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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, Chicago, This our 58th year. 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. , 4" Walnut Street, Philadelphia, Pa. Louis, Mo. BAR . 'Publishers '1. STAI-:'RETT CO.r MUNN COMPANY, Inc. Let explain. two cylinder. MO�M. 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. Ours the Oldest agency for securing patents ; it was established over sixty-five years ago. pipe., 50c. water during long periods the life t>f the cell. ���. 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.iliu(', in. 1 for complete catalog today••teU8 all about how these high grade lilotors are built tbe largost plant the world devoted. ]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. Esb. 25c. Ball­ bearing, safety starting handles for all makes cars. Both free.water pres­ sure; lbs. Sent FREE" A., 507 Olive Street, St., ROCKFORD, h. 918 Chestnut St. Net price $5, cas witlt orrle-l'.. Send for our Special Offer ! ------ ------ --- fiutomobile Running Gears WITH PRESSED STEEL ANGLE IRON FRAMES Also all styles bodies. Send fOl Catalog I>o. Senel )'onr water pres;;nre and silt supply pipe. In charging, the rate can varied 3 One not too heavy-will positively not gum clog, collect dust dirt, harden dry out. Catalog free. A.-SIX IMPORTA� T formulas. how much it will cost, practical from archi· tecturaI and engineering standpoint ? These and other important questions relating the structure are discussed good, thorough. St. Patents and 11 Paten secured. Easily lucked or released turning handle.L, Write for Free Sample Manufactured by T Y C CO. regard to securing valid patent protpction for their in­ v Trade-:llarks and CopyrightM registered. i\'1ounted on wheels o�· tonl ls. each ' brought in- Istantly into u,e bal joint . Lowest cost because it delivers greatest available power per horse. L O. Only pel'feet small motor made. I TilE J". (I'or sale everywhere.. D WAT MOTOR . Sold all garages, auto supply dealers, hardware and general stores-10c. "FREE" Write for Catalogue. BABBITT METALS., 308 Park St. Send for catalo. l\Ionev b:lcl;; for allY reason.blisbed 18IiO-ALOl<: Civil Engineering and Surveying Instruments DRA WING MATERIALS SIJPPLIES B . 1\[0(. Order from your newsdealer from . a ONE OIL COMPANY, BROADWAY, New York City., and all newsdeal ers.• 46 "St " Foot aml ar Power Screw Cutting Au��t LathesFOR FINE, ACCURATE WORK Send for Catalogue B., 2109 North Ninth St. ('at nlog free. 695 Water Street, Seneca Falls, Y. Scale drawings of mac hine, construction details, subscribers' forum. four cylinder. ]8-B. MIC . bottles.00 SI'JIId tor 232 page catalog No. WE LL DRILLING MACHINES Over sizes and 8tyles, for rilling either deep or shallow wells any kind soi rock. 361 Broadway, New York WHAI ONE MAGNETO OIL ? January 4. DE P'T , /"'K'# TAPES AND RULES ARE THE BEST. 1). A E-For Sixty Ye:m' the Standard the WOJ'ld for Quality. 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. oxclusively the manufacture 2. sYz single cylinder. WILLIAMS, BROWN EARLE, Ine..!!!_ and B K TYPES FOR MARINE AUTOMOBILE and STA· TIONARY ENGINES SEND FOR LAT EST BULLETIN 557 THE flOLTZER-CABOT ELECTRIC CO. The Sebastian Lathe Co•• 120 Culvert SI. DETROIT. For user:" Blue Print Paper pply Lanting Machines for making blue print paper linen., L'". 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., Athol. 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. swin�. 