Part 2 — HERE IS YOUR LIST OF HELPING HAND BOOKS FOR MECHANICS

WRITTEN SO ALL CAN UNDERSTAND THEO. AUDEL & C^o. PUBLISHERS 72 FIFTH AVE. N.Y. CITY

AT LAST! SIMPLICITY AND EFFICIENCY (MAKING ELECTRICITY EASY TO UNDERSTAND)

These Guides will answer your ELECTRICAL questions and difficulties, showing you how to approach an electrical problem in the most direct way, to analyze it without loss of time or effort, to discover its parts, and solve your electrical question or difficulty. To get results you must know the facts. Do you wish to know the underlying principle of Modern Electrical Practice? The marvelous growth and progress in this line have and are creating many opportunities.

Hawkins Practical Library of ELECTRICITY

IN HANDY POCKET FORM PRICE $1 EACH

They are not only the best, but the cheapest works published on Electricity, guaranteed in every way or your money will be returned. The numbers will be supplied separately when desired for $1 each.

Read table of contents.

1. Contains 348 pages, 388 illustrations. Electrical signs and Symbols. Static and Current Electricity. Primary Cells. Conductors and Insulators. Resistance and Conductivity. Magnetism. Induction Coils. Dynamo Principles. Classes of Dynamos. Field Magnets. Armatures. Windings. Commutation. Brushes. Brush Gear.

2. Contains 348 pages, 394 illustrations. Motor Principles. Armature reaction. Motor Starting. Calculations. Brake Horsepower. Selection and Installation of Dynamos and Motors. Galvanometers. Standard Cells. Current Measurement. Resistance Measurement. Voltmeters. Wattmeters. Watt Hour Meters. Operation of Dynamos. Operation of Motors, Etc.

3. Contains 300 pages, 423 illustrations. Distribution Systems. Wires and Wire Calculations. Inside Wiring. Outside Wiring. Underground Wiring. Wiring of Buildings. Sign Flashers. Lightning Protection. Storage Battery. Rectifiers. Storage Battery Systems, Etc. Boosters.

4. Contains 270 pages, 379 illustrations. Alternating Current Principles. Alternating Current Diagrams. A. C. Calculations. The Power Factor. Alternator Principles. Alternator Construction. Windings, Etc. Grouping of Phases. Turbine Alternators.

5. Contains 320 pages, 614 illustrations. Alternating Current Motors. Synchronous and Induction Motor Principles. A. C. Commutator Motors. Induction Motors. Transformers, Losses, Construction, Connections, Tests. Converters, Rotary, Voltage Regulation, Frequency Changing sets, Parallel Operation. Cascade Converters. Rectifiers, Mechanical, Electrolytic, Electromagnetic. Alternating Current Systems.

6. Contains 298 pages, 472 illustrations. Alternating Current Systems. Switching Devices. Circuit Breakers. Relays. Lightning Protection Apparatus. Regulating Devices. Synchronous Condensers. Indicating Devices. Meters. Power Factor Indicators. Wave Form Measurement. Switchboards, Etc.

7. Contains 316 pages, 379 illustrations. Alternating Current Wiring. A. C. Wiring Calculations. Table: Properties of Copper Wire. Power Stations. Hydro-Electric Plants. Isolated Plants. Sub-Station Management. Turbines. Selection, Location, Erection, Running, Care and Repair, Station Testing. Telephones. Principles and Construction. Various Systems. Wiring Diagrams. Telephone Troubles.

8. Contains 332 pages, 436 illustrations. Telegraph. Simultaneous Telegraphy and Telephony. Wireless Principles, Construction, Diagrams. Electric Bells. Electric Lighting. Illumination. Photometry, Etc.

9. Contains 322 pages, 627 illustrations. Electric Railways. R. R. Signal Work. Electric Locomotives. Car Lighting. Trolley Car Operation. Miscellaneous Applications. Motion Pictures. Gas Engine Ignition. Automobile Self-Starters and Lighting Systems, Electric Vehicles, Etc.

10. Contains 513 pages, 599 illustrations. Elevators. Cranes. Pumps. Air Compressors. Electric Heating. Electric Welding. Soldering and Brazing. Industrial Electrolysis. Electro-Plating. Electro-Therapeutics, X-Rays, Etc. Also a complete 126-page ready reference index of the complete library. This index has been planned to render easily accessible all the vast information contained in the 10 electrical guides. There are over 13,500 cross references. You find what you want to know instantly.

A NEW Up-to-Date GUIDE For MARINE ENGINEERS

Giving Just the Needed Information WITH Questions and Answers on the following subjects

How to Figure (with examples).

Safety Valve Rules.

Horse Power Rules.

Theory and Elements of Engineering.

Steam Tables.

Marine Boilers.

Oil Burners.

Marine Engines.

Turbines.

Pumps and Condensers.

Injectors and Heaters.

Steering Engines.

Pipes and Piping.

Auxiliary Machines.

