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