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