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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Louis, Mo."w York and London. Louis, Mo. Don't take the side shows and miss the main show i the big tent. The element made very com,;;act. slow speed, high duty engine. The Bible ofthe aero enthusiast, experi­ menter, builder, aviator and advertiser. BORBEIN AUTO CO. WILLIAMS, BROWN EARLE, Ine. Esb. WilliAMS BROS Ithaca.50, cnsh with or­ d(·r. , concern. Sold all garages, auto supply dealers, hardware and general stores-10c. Order from your newsdealer from .. two cylinder. each ' brought in- Istantly into u,e bal joint . 361 roadway, New ork, or 625 Street, Washington, C. connection. 1 for complete catalog today••teU8 all about how these high grade lilotors are built tbe largost plant the world devoted. . STAI-:'RETT CO. S ENTI AME RICAN A ttache(J sny water faucet will deyelop lip to according: s i ze pipe and W:ltB!' pre!;,�llre. Patents and 11 Paten secured. 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. 'Publishers '1. DE P'T , /"'K'# TAPES AND RULES ARE THE BEST. A. ('at nlog free. 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. Lowest fuel cost for runs Gasoline, Kerosene- Distillate, Gas Alcohol and has perfect ubrication. WE LL DRILLING MACHINES Over sizes and 8tyles, for rilling either deep or shallow wells any kind soi rock. Scale drawings of mac hine, construction details, subscribers' forum. pipe., ROCKFORD, h. LA FAYETTE, IND. vehicle manufacturer using the battery reports that charged ex· hausted battery A·4 cellR the rate of 100 amperes for short tin1('. CIENTTFTC A:\I ERTCAN Sf' PP1. pressure, in. regard to securing valid patent protpction for their in­ v Trade-:llarks and CopyrightM registered. Let explain.r MUNN COMPANY, Inc. l3-in. THE SEBASTIAN IS-INCH ENGINE LATHE HIGH GRADE LOW PRICE Automobile Builders. pipe, Ibs. For sale uno Co• Inc.. Send for Lathe Catalog. One boy does the work four men. CRAY MOTOR CO. Arrane-ed for Steam or Foot Power, Velocipede or Stand-up rrreadle. Price cents mail., Athol. a ONE OIL COMPANY, BROADWAY, New York City. Improved bucket wheel construction. All communications are strictly confidential., LEIB ST. 25c. 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.• 46 "St " Foot aml ar Power Screw Cutting Au��t LathesFOR FINE, ACCURATE WORK Send for Catalogue B. /). water during long periods the life t>f the cell. Catalog free. 3 One not too light properly lubricate and keep lubricated any bearing (ballbearing ordinary bearing).00. BABBITT METALS. 695 Water Street, Seneca Falls, Y. D WAT MOTOR . Please mention the Scientific American when writing- advertisers through wide range, and may far hig]her than would safe with the lead battery. Ours the Oldest agency for securing patents ; it was established over sixty-five years ago. For user:" Blue Print Paper pply Lanting Machines for making blue print paper linen.. Only pel'feet small motor made. Easily lucked or released turning handle. State your requirement\> and get our adVIse.!!!_ and B K TYPES FOR MARINE AUTOMOBILE and STA· TIONARY ENGINES SEND FOR LAT EST BULLETIN 557 THE flOLTZER-CABOT ELECTRIC CO. 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. THE POWER CONTRACTOR'S FAVORITE ENGINE. 625 Wash . l\Ionev b:lcl;; for allY reason. SENECA FALLS MFG., and all newsdeal ers. Ball­ bearing, safety starting handles for all makes cars. PRICE 11<1. - Every User Blue Prints Should Investigate the New EXPRESS System Blue Printing Automatic, saves half the cost. oxclusively the manufacture 2.01' for Mechanics find Tradesmen. L O. Established 1872. Write once for generous sample bottle and Magneto Bulletin.l:ulC>. The nature the support rna· terials and the method applying the active material the plates enable the cell stand dead short circuits without injury. sYz single cylinder. in. MO�M. Don't scoff.. makes Blue Prints, Black Prints and Brown Prints.,an Supplement 685. 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. Send fOl Catalog I>o. CO. A. Try One. Ruby St., 1 Legal Notices IN VENTORS are Invited communicate with Munn o.ven any inventor furnishing with model sketch and a brief description the device question. With engines llorse powerR. Yearly subscription, $3. Lowest cost because it delivers greatest available power per horse. ''''ashing ., 308 Park St. 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. and states that pays better put over . Order yonI' motor hom dealer from us.. bottles.blisbed 18IiO-ALOl<: Civil Engineering and Surveying Instruments DRA WING MATERIALS SIJPPLIES B . Sag naw; ich A., Cincinnati, Ohio Fon G NSMITHS. -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.L, Write for Free Sample Manufactured by T Y C CO.., Dept., Philadelphia, Pa. W. I TilE J". Senel )'onr water pres;;nre and silt supply pipe. ]6. J\dive Ag'ents wanted. 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., L'". From 9-in. engine made has wide range use. ALOE CO. Send for our Special Offer ! ------ ------ --- fiutomobile Running Gears WITH PRESSED STEEL ANGLE IRON FRAMES Also all styles bodies. THE TEMPLE PUMP CO. A E-For Sixty Ye:m' the Standard the WOJ'ld for Quality. St. trolyte because the latter constant, chemically, electrically and physically. HOLTZER-CABOT GAS ENGINE JUMP SPARK and M. It will not run out and leave contact points dry. 1\[0(. Eight sharp cut­ tmg edges. 1492-4 in. The Express System Saves Money. 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. Manufactured the The Ke)Jstone Safety Starling Handle Co. swin�. (I'or sale everywhere. \-Vorl{s day NigJlt-makes prints any lenvth., 50c. 3 One contains carbon residue, foreign matter, acid, impurities like all cylinder (mineral) oils. Both free."��;::;;·1J-Neatest, simplest and be,t on Ithe market. Strong, sirupie and durable. A Free Opinion the probable patenta­ bility iTlventi�n will readily gi., 2109 North Ninth St. TOOL MAKERS, EXPER I· M ENTAL PAIR WO ETC. 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. CO. ]8-B. In charging, the rate can varied 3 One not too heavy-will positively not gum clog, collect dust dirt, harden dry out. Our IIand-Book Patents will sent free on request.l1lal'., Chicago, This our 58th year. "FREE" Write for Catalogue. Net price $5, cas witlt orrle-l'.-SIX IMPORTA� T formulas. i\'1ounted on wheels o�· tonl ls., Manufacturers, 417 West 15th SI. 361 Broadway, New York WHAI ONE MAGNETO OIL ? January 4.water pres­ sure; lbs. THE EDISON CONCRETE HOUSE q How constructed. 1). EMEXT 23.00 SI'JIId tor 232 page catalog No. Send for catalo. , 4" Walnut Street, Philadelphia, Pa. 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. MIC . Write/orcatalogue once, mentioning thispaper. 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. GILSON MFG. YOU WILL MAKE MISTAKE YOU NOT WRITE FOR INFORMATIQN. Accepted the authority. "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.. illustrated article published in Scientific meric.cyc1e motorS. DETROIT. Garages, Repair and General Jobbing Shops find this the ideal lathe for their work. with provision for circulation elec., 507 Olive Street, St. M Broadway, New York B ranch Office. The Sebastian Lathe Co•• 120 Culvert SI. BAR .. Sent FREE" A. Any mechanic can opprat e them easi Send for eatalol!. Y. ���., Port Washington, Wis. any battery any time for half the CO'lt bearing of new battery. four cylinder.iliu(', in. Price cents