Scientific American 1941

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Thomas A. Edison's Latest Invention A Storage Battery Designed and Constructed from the Automobile User's Point of View ...

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M Broadway, New York B ranch Office. Arrane-ed for Steam or Foot Power, Velocipede or Stand-up rrreadle. For sale uno Co• Inc.. engine made has wide range use. i\'1ounted on wheels o�· tonl ls.. Both free. 'Publishers '1. slow speed, high duty engine. Accepted the authority. Sold all garages, auto supply dealers, hardware and general stores-10c. PRICE 11<1. "Boosting charges"-given a vehicle battery when partially dis· charged, carry through a longer _period than its prescribed day's work-may given for hour's run at a rate two three times the normal charging rate and regular charge may be completed hurry starting at a high rate and gradually dpcreasing the rate. how much it will cost, practical from archi· tecturaI and engineering standpoint ? These and other important questions relating the structure are discussed good, thorough., Athol. The Bible ofthe aero enthusiast, experi­ menter, builder, aviator and advertiser. With engines llorse powerR. 3 One contains carbon residue, foreign matter, acid, impurities like all cylinder (mineral) oils. Y., Dept. Patents and 11 Paten secured. BAR . vehicle manufacturer using the battery reports that charged ex· hausted battery A·4 cellR the rate of 100 amperes for short tin1('. Garages, Repair and General Jobbing Shops find this the ideal lathe for their work. l\Ionev b:lcl;; for allY reason. Any mechanic can opprat e them easi Send for eatalol!. ''''ashing . DE P'T , /"'K'# TAPES AND RULES ARE THE BEST.blisbed 18IiO-ALOl<: Civil Engineering and Surveying Instruments DRA WING MATERIALS SIJPPLIES B . Catalog free. THE SEBASTIAN IS-INCH ENGINE LATHE HIGH GRADE LOW PRICE Automobile Builders. Starts easier and quicker than any other eng:ine, occupies less space, is ess cum bersome, with less vibration, therefore adapting for either stationary, portable traction use. 695 Water Street, Seneca Falls, Y. SENECA FALLS MFG. in.00 SI'JIId tor 232 page catalog No. W. ���.L, Write for Free Sample Manufactured by T Y C CO. S ENTI AME RICAN A ttache(J sny water faucet will deyelop lip to according: s i ze pipe and W:ltB!' pre!;,�llre. Louis, Mo. THE TEMPLE PUMP CO. BIotor for grmding, polishing, fans, sewing mtwhines for Doctors, Dl'ntists, Urn;!' �:)��:Il��l�d;�lfe!�$e;:'����f9���ei�� i �:�· tor and pulle:v 'olll)� $2. CRAY MOTOR CO. Bill' THELOWESTCOSTENGINE ��{!i�\�;:�leasIest e machine operates, delivering steadier power than any other gasolIne engine, adapting especially for operating farm machinery, with better results and least waste grain. In charging, the rate can varied 3 One not too heavy-will positively not gum clog, collect dust dirt, harden dry out., 2109 North Ninth St.. WILLIAMS, BROWN EARLE, Ine.ven any inventor furnishing with model sketch and a brief description the device question. Esb. St. Try One. THE EDISON CONCRETE HOUSE q How constructed.. Connections between the cells a battery and with the external cfrcuit are made means heavy niCKel-plated copper·wire connectors, with steel lugs swaged the ends and fitting the taper terminal posts. CIENTTFTC A:\I ERTCAN Sf' PP1. 1 for complete catalog today••teU8 all about how these high grade lilotors are built tbe largost plant the world devoted. Don't take the side shows and miss the main show i the big tent. Sag naw; ich A."w York and London., 507 Olive Street, St. Ball­ bearing, safety starting handles for all makes cars. Please mention the Scientific American when writing- advertisers through wide range, and may far hig]her than would safe with the lead battery. - Every User Blue Prints Should Investigate the New EXPRESS System Blue Printing Automatic, saves half the cost.50, cnsh with or­ d(·r. 1\[0(. A Free Opinion the probable patenta­ bility iTlventi�n will readily gi. WilliAMS BROS Ithaca. A. GILSON MFG. MIC . Order yonI' motor hom dealer from us.!!!