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