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