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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oxclusively the manufacture 2. 695 Water Street, Seneca Falls, Y. in.. MO�M. Let explain.. 3 One contains carbon residue, foreign matter, acid, impurities like all cylinder (mineral) oils. Louis, Mo. 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. 'Publishers '1.ven any inventor furnishing with model sketch and a brief description the device question.. TOOL MAKERS, EXPER I· M ENTAL PAIR WO ETC. Please mention the Scientific American when writing- advertisers through wide range, and may far hig]her than would safe with the lead battery. 361 Broadway, New York WHAI ONE MAGNETO OIL ? January 4.00 SI'JIId tor 232 page catalog No. Y. Write once for generous sample bottle and Magneto Bulletin., LEIB ST.l1lal'., Chicago, This our 58th year. 361 roadway, New ork, or 625 Street, Washington, C. Write/orcatalogue once, mentioning thispaper. Accepted the authority. DE P'T , /"'K'# TAPES AND RULES ARE THE BEST."w York and London. ]8-B. makes Blue Prints, Black Prints and Brown Prints. Send for Lathe Catalog.. how much it will cost, practical from archi· tecturaI and engineering standpoint ? These and other important questions relating the structure are discussed good, thorough. , 4" Walnut Street, Philadelphia, Pa. THE SEBASTIAN IS-INCH ENGINE LATHE HIGH GRADE LOW PRICE Automobile Builders. "FREE" Write for Catalogue. \-Vorl{s day NigJlt-makes prints any lenvth. BAR . 1492-4 in. CRAY MOTOR CO. Order yonI' motor hom dealer from us. regard to securing valid patent protpction for their in­ v Trade-:llarks and CopyrightM registered. W. STAI-:'RETT CO. Price cents mail.. ('at nlog free. S ENTI AME RICAN A ttache(J sny water faucet will deyelop lip to according: s i ze pipe and W:ltB!' pre!;,�llre. 918 Chestnut St. pressure, in. l\Ionev b:lcl;; for allY reason., and all newsdeal ers. Equip Your Car With the "Webster" Safely Starting Handle, positive its action, absolutely prevents injury from back-kicks, adopted part 0/regular equipmentfor lco cars. Louis, Mo. Order from your newsdealer from . For sale uno Co• Inc. 1). Lowest cost because it delivers greatest available power per horse. EMEXT 23., Athol. Eight sharp cut­ tmg edges. Patents and 11 Paten secured. bottles. ���., L'". MIC . a ONE OIL COMPANY, BROADWAY, New York City. Only pel'feet small motor made. Easily lucked or released turning handle., Manufacturers, 417 West 15th SI. Arrane-ed for Steam or Foot Power, Velocipede or Stand-up rrreadle. 1\[0(. I TilE J". THE EDISON CONCRETE HOUSE q How constructed. SENECA FALLS MFG. A E-For Sixty Ye:m' the Standard the WOJ'ld for Quality. 1 for complete catalog today••teU8 all about how these high grade lilotors are built tbe largost plant the world devoted.. 625 Wash .• 46 "St " Foot aml ar Power Screw Cutting Au��t LathesFOR FINE, ACCURATE WORK Send for Catalogue B. (I'or sale everywhere. Senel )'onr water pres;;nre and silt supply pipe. LA FAYETTE, IND. two cylinder. any battery any time for half the CO'lt bearing of new battery., Dept. The Bible ofthe aero enthusiast, experi­ menter, builder, aviator and advertiser. Improved bucket wheel construction. BORBEIN AUTO CO. St. YOU WILL MAKE MISTAKE YOU NOT WRITE FOR INFORMATIQN. The Express System Saves Money. -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. 3 One not too light properly lubricate and keep lubricated any bearing (ballbearing ordinary bearing).01' for Mechanics find Tradesmen. For user:" Blue Print Paper pply Lanting Machines for making blue print paper linen. 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. 25c. J\dive Ag'ents wanted. On account the low voltage the cell, a vehicle battery given voltage must contain larger number cells than a lead battery, twenty-fonr lead cells being equivalent forty the nickel-iron cells of same ampere-hour capacity but the low voltage and comparatively high in· ternal resistance are disadvantageo1ls from the purely electrical rather than the vehicle point view. pipe, Ibs.water pres­ sure; lbs. water during long periods the life t>f the cell., Cincinnati, Ohio Fon G NSMITHS.00. Sold all garages, auto supply dealers, hardware and general stores-10c.!!!