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