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