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