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