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