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