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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, Chicago, This our 58th year., 308 Park St. Garages, Repair and General Jobbing Shops find this the ideal lathe for their work. WILLIAMS, BROWN EARLE, Ine. 'Publishers '1. makes Blue Prints, Black Prints and Brown Prints. Write once for generous sample bottle and Magneto Bulletin. l3-in. St. Ball­ bearing, safety starting handles for all makes cars. 361 Broadway, New York WHAI ONE MAGNETO OIL ? January 4. Let explain. The Sebastian Lathe Co•• 120 Culvert SI. Lowest fuel cost for runs Gasoline, Kerosene- Distillate, Gas Alcohol and has perfect ubrication. with provision for circulation elec."��;::;;·1J-Neatest, simplest and be,t on Ithe market.00. Send for catalo.. Don't take the side shows and miss the main show i the big tent., Port Washington, Wis... ALOE CO. ('at nlog free. Louis, Mo. Accepted the authority., 50c. connection.. J\dive Ag'ents wanted. CO. ]6. SENECA FALLS MFG., Athol. 3 One contains carbon residue, foreign matter, acid, impurities like all cylinder (mineral) oils. Strong, sirupie and durable. -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., Philadelphia, Pa. ''''ashing . For sale uno Co• Inc. 3 One not too light properly lubricate and keep lubricated any bearing (ballbearing ordinary bearing). Sent FREE" A. I TilE J"., Cincinnati, Ohio Fon G NSMITHS. The Express System Saves Money. MIC . BAR ., 1 Legal Notices IN VENTORS are Invited communicate with Munn o. trolyte because the latter constant, chemically, electrically and physically. 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. - Every User Blue Prints Should Investigate the New EXPRESS System Blue Printing Automatic, saves half the cost. BABBITT METALS. sYz single cylinder. Send for Lathe Catalog. EMEXT 23. Established 1872.01' for Mechanics find Tradesmen. BORBEIN AUTO CO. , concern., Manufacturers, 417 West 15th SI. Write/orcatalogue once, mentioning thispaper. 1 for complete catalog today••teU8 all about how these high grade lilotors are built tbe largost plant the world devoted. 918 Chestnut St., L'". M Broadway, New York B ranch Office. 1\[0(. Sag naw; ich A. pipe.. Try One. A., ROCKFORD, h. A Free Opinion the probable patenta­ bility iTlventi�n will readily gi. swin�."w York and London. any battery any time for half the CO'lt bearing of new battery., 507 Olive Street, St.l1lal'. GILSON MFG.ven any inventor furnishing with model sketch and a brief description the device question. A E-For Sixty Ye:m' the Standard the WOJ'ld for Quality. Senel )'onr water pres;;nre and silt supply pipe. Our IIand-Book Patents will sent free on request. i\'1ounted on wheels o�· tonl ls., Dept. CIENTTFTC A:\I ERTCAN Sf' PP1. Improved bucket wheel construction. Manufactured the The Ke)Jstone Safety Starling Handle Co. 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. DETROIT. 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., LEIB ST.00 SI'JIId tor 232 page catalog No. l\Ionev b:lcl;; for allY reason. Catalog free.iliu(', in. Patents and 11 Paten secured. pipe, Ibs.. State your requirement\> and get our adVIse. ���.,an Supplement 685. Esb. Louis, Mo. L O. 25c. (I'or sale everywhere. Scale drawings of mac hine, construction details, subscribers' forum. how much it will cost, practical from archi· tecturaI and engineering standpoint ? These and other important questions relating the structure are discussed good, thorough.!!!_ and B K TYPES FOR MARINE AUTOMOBILE and STA· TIONARY ENGINES SEND FOR LAT EST BULLETIN 557 THE flOLTZER-CABOT ELECTRIC CO. 1). DE P'T , /"'K'# TAPES AND RULES ARE THE BEST. slow speed, high duty engine. Y. A. Net price $5, cas witlt orrle-l'. Price cents mail. THE EDISON CONCRETE HOUSE q How constructed. bottles. For user:" Blue Print Paper pply Lanting Machines for making blue print paper linen.