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