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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00. BORBEIN AUTO CO. 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. Accepted the authority.cyc1e motorS. The Sebastian Lathe Co•• 120 Culvert SI. l\Ionev b:lcl;; for allY reason. BAR . ]8-B. how much it will cost, practical from archi· tecturaI and engineering standpoint ? These and other important questions relating the structure are discussed good, thorough. ''''ashing .. S ENTI AME RICAN A ttache(J sny water faucet will deyelop lip to according: s i ze pipe and W:ltB!' pre!;,�llre. Sent FREE" A. Y. DE P'T , /"'K'# TAPES AND RULES ARE THE BEST.water pres­ sure; lbs., 1 Legal Notices IN VENTORS are Invited communicate with Munn o.r MUNN COMPANY, Inc. Improved bucket wheel construction.. Write/orcatalogue once, mentioning thispaper. (I'or sale everywhere. pressure, in. Lowest fuel cost for runs Gasoline, Kerosene- Distillate, Gas Alcohol and has perfect ubrication. water during long periods the life t>f the cell. Sold all garages, auto supply dealers, hardware and general stores-10c. Send fOl Catalog I>o. L O. Please mention the Scientific American when writing- advertisers through wide range, and may far hig]her than would safe with the lead battery. Don't scoff.!!!_ and B K TYPES FOR MARINE AUTOMOBILE and STA· TIONARY ENGINES SEND FOR LAT EST BULLETIN 557 THE flOLTZER-CABOT ELECTRIC CO., Dept.-SIX IMPORTA� T formulas. DETROIT. D WAT MOTOR . State your requirement\> and get our adVIse. , 4" Walnut Street, Philadelphia, Pa. pipe, Ibs. 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. Order from your newsdealer from . With engines llorse powerR. In charging, the rate can varied 3 One not too heavy-will positively not gum clog, collect dust dirt, harden dry out. sYz single cylinder. 1). Any mechanic can opprat e them easi Send for eatalol!. trolyte because the latter constant, chemically, electrically and physically. pipe. connection. THE POWER CONTRACTOR'S FAVORITE ENGINE.. 361 Broadway, New York WHAI ONE MAGNETO OIL ? January 4.l1lal'.L, Write for Free Sample Manufactured by T Y C CO., Philadelphia, Pa. CIENTTFTC A:\I ERTCAN Sf' PP1. W. a ONE OIL COMPANY, BROADWAY, New York City. A. any battery any time for half the CO'lt bearing of new battery. Manufactured the The Ke)Jstone Safety Starling Handle Co."w York and London. Net price $5, cas witlt orrle-l'. each ' brought in- Istantly into u,e bal joint . The nature the support rna· terials and the method applying the active material the plates enable the cell stand dead short circuits without injury. MO�M. EMEXT 23. slow speed, high duty engine. In this "can electricity" the solution s a mere liquid carrier ions-it has, O t speak, moods and tenses its own to catered the battery user. Connections between the cells a battery and with the external cfrcuit are made means heavy niCKel-plated copper·wire connectors, with steel lugs swaged the ends and fitting the taper terminal posts. /). Our IIand-Book Patents will sent free on request. From 9-in. ]6. Esb. Only pel'feet small motor made. BABBITT METALS. Garages, Repair and General Jobbing Shops find this the ideal lathe for their work. BIotor for grmding, polishing, fans, sewing mtwhines for Doctors, Dl'ntists, Urn;!' �:)��:Il��l�d;�lfe!�$e;:'����f9���ei�� i �:�· tor and pulle:v 'olll)� $2. Eight sharp cut­ tmg edges. A. LA FAYETTE, IND. -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. HOLTZER-CABOT GAS ENGINE JUMP SPARK and M. Catalog free. two cylinder. PRICE 11<1. TOOL MAKERS, EXPER I· M ENTAL PAIR WO ETC. Ball­ bearing, safety starting handles for all makes cars., ROCKFORD, h. WE LL DRILLING MACHINES Over sizes and 8tyles, for rilling either deep or shallow wells any kind soi rock. i\'1ounted on wheels o�· tonl ls. For sale uno Co• Inc., LEIB ST. I TilE J". Strong, sirupie and durable. One boy does the work four men.50, cnsh with or­ d(·r. Price cents. Send for our Special Offer ! ------ ------ --- fiutomobile Running Gears WITH PRESSED STEEL ANGLE IRON FRAMES Also all styles bodies. The Express System Saves Money., Port Washington, Wis. 