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