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