General Care and Management, with Suggestions.

Breakdowns and Repairs at Sea.

Overhauling and Laying Up.

Gasoline Engines.

Gas Producers.

Heavy Oil Engines.

Diesel Engines.

Dynamos and Motors.

Electric Ship Propulsion.

Refrigerating.

Machinery.

Government Rules and Regulations Relating to Engineers’ Certificates and Many Useful Questions and Answers Covering Practical, Modern and Approved Marine Practice.

850 Pages 600 Illustrations Flexible Covers Pocket Size Large Type PRICE $3 POST PAID THIS BOOK WILL HELP YOU

SHIPFITTERS’ GUIDE—$2.

EASY TO READ Audels Shipfitters’ Guide STEEL SHIPBUILDING AND REPAIRING FITS THE POCKET $2

The author has had twenty-five years’ experience as a shipfitter, and makes everything as plain as a pike-staff.

A mine of absolutely indispensable information for the man on the job.

Explains all about the Parts of a Steel Ship. A full list of terms used in shipbuilding and on board ship. Problems encountered in shipfitting. Work of the mold loft. Laying off plans to full size. The making of the template from the planning sheets to the placing of the finished plate on the ship—transferring—punching rivet holes—shearing—bending—Plan reading. How to lay the chalk line—repairing a template—method of lapping boards in template construction.

Loft work. Use of liners. Duplicating Bars or Angles. Lifting a bracket plate from the hull—lifting a bosom bar on the ship—beveling—lifting curved shell from the hull—method of obtaining template sets for curved plates—lifting boss plate from the hull—lifting a margin bar. Building a bulk freighter—launching a bulk freighter. Including practical helps, hints and suggestions for the practical shipworker.

A handsome book 6⁵⁄₈ by 4⁷⁄₈ inches. Two hundred pages; illustrated. Convenient for the pocket and made to last as long as any book can.

Audel’s Easy Lessons WIRELESS 50c.

A practical Course of Instruction Explaining the Principles, Construction and the Workings of Wireless Apparatus—for students, experimenters and operators; fully illustrated and explained in the following Important Chapters and Lessons 1.—Forms of Electricity. 2.—Magnetism and Electro-magnetic Induction. 3.—Disruptive Discharge. 4.—Electric Oscillations. 5.—Electric Waves. 6.—The Aerial Wire System. 7.—The Grounded Terminal. 8.—The Transmitting Apparatus. 9.—The Receiving Apparatus. 10.—The Aerial Switch and Other Apparatus. 11.—Installing the Apparatus. 12.—Some other considerations. With a thorough grasp of the elementary principles and a fair skill with the telegraph key, the other and more complex things a wireless operator must know, will come quickly and easily and with them—success. 242 pages, 259 illustrations—well printed and made to fit the vest pocket. PRICE50c.

Hawkins’ Electrical Dictionary.

$2^.00

A reliable guide for Engineers, Contractors, Superintendents, Draftsmen, Telegraph and Telephone Engineers, Wire and Linemen.

Contains many books in one, and is an entirely new and original work. Clearly and plainly defining the full use and meaning of the thousands upon thousands of words, terms and phrases used in the various branches and departments of Electrical Science.

No Dictionary has to the knowledge of the publishers been printed to date that has kept pace with the rapid development of Electrical Engineering.

It measures 6¹⁄₂ × 8¹⁄₂ inches, is over one and one-half inches thick; the book weighs about two and one-half pounds, giving a finish to the book which is charming.

Hawkins’ Mechanical Dictionary.

$2^.00

If the reader often encounters words and allusions whose meaning is not clear, or is a busy man, without time to wade through a whole volume on any subject about which information is desired, or is a student or a professional man, feeling the frequent need of a first class reference work, he will readily appreciate the qualities that are to be found in this most useful book.

It is a cyclopædia of words, terms and phrases in use in the Mechanic Arts, Trades and Sciences—“many books in one.” It is the one book of reference no student or expert can dispense with. 704 pages, 6¹⁄₂ × 8¹⁄₂ inches, handsomely bound.

AUDELS STARTING AND LIGHTING OF AUTOMOBILES

50c.

This New Helpful Book tells all about the various forms of starting and lighting systems in use. Written and illustrated in plain language.

Owners, Chauffeurs, and Repairmen will find the necessary information for keeping in commission this part of their car, which if not understood may cause trouble.

The Latest Improvements are shown, also directions for installing and operating are given, making the book a ready reference for the up-to-date motorist.

Homans’ Automobiles.

$2

“Homans’ Self Propelled Vehicles” gives full details on successful care, handling, and how to locate trouble.

Beginning at the first principles necessary to be known, and then forward to the principles used in every part of a Motor Car.

It is a thorough course in the Science of Automobiles, highly approved by manufacturers, owners, operators and repairmen. Contains over 400 illustrations and diagrams, making every detail clear, written in plain language. Handsomely bound.

Audels Automobile Guide.

