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