_ and B K TYPES FOR MARINE AUTOMOBILE and STA· TIONARY ENGINES SEND FOR LAT EST BULLETIN 557 THE flOLTZER-CABOT ELECTRIC CO. sYz single cylinder. Lowest cost because it delivers greatest available power per horse., Port Washington, Wis. One boy does the work four men. Don't scoff. L O. l3-in. "FREE" Write for Catalogue. Eight sharp cut­ tmg edges. Write once for generous sample bottle and Magneto Bulletin. It will not run out and leave contact points dry. Improved bucket wheel construction., Manufacturers, 417 West 15th SI. The cost of charging current, and hence also the ef· ficiency its recovery the discharge circuit, minor part the total ex· pense operating the vehicle and the low electrical efficiency the battery s offset its extremely light weight­ which 'not only lightens the construction of the vehicle, but increases the propor· tion "paying load" carried the same -and its ruggedness service. From 9-in. 3 One not too light properly lubricate and keep lubricated any bearing (ballbearing ordinary bearing).-SIX IMPORTA� T formulas.cyc1e motorS.iliu(', in. illustrated article published in Scientific meric. CO. pressure, in.l:ulC>. 25c. bottles. stated that the cell im· proves use, instead deteriorating, and the company guarantees renew 3 One clear oil compound absolutely pure with just enough body oil perfectly the most delicate or sensitive action point. Send for our Special Offer ! ------ ------ --- fiutomobile Running Gears WITH PRESSED STEEL ANGLE IRON FRAMES Also all styles bodies. Yearly subscription, $3., 1 Legal Notices IN VENTORS are Invited communicate with Munn o. 361 Broadway, New York WHAI ONE MAGNETO OIL ? January 4. swin�.01' for Mechanics find Tradesmen., 308 Park St., Philadelphia, Pa. Senel )'onr water pres;;nre and silt supply pipe. Established 1872. Ruby St., ROCKFORD, h. any battery any time for half the CO'lt bearing of new battery. BABBITT METALS. THE POWER CONTRACTOR'S FAVORITE ENGINE. oxclusively the manufacture 2. , concern. 361 roadway, New ork, or 625 Street, Washington, C. Price cents mail. with provision for circulation elec."��;::;;·1J-Neatest, simplest and be,t on Ithe market. connection.. Manufactured the The Ke)Jstone Safety Starling Handle Co. 1)., 50c. A. water during long periods the life t>f the cell.r MUNN COMPANY, Inc. ('at nlog free. I TilE J". STAI-:'RETT CO. trolyte because the latter constant, chemically, electrically and physically. In estimating the true commercial efficiency of road-vehicle transportation, the ton· miles obtained must compared with the total cost operation the vehi- cle, with due allowance for all-around reo liability., Cincinnati, Ohio Fon G NSMITHS., Chicago, This our 58th year. , 4" Walnut Street, Philadelphia, Pa.00. Order from your newsdealer from .,an Supplement 685. For user:" Blue Print Paper pply Lanting Machines for making blue print paper linen. 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BORBEIN AUTO CO. two cylinder. J\dive Ag'ents wanted. a ONE OIL COMPANY, BROADWAY, New York City. Louis, Mo.water pres­ sure; lbs. Price cents. regard to securing valid patent protpction for their in­ v Trade-:llarks and CopyrightM registered. -Whereas the lead cell the constitu­ tion (proportions acid and water) con· ductivity and specific gravity all undergo definite changJe during the cycle of charge and discharge, the Edison cell these ql,lalities remain unaltered. (I'or sale everywhere. YOU WILL MAKE MISTAKE YOU NOT WRITE FOR INFORMATIQN. 1492-4 in. All communications are strictly confidential. HOLTZER-CABOT GAS ENGINE JUMP SPARK and M. each ' brought in- Istantly into u,e bal joint . TOOL MAKERS, EXPER I· M ENTAL PAIR WO ETC. 918 Chestnut St. LA FAYETTE, IND. The nature the support rna· terials and the method applying the active material the plates enable the cell stand dead short circuits without injury