constant state of change. If you are outside the United States, check the laws of your country in addition to the terms of this agreement before downloading, copying, displaying, performing, distributing or creating derivative works based on this work or any other Project Gutenberg™ work. The Foundation makes no representations concerning the copyright status of any work in any country other than the United States.

1.E. Unless you have removed all references to Project Gutenberg:

1.E.1. The following sentence, with active links to, or other immediate access to, the full Project Gutenberg™ License must appear prominently whenever any copy of a Project Gutenberg™ work (any work on which the phrase “Project Gutenberg” appears, or with which the phrase “Project Gutenberg” is associated) is accessed, displayed, performed, viewed, copied or distributed:

This eBook is for the use of anyone anywhere in the United States and most other parts of the world at no cost and with almost no restrictions whatsoever. You may copy it, give it away or re-use it under the terms of the Project Gutenberg License included with this eBook or online at www.gutenberg.org. If you are not located in the United States, you will have to check the laws of the country where you are located before using this eBook.

1.E.2. If an individual Project Gutenberg™ electronic work is derived from texts not protected by U.S. copyright law (does not contain a notice indicating that it is posted with permission of the copyright holder), the work can be copied and distributed to anyone in the United States without paying any fees or charges. If you are redistributing or providing access to a work with the phrase “Project Gutenberg” associated with or appearing on the work, you must comply either with the requirements of paragraphs 1.E.1 through 1.E.7 or obtain permission for the use of the work and the Project Gutenberg™ trademark as set forth in paragraphs 1.E.8 or 1.E.9.

1.E.3. If an individual Project Gutenberg™ electronic work is posted with the permission of the copyright holder, your use and distribution must comply with both paragraphs 1.E.1 through 1.E.7 and any additional terms imposed by the copyright holder. Additional terms will be linked to the Project Gutenberg™ License for all works posted with the permission of the copyright holder found at the beginning of this work.

1.E.4. Do not unlink or detach or remove the full Project Gutenberg™ License terms from this work, or any files containing a part of this work or any other work associated with Project Gutenberg™.

1.E.5. Do not copy, display, perform, distribute or redistribute this electronic work, or any part of this electronic work, without prominently displaying the sentence set forth in paragraph 1.E.1 with active links or immediate access to the full terms of the Project Gutenberg™ License.

1.E.6. You may convert to and distribute this work in any binary, compressed, marked up, nonproprietary or proprietary form, including any word processing or hypertext form. However, if you provide access to or distribute copies of a Project Gutenberg™ work in a format other than “Plain Vanilla ASCII” or other format used in the official version posted on the official Project Gutenberg™ website (www.gutenberg.org), you must, at no additional cost, fee or expense to the user, provide a copy, a means of exporting a copy, or a means of obtaining a copy upon request, of the work in its original “Plain Vanilla ASCII” or other form. Any alternate format must include the full Project Gutenberg™ License as specified in paragraph 1.E.1.

1.E.7. Do not charge a fee for access to, viewing, displaying, performing, copying or distributing any Project Gutenberg™ works unless you comply with paragraph 1.E.8 or 1.E.9.

1.E.8. You may charge a reasonable fee for copies of or providing access to or distributing Project Gutenberg™ electronic works provided that:

- • You pay a royalty fee of 20% of the gross profits you derive from the use of Project Gutenberg™ works calculated using the method you already use to calculate your applicable taxes. The fee is owed to the owner of the Project Gutenberg™ trademark, but he has agreed to donate royalties under this paragraph to the Project Gutenberg Literary Archive Foundation. Royalty payments must be paid within 60 days following each date on which you prepare (or are legally required to prepare) your periodic tax returns. Royalty payments should be clearly marked as such and sent to the Project Gutenberg Literary Archive Foundation at the address specified in Section 4, “Information about donations to the Project Gutenberg Literary Archive Foundation.”

- • You provide a full refund of any money paid by a user who notifies you in writing (or by e-mail) within 30 days of receipt that s/he does not agree to the terms of the full Project Gutenberg™ License. You must require such a user to return or destroy all copies of the works possessed in a physical medium and discontinue all use of and all access to other copies of Project Gutenberg™ works.

