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