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