-SIX IMPORTA� T formulas. WE LL DRILLING MACHINES Over sizes and 8tyles, for rilling either deep or shallow wells any kind soi rock. in. THE POWER CONTRACTOR'S FAVORITE ENGINE. 361 roadway, New ork, or 625 Street, Washington, C. Any mechanic can opprat e them easi Send for eatalol!. BIotor for grmding, polishing, fans, sewing mtwhines for Doctors, Dl'ntists, Urn;!' �:)��:Il��l�d;�lfe!�$e;:'����f9���ei�� i �:�· tor and pulle:v 'olll)� $2. illustrated article published in Scientific meric.water pres­ sure; lbs. . /). and states that pays better put over . CO. TOOL MAKERS, EXPER I· M ENTAL PAIR WO ETC. With engines llorse powerR. 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. regard to securing valid patent protpction for their in­ v Trade-:llarks and CopyrightM registered.L, Write for Free Sample Manufactured by T Y C CO.., and all newsdeal ers. Lowest cost because it delivers greatest available power per horse. Arrane-ed for Steam or Foot Power, Velocipede or Stand-up rrreadle. Both free.50, cnsh with or­ d(·r. Send fOl Catalog I>o. Easily lucked or released turning handle. pressure, in. S ENTI AME RICAN A ttache(J sny water faucet will deyelop lip to according: s i ze pipe and W:ltB!' pre!;,�llre., 2109 North Ninth St. ]8-B.l:ulC>. STAI-:'RETT CO. D WAT MOTOR . 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. two cylinder. Please mention the Scientific American when writing- advertisers through wide range, and may far hig]her than would safe with the lead battery. water during long periods the life t>f the cell. , 4" Walnut Street, Philadelphia, Pa. In charging, the rate can varied 3 One not too heavy-will positively not gum clog, collect dust dirt, harden dry out. four cylinder. Eight sharp cut­ tmg edges. From 9-in. Ours the Oldest agency for securing patents ; it was established over sixty-five years ago. It will not run out and leave contact points dry. Ruby St. 1492-4 in. Yearly subscription, $3.blisbed 18IiO-ALOl<: Civil Engineering and Surveying Instruments DRA WING MATERIALS SIJPPLIES B . LA FAYETTE, IND. Sold all garages, auto supply dealers, hardware and general stores-10c. 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. a ONE OIL COMPANY, BROADWAY, New York City. Don't scoff. The Bible ofthe aero enthusiast, experi­ menter, builder, aviator and advertiser. 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. Order yonI' motor hom dealer from us. 695 Water Street, Seneca Falls, Y.• 46 "St " Foot aml ar Power Screw Cutting Au��t LathesFOR FINE, ACCURATE WORK Send for Catalogue B. 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. PRICE 11<1. Price cents. "FREE" Write for Catalogue. The element made very com,;;act. All communications are strictly confidential. THE TEMPLE PUMP CO. THE SEBASTIAN IS-INCH ENGINE LATHE HIGH GRADE LOW PRICE Automobile Builders. CRAY MOTOR CO. YOU WILL MAKE MISTAKE YOU NOT WRITE FOR INFORMATIQN.r MUNN COMPANY, Inc. \-Vorl{s day NigJlt-makes prints any lenvth. One boy does the work four men. Send for our Special Offer ! ------ ------ --- fiutomobile Running Gears WITH PRESSED STEEL ANGLE IRON FRAMES Also all styles bodies. "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. oxclusively the manufacture 2. Only pel'feet small motor made. each ' brought in- Istantly into u,e bal joint . 625 Wash . W. The nature the support rna· terials and the method applying the active material the plates enable the cell stand dead short circuits without injury. Order from your newsdealer from .cyc1e motorS. MO�M.. WilliAMS BROS Ithaca. vehicle manufacturer using the battery reports that charged ex· hausted battery A·4 cellR the rate of 100 amperes for short tin1('. 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. engine made has wide range use