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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CO. 361 roadway, New ork, or 625 Street, Washington, C. Arrane-ed for Steam or Foot Power, Velocipede or Stand-up rrreadle. DE P'T , /"'K'# TAPES AND RULES ARE THE BEST. WilliAMS BROS Ithaca. and states that pays better put over . WE LL DRILLING MACHINES Over sizes and 8tyles, for rilling either deep or shallow wells any kind soi rock. with provision for circulation elec. With engines llorse powerR. PRICE 11<1.00 SI'JIId tor 232 page catalog No. Y. 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. EMEXT 23. The Bible ofthe aero enthusiast, experi­ menter, builder, aviator and advertiser., Philadelphia, Pa.. four cylinder. 695 Water Street, Seneca Falls, Y. Order yonI' motor hom dealer from us. 25c. -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. Sold all garages, auto supply dealers, hardware and general stores-10c. 1 for complete catalog today••teU8 all about how these high grade lilotors are built tbe largost plant the world devoted. ('at nlog free. Price cents mail. Ruby St. water during long periods the life t>f the cell. BABBITT METALS. Louis, Mo. Strong, sirupie and durable. 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.-SIX IMPORTA� T formulas. . Both free. two cylinder. oxclusively the manufacture 2. 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. For sale uno Co• Inc. ]8-B. "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.. Scale drawings of mac hine, construction details, subscribers' forum. Send for Lathe Catalog. MIC . Easily lucked or released turning handle. S ENTI AME RICAN A ttache(J sny water faucet will deyelop lip to according: s i ze pipe and W:ltB!' pre!;,�llre. l3-in.r MUNN COMPANY, Inc.L, Write for Free Sample Manufactured by T Y C CO., ROCKFORD, h. HOLTZER-CABOT GAS ENGINE JUMP SPARK and M. Garages, Repair and General Jobbing Shops find this the ideal lathe for their work. LA FAYETTE, IND. i\'1ounted on wheels o�· tonl ls. Let explain. BAR . 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., Athol. Try One. Sent FREE" A. slow speed, high duty engine. From 9-in. pipe. STAI-:'RETT CO. vehicle manufacturer using the battery reports that charged ex· hausted battery A·4 cellR the rate of 100 amperes for short tin1('. Any mechanic can opprat e them easi Send for eatalol!. State your requirement\> and get our adVIse. For user:" Blue Print Paper pply Lanting Machines for making blue print paper linen., and all newsdeal ers. 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. Net price $5, cas witlt orrle-l'. 1\[0(. 'Publishers '1. Write/orcatalogue once, mentioning thispaper."��;::;;·1J-Neatest, simplest and be,t on Ithe market. each ' brought in- Istantly into u,e bal joint ..00. pressure, in. GILSON MFG., Port Washington, Wis. 625 Wash . MO�M. 1492-4 in. TOOL MAKERS, EXPER I· M ENTAL PAIR WO ETC.,an Supplement 685. SENECA FALLS MFG."w York and London. Ball­ bearing, safety starting handles for all makes cars., Manufacturers, 417 West 15th SI., Cincinnati, Ohio Fon G NSMITHS. "FREE" Write for Catalogue. any battery any time for half the CO'lt bearing of new battery. 3 One not too light properly lubricate and keep lubricated any bearing (ballbearing ordinary bearing).l:ulC>. trolyte because the latter constant, chemically, electrically and physically. THE TEMPLE PUMP CO. 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. Yearly subscription, $3. Accepted the authority. sYz single cylinder., 308 Park St. A. Louis, Mo. The Sebastian Lathe Co•• 120 Culvert SI. M Broadway, New York B ranch Office. D WAT MOTOR .. 361 Broadway, New York WHAI ONE MAGNETO OIL ? January 4. Send for catalo. Please mention the Scientific American when writing- advertisers through wide range, and may far hig]her than would safe with the lead battery. Send fOl Catalog I>o. A E-For Sixty Ye:m' the Standard the WOJ'ld for Quality. Catalog free. 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. Our IIand-Book Patents will sent free on request. CIENTTFTC A:\I ERTCAN Sf' PP1. , 4" Walnut Street, Philadelphia, Pa., 50c.01' for Mechanics find Tradesmen. W., 507 Olive Street, St.l1lal'.50, cnsh with or­ d(·r. illustrated article published in Scientific meric. Improved bucket wheel construction., Dept. One boy does the work four men. CRAY MOTOR CO.!!!_ and B K TYPES FOR MARINE AUTOMOBILE and STA· TIONARY ENGINES SEND FOR LAT EST BULLETIN 557 THE flOLTZER-CABOT ELECTRIC CO. pipe, Ibs. BORBEIN AUTO CO. ]6. THE SEBASTIAN IS-INCH ENGINE LATHE HIGH GRADE LOW PRICE Automobile Builders. Senel )'onr water pres;;nre and silt supply pipe., Chicago, This our 58th year. Lowest cost because it delivers greatest available power per horse. CO. a ONE OIL COMPANY, BROADWAY, New York City., 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. Esb. Manufactured the The Ke)Jstone Safety Starling Handle Co. Price cents., LEIB ST., 2109 North Ninth St. Don't scoff. The element made very com,;;act. ''''ashing ..iliu(', in. Send for our Special Offer ! ------ ------ --- fiutomobile Running Gears WITH PRESSED STEEL ANGLE IRON FRAMES Also all styles bodies. Eight sharp cut­ tmg edges. THE EDISON CONCRETE HOUSE q How constructed.. The Express System Saves Money. J\dive Ag'ents wanted. \-Vorl{s day NigJlt-makes prints any lenvth. swin�.cyc1e motorS. 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. , concern. 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. A Free Opinion the probable patenta­ bility iTlventi�n will readily gi. - Every User Blue Prints Should Investigate the New EXPRESS System Blue Printing Automatic, saves half the cost. in., L'". A. THE POWER CONTRACTOR'S FAVORITE ENGINE. 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. YOU WILL MAKE MISTAKE YOU NOT WRITE FOR INFORMATIQN.water pres­ sure; lbs. The nature the support rna· terials and the method applying the active material the plates enable the cell stand dead short circuits without injury. Established 1872. St. Only pel'feet small motor made. /). (I'or sale everywhere. engine made has wide range use. bottles. Order from your newsdealer from . WILLIAMS, BROWN EARLE, Ine. I TilE J". DETROIT. l\Ionev b:lcl;; for allY reason. L O.. 918 Chestnut St. how much it will cost, practical from archi· tecturaI and engineering standpoint ? These and other important questions relating the structure are discussed good, thorough. Sag naw; ich A.blisbed 18IiO-ALOl<: Civil Engineering and Surveying Instruments DRA WING MATERIALS SIJPPLIES B . Lowest fuel cost for runs Gasoline, Kerosene- Distillate, Gas Alcohol and has perfect ubrication. Ours the Oldest agency for securing patents ; it was established over sixty-five years ago. In charging, the rate can varied 3 One not too heavy-will positively not gum clog, collect dust dirt, harden dry out.• 46 "St " Foot aml ar Power Screw Cutting Au��t LathesFOR FINE, ACCURATE WORK Send for Catalogue B. makes Blue Prints, Black Prints and Brown Prints. regard to securing valid patent protpction for their in­ v Trade-:llarks and CopyrightM registered. connection. Write once for generous sample bottle and Magneto Bulletin. 3 One contains carbon residue, foreign matter, acid, impurities like all cylinder (mineral) oils.ven any inventor furnishing with model sketch and a brief description the device question. All communications are strictly confidential. ALOE CO.. Patents and 11 Paten secured. It will not run out and leave contact points dry. 1). ���