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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Eight sharp cut­ tmg edges. Net price $5, cas witlt orrle-l'. Senel )'onr water pres;;nre and silt supply pipe..50, cnsh with or­ d(·r. Sag naw; ich A. Let explain. YOU WILL MAKE MISTAKE YOU NOT WRITE FOR INFORMATIQN. State your requirement\> and get our adVIse. CIENTTFTC A:\I ERTCAN Sf' PP1. Order yonI' motor hom dealer from us. Don't scoff. 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. WE LL DRILLING MACHINES Over sizes and 8tyles, for rilling either deep or shallow wells any kind soi rock., and all newsdeal ers. \-Vorl{s day NigJlt-makes prints any lenvth. four cylinder. Ball­ bearing, safety starting handles for all makes cars. LA FAYETTE, IND. vehicle manufacturer using the battery reports that charged ex· hausted battery A·4 cellR the rate of 100 amperes for short tin1('. Y. swin�., Cincinnati, Ohio Fon G NSMITHS.. 695 Water Street, Seneca Falls, Y. Don't take the side shows and miss the main show i the big tent. water during long periods the life t>f the cell. , concern. ''''ashing . In charging, the rate can varied 3 One not too heavy-will positively not gum clog, collect dust dirt, harden dry out. MO�M.. Both free., 308 Park St.. Send fOl Catalog I>o.blisbed 18IiO-ALOl<: Civil Engineering and Surveying Instruments DRA WING MATERIALS SIJPPLIES B . St. A. engine made has wide range use. ]6.01' for Mechanics find Tradesmen. makes Blue Prints, Black Prints and Brown Prints.• 46 "St " Foot aml ar Power Screw Cutting Au��t LathesFOR FINE, ACCURATE WORK Send for Catalogue B. /).r MUNN COMPANY, Inc.cyc1e motorS., 2109 North Ninth St. pipe, Ibs. THE SEBASTIAN IS-INCH ENGINE LATHE HIGH GRADE LOW PRICE Automobile Builders.. 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. i\'1ounted on wheels o�· tonl ls. illustrated article published in Scientific meric.L, Write for Free Sample Manufactured by T Y C CO. Lowest fuel cost for runs Gasoline, Kerosene- Distillate, Gas Alcohol and has perfect ubrication. I TilE J". 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. Manufactured the The Ke)Jstone Safety Starling Handle Co. Send for catalo. Ours the Oldest agency for securing patents ; it was established over sixty-five years ago. Order from your newsdealer from . THE POWER CONTRACTOR'S FAVORITE ENGINE. Arrane-ed for Steam or Foot Power, Velocipede or Stand-up rrreadle. pipe. each ' brought in- Istantly into u,e bal joint . , 4" Walnut Street, Philadelphia, Pa. HOLTZER-CABOT GAS ENGINE JUMP SPARK and M. Sent FREE" A. Sold all garages, auto supply dealers, hardware and general stores-10c. Lowest cost because it delivers greatest available power per horse. EMEXT 23."��;::;;·1J-Neatest, simplest and be,t on Ithe market. l3-in. For user:" Blue Print Paper pply Lanting Machines for making blue print paper linen. with provision for circulation elec. Catalog free. A Free Opinion the probable patenta­ bility iTlventi�n will readily gi. 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. 1). CO. S ENTI AME RICAN A ttache(J sny water faucet will deyelop lip to according: s i ze pipe and W:ltB!' pre!;,�llre. BORBEIN AUTO CO., LEIB ST. 1492-4 in., Manufacturers, 417 West 15th SI. All communications are strictly confidential. CO., Port Washington, Wis. WilliAMS BROS Ithaca. BABBITT METALS. A E-For Sixty Ye:m' the Standard the WOJ'ld for Quality.00. l\Ionev b:lcl;; for allY reason.ven any inventor furnishing with model sketch and a brief description the device question. Write once for generous sample bottle and Magneto Bulletin. Garages, Repair and General Jobbing Shops find this the ideal lathe for their work. DETROIT. Price cents.,an Supplement 685. Price cents mail. SENECA FALLS MFG. The Express System Saves Money., L'". BAR . 