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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All communications are strictly confidential. LA FAYETTE, IND. W. THE SEBASTIAN IS-INCH ENGINE LATHE HIGH GRADE LOW PRICE Automobile Builders. Manufactured the The Ke)Jstone Safety Starling Handle Co.00 SI'JIId tor 232 page catalog No... Patents and 11 Paten secured. 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. St. BAR . ]6. 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. With engines llorse powerR. , 4" Walnut Street, Philadelphia, Pa. Lowest cost because it delivers greatest available power per horse. ALOE CO., 507 Olive Street, St. any battery any time for half the CO'lt bearing of new battery. makes Blue Prints, Black Prints and Brown Prints. Try One. Sent FREE" A. Send for catalo. connection. 625 Wash . Order yonI' motor hom dealer from us. Louis, Mo. 'Publishers '1.L, Write for Free Sample Manufactured by T Y C CO. i\'1ounted on wheels o�· tonl ls.l:ulC>. STAI-:'RETT CO., and all newsdeal ers. YOU WILL MAKE MISTAKE YOU NOT WRITE FOR INFORMATIQN.. Esb. l\Ionev b:lcl;; for allY reason. Easily lucked or released turning handle. 1 for complete catalog today••teU8 all about how these high grade lilotors are built tbe largost plant the world devoted.01' for Mechanics find Tradesmen. Our IIand-Book Patents will sent free on request. 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. D WAT MOTOR . The Express System Saves Money. THE POWER CONTRACTOR'S FAVORITE ENGINE. A Free Opinion the probable patenta­ bility iTlventi�n will readily gi. 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. Ball­ bearing, safety starting handles for all makes cars. BORBEIN AUTO CO. GILSON MFG.l1lal'. Arrane-ed for Steam or Foot Power, Velocipede or Stand-up rrreadle. engine made has wide range use. Eight sharp cut­ tmg edges. Y., 1 Legal Notices IN VENTORS are Invited communicate with Munn o. L O., Chicago, This our 58th year. trolyte because the latter constant, chemically, electrically and physically., 308 Park St. Price cents mail. Ours the Oldest agency for securing patents ; it was established over sixty-five years ago. pipe, Ibs. and states that pays better put over . - Every User Blue Prints Should Investigate the New EXPRESS System Blue Printing Automatic, saves half the cost. In charging, the rate can varied 3 One not too heavy-will positively not gum clog, collect dust dirt, harden dry out."��;::;;·1J-Neatest, simplest and be,t on Ithe market. ('at nlog free. THE TEMPLE PUMP CO. CIENTTFTC A:\I ERTCAN Sf' PP1. 1). /). ''''ashing .. BABBITT METALS. CO. slow speed, high duty engine. WilliAMS BROS Ithaca. State your requirement\> and get our adVIse. 1\[0(. swin�. Established 1872. From 9-in. Send for our Special Offer ! ------ ------ --- fiutomobile Running Gears WITH PRESSED STEEL ANGLE IRON FRAMES Also all styles bodies. .!!!_ and B K TYPES FOR MARINE AUTOMOBILE and STA· TIONARY ENGINES SEND FOR LAT EST BULLETIN 557 THE flOLTZER-CABOT ELECTRIC CO. in. The Bible ofthe aero enthusiast, experi­ menter, builder, aviator and advertiser. 1492-4 in. Scale drawings of mac hine, construction details, subscribers' forum. 918 Chestnut St.water pres­ sure; lbs. Only pel'feet small motor made. CRAY MOTOR CO.-SIX IMPORTA� T formulas. WILLIAMS, BROWN EARLE, Ine. 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 during long periods the life t>f the cell. l3-in.. Sold all garages, auto supply dealers, hardware and general stores-10c. ���. illustrated article published in Scientific meric. Strong, sirupie and durable. M Broadway, New York B ranch Office. The nature the support rna· terials and the method applying the active material the plates enable the cell stand dead short circuits without injury., Philadelphia, Pa. Yearly subscription, $3. 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., Cincinnati, Ohio Fon G NSMITHS. Both free. Price cents. 3 One contains carbon residue, foreign matter, acid, impurities like all cylinder (mineral) oils. 