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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, LEIB ST. The element made very com,;;act. Only pel'feet small motor made. how much it will cost, practical from archi· tecturaI and engineering standpoint ? These and other important questions relating the structure are discussed good, thorough. WILLIAMS, BROWN EARLE, Ine. with provision for circulation elec. THE TEMPLE PUMP CO. Send for Lathe Catalog. 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. CO. State your requirement\> and get our adVIse. 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., and all newsdeal ers. Garages, Repair and General Jobbing Shops find this the ideal lathe for their work. 1 for complete catalog today••teU8 all about how these high grade lilotors are built tbe largost plant the world devoted. four cylinder., Chicago, This our 58th year.50, cnsh with or­ d(·r..blisbed 18IiO-ALOl<: Civil Engineering and Surveying Instruments DRA WING MATERIALS SIJPPLIES B . The Sebastian Lathe Co•• 120 Culvert SI. swin�. l\Ionev b:lcl;; for allY reason. trolyte because the latter constant, chemically, electrically and physically. For sale uno Co• Inc. WE LL DRILLING MACHINES Over sizes and 8tyles, for rilling either deep or shallow wells any kind soi rock. water during long periods the life t>f the cell. Louis, Mo. Send for catalo. . Any mechanic can opprat e them easi Send for eatalol!. Accepted the authority.ven any inventor furnishing with model sketch and a brief description the device question. 695 Water Street, Seneca Falls, Y. ���. /). in. A., Athol. 361 Broadway, New York WHAI ONE MAGNETO OIL ? January 4., Philadelphia, Pa. Order yonI' motor hom dealer from us. - Every User Blue Prints Should Investigate the New EXPRESS System Blue Printing Automatic, saves half the cost. Send for our Special Offer ! ------ ------ --- fiutomobile Running Gears WITH PRESSED STEEL ANGLE IRON FRAMES Also all styles bodies. DETROIT. EMEXT 23. connection. 3 One not too light properly lubricate and keep lubricated any bearing (ballbearing ordinary bearing). BAR . 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. regard to securing valid patent protpction for their in­ v Trade-:llarks and CopyrightM registered... A. Strong, sirupie and durable.00 SI'JIId tor 232 page catalog No.r MUNN COMPANY, Inc.. 'Publishers '1. pipe, Ibs. 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. CRAY MOTOR CO. Senel )'onr water pres;;nre and silt supply pipe.!!!_ and B K TYPES FOR MARINE AUTOMOBILE and STA· TIONARY ENGINES SEND FOR LAT EST BULLETIN 557 THE flOLTZER-CABOT ELECTRIC CO.water pres­ sure; lbs. MIC ., 308 Park St. M Broadway, New York B ranch Office. HOLTZER-CABOT GAS ENGINE JUMP SPARK and M. , concern. STAI-:'RETT CO. Catalog free. All communications are strictly confidential. ('at nlog free. Both free. PRICE 11<1. Our IIand-Book Patents will sent free on request. CO. Try One. BABBITT METALS. Sent FREE" A. l3-in.l1lal'. Ball­ bearing, safety starting handles for all makes cars. GILSON MFG. THE SEBASTIAN IS-INCH ENGINE LATHE HIGH GRADE LOW PRICE Automobile Builders. 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. any battery any time for half the CO'lt bearing of new battery. A E-For Sixty Ye:m' the Standard the WOJ'ld for Quality. In charging, the rate can varied 3 One not too heavy-will positively not gum clog, collect dust dirt, harden dry out. 361 roadway, New ork, or 625 Street, Washington, C.. 1492-4 in. Lowest cost because it delivers greatest available power per horse. From 9-in. Price cents mail., 2109 North Ninth St. Scale drawings of mac hine, construction details, subscribers' forum. Y. bottles., Manufacturers, 417 West 15th SI. Yearly subscription, $3. W. It will not run out and leave contact points dry., Dept. , 4" Walnut Street, Philadelphia, Pa. St. 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., 1 Legal Notices IN VENTORS are Invited communicate with Munn o., L'". Please mention the Scientific American when writing- advertisers through wide range, and may far hig]her than would safe with the lead battery. Write once for generous sample bottle and Magneto Bulletin. Let explain. "FREE" Write for Catalogue. oxclusively the manufacture 2. Louis, Mo. Improved bucket wheel construction. 1\[0(. two cylinder. Arrane-ed for Steam or Foot Power, Velocipede or Stand-up rrreadle. BORBEIN AUTO CO. Easily lucked or released turning handle. Patents and 11 Paten secured.cyc1e motorS. Eight sharp cut­ tmg edges. The Express System Saves Money. a ONE OIL COMPANY, BROADWAY, New York City. One boy does the work four men.• 46 "St " Foot aml ar Power Screw Cutting Au��t LathesFOR FINE, ACCURATE WORK Send for Catalogue B. ALOE CO.iliu(', in. The Bible ofthe aero enthusiast, experi­ menter, builder, aviator and advertiser. WilliAMS BROS Ithaca.l:ulC>. Order from your newsdealer from . 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. sYz single cylinder. i\'1ounted on wheels o�· tonl ls. THE EDISON CONCRETE HOUSE q How constructed., Cincinnati, Ohio Fon G NSMITHS. Write/orcatalogue once, mentioning thispaper. 1). TOOL MAKERS, EXPER I· M ENTAL PAIR WO ETC. each ' brought in- Istantly into u,e bal joint . I TilE J"..01' for Mechanics find Tradesmen. 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. 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.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. 625 Wash . (I'or sale everywhere., Port Washington, Wis. D WAT MOTOR . 918 Chestnut St. 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. MO�M. Ruby St. Don't scoff. THE POWER CONTRACTOR'S FAVORITE ENGINE. For user:" Blue Print Paper pply Lanting Machines for making blue print paper linen. pressure, in. L O. 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. YOU WILL MAKE MISTAKE YOU NOT WRITE FOR INFORMATIQN.. