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