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., 308 Park St."��;::;;·1J-Neatest, simplest and be,t on Ithe market. 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.ven any inventor furnishing with model sketch and a brief description the device question., 2109 North Ninth St. 'Publishers '1. St. Louis, Mo. The Bible ofthe aero enthusiast, experi­ menter, builder, aviator and advertiser.. It will not run out and leave contact points dry. four cylinder., Athol. Don't take the side shows and miss the main show i the big tent. engine made has wide range use. l3-in. Scale drawings of mac hine, construction details, subscribers' forum. CRAY MOTOR CO. All communications are strictly confidential. CO. MIC . Try One. THE EDISON CONCRETE HOUSE q How constructed. M Broadway, New York B ranch Office.• 46 "St " Foot aml ar Power Screw Cutting Au��t LathesFOR FINE, ACCURATE WORK Send for Catalogue B.iliu(', in. WilliAMS BROS Ithaca. Ours the Oldest agency for securing patents ; it was established over sixty-five years ago., Manufacturers, 417 West 15th SI., 507 Olive Street, St., Chicago, This our 58th year.00 SI'JIId tor 232 page catalog No. 918 Chestnut St. GILSON MFG. Send for Lathe Catalog. 1\[0(. 361 roadway, New ork, or 625 Street, Washington, C. WILLIAMS, BROWN EARLE, Ine. 25c., and all newsdeal ers. regard to securing valid patent protpction for their in­ v Trade-:llarks and CopyrightM registered. A E-For Sixty Ye:m' the Standard the WOJ'ld for Quality.l:ulC>. 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. Senel )'onr water pres;;nre and silt supply pipe. "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. 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. Ruby St. 3 One contains carbon residue, foreign matter, acid, impurities like all cylinder (mineral) oils., Cincinnati, Ohio Fon G NSMITHS.01' for Mechanics find Tradesmen. 1492-4 in. THE TEMPLE PUMP CO. with provision for circulation elec. - Every User Blue Prints Should Investigate the New EXPRESS System Blue Printing Automatic, saves half the cost. swin�. oxclusively the manufacture 2. 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. For user:" Blue Print Paper pply Lanting Machines for making blue print paper linen. Sag naw; ich A. 3 One not too light properly lubricate and keep lubricated any bearing (ballbearing ordinary bearing). J\dive Ag'ents wanted. 695 Water Street, Seneca Falls, Y. Lowest cost because it delivers greatest available power per horse. makes Blue Prints, Black Prints and Brown Prints. and states that pays better put over .. STAI-:'RETT CO. bottles. 625 Wash . Send for catalo. 1 for complete catalog today••teU8 all about how these high grade lilotors are built tbe largost plant the world devoted.,an Supplement 685. ALOE CO. . illustrated article published in Scientific meric. THE SEBASTIAN IS-INCH ENGINE LATHE HIGH GRADE LOW PRICE Automobile Builders. "FREE" Write for Catalogue. ('at nlog free. Yearly subscription, $3. Patents and 11 Paten secured., 50c.. Order yonI' motor hom dealer from us. ���. Established 1872. SENECA FALLS MFG. A Free Opinion the probable patenta­ bility iTlventi�n will readily gi. Arrane-ed for Steam or Foot Power, Velocipede or Stand-up rrreadle.. Write once for generous sample bottle and Magneto Bulletin. in. The element made very com,;;act. Let explain. , concern. Louis, Mo. YOU WILL MAKE MISTAKE YOU NOT WRITE FOR INFORMATIQN., L'".blisbed 18IiO-ALOl<: Civil Engineering and Surveying Instruments DRA WING MATERIALS SIJPPLIES B . Both free. \-Vorl{s day NigJlt-makes prints any lenvth. Easily lucked or released turning handle. CO. vehicle manufacturer using the battery reports that charged ex· hausted battery A·4 cellR the rate of 100 amperes for short tin1('. Price cents mail.