- • You provide, in accordance with paragraph 1.F.3, a full refund of any money paid for a work or a replacement copy, if a defect in the electronic work is discovered and reported to you within 90 days of receipt of the work.

- • You comply with all other terms of this agreement for free distribution of Project Gutenberg™ works.

1.E.9. If you wish to charge a fee or distribute a Project Gutenberg™ electronic work or group of works on different terms than are set forth in this agreement, you must obtain permission in writing from the Project Gutenberg Literary Archive Foundation, the manager of the Project Gutenberg™ trademark. Contact the Foundation as set forth in Section 3 below.

1.F.

1.F.1. Project Gutenberg volunteers and employees expend considerable effort to identify, do copyright research on, transcribe and proofread works not protected by U.S. copyright law in creating the Project Gutenberg™ collection. Despite these efforts, Project Gutenberg™ electronic works, and the medium on which they may be stored, may contain “Defects,” such as, but not limited to, incomplete, inaccurate or corrupt data, transcription errors, a copyright or other intellectual property infringement, a defective or damaged disk or other medium, a computer virus, or computer codes that damage or cannot be read by your equipment.

1.F.2. LIMITED WARRANTY, DISCLAIMER OF DAMAGES - Except for the “Right of Replacement or Refund” described in paragraph 1.F.3, the Project Gutenberg Literary Archive Foundation, the owner of the Project Gutenberg™ trademark, and any other party distributing a Project Gutenberg™ electronic work under this agreement, disclaim all liability to you for damages, costs and expenses, including legal fees. YOU AGREE THAT YOU HAVE NO REMEDIES FOR NEGLIGENCE, STRICT LIABILITY, BREACH OF WARRANTY OR BREACH OF CONTRACT EXCEPT THOSE PROVIDED IN PARAGRAPH 1.F.3. YOU AGREE THAT THE FOUNDATION, THE TRADEMARK OWNER, AND ANY DISTRIBUTOR UNDER THIS AGREEMENT WILL NOT BE LIABLE TO YOU FOR ACTUAL, DIRECT, INDIRECT, CONSEQUENTIAL, PUNITIVE OR INCIDENTAL DAMAGES EVEN IF YOU GIVE NOTICE OF THE POSSIBILITY OF SUCH DAMAGE.

1.F.3. LIMITED RIGHT OF REPLACEMENT OR REFUND - If you discover a defect in this electronic work within 90 days of receiving it, you can receive a refund of the money (if any) you paid for it by sending a written explanation to the person you received the work from. If you received the work on a physical medium, you must return the medium with your written explanation. The person or entity that provided you with the defective work may elect to provide a replacement copy in lieu of a refund. If you received the work electronically, the person or entity providing it to you may choose to give you a second opportunity to receive the work electronically in lieu of a refund. If the second copy is also defective, you may demand a refund in writing without further opportunities to fix the problem.

1.F.4. Except for the limited right of replacement or refund set forth in paragraph 1.F.3, this work is provided to you ‘AS-IS’, WITH NO OTHER WARRANTIES OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO WARRANTIES OF MERCHANTABILITY OR FITNESS FOR ANY PURPOSE.

1.F.5. Some states do not allow disclaimers of certain implied warranties or the exclusion or limitation of certain types of damages. If any disclaimer or limitation set forth in this agreement violates the law of the state applicable to this agreement, the agreement shall be interpreted to make the maximum disclaimer or limitation permitted by the applicable state law. The invalidity or unenforceability of any provision of this agreement shall not void the remaining provisions.

1.F.6. INDEMNITY - You agree to indemnify and hold the Foundation, the trademark owner, any agent or employee of the Foundation, anyone providing copies of Project Gutenberg™ electronic works in accordance with this agreement, and any volunteers associated with the production, promotion and distribution of Project Gutenberg™ electronic works, harmless from all liability, costs and expenses, including legal fees, that arise directly or indirectly from any of the following which you do or cause to occur: (a) distribution of this or any Project Gutenberg™ work, (b) alteration, modification, or additions or deletions to any Project Gutenberg™ work, and (c) any Defect you cause.

Section 2. Information about the Mission of Project Gutenberg™

Project Gutenberg™ is synonymous with the free distribution of electronic works in formats readable by the widest variety of computers including obsolete, old, middle-aged and new computers. It exists because of the efforts of hundreds of volunteers and donations from people in all walks of life.

