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