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