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