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