116 



THE WORLD'S ADVANCE for JULY 



Direct from = s ^ ' $34 ' 9 



16 H-P, 308.80 

 22 H-P, 389.65 



Portable Engine* 

 Proportionally Law. 



WITTE Engines 



Kerosene, Gasoline and Gas 



Stationary, (skidded or on iron base) .and Mounted 

 Styles. Long-wearing, separable, semi-steel cylin- 

 ders and 4-ring pistons; automobile ignition: spark 

 shift; vertical valves; variable speed; and other 

 merits without which no engine is now high-grade. 



Liberal 5- Year Guaranty 



Cash or Easy Terms. Why pay double price for 

 any good engine, or take a poor one, 

 for any price, when the WITTE costs 

 BO little and saves you all the risk? 



Hew Book Free. Tdis^ou^the;^. 



ing as well as manufacturing. Get the 

 facts whether you buy from me or not. 

 Ed . H . Witte, Witte I ron Work* Co. 

 2225 Oakland A ve., Kansas City, Mo. 



50 Light Dynamo, $55 

 100 " " $75 



In Payments of $5 Only 

 Per Month 



HOBART BROS. CO. 



TROY, OHIO 



IS ENGINE 



MUST 



-SELL ITSELF 

 -SATISFY YOU 

 -PROVE ITS 

 SUPERIORITY BY ACTUAL SERVICE 



You know what you are getting and you know 

 what you are going to get for years to come 

 when you buy a Bull's Eye Gas Engine. 

 There's no guesswork no risk. You try it 60 

 days before spending a cent test it thoroughly 

 see it in operation. Then, when you buy, 

 your purchase is protected by a guarantee which 

 insures the same kind of service in the future 

 Satisfactory service under all conditions. You 

 deal In dependable values, with a dependable 

 house whose reputation for honest merchan- 

 dising is world-wide. Write for New Free 

 ~ook No. PE2 on Gas 

 ^Engines a volume ol 

 iluable information 

 for Engine buyers. 



MONTGOMERY 

 WARD & 0. 



New York 

 Chicago 



VACUUM SUPPLY CO. 



VACUUM PUMPS 



k ~ Tools, Hose and Parts 



for cleaners. Electric or gas- 

 oline. For stationary house 

 or wagon machines. Our 

 pumps rugged, standany wear. 

 Assemble your own machine. 

 Saves half. Dept. A. 

 ;; Ann Arbor, Mich. 



Get Into Business ForYoufself 



Have you worked all your life for the other 

 fellow ? Who's got the profit ? He has ? Well, 

 there's more opportunity today in the well- 

 drilling business than ever before. Get a 



STAR DRILLING MACHINE 

 Portable-Steam or Gasoline 



Go into business hold your own profits 

 You've got the brains and ability. All 

 you need is the outfit. It is part of 

 our business to help you. If you will 

 write us we'll give you suggestions 

 gained from over thirty years' experience. 



STAR DRILLING MACHINE CO. 



601 Washington St., Akron, Ohio 



KfcDJbJMOTORS 



The 



simplest, most dependable and only logical 

 small gas or gasoline motor 



ey overate wireless generators, house lighting gener- 

 ators, lathes, etc. A great favorite among experimenters 



For domestic use they run wash machines, 

 pumps, churns, railway speeders, etc. The most 

 powerful little engine in use in all parts of the 

 world. Runs on gasoline, kerosene, alcohol, city 

 gas, natural gas, acetylene, or blaugas. 

 Send for booklet W now. '/ 4 , '/z and I H. P. 



ELGIN WHEEL AND ENGINE COMPANY, ELGIN, ILLINOIS 



A HANDY MAN 



around the house 

 is of great value 



not only from a financial standpoint but a great many 

 conveniences not otherwise obtainable will be enjoyed 



ADVANCE 



Handy Electrical Dictionary 



"Jusf Fits The Vest Pocket" 



Designed to meet the needs of the begin- 

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 pact, reliable reference for the electrical 

 worker and expert. 



224 pages "Plain English" defini- 

 tions of over 4,800 electrical terms 

 and phrases 7 pages of diagrams 

 Everyone Interested in Electricity 



Needs it 



Price, Cloth, 25c 

 Full leather, full gilt, 50c 



MODERN PUBLISHING CO., Book Dept 



239 Fourth Ave., NEW YORK, N. Y. 



BRASS GEARS 



Cat by an entirely new process. The moil 

 accurate made and at pricei that cannot be 

 equalled by others. Every gaar has a hub, 

 center painted ebony back, edges turned 

 true, highest trade red brasb, and much 

 heavier than others. We carry the largest 

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 is always shipped on date of order. 



SEND FOR CATALOGUE 

 CHICAGO STOCK GEAR WORKS 

 18 So. Fifth Ave. :: Chicago 



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