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