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