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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swin�. Only pel'feet small motor made. ���. Louis, Mo. Easily lucked or released turning handle. 361 roadway, New ork, or 625 Street, Washington, C. Let explain. 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 all newsdeal ers., Port Washington, Wis.00. TOOL MAKERS, EXPER I· M ENTAL PAIR WO ETC. Try One. Lowest fuel cost for runs Gasoline, Kerosene- Distillate, Gas Alcohol and has perfect ubrication. pipe, Ibs. L O.. 1492-4 in. Y. vehicle manufacturer using the battery reports that charged ex· hausted battery A·4 cellR the rate of 100 amperes for short tin1('. For user:" Blue Print Paper pply Lanting Machines for making blue print paper linen. BORBEIN AUTO CO.ven any inventor furnishing with model sketch and a brief description the device question. Patents and 11 Paten secured. bottles. any battery any time for half the CO'lt bearing of new battery.!!!_ and B K TYPES FOR MARINE AUTOMOBILE and STA· TIONARY ENGINES SEND FOR LAT EST BULLETIN 557 THE flOLTZER-CABOT ELECTRIC CO. in. , 4" Walnut Street, Philadelphia, Pa. illustrated article published in Scientific meric. It will not run out and leave contact points dry. Send for Lathe Catalog., Manufacturers, 417 West 15th SI. The element made very com,;;act. ]8-B. how much it will cost, practical from archi· tecturaI and engineering standpoint ? These and other important questions relating the structure are discussed good, thorough.01' for Mechanics find Tradesmen. makes Blue Prints, Black Prints and Brown Prints. DETROIT., 1 Legal Notices IN VENTORS are Invited communicate with Munn o. 3 One not too light properly lubricate and keep lubricated any bearing (ballbearing ordinary bearing). A E-For Sixty Ye:m' the Standard the WOJ'ld for Quality.cyc1e motorS. Improved bucket wheel construction. 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. 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. ALOE CO. Garages, Repair and General Jobbing Shops find this the ideal lathe for their work. . St.. 918 Chestnut St. S ENTI AME RICAN A ttache(J sny water faucet will deyelop lip to according: s i ze pipe and W:ltB!' pre!;,�llre.• 46 "St " Foot aml ar Power Screw Cutting Au��t LathesFOR FINE, ACCURATE WORK Send for Catalogue B. -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. Price cents. BABBITT METALS., 2109 North Ninth St. "FREE" Write for Catalogue.50, cnsh with or­ d(·r., ROCKFORD, h. Order from your newsdealer from . Catalog free.. MIC . slow speed, high duty engine. pipe. THE SEBASTIAN IS-INCH ENGINE LATHE HIGH GRADE LOW PRICE Automobile Builders. ''''ashing . two cylinder. Strong, sirupie and durable., Dept. 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. Send for catalo. CO. 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. Our IIand-Book Patents will sent free on request. (I'or sale everywhere. a ONE OIL COMPANY, BROADWAY, New York City. HOLTZER-CABOT GAS ENGINE JUMP SPARK and M.water pres­ sure; lbs.-SIX IMPORTA� T formulas. engine made has wide range use. A. Arrane-ed for Steam or Foot Power, Velocipede or Stand-up rrreadle. With engines llorse powerR. 1\[0(., 50c. All communications are strictly confidential. 1). Sag naw; ich A. sYz single cylinder., L'". Yearly subscription, $3. pressure, in.. 3 One contains carbon residue, foreign matter, acid, impurities like all cylinder (mineral) oils.. with provision for circulation elec. Ours the Oldest agency for securing patents ; it was established over sixty-five years ago. WE LL DRILLING MACHINES Over sizes and 8tyles, for rilling either deep or shallow wells any kind soi rock. Senel )'onr water pres;;nre and silt supply pipe. STAI-:'RETT CO. Net price $5, cas witlt orrle-l'. From 9-in. Write once for generous sample bottle and Magneto Bulletin. D WAT MOTOR . Order yonI' motor hom dealer from us., Philadelphia, Pa. Both free. Eight sharp cut­ tmg edges. 