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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00.. 695 Water Street, Seneca Falls, Y.iliu(', in. S ENTI AME RICAN A ttache(J sny water faucet will deyelop lip to according: s i ze pipe and W:ltB!' pre!;,�llre.. /). CO. EMEXT 23. THE EDISON CONCRETE HOUSE q How constructed. The Bible ofthe aero enthusiast, experi­ menter, builder, aviator and advertiser. Louis, Mo. trolyte because the latter constant, chemically, electrically and physically.50, cnsh with or­ d(·r. TOOL MAKERS, EXPER I· M ENTAL PAIR WO ETC. In charging, the rate can varied 3 One not too heavy-will positively not gum clog, collect dust dirt, harden dry out. water during long periods the life t>f the cell. CRAY MOTOR CO. l\Ionev b:lcl;; for allY reason. St. 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.ven any inventor furnishing with model sketch and a brief description the device question.-SIX IMPORTA� T formulas. WILLIAMS, BROWN EARLE, Ine. 625 Wash . THE TEMPLE PUMP CO.l:ulC>. Only pel'feet small motor made. A E-For Sixty Ye:m' the Standard the WOJ'ld for Quality. Ruby St.01' for Mechanics find Tradesmen. ''''ashing . Sold all garages, auto supply dealers, hardware and general stores-10c. 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..blisbed 18IiO-ALOl<: Civil Engineering and Surveying Instruments DRA WING MATERIALS SIJPPLIES B . 1492-4 in.."w York and London. The element made very com,;;act. ]6. Net price $5, cas witlt orrle-l'. The nature the support rna· terials and the method applying the active material the plates enable the cell stand dead short circuits without injury. MIC . 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. DETROIT. Garages, Repair and General Jobbing Shops find this the ideal lathe for their work. I TilE J". It will not run out and leave contact points dry., 308 Park St. vehicle manufacturer using the battery reports that charged ex· hausted battery A·4 cellR the rate of 100 amperes for short tin1('. For user:" Blue Print Paper pply Lanting Machines for making blue print paper linen."��;::;;·1J-Neatest, simplest and be,t on Ithe market. - Every User Blue Prints Should Investigate the New EXPRESS System Blue Printing Automatic, saves half the cost. The Express System Saves Money. how much it will cost, practical from archi· tecturaI and engineering standpoint ? These and other important questions relating the structure are discussed good, thorough. Order yonI' motor hom dealer from us. 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. Esb. 1). The Sebastian Lathe Co•• 120 Culvert SI. HOLTZER-CABOT GAS ENGINE JUMP SPARK and M. Our IIand-Book Patents will sent free on request. 361 roadway, New ork, or 625 Street, Washington, C. Write once for generous sample bottle and Magneto Bulletin. From 9-in.!!!_ and B K TYPES FOR MARINE AUTOMOBILE and STA· TIONARY ENGINES SEND FOR LAT EST BULLETIN 557 THE flOLTZER-CABOT ELECTRIC CO. BORBEIN AUTO CO. ]8-B. Accepted the authority. Easily lucked or released turning handle. Eight sharp cut­ tmg edges. Scale drawings of mac hine, construction details, subscribers' forum. All communications are strictly confidential. Senel )'onr water pres;;nre and silt supply pipe. DE P'T , /"'K'# TAPES AND RULES ARE THE BEST., and all newsdeal ers. Sag naw; ich A. Manufactured the The Ke)Jstone Safety Starling Handle Co. and states that pays better put over . WE LL DRILLING MACHINES Over sizes and 8tyles, for rilling either deep or shallow wells any kind soi rock. 3 One contains carbon residue, foreign matter, acid, impurities like all cylinder (mineral) oils. Lowest cost because it delivers greatest available power per horse. M Broadway, New York B ranch Office. BABBITT METALS. ���. 