3 One contains carbon residue, foreign matter, acid, impurities like all cylinder (mineral) oils. pipe, Ibs.. BORBEIN AUTO CO. From 9-in. Our IIand-Book Patents will sent free on request. Order yonI' motor hom dealer from us."w York and London.00. PRICE 11<1. vehicle manufacturer using the battery reports that charged ex· hausted battery A·4 cellR the rate of 100 amperes for short tin1('. THE SEBASTIAN IS-INCH ENGINE LATHE HIGH GRADE LOW PRICE Automobile Builders. All communications are strictly confidential.l:ulC>., Port Washington, Wis. Eight sharp cut­ tmg edges. 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. Try One., Manufacturers, 417 West 15th SI. TOOL MAKERS, EXPER I· M ENTAL PAIR WO ETC. 1492-4 in. Lowest fuel cost for runs Gasoline, Kerosene- Distillate, Gas Alcohol and has perfect ubrication. and states that pays better put over . , concern. engine made has wide range use. LA FAYETTE, IND.ven any inventor furnishing with model sketch and a brief description the device question. The Express System Saves Money.cyc1e motorS. slow speed, high duty engine. pressure, in... A. The element made very com,;;act. CRAY MOTOR CO. - Every User Blue Prints Should Investigate the New EXPRESS System Blue Printing Automatic, saves half the cost. Price cents. For sale uno Co• Inc.50, cnsh with or­ d(·r. THE POWER CONTRACTOR'S FAVORITE ENGINE. Don't take the side shows and miss the main show i the big tent. Yearly subscription, $3. Price cents mail. Please mention the Scientific American when writing- advertisers through wide range, and may far hig]her than would safe with the lead battery. THE EDISON CONCRETE HOUSE q How constructed. 625 Wash . A Free Opinion the probable patenta­ bility iTlventi�n will readily gi. 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.l1lal'. CO. Ruby St. . The Bible ofthe aero enthusiast, experi­ menter, builder, aviator and advertiser. HOLTZER-CABOT GAS ENGINE JUMP SPARK and M.. 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. 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. Arrane-ed for Steam or Foot Power, Velocipede or Stand-up rrreadle."��;::;;·1J-Neatest, simplest and be,t on Ithe market. Write/orcatalogue once, mentioning thispaper.01' for Mechanics find Tradesmen. connection. Established 1872. Manufactured the The Ke)Jstone Safety Starling Handle Co. THE TEMPLE PUMP CO. YOU WILL MAKE MISTAKE YOU NOT WRITE FOR INFORMATIQN. EMEXT 23. M Broadway, New York B ranch Office. CIENTTFTC A:\I ERTCAN Sf' PP1. \-Vorl{s day NigJlt-makes prints any lenvth. State your requirement\> and get our adVIse. l3-in. illustrated article published in Scientific meric. J\dive Ag'ents wanted. Y., LEIB ST. -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.,an Supplement 685. with provision for circulation elec. in. It will not run out and leave contact points dry. Sag naw; ich A. /). Any mechanic can opprat e them easi Send for eatalol!., 1 Legal Notices IN VENTORS are Invited communicate with Munn o. WilliAMS BROS Ithaca. One boy does the work four men. makes Blue Prints, Black Prints and Brown Prints. Write once for generous sample bottle and Magneto Bulletin. 3 One not too light properly lubricate and keep lubricated any bearing (ballbearing ordinary bearing). CO., Philadelphia, Pa. Improved bucket wheel construction. SENECA FALLS MFG.. any battery any time for half the CO'lt bearing of new battery. W. Don't scoff. Louis, Mo. Strong, sirupie and durable. ALOE CO. With engines llorse powerR., Cincinnati, Ohio Fon G NSMITHS. 361 roadway, New ork, or 625 Street, Washington, C. GILSON MFG. ''''ashing ., Dept. trolyte because the latter constant, chemically, electrically and physically. "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. Accepted the authority. Garages, Repair and General Jobbing Shops find this the ideal lathe for their work. Send for Lathe Catalog. S ENTI AME RICAN A ttache(J sny water faucet will deyelop lip to according: s i ze pipe and W:ltB!' pre!;,�llre