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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St. a ONE OIL COMPANY, BROADWAY, New York City. Esb. TOOL MAKERS, EXPER I· M ENTAL PAIR WO ETC. four cylinder. 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. Easily lucked or released turning handle. 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. each ' brought in- Istantly into u,e bal joint .. Only pel'feet small motor made. with provision for circulation elec.L, Write for Free Sample Manufactured by T Y C CO. Don't scoff. Ours the Oldest agency for securing patents ; it was established over sixty-five years ago. THE POWER CONTRACTOR'S FAVORITE ENGINE., Manufacturers, 417 West 15th SI.l:ulC>. Order from your newsdealer from . Send for catalo. Sag naw; ich A. S ENTI AME RICAN A ttache(J sny water faucet will deyelop lip to according: s i ze pipe and W:ltB!' pre!;,�llre., 1 Legal Notices IN VENTORS are Invited communicate with Munn o. WILLIAMS, BROWN EARLE, Ine.. Manufactured the The Ke)Jstone Safety Starling Handle Co."��;::;;·1J-Neatest, simplest and be,t on Ithe market. YOU WILL MAKE MISTAKE YOU NOT WRITE FOR INFORMATIQN., L'". 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. 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. ]6.00 SI'JIId tor 232 page catalog No. engine made has wide range use. "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. /). M Broadway, New York B ranch Office. THE SEBASTIAN IS-INCH ENGINE LATHE HIGH GRADE LOW PRICE Automobile Builders.-SIX IMPORTA� T formulas.., Chicago, This our 58th year., Athol. A. Price cents mail. The Bible ofthe aero enthusiast, experi­ menter, builder, aviator and advertiser.r MUNN COMPANY, Inc. 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. HOLTZER-CABOT GAS ENGINE JUMP SPARK and M., Philadelphia, Pa. Price cents. For user:" Blue Print Paper pply Lanting Machines for making blue print paper linen. oxclusively the manufacture 2. Our IIand-Book Patents will sent free on request. bottles. Catalog free. CO. 'Publishers '1.cyc1e motorS. i\'1ounted on wheels o�· tonl ls. Patents and 11 Paten secured."w York and London. Ball­ bearing, safety starting handles for all makes cars. in. -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. WilliAMS BROS Ithaca. 361 roadway, New ork, or 625 Street, Washington, C. It will not run out and leave contact points dry. Send fOl Catalog I>o.blisbed 18IiO-ALOl<: Civil Engineering and Surveying Instruments DRA WING MATERIALS SIJPPLIES B . Lowest cost because it delivers greatest available power per horse. connection., Dept. Louis, Mo. BAR .iliu(', in. Send for Lathe Catalog. pipe, Ibs. Try One... Accepted the authority. J\dive Ag'ents wanted. 1).water pres­ sure; lbs. 1492-4 in. Sent FREE" A. 695 Water Street, Seneca Falls, Y. All communications are strictly confidential. sYz single cylinder. 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. Net price $5, cas witlt orrle-l'. any battery any time for half the CO'lt bearing of new battery. swin�. 1\[0(. The Express System Saves Money. L O. makes Blue Prints, Black Prints and Brown Prints. pressure, in. The element made very com,;;act. CRAY MOTOR CO., LEIB ST. A Free Opinion the probable patenta­ bility iTlventi�n will readily gi. Both free.01' for Mechanics find Tradesmen. 3 One contains carbon residue, foreign matter, acid, impurities like all cylinder (mineral) oils. "FREE" Write for Catalogue. CO. Sold all garages, auto supply dealers, hardware and general stores-10c. water during long periods the life t>f the cell. Strong, sirupie and durable.ven any inventor furnishing with model sketch and a brief description the device question. vehicle manufacturer using the battery reports that charged ex· hausted battery A·4 cellR the rate of 100 amperes for short tin1('., 2109 North Ninth St. GILSON MFG. Order yonI' motor hom dealer from us. 25c. Garages, Repair and General Jobbing Shops find this the ideal lathe for their work. THE EDISON CONCRETE HOUSE q How constructed. BABBITT METALS., Cincinnati, Ohio Fon G NSMITHS., Port Washington, Wis. 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. Y. ''''ashing . 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. The Sebastian Lathe Co•• 120 Culvert SI.00. D WAT MOTOR . , concern. PRICE 11<1., 308 Park St. ���. The nature the support rna· terials and the method applying the active material the plates enable the cell stand dead short circuits without injury.. DETROIT. Arrane-ed for Steam or Foot Power, Velocipede or Stand-up rrreadle. 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. With engines llorse powerR. STAI-:'RETT CO. From 9-in.• 46 "St " Foot aml ar Power Screw Cutting Au��t LathesFOR FINE, ACCURATE WORK Send for Catalogue B. ]8-B. One boy does the work four men.l1lal'. Lowest fuel cost for runs Gasoline, Kerosene- Distillate, Gas Alcohol and has perfect ubrication. Ruby St. Send for our Special Offer ! ------ ------ --- fiutomobile Running Gears WITH PRESSED STEEL ANGLE IRON FRAMES Also all styles bodies. slow speed, high duty engine. 361 Broadway, New York WHAI ONE MAGNETO OIL ? January 4. A. l\Ionev b:lcl;; for allY reason. . MIC . and states that pays better put over . two cylinder. 625 Wash . \-Vorl{s day NigJlt-makes prints any lenvth. ALOE CO. Write once for generous sample bottle and Magneto Bulletin. pipe. 1 for complete catalog today••teU8 all about how these high grade lilotors are built tbe largost plant the world devoted. trolyte because the latter constant, chemically, electrically and physically. - Every User Blue Prints Should Investigate the New EXPRESS System Blue Printing Automatic, saves half the cost., ROCKFORD, h.50, cnsh with or­ d(·r.. MO�M. Established 1872. For sale uno Co• Inc. I TilE J". Scale drawings of mac hine, construction details, subscribers' forum. Any mechanic can opprat e them easi Send for eatalol!. (I'or sale everywhere. how much it will cost, practical from archi· tecturaI and engineering standpoint ? These and other important questions relating the structure are discussed good, thorough. Write/orcatalogue once, mentioning thispaper., 50c. EMEXT 23. 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. Please mention the Scientific American when writing- advertisers through wide range, and may far hig]her than would safe with the lead battery. W. l3-in. Let explain. Yearly subscription, $3. ('at nlog free. Don't take the side shows and miss the main show i the big tent. A E-For Sixty Ye:m' the Standard the WOJ'ld for Quality. WE LL DRILLING MACHINES Over sizes and 8tyles, for rilling either deep or shallow wells any kind soi rock. 918 Chestnut St.!!!_ and B K TYPES FOR MARINE AUTOMOBILE and STA· TIONARY ENGINES SEND FOR LAT EST BULLETIN 557 THE flOLTZER-CABOT ELECTRIC CO.,an Supplement 685. , 4" Walnut Street, Philadelphia, Pa. LA FAYETTE, IND. 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.. Improved bucket wheel construction., 507 Olive Street, St. DE P'T , /"'K'# TAPES AND RULES ARE THE BEST. BORBEIN AUTO CO. SENECA FALLS MFG. CIENTTFTC A:\I ERTCAN Sf' PP1. regard to securing valid patent protpction for their in­ v Trade-:llarks and CopyrightM registered. illustrated article published in Scientific meric. Eight sharp cut­ tmg edges. Louis, Mo. 3 One not too light properly lubricate and keep lubricated any bearing (ballbearing ordinary bearing). Senel )'onr water pres;;nre and silt supply pipe. THE TEMPLE PUMP CO