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