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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Louis, Mo. -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. Y. MO�M. For sale uno Co• Inc. CO.. BABBITT METALS.• 46 "St " Foot aml ar Power Screw Cutting Au��t LathesFOR FINE, ACCURATE WORK Send for Catalogue B. (I'or sale everywhere. A Free Opinion the probable patenta­ bility iTlventi�n will readily gi. LA FAYETTE, IND. Send for Lathe Catalog. DETROIT. Net price $5, cas witlt orrle-l'.cyc1e motorS.water pres­ sure; lbs. St. vehicle manufacturer using the battery reports that charged ex· hausted battery A·4 cellR the rate of 100 amperes for short tin1('. how much it will cost, practical from archi· tecturaI and engineering standpoint ? These and other important questions relating the structure are discussed good, thorough. any battery any time for half the CO'lt bearing of new battery. Eight sharp cut­ tmg edges., Dept.iliu(', in. makes Blue Prints, Black Prints and Brown Prints.L, Write for Free Sample Manufactured by T Y C CO. State your requirement\> and get our adVIse. The element made very com,;;act. pipe, Ibs. 3 One not too light properly lubricate and keep lubricated any bearing (ballbearing ordinary bearing). 1\[0(. W. Esb. PRICE 11<1. 1). Arrane-ed for Steam or Foot Power, Velocipede or Stand-up rrreadle. CO. 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., Cincinnati, Ohio Fon G NSMITHS. Send for our Special Offer ! ------ ------ --- fiutomobile Running Gears WITH PRESSED STEEL ANGLE IRON FRAMES Also all styles bodies. /). THE SEBASTIAN IS-INCH ENGINE LATHE HIGH GRADE LOW PRICE Automobile Builders. TOOL MAKERS, EXPER I· M ENTAL PAIR WO ETC., Athol. 695 Water Street, Seneca Falls, Y. bottles.blisbed 18IiO-ALOl<: Civil Engineering and Surveying Instruments DRA WING MATERIALS SIJPPLIES B . oxclusively the manufacture 2. connection. Sold all garages, auto supply dealers, hardware and general stores-10c.. in.-SIX IMPORTA� T formulas. Order from your newsdealer from . engine made has wide range use. ''''ashing ., 1 Legal Notices IN VENTORS are Invited communicate with Munn o. Sag naw; ich A. ���. "FREE" Write for Catalogue. S ENTI AME RICAN A ttache(J sny water faucet will deyelop lip to according: s i ze pipe and W:ltB!' pre!;,�llre., Philadelphia, Pa. Garages, Repair and General Jobbing Shops find this the ideal lathe for their work., Manufacturers, 417 West 15th SI. trolyte because the latter constant, chemically, electrically and physically. WE LL DRILLING MACHINES Over sizes and 8tyles, for rilling either deep or shallow wells any kind soi rock. Price cents. Ruby St. Only pel'feet small motor made. \-Vorl{s day NigJlt-makes prints any lenvth. 3 One contains carbon residue, foreign matter, acid, impurities like all cylinder (mineral) oils. GILSON MFG. HOLTZER-CABOT GAS ENGINE JUMP SPARK and M.. CIENTTFTC A:\I ERTCAN Sf' PP1. pipe.50, cnsh with or­ d(·r. It will not run out and leave contact points dry. WILLIAMS, BROWN EARLE, Ine. SENECA FALLS MFG.01' for Mechanics find Tradesmen. Strong, sirupie and durable., 2109 North Ninth St. The nature the support rna· terials and the method applying the active material the plates enable the cell stand dead short circuits without injury. The Bible ofthe aero enthusiast, experi­ menter, builder, aviator and advertiser., ROCKFORD, h. L O. BORBEIN AUTO CO. Write/orcatalogue once, mentioning thispaper.l1lal'. illustrated article published in Scientific meric. Accepted the authority. Lowest fuel cost for runs Gasoline, Kerosene- Distillate, Gas Alcohol and has perfect ubrication. ('at nlog free.,an Supplement 685. J\dive Ag'ents wanted. WilliAMS BROS Ithaca."w York and London. Our IIand-Book Patents will sent free on request. A E-For Sixty Ye:m' the Standard the WOJ'ld for Quality. 