361 Broadway, New York WHAI ONE MAGNETO OIL ? January 4. A Free Opinion the probable patenta­ bility iTlventi�n will readily gi. With engines llorse powerR. ALOE CO. BAR . four cylinder.water pres­ sure; lbs. 3 One not too light properly lubricate and keep lubricated any bearing (ballbearing ordinary bearing)., Manufacturers, 417 West 15th SI. pipe, Ibs. pressure, in. 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. "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. J\dive Ag'ents wanted., Dept. For sale uno Co• Inc. 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. LA FAYETTE, IND. sYz single cylinder. connection. any battery any time for half the CO'lt bearing of new battery. CIENTTFTC A:\I ERTCAN Sf' PP1. Sent FREE" A., Chicago, This our 58th year. Send for our Special Offer ! ------ ------ --- fiutomobile Running Gears WITH PRESSED STEEL ANGLE IRON FRAMES Also all styles bodies. Send for catalo. regard to securing valid patent protpction for their in­ v Trade-:llarks and CopyrightM registered. YOU WILL MAKE MISTAKE YOU NOT WRITE FOR INFORMATIQN. WilliAMS BROS Ithaca. Let explain. W. 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. makes Blue Prints, Black Prints and Brown Prints.r MUNN COMPANY, Inc. 1\[0(. "FREE" Write for Catalogue. oxclusively the manufacture 2. two cylinder. Y. Improved bucket wheel construction. 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.. THE POWER CONTRACTOR'S FAVORITE ENGINE. Please mention the Scientific American when writing- advertisers through wide range, and may far hig]her than would safe with the lead battery. bottles.l1lal'. 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. Established 1872. 918 Chestnut St.., 2109 North Ninth St.. 'Publishers '1.00 SI'JIId tor 232 page catalog No. illustrated article published in Scientific meric. CO. 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. l3-in.L, Write for Free Sample Manufactured by T Y C CO. Ball­ bearing, safety starting handles for all makes cars. State your requirement\> and get our adVIse.. i\'1ounted on wheels o�· tonl ls. -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. Patents and 11 Paten secured. D WAT MOTOR . Don't scoff. in., Philadelphia, Pa. pipe., ROCKFORD, h. PRICE 11<1. engine made has wide range use. slow speed, high duty engine. swin�. with provision for circulation elec. Catalog free., 507 Olive Street, St. Ours the Oldest agency for securing patents ; it was established over sixty-five years ago. Any mechanic can opprat e them easi Send for eatalol!. (I'or sale everywhere. One boy does the work four men. , concern. Send for Lathe Catalog., 50c. . Price cents. Strong, sirupie and durable. 25c. Don't take the side shows and miss the main show i the big tent. \-Vorl{s day NigJlt-makes prints any lenvth. ('at nlog free., L'". , 4" Walnut Street, Philadelphia, Pa.• 46 "St " Foot aml ar Power Screw Cutting Au��t LathesFOR FINE, ACCURATE WORK Send for Catalogue B. L O. Try One. each ' brought in- Istantly into u,e bal joint ., 1 Legal Notices IN VENTORS are Invited communicate with Munn o. Arrane-ed for Steam or Foot Power, Velocipede or Stand-up rrreadle. Write/orcatalogue once, mentioning thispaper.cyc1e motorS.,an Supplement 685. Yearly subscription, $3. THE SEBASTIAN IS-INCH ENGINE LATHE HIGH GRADE LOW PRICE Automobile Builders. a ONE OIL COMPANY, BROADWAY, New York City. 1 for complete catalog today••teU8 all about how these high grade lilotors are built tbe largost plant the world devoted. Lowest fuel cost for runs Gasoline, Kerosene- Distillate, Gas Alcohol and has perfect ubrication., Cincinnati, Ohio Fon G NSMITHS. Send fOl Catalog I>o., Athol. Price cents mail. SENECA FALLS MFG., LEIB ST. Both free. GILSON MFG. A., Port Washington, Wis. MO�M. A. STAI-:'RETT CO. Order from your newsdealer from