Volunteers and financial support to provide volunteers with the assistance they need are critical to reaching Project Gutenberg™’s goals and ensuring that the Project Gutenberg™ collection will remain freely available for generations to come. In 2001, the Project Gutenberg Literary Archive Foundation was created to provide a secure and permanent future for Project Gutenberg™ and future generations. To learn more about the Project Gutenberg Literary Archive Foundation and how your efforts and donations can help, see Sections 3 and 4 and the Foundation information page at www.gutenberg.org.

Section 3. Information about the Project Gutenberg Literary Archive Foundation

The Project Gutenberg Literary Archive Foundation is a non-profit 501(c)(3) educational corporation organized under the laws of the state of Mississippi and granted tax exempt status by the Internal Revenue Service. The Foundation’s EIN or federal tax identification number is 64-6221541. Contributions to the Project Gutenberg Literary Archive Foundation are tax deductible to the full extent permitted by U.S. federal laws and your state’s laws.

The Foundation’s business office is located at 809 North 1500 West, Salt Lake City, UT 84116, (801) 596-1887. Email contact links and up to date contact information can be found at the Foundation’s website and official page at www.gutenberg.org/contact

Section 4. Information about Donations to the Project Gutenberg Literary Archive Foundation

Project Gutenberg™ depends upon and cannot survive without widespread public support and donations to carry out its mission of increasing the number of public domain and licensed works that can be freely distributed in machine-readable form accessible by the widest array of equipment including outdated equipment. Many small donations ($1 to $5,000) are particularly important to maintaining tax exempt status with the IRS.

The Foundation is committed to complying with the laws regulating charities and charitable donations in all 50 states of the United States. Compliance requirements are not uniform and it takes a considerable effort, much paperwork and many fees to meet and keep up with these requirements. We do not solicit donations in locations where we have not received written confirmation of compliance. To SEND DONATIONS or determine the status of compliance for any particular state visit www.gutenberg.org/donate.

While we cannot and do not solicit contributions from states where we have not met the solicitation requirements, we know of no prohibition against accepting unsolicited donations from donors in such states who approach us with offers to donate.

International donations are gratefully accepted, but we cannot make any statements concerning tax treatment of donations received from outside the United States. U.S. laws alone swamp our small staff.

Please check the Project Gutenberg web pages for current donation methods and addresses. Donations are accepted in a number of other ways including checks, online payments and credit card donations. To donate, please visit: www.gutenberg.org/donate.

Section 5. General Information About Project Gutenberg™ electronic works

Professor Michael S. Hart was the originator of the Project Gutenberg™ concept of a library of electronic works that could be freely shared with anyone. For forty years, he produced and distributed Project Gutenberg™ eBooks with only a loose network of volunteer support.

Project Gutenberg™ eBooks are often created from several printed editions, all of which are confirmed as not protected by copyright in the U.S. unless a copyright notice is included. Thus, we do not necessarily keep eBooks in compliance with any particular paper edition.

Most people start at our website which has the main PG search facility: www.gutenberg.org.

This website includes information about Project Gutenberg™, including how to make donations to the Project Gutenberg Literary Archive Foundation, how to help produce our new eBooks, and how to subscribe to our email newsletter to hear about new eBooks.

Table of Contents

- PROFITS —FROM— SCRAP

- Four Principal Activities of the American Bureau of Engineering, Inc.

- Mr. Battery Repairman

- Profits From Scrap

- CAN YOU MAKE GOOD LEAD CASTINGS?
- PREPARATION OF THE LEAD
- CLEANING THE LEAD
- PREPARING THE MOULD
- POURING THE LEAD
- IMPORTANT INSTRUCTIONS
- AMBU COMBINATION LINK MOULD
- AMBU POST STRAP MOULD
- AMBU PRODUCTION POST STRAP MOULD
- AMBU CELL CONNECTOR MOULD
- AMBU SCREW MOULD
- AMBU LEAD STICK MOULD
- AMBU PLATE BURNING RACK
- AMBU POST BUILDERS

- TRANSCRIBER'S NOTES

- THE FULL PROJECT GUTENBERG LICENSE