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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. 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.. ('at nlog free. Esb. MO�M. Manufactured the The Ke)Jstone Safety Starling Handle Co., 2109 North Ninth St., 1 Legal Notices IN VENTORS are Invited communicate with Munn o. THE EDISON CONCRETE HOUSE q How constructed. ''''ashing . Both free., and all newsdeal ers. CIENTTFTC A:\I ERTCAN Sf' PP1. , concern. LA FAYETTE, IND. Order from your newsdealer from ..r MUNN COMPANY, Inc. Lowest fuel cost for runs Gasoline, Kerosene- Distillate, Gas Alcohol and has perfect ubrication. Don't scoff. CRAY MOTOR CO. slow speed, high duty engine. D WAT MOTOR . Send for catalo. Scale drawings of mac hine, construction details, subscribers' forum. DETROIT. DE P'T , /"'K'# TAPES AND RULES ARE THE BEST. each ' brought in- Istantly into u,e bal joint . Don't take the side shows and miss the main show i the big tent. BAR . pressure, in. 3 One not too light properly lubricate and keep lubricated any bearing (ballbearing ordinary bearing)., ROCKFORD, h. A Free Opinion the probable patenta­ bility iTlventi�n will readily gi. Please mention the Scientific American when writing- advertisers through wide range, and may far hig]her than would safe with the lead battery.. 25c. with provision for circulation elec., Cincinnati, Ohio Fon G NSMITHS., L'". In charging, the rate can varied 3 One not too heavy-will positively not gum clog, collect dust dirt, harden dry out. Easily lucked or released turning handle. Any mechanic can opprat e them easi Send for eatalol!. oxclusively the manufacture 2. 1492-4 in. Patents and 11 Paten secured.ven any inventor furnishing with model sketch and a brief description the device question. in. From 9-in."w York and London.50, cnsh with or­ d(·r. GILSON MFG. Sold all garages, auto supply dealers, hardware and general stores-10c. ���.blisbed 18IiO-ALOl<: Civil Engineering and Surveying Instruments DRA WING MATERIALS SIJPPLIES B .water pres­ sure; lbs. Try One. sYz single cylinder. Order yonI' motor hom dealer from us. S ENTI AME RICAN A ttache(J sny water faucet will deyelop lip to according: s i ze pipe and W:ltB!' pre!;,�llre.• 46 "St " Foot aml ar Power Screw Cutting Au��t LathesFOR FINE, ACCURATE WORK Send for Catalogue B. Price cents. Arrane-ed for Steam or Foot Power, Velocipede or Stand-up rrreadle. Accepted the authority. a ONE OIL COMPANY, BROADWAY, New York City. L O.iliu(', in. Net price $5, cas witlt orrle-l'. Let explain. TOOL MAKERS, EXPER I· M ENTAL PAIR WO ETC. Write once for generous sample bottle and Magneto Bulletin. connection.!!!_ and B K TYPES FOR MARINE AUTOMOBILE and STA· TIONARY ENGINES SEND FOR LAT EST BULLETIN 557 THE flOLTZER-CABOT ELECTRIC CO. STAI-:'RETT CO. "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. 695 Water Street, Seneca Falls, Y. any battery any time for half the CO'lt bearing of new battery. Send fOl Catalog I>o. 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. , 4" Walnut Street, Philadelphia, Pa., Manufacturers, 417 West 15th SI. The Sebastian Lathe Co•• 120 Culvert SI. swin�. makes Blue Prints, Black Prints and Brown Prints. (I'or sale everywhere. regard to securing valid patent protpction for their in­ v Trade-:llarks and CopyrightM registered., LEIB ST. Write/orcatalogue once, mentioning thispaper. Y. Garages, Repair and General Jobbing Shops find this the ideal lathe for their work."��;::;;·1J-Neatest, simplest and be,t on Ithe market. THE SEBASTIAN IS-INCH ENGINE LATHE HIGH GRADE LOW PRICE Automobile Builders. Strong, sirupie and durable. Ours the Oldest agency for securing patents ; it was established over sixty-five years ago. WE LL DRILLING MACHINES Over sizes and 8tyles, for rilling either deep or shallow wells any kind soi rock. BORBEIN AUTO CO., Athol. 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. Sag naw; ich A. M Broadway, New York B ranch Office. -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. MIC . EMEXT 23.00. Our IIand-Book Patents will sent free on request. Established 1872. Louis, Mo., Chicago, This our 58th year. \-Vorl{s day NigJlt-makes prints any lenvth.. how much it will cost, practical from archi· tecturaI and engineering standpoint ? These and other important questions relating the structure are discussed good, thorough., Dept. pipe, Ibs. WILLIAMS, BROWN EARLE, Ine. With engines llorse powerR. BABBITT METALS. SENECA FALLS MFG. ]8-B. For user:" Blue Print Paper pply Lanting Machines for making blue print paper linen.,an Supplement 685. HOLTZER-CABOT GAS ENGINE JUMP SPARK and M. The element made very com,;;act. I TilE J". It will not run out and leave contact points dry. PRICE 11<1. Sent FREE" A. 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Ball­ bearing, safety starting handles for all makes cars. vehicle manufacturer using the battery reports that charged ex· hausted battery A·4 cellR the rate of 100 amperes for short tin1('. 361 Broadway, New York WHAI ONE MAGNETO OIL ? January 4. 1\[0(. State your requirement\> and get our adVIse., 507 Olive Street, St. Eight sharp cut­ tmg edges. WilliAMS BROS Ithaca. 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. 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 Express System Saves Money. CO. Send for Lathe Catalog. One boy does the work four men. Only pel'feet small motor made. Lowest cost because it delivers greatest available power per horse. CO. Yearly subscription, $3. St. 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. THE POWER CONTRACTOR'S FAVORITE ENGINE. 1).-SIX IMPORTA� T formulas.L, Write for Free Sample Manufactured by T Y C CO.cyc1e motorS., 50c. Improved bucket wheel construction. The nature the support rna· terials and the method applying the active material the plates enable the cell stand dead short circuits without injury. i\'1ounted on wheels o�· tonl ls. 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. bottles. The Bible ofthe aero enthusiast, experi­ menter, builder, aviator and advertiser., Port Washington, Wis. l\Ionev b:lcl;; for allY reason. Louis, Mo. - Every User Blue Prints Should Investigate the New EXPRESS System Blue Printing Automatic, saves half the cost. Send for our Special Offer ! ------ ------ --- fiutomobile Running Gears WITH PRESSED STEEL ANGLE IRON FRAMES Also all styles bodies. . A E-For Sixty Ye:m' the Standard the WOJ'ld for Quality. ALOE CO. illustrated article published in Scientific meric. "FREE" Write for Catalogue. two cylinder., Philadelphia, Pa. Senel )'onr water pres;;nre and silt supply pipe. YOU WILL MAKE MISTAKE YOU NOT WRITE FOR INFORMATIQN. 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. 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. Catalog free. J\dive Ag'ents wanted.l1lal'