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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Improved bucket wheel construction. The element made very com,;;act. pressure, in. ''''ashing . LA FAYETTE, IND. , 4" Walnut Street, Philadelphia, Pa. For sale uno Co• Inc. CIENTTFTC A:\I ERTCAN Sf' PP1. The Express System Saves Money. All communications are strictly confidential. D WAT MOTOR . 3 One not too light properly lubricate and keep lubricated any bearing (ballbearing ordinary bearing). WilliAMS BROS Ithaca. bottles. Ours the Oldest agency for securing patents ; it was established over sixty-five years ago., Athol. slow speed, high duty engine., 507 Olive Street, St. l\Ionev b:lcl;; for allY reason. For user:" Blue Print Paper pply Lanting Machines for making blue print paper linen. engine made has wide range use. CO. THE TEMPLE PUMP CO.• 46 "St " Foot aml ar Power Screw Cutting Au��t LathesFOR FINE, ACCURATE WORK Send for Catalogue B. Please mention the Scientific American when writing- advertisers through wide range, and may far hig]her than would safe with the lead battery. two cylinder., Dept. Don't take the side shows and miss the main show i the big tent. vehicle manufacturer using the battery reports that charged ex· hausted battery A·4 cellR the rate of 100 amperes for short tin1('., 308 Park St. PRICE 11<1.50, cnsh with or­ d(·r. Arrane-ed for Steam or Foot Power, Velocipede or Stand-up rrreadle. pipe, Ibs. 625 Wash . Price cents. ]6.water pres­ sure; lbs. SENECA FALLS MFG.l1lal'. DETROIT., LEIB ST., Cincinnati, Ohio Fon G NSMITHS. "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. S ENTI AME RICAN A ttache(J sny water faucet will deyelop lip to according: s i ze pipe and W:ltB!' pre!;,�llre. Strong, sirupie and durable. CO., Chicago, This our 58th year. Send for catalo. Sold all garages, auto supply dealers, hardware and general stores-10c. Manufactured the The Ke)Jstone Safety Starling Handle Co. WILLIAMS, BROWN EARLE, Ine. Order yonI' motor hom dealer from us. I TilE J". GILSON MFG. 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.r MUNN COMPANY, Inc. 1 for complete catalog today••teU8 all about how these high grade lilotors are built tbe largost plant the world devoted. A. It will not run out and leave contact points dry. trolyte because the latter constant, chemically, electrically and physically. Yearly subscription, $3.. four cylinder. 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., ROCKFORD, h. 25c. MO�M. Louis, Mo. L O. /). Write/orcatalogue once, mentioning thispaper. Catalog free. water during long periods the life t>f the cell. Patents and 11 Paten secured. Sag naw; ich A. BABBITT METALS. Order from your newsdealer from . any battery any time for half the CO'lt bearing of new battery. Both free., Philadelphia, Pa. 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. Established 1872. In charging, the rate can varied 3 One not too heavy-will positively not gum clog, collect dust dirt, harden dry out. One boy does the work four men. TOOL MAKERS, EXPER I· M ENTAL PAIR WO ETC.!!!_ and B K TYPES FOR MARINE AUTOMOBILE and STA· TIONARY ENGINES SEND FOR LAT EST BULLETIN 557 THE flOLTZER-CABOT ELECTRIC CO. W. WE LL DRILLING MACHINES Over sizes and 8tyles, for rilling either deep or shallow wells any kind soi rock. and states that pays better put over . A. swin�. STAI-:'RETT CO. Y. Scale drawings of mac hine, construction details, subscribers' forum. J\dive Ag'ents wanted. State your requirement\> and get our adVIse. 361 Broadway, New York WHAI ONE MAGNETO OIL ? January 4. Send fOl Catalog I>o.. ('at nlog free. Send for Lathe Catalog. Price cents mail.ven any inventor furnishing with model sketch and a brief description the device question. BORBEIN AUTO CO. 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. 695 Water Street, Seneca Falls, Y. oxclusively the manufacture 2. Senel )'onr water pres;;nre and silt supply pipe.cyc1e motorS. i\'1ounted on wheels o�· tonl ls. a ONE OIL COMPANY, BROADWAY, New York City., 50c. Lowest fuel cost for runs Gasoline, Kerosene- Distillate, Gas Alcohol and has perfect ubrication. in. - Every User Blue Prints Should Investigate the New EXPRESS System Blue Printing Automatic, saves half the cost. pipe.iliu(', in., 2109 North Ninth St., 1 Legal Notices IN VENTORS are Invited communicate with Munn o. 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. The nature the support rna· terials and the method applying the active material the plates enable the cell stand dead short circuits without injury. l3-in..blisbed 18IiO-ALOl<: Civil Engineering and Surveying Instruments DRA WING MATERIALS SIJPPLIES B . sYz single cylinder. ���. The Sebastian Lathe Co•• 120 Culvert SI. Our IIand-Book Patents will sent free on request. illustrated article published in Scientific meric. 1\[0(. Net price $5, cas witlt orrle-l'. THE SEBASTIAN IS-INCH ENGINE LATHE HIGH GRADE LOW PRICE Automobile Builders. 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. "FREE" Write for Catalogue. BAR . 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.,an Supplement 685. each ' brought in- Istantly into u,e bal joint . \-Vorl{s day NigJlt-makes prints any lenvth. THE POWER CONTRACTOR'S FAVORITE ENGINE. MIC . Try One. DE P'T , /"'K'# TAPES AND RULES ARE THE BEST. ]8-B. Any mechanic can opprat e them easi Send for eatalol!.L, Write for Free Sample Manufactured by T Y C CO. connection. Accepted the authority. Ruby St. EMEXT 23.. 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. M Broadway, New York B ranch Office.. 918 Chestnut St. Send for our Special Offer ! ------ ------ --- fiutomobile Running Gears WITH PRESSED STEEL ANGLE IRON FRAMES Also all styles bodies. Don't scoff. Only pel'feet small motor made.01' for Mechanics find Tradesmen. Write once for generous sample bottle and Magneto Bulletin.00. Lowest cost because it delivers greatest available power per horse. .l:ulC>.. (I'or sale everywhere. 361 roadway, New ork, or 625 Street, Washington, C. 1)."��;::;;·1J-Neatest, simplest and be,t on Ithe market. Sent FREE" A. 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., Port Washington, Wis. Let explain. Eight sharp cut­ tmg edges. regard to securing valid patent protpction for their in­ v Trade-:llarks and CopyrightM registered. 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. , concern. Esb. 'Publishers '1.. 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., Manufacturers, 417 West 15th SI. St. CRAY MOTOR 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. HOLTZER-CABOT GAS ENGINE JUMP SPARK and M. Easily lucked or released turning handle. YOU WILL MAKE MISTAKE YOU NOT WRITE FOR INFORMATIQN.00 SI'JIId tor 232 page catalog No. A Free Opinion the probable patenta­ bility iTlventi�n will readily gi. THE EDISON CONCRETE HOUSE q How constructed."w York and London. Louis, Mo. The Bible ofthe aero enthusiast, experi­ menter, builder, aviator and advertiser. makes Blue Prints, Black Prints and Brown Prints. 1492-4 in. With engines llorse powerR., L'"., and all newsdeal ers. A E-For Sixty Ye:m' the Standard the WOJ'ld for Quality..-SIX IMPORTA� T formulas. From 9-in. ALOE CO. Ball­ bearing, safety starting handles for all makes cars. Garages, Repair and General Jobbing Shops find this the ideal lathe for their work. with provision for circulation elec