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