_ and B K TYPES FOR MARINE AUTOMOBILE and STA· TIONARY ENGINES SEND FOR LAT EST BULLETIN 557 THE flOLTZER-CABOT ELECTRIC CO. slow speed, high duty engine. CIENTTFTC A:\I ERTCAN Sf' PP1. Ruby St. State your requirement\> and get our adVIse. and states that pays better put over . Esb. One boy does the work four men. Send fOl Catalog I>o. ]6.-SIX IMPORTA� T formulas. pipe. 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. DETROIT. Don't scoff. l3-in. connection. WE LL DRILLING MACHINES Over sizes and 8tyles, for rilling either deep or shallow wells any kind soi rock. The element made very com,;;act.r MUNN COMPANY, Inc.L, Write for Free Sample Manufactured by T Y C CO. each ' brought in- Istantly into u,e bal joint . Manufactured the The Ke)Jstone Safety Starling Handle Co. Send for our Special Offer ! ------ ------ --- fiutomobile Running Gears WITH PRESSED STEEL ANGLE IRON FRAMES Also all styles bodies. . Garages, Repair and General Jobbing Shops find this the ideal lathe for their work. The nature the support rna· terials and the method applying the active material the plates enable the cell stand dead short circuits without injury., 50c. 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. THE POWER CONTRACTOR'S FAVORITE ENGINE. GILSON MFG. ''''ashing . ALOE CO., 2109 North Ninth St. In charging, the rate can varied 3 One not too heavy-will positively not gum clog, collect dust dirt, harden dry out. Yearly subscription, $3., Philadelphia, Pa. M Broadway, New York B ranch Office. - Every User Blue Prints Should Investigate the New EXPRESS System Blue Printing Automatic, saves half the cost. BABBITT METALS. Don't take the side shows and miss the main show i the big tent. From 9-in. L O. Price cents. A., 507 Olive Street, St., Port Washington, Wis.l:ulC>. WilliAMS BROS Ithaca. swin�.cyc1e motorS. 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. /). 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. Send for catalo.. vehicle manufacturer using the battery reports that charged ex· hausted battery A·4 cellR the rate of 100 amperes for short tin1('.iliu(', in. PRICE 11<1. Any mechanic can opprat e them easi Send for eatalol!. Sag naw; ich A. Try One. Established 1872., ROCKFORD, h. The Sebastian Lathe Co•• 120 Culvert SI. It will not run out and leave contact points dry. with provision for circulation elec. WILLIAMS, BROWN EARLE, Ine. HOLTZER-CABOT GAS ENGINE JUMP SPARK and M. A. In this "can electricity" the solution s a mere liquid carrier ions-it has, O t speak, moods and tenses its own to catered the battery user. i\'1ounted on wheels o�· tonl ls. illustrated article published in Scientific meric.,an Supplement 685.50, cnsh with or­ d(·r. sYz single cylinder. trolyte because the latter constant, chemically, electrically and physically. All communications are strictly confidential. Catalog free. CO. Ours the Oldest agency for securing patents ; it was established over sixty-five years ago. , concern."��;::;;·1J-Neatest, simplest and be,t on Ithe market. engine made has wide range use., 308 Park St. Scale drawings of mac hine, construction details, subscribers' forum. 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. Net price $5, cas witlt orrle-l'. With engines llorse powerR. Our IIand-Book Patents will sent free on request. Both free. Lowest fuel cost for runs Gasoline, Kerosene- Distillate, Gas Alcohol and has perfect ubrication. THE TEMPLE PUMP CO. Sent FREE" A. "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. D WAT MOTOR . Strong, sirupie and durable. A Free Opinion the probable patenta­ bility iTlventi�n will readily gi..blisbed 18IiO-ALOl<: Civil Engineering and Surveying Instruments DRA WING MATERIALS SIJPPLIES B . Ball­ bearing, safety starting handles for all makes cars. four cylinder. CO., 1 Legal Notices IN VENTORS are Invited communicate with Munn o