361 Broadway, New York WHAI ONE MAGNETO OIL ? January 4.., 308 Park St., Athol. trolyte because the latter constant, chemically, electrically and physically. ('at nlog free. The Bible ofthe aero enthusiast, experi­ menter, builder, aviator and advertiser. CIENTTFTC A:\I ERTCAN Sf' PP1..l:ulC>. /). Any mechanic can opprat e them easi Send for eatalol!. 25c. THE POWER CONTRACTOR'S FAVORITE ENGINE. l3-in. Send fOl Catalog I>o. regard to securing valid patent protpction for their in­ v Trade-:llarks and CopyrightM registered. each ' brought in- Istantly into u,e bal joint . In estimating the true commercial efficiency of road-vehicle transportation, the ton· miles obtained must compared with the total cost operation the vehi- cle, with due allowance for all-around reo liability. GILSON MFG. J\dive Ag'ents wanted."��;::;;·1J-Neatest, simplest and be,t on Ithe market. I TilE J"., 507 Olive Street, St. and states that pays better put over . The Sebastian Lathe Co•• 120 Culvert SI. oxclusively the manufacture 2. Please mention the Scientific American when writing- advertisers through wide range, and may far hig]her than would safe with the lead battery. Lowest cost because it delivers greatest available power per horse. BAR . BIotor for grmding, polishing, fans, sewing mtwhines for Doctors, Dl'ntists, Urn;!' �:)��:Il��l�d;�lfe!�$e;:'����f9���ei�� i �:�· tor and pulle:v 'olll)� $2. WILLIAMS, BROWN EARLE, Ine., LEIB ST. "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. EMEXT 23. 695 Water Street, Seneca Falls, Y. Write/orcatalogue once, mentioning thispaper. LA FAYETTE, IND. 1 for complete catalog today••teU8 all about how these high grade lilotors are built tbe largost plant the world devoted. Ruby St.r MUNN COMPANY, Inc. Send for our Special Offer ! ------ ------ --- fiutomobile Running Gears WITH PRESSED STEEL ANGLE IRON FRAMES Also all styles bodies. 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., Cincinnati, Ohio Fon G NSMITHS. MO�M. Accepted the authority. i\'1ounted on wheels o�· tonl ls. M Broadway, New York B ranch Office. connection. 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. DE P'T , /"'K'# TAPES AND RULES ARE THE BEST. Don't take the side shows and miss the main show i the big tent. A. The nature the support rna· terials and the method applying the active material the plates enable the cell stand dead short circuits without injury. YOU WILL MAKE MISTAKE YOU NOT WRITE FOR INFORMATIQN.00 SI'JIId tor 232 page catalog No. ]6.iliu(', in. W. For sale uno Co• Inc. water during long periods the life t>f the cell. PRICE 11<1. Price cents mail.. 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. l\Ionev b:lcl;; for allY reason. A Free Opinion the probable patenta­ bility iTlventi�n will readily gi.,an Supplement 685. CRAY MOTOR CO. 625 Wash . State your requirement\> and get our adVIse., Chicago, This our 58th year. Esb. Don't scoff. Louis, Mo. The Express System Saves Money. One boy does the work four men.blisbed 18IiO-ALOl<: Civil Engineering and Surveying Instruments DRA WING MATERIALS SIJPPLIES B . In charging, the rate can varied 3 One not too heavy-will positively not gum clog, collect dust dirt, harden dry out. \-Vorl{s day NigJlt-makes prints any lenvth. four cylinder. SENECA FALLS MFG. Ball­ bearing, safety starting handles for all makes cars. Scale drawings of mac hine, construction details, subscribers' forum. , concern.L, Write for Free Sample Manufactured by T Y C CO. Sent FREE" A. WilliAMS BROS Ithaca. THE TEMPLE PUMP CO. 'Publishers '1. Manufactured the The Ke)Jstone Safety Starling Handle Co. - Every User Blue Prints Should Investigate the New EXPRESS System Blue Printing Automatic, saves half the cost. Sold all garages, auto supply dealers, hardware and general stores-10c. Established 1872. CO.l1lal'."w York and London. THE EDISON CONCRETE HOUSE q How constructed