$1^.50

Written so you can understand all about the construction, care and management of motor cars. The work answers every question that may come up in automobile work. The book is well illustrated and convenient in size for the pocket.

Audels Gas Engine Manual.

$2

This volume gives the latest and most helpful information respecting the construction, care, management and uses of Gas, Gasoline and Oil Engines, Marine Motors and Automobile Engines, including chapters on Producer Gas Plants and the Alcohol Motor.

The book is a practical educator from cover to cover and is worth many times its price to any one using these motive powers.

Audels Answers on Refrigeration

$2

Gives in detail all necessary information on the practical handling of machines and appliances used in Ice Making and Refrigeration. Contains 704 pages, 250 illustrations, and written in question and answer form; gives the last word on refrigerating machinery. Well bound and printed in one volume; complete.

Rogers’ Erecting and Operating.

$2

Provides full information on methods successfully proved in modern practice to be the best for use in erecting and installing heavy machinery of all kinds. It includes a systematic course of study and instruction in Mill Engineering and Millwrighting, together with time saving tables, diagrams and a quick reference index.

Rogers’ Drawing and Design.

$2

This volume is arranged as a comprehensive, self-instruction course for both shop and draughting room.

Contains 506 pages, illustrated by over 600 cuts and diagrams, very many of them full page drawings; the book is printed on a very fine grade of paper; it measures 8¹⁄₂ × 10¹⁄₂ inches and weighs over 3 pounds; it is in every way completely up-to-date.

Rogers’ Machinists Guide.

$2

Is a manual for Engineers and Machinists on modern machine shop practice, management, grinding, punching, cutting, shearing, bench, lathe and vise work, gearing, turning, and all the subjects necessary to advance in shop practice, and the working and handling of machine tools. The most complete book on these subjects. Fully illustrated.

Audel’s Answers on Practical Engineering.

$1

Gives you the everyday practice and simple laws relating to the care and management of a steam plant. Its 250 pages make you familiar with steam boilers, steam, fuel, heat, steam gauge, installation and management of boilers, pumps, elevators, heating, refrigeration, engineers’ and firemen’s law, turbines, injectors, valves, steam traps, belts, gears, pulleys, electricity, etc., etc.

Hawkins’ Electricity for Engineers.

$2

The introduction of electrical machinery in almost every power plant has created a great demand for competent engineers and others having a knowledge of electricity and capable of operating or supervising the running of electrical machinery. To such persons this pocket-book will be found a great benefactor, since it contains just the information required, clearly explained in a practical manner.

It contains 550 pages with 300 illustrations of electrical appliances, and is bound in heavy red leather, size 4¹⁄₂ × 6¹⁄₂ for the pocket.

Hawkins’ Engineers’ Examinations.

$2

This work is an important aid to engineers of all grades, and is undoubtedly the most helpful ever issued relating to a safe and sure preparation for examination. It presents in a question and answer form the most approved practice in the care and management of Steam Boilers, Engines, Pumps, Electrical and Refrigerating Machines, together with much operative information useful to the student.

Hawkins’ Steam Engine Catechism.

$2

This work is gotten up to fill a long-felt need for a practical book. It gives directions and detailed descriptions for running the various types of steam engines in use.

The book also treats generously upon Marine, Locomotive and Gas Engines, and will be found valuable to all users of these motive powers.

Hawkins’ Steam Boiler Practice.

$2

This instructive book on Boiler Room Practice is indispensable to Firemen, Engineers and all others wishing to perfect themselves in this important branch of Steam Engineering.

Besides a full descriptive treatise on Stationary, Marine and Locomotive boilers, it contains sixty management cautions, all necessary rules and specifications for boilers, including riveting, bracing, finding pressure, strain on bolts, etc., thus being a complete hand-book on the subject.

Hawkins’ Mechanical Drawing.

$2

This work is arranged according to the correct principles of the art of drawing; each theme being clearly illustrated to aid the student to ready and rapid comprehension.

It contains 320 pages with over 300 illustrations, including useful diagrams and suggestions in drawings for practice. Handsomely bound in dark green cloth. Size 7 × 10 inches.

Hawkins’ Calculations for Engineers.

$2

The Hand Book of Calculations is a work of instruction and reference relating to the steam engine, steam boiler, etc., and has been said to contain every calculation, rule and table necessary for the Engineer, Fireman and Steam User.

It is a complete course in Mathematics. All calculations are in plain arithmetical figures, so that they can be understood at a glance.

Hawkins’ Steam Engine Indicator.

$1

This work is designed for the use of erecting and operating engineers, superintendents and students of steam engineering, relating, as it does, to the economical use of steam.

The work is profusely illustrated with working cards taken from every day use, and gives many plain and valuable lessons derived from the diagrams.

Guarantee.

These books we guarantee to be in every way as represented, and if not found satisfactory can be returned promptly and the amount paid will be willingly refunded. All books shipped post paid.

Remittances are best sent by Check, Post Office or Express Money Orders.