25c. ]8-B. swin�. Price cents mail. In charging, the rate can varied 3 One not too heavy-will positively not gum clog, collect dust dirt, harden dry out. Catalog free. Scale drawings of mac hine, construction details, subscribers' forum."��;::;;·1J-Neatest, simplest and be,t on Ithe market. "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. Ball­ bearing, safety starting handles for all makes cars. YOU WILL MAKE MISTAKE YOU NOT WRITE FOR INFORMATIQN., Port Washington, Wis. 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. l\Ionev b:lcl;; for allY reason.. One boy does the work four men. regard to securing valid patent protpction for their in­ v Trade-:llarks and CopyrightM registered. Send fOl Catalog I>o. 1492-4 in. 1 for complete catalog today••teU8 all about how these high grade lilotors are built tbe largost plant the world devoted. l3-in. Louis, Mo. A. a ONE OIL COMPANY, BROADWAY, New York City.00. From 9-in. Don't scoff. , 4" Walnut Street, Philadelphia, Pa. slow speed, high duty engine. 361 roadway, New ork, or 625 Street, Washington, C. 918 Chestnut St. each ' brought in- Istantly into u,e bal joint .l:ulC>. 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. CRAY MOTOR CO.. DE P'T , /"'K'# TAPES AND RULES ARE THE BEST.r MUNN COMPANY, Inc. 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. THE TEMPLE PUMP CO. Any mechanic can opprat e them easi Send for eatalol!. 'Publishers '1. Don't take the side shows and miss the main show i the big tent. and states that pays better put over . STAI-:'RETT CO. M Broadway, New York B ranch Office.00 SI'JIId tor 232 page catalog No. D WAT MOTOR .. 361 Broadway, New York WHAI ONE MAGNETO OIL ? January 4., L'". With engines llorse powerR. 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. Try One. Let explain. Ours the Oldest agency for securing patents ; it was established over sixty-five years ago. Senel )'onr water pres;;nre and silt supply pipe. Manufactured the The Ke)Jstone Safety Starling Handle Co. ALOE 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., 507 Olive Street, St. Send for catalo. ., and all newsdeal ers. Easily lucked or released turning handle.. Write once for generous sample bottle and Magneto Bulletin. Lowest cost because it delivers greatest available power per horse. - Every User Blue Prints Should Investigate the New EXPRESS System Blue Printing Automatic, saves half the cost. For user:" Blue Print Paper pply Lanting Machines for making blue print paper linen. Order yonI' motor hom dealer from us.ven any inventor furnishing with model sketch and a brief description the device question. The Sebastian Lathe Co•• 120 Culvert SI. pressure, in. A. Patents and 11 Paten secured. 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.. THE POWER CONTRACTOR'S FAVORITE ENGINE. Sent FREE" A. Yearly subscription, $3. All communications are strictly confidential. THE EDISON CONCRETE HOUSE q How constructed., LEIB ST. ]6. Please mention the Scientific American when writing- advertisers through wide range, and may far hig]her than would safe with the lead battery. I TilE J". , concern. four cylinder. In estimating the true commercial efficiency of road-vehicle transportation, the ton· miles obtained must compared with the total cost operation the vehi- cle, with due allowance for all-around reo liability., 50c. BIotor for grmding, polishing, fans, sewing mtwhines for Doctors, Dl'ntists, Urn;!' �:)��:Il��l�d;�lfe!�$e;:'����f9���ei�� i �:�· tor and pulle:v 'olll)� $2. water during long periods the life t>f the cell. Improved bucket wheel construction., Chicago, This our 58th year. 625 Wash ., 308 Park St. BAR . 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. Both free. two cylinder. with provision for circulation elec.!!!_ and B K TYPES FOR MARINE AUTOMOBILE and STA· TIONARY ENGINES SEND FOR LAT EST BULLETIN 557 THE flOLTZER-CABOT ELECTRIC CO. i\'1ounted on wheels o�· tonl ls. MIC . EMEXT 23. Established 1872. The Express System Saves Money. sYz single cylinder