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