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