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. four cylinder. bottles., ROCKFORD, h. 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. HOLTZER-CABOT GAS ENGINE JUMP SPARK and M., Dept. 361 Broadway, New York WHAI ONE MAGNETO OIL ? January 4. CO.• 46 "St " Foot aml ar Power Screw Cutting Au��t LathesFOR FINE, ACCURATE WORK Send for Catalogue B. Net price $5, cas witlt orrle-l'. "Boosting charges"-given a vehicle battery when partially dis· charged, carry through a longer _period than its prescribed day's work-may given for hour's run at a rate two three times the normal charging rate and regular charge may be completed hurry starting at a high rate and gradually dpcreasing the rate. Write/orcatalogue once, mentioning thispaper. On account the low voltage the cell, a vehicle battery given voltage must contain larger number cells than a lead battery, twenty-fonr lead cells being equivalent forty the nickel-iron cells of same ampere-hour capacity but the low voltage and comparatively high in· ternal resistance are disadvantageo1ls from the purely electrical rather than the vehicle point view..r MUNN COMPANY, Inc., LEIB ST. with provision for circulation elec."w York and London. MIC . pressure, in. Don't scoff. 361 roadway, New ork, or 625 Street, Washington, C. THE EDISON CONCRETE HOUSE q How constructed. (I'or sale everywhere. DETROIT. pipe. oxclusively the manufacture 2.. S ENTI AME RICAN A ttache(J sny water faucet will deyelop lip to according: s i ze pipe and W:ltB!' pre!;,�llre. Don't take the side shows and miss the main show i the big tent. WE LL DRILLING MACHINES Over sizes and 8tyles, for rilling either deep or shallow wells any kind soi rock.ven any inventor furnishing with model sketch and a brief description the device question. SENECA FALLS MFG. For user:" Blue Print Paper pply Lanting Machines for making blue print paper linen. 25c. BIotor for grmding, polishing, fans, sewing mtwhines for Doctors, Dl'ntists, Urn;!' �:)��:Il��l�d;�lfe!�$e;:'����f9���ei�� i �:�· tor and pulle:v 'olll)� $2., Athol. sYz single cylinder.00. Lowest fuel cost for runs Gasoline, Kerosene- Distillate, Gas Alcohol and has perfect ubrication. J\dive Ag'ents wanted. TOOL MAKERS, EXPER I· M ENTAL PAIR WO ETC. The element made very com,;;act. ]8-B. , concern. 3 One not too light properly lubricate and keep lubricated any bearing (ballbearing ordinary bearing).,an Supplement 685. Any mechanic can opprat e them easi Send for eatalol!. Ruby St. The Sebastian Lathe Co•• 120 Culvert SI.blisbed 18IiO-ALOl<: Civil Engineering and Surveying Instruments DRA WING MATERIALS SIJPPLIES B . "FREE" Write for Catalogue., L'". how much it will cost, practical from archi· tecturaI and engineering standpoint ? These and other important questions relating the structure are discussed good, thorough. vehicle manufacturer using the battery reports that charged ex· hausted battery A·4 cellR the rate of 100 amperes for short tin1('. Catalog free. A E-For Sixty Ye:m' the Standard the WOJ'ld for Quality. Garages, Repair and General Jobbing Shops find this the ideal lathe for their work. Louis, Mo. 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. Send for Lathe Catalog. DE P'T , /"'K'# TAPES AND RULES ARE THE BEST. Write once for generous sample bottle and Magneto Bulletin. Senel )'onr water pres;;nre and silt supply pipe., 2109 North Ninth St. Let explain. \-Vorl{s day NigJlt-makes prints any lenvth. A. EMEXT 23. It will not run out and leave contact points dry. Accepted the authority., Manufacturers, 417 West 15th SI. 695 Water Street, Seneca Falls, Y.iliu(', in. MO�M. Sag naw; ich A. two cylinder., Port Washington, Wis. Improved bucket wheel construction. For sale uno Co• Inc. A.cyc1e motorS.50, cnsh with or­ d(·r. I TilE J". One boy does the work four men. -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. each ' brought in- Istantly into u,e bal joint .. Send fOl Catalog I>o., 50c. a ONE OIL COMPANY, BROADWAY, New York City. Order from your newsdealer from . PRICE 11<1