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