'Publishers '1. J\dive Ag'ents wanted. "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."w York and London. CRAY MOTOR CO., 507 Olive Street, St.l:ulC>. 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. From 9-in. Louis, Mo. 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. One boy does the work four men. 3 One not too light properly lubricate and keep lubricated any bearing (ballbearing ordinary bearing). 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. ALOE CO. 25c. sYz single cylinder. Please mention the Scientific American when writing- advertisers through wide range, and may far hig]her than would safe with the lead battery. GILSON MFG. connection. -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. THE EDISON CONCRETE HOUSE q How constructed. Ruby St. trolyte because the latter constant, chemically, electrically and physically. oxclusively the manufacture 2. Any mechanic can opprat e them easi Send for eatalol!. how much it will cost, practical from archi· tecturaI and engineering standpoint ? These and other important questions relating the structure are discussed good, thorough.iliu(', 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. ('at nlog free. It will not run out and leave contact points dry. Patents and 11 Paten secured. A., Philadelphia, Pa. Esb. The Bible ofthe aero enthusiast, experi­ menter, builder, aviator and advertiser. pressure, in. 361 Broadway, New York WHAI ONE MAGNETO OIL ? January 4. Try One. 918 Chestnut St.l1lal'.. Only pel'feet small motor made. 1 for complete catalog today••teU8 all about how these high grade lilotors are built tbe largost plant the world devoted. in. Strong, sirupie and durable. (I'or sale everywhere.-SIX IMPORTA� T formulas. Send for Lathe Catalog. and states that pays better put over . ]8-B.00 SI'JIId tor 232 page catalog No.water pres­ sure; lbs. The element made very com,;;act. Easily lucked or released turning handle. L O. two cylinder. 1\[0(. Scale drawings of mac hine, construction details, subscribers' forum. MIC . regard to securing valid patent protpction for their in­ v Trade-:llarks and CopyrightM registered. Write/orcatalogue once, mentioning thispaper. W.. For sale uno Co• Inc. Send for our Special Offer ! ------ ------ --- fiutomobile Running Gears WITH PRESSED STEEL ANGLE IRON FRAMES Also all styles bodies. The nature the support rna· terials and the method applying the active material the plates enable the cell stand dead short circuits without injury. 625 Wash ., 50c.. THE TEMPLE PUMP CO. Established 1872. With engines llorse powerR., Dept. Louis, Mo. Our IIand-Book Patents will sent free on request. TOOL MAKERS, EXPER I· M ENTAL PAIR WO ETC. 3 One contains carbon residue, foreign matter, acid, impurities like all cylinder (mineral) oils. DE P'T , /"'K'# TAPES AND RULES ARE THE BEST. slow speed, high duty engine. PRICE 11<1. . D WAT MOTOR . "FREE" Write for Catalogue., Chicago, This our 58th year., Athol. a ONE OIL COMPANY, BROADWAY, New York City.!!!_ and B K TYPES FOR MARINE AUTOMOBILE and STA· TIONARY ENGINES SEND FOR LAT EST BULLETIN 557 THE flOLTZER-CABOT ELECTRIC CO. 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. Yearly subscription, $3. any battery any time for half the CO'lt bearing of new battery. M Broadway, New York B ranch Office. 361 roadway, New ork, or 625 Street, Washington, C. WILLIAMS, BROWN EARLE, Ine. Accepted the authority. STAI-:'RETT CO. bottles. 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. - Every User Blue Prints Should Investigate the New EXPRESS System Blue Printing Automatic, saves half the cost. Improved bucket wheel construction., ROCKFORD, h., 1 Legal Notices IN VENTORS are Invited communicate with Munn o. The Sebastian Lathe Co•• 120 Culvert SI. ���