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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Price cents mail.l:ulC>. with provision for circulation elec. illustrated article published in Scientific meric. It will not run out and leave contact points dry. water during long periods the life t>f the cell. Y. a ONE OIL COMPANY, BROADWAY, New York City., 1 Legal Notices IN VENTORS are Invited communicate with Munn o. Ruby St. \-Vorl{s day NigJlt-makes prints any lenvth. Send fOl Catalog I>o. Scale drawings of mac hine, construction details, subscribers' forum. A. A E-For Sixty Ye:m' the Standard the WOJ'ld for Quality. 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.ven any inventor furnishing with model sketch and a brief description the device question. CO.. makes Blue Prints, Black Prints and Brown Prints. STAI-:'RETT CO. HOLTZER-CABOT GAS ENGINE JUMP SPARK and M. EMEXT 23. 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., 308 Park St. /). MIC . LA FAYETTE, IND. GILSON MFG. 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. i\'1ounted on wheels o�· tonl ls. ('at nlog free. YOU WILL MAKE MISTAKE YOU NOT WRITE FOR INFORMATIQN.. ]6.l1lal'. connection. . , 4" Walnut Street, Philadelphia, Pa., Manufacturers, 417 West 15th SI., Cincinnati, Ohio Fon G NSMITHS. ''''ashing . Louis, Mo. 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 Bible ofthe aero enthusiast, experi­ menter, builder, aviator and advertiser. 625 Wash . - Every User Blue Prints Should Investigate the New EXPRESS System Blue Printing Automatic, saves half the cost. in. Eight sharp cut­ tmg edges. (I'or sale everywhere. 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. Send for catalo. One boy does the work four men. pipe, Ibs. Established 1872.50, cnsh with or­ d(·r. Order from your newsdealer from . each ' brought in- Istantly into u,e bal joint . "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. slow speed, high duty engine. 'Publishers '1. pipe.!!!_ and B K TYPES FOR MARINE AUTOMOBILE and STA· TIONARY ENGINES SEND FOR LAT EST BULLETIN 557 THE flOLTZER-CABOT ELECTRIC CO. 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. 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. 3 One contains carbon residue, foreign matter, acid, impurities like all cylinder (mineral) oils. M Broadway, New York B ranch Office. Order yonI' motor hom dealer from us.00.• 46 "St " Foot aml ar Power Screw Cutting Au��t LathesFOR FINE, ACCURATE WORK Send for Catalogue B. DETROIT. A Free Opinion the probable patenta­ bility iTlventi�n will readily gi. CIENTTFTC A:\I ERTCAN Sf' PP1., Philadelphia, Pa. CRAY MOTOR CO. l3-in. Only pel'feet small motor made. how much it will cost, practical from archi· tecturaI and engineering standpoint ? These and other important questions relating the structure are discussed good, thorough. Don't take the side shows and miss the main show i the big tent. , concern. 1492-4 in.. Try One. Accepted the authority.. Our IIand-Book Patents will sent free on request. I TilE J". Any mechanic can opprat e them easi Send for eatalol!. bottles., Chicago, This our 58th year. Ball­ bearing, safety starting handles for all makes cars.. Improved bucket wheel construction. pressure, in.iliu(', in.. sYz single cylinder. 1\[0(.r MUNN COMPANY, Inc. D WAT MOTOR . WE LL DRILLING MACHINES Over sizes and 8tyles, for rilling either deep or shallow wells any kind soi rock. THE POWER CONTRACTOR'S FAVORITE ENGINE. ]8-B. The Express System Saves Money. 695 Water Street, Seneca Falls, Y. 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. trolyte because the latter constant, chemically, electrically and physically. and states that pays better put over . Esb. Don't scoff. 