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