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