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