361 Broadway, New York WHAI ONE MAGNETO OIL ? January 4. Yearly subscription, $3. vehicle manufacturer using the battery reports that charged ex· hausted battery A·4 cellR the rate of 100 amperes for short tin1('. Garages, Repair and General Jobbing Shops find this the ideal lathe for their work., ROCKFORD, h. two cylinder. Manufactured the The Ke)Jstone Safety Starling Handle Co. 918 Chestnut St. Lowest cost because it delivers greatest available power per horse. BAR . Strong, sirupie and durable. 3 One not too light properly lubricate and keep lubricated any bearing (ballbearing ordinary bearing). TOOL MAKERS, EXPER I· M ENTAL PAIR WO ETC.cyc1e motorS. Let explain. All communications are strictly confidential. Patents and 11 Paten secured. Easily lucked or released turning handle. -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. WilliAMS BROS Ithaca. engine made has wide range use., 507 Olive Street, St.00 SI'JIId tor 232 page catalog No.. 361 roadway, New ork, or 625 Street, Washington, C. WILLIAMS, BROWN EARLE, Ine."w York and London., Port Washington, Wis. Write once for generous sample bottle and Magneto Bulletin. J\dive Ag'ents wanted. Both free."��;::;;·1J-Neatest, simplest and be,t on Ithe market. SENECA FALLS MFG. ALOE CO. Price cents. Send for Lathe Catalog. PRICE 11<1., Athol. swin�. THE EDISON CONCRETE HOUSE q How constructed. For user:" Blue Print Paper pply Lanting Machines for making blue print paper linen. Please mention the Scientific American when writing- advertisers through wide range, and may far hig]her than would safe with the lead battery. regard to securing valid patent protpction for their in­ v Trade-:llarks and CopyrightM registered. oxclusively the manufacture 2. Catalog free. With engines llorse powerR. Louis, Mo. State your requirement\> and get our adVIse. Net price $5, cas witlt orrle-l'. ���. Ours the Oldest agency for securing patents ; it was established over sixty-five years ago. DE P'T , /"'K'# TAPES AND RULES ARE THE BEST., LEIB ST. l\Ionev b:lcl;; for allY reason. four cylinder. Sent FREE" A. BABBITT METALS. S ENTI AME RICAN A ttache(J sny water faucet will deyelop lip to according: s i ze pipe and W:ltB!' pre!;,�llre. 1). The Sebastian Lathe Co•• 120 Culvert SI. Senel )'onr water pres;;nre and silt supply pipe. In charging, the rate can varied 3 One not too heavy-will positively not gum clog, collect dust dirt, harden dry out. THE SEBASTIAN IS-INCH ENGINE LATHE HIGH GRADE LOW PRICE Automobile Builders. Write/orcatalogue once, mentioning thispaper. The element made very com,;;act. "FREE" Write for Catalogue. Lowest fuel cost for runs Gasoline, Kerosene- Distillate, Gas Alcohol and has perfect ubrication. Sold all garages, auto supply dealers, hardware and general stores-10c. 25c. W. MO�M. 1 for complete catalog today••teU8 all about how these high grade lilotors are built tbe largost plant the world devoted. For sale uno Co• Inc. BORBEIN AUTO CO. St.,an Supplement 685. Arrane-ed for Steam or Foot Power, Velocipede or Stand-up rrreadle. 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.-SIX IMPORTA� T formulas.. CO. any battery any time for half the CO'lt bearing of new battery.water pres­ sure; lbs., and all newsdeal ers. The nature the support rna· terials and the method applying the active material the plates enable the cell stand dead short circuits without injury.blisbed 18IiO-ALOl<: Civil Engineering and Surveying Instruments DRA WING MATERIALS SIJPPLIES B . 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. Send for our Special Offer ! ------ ------ --- fiutomobile Running Gears WITH PRESSED STEEL ANGLE IRON FRAMES Also all styles bodies.01' for Mechanics find Tradesmen., L'"., 2109 North Ninth St., Dept. Sag naw; ich A. From 9-in. THE TEMPLE PUMP CO.L, Write for Free Sample Manufactured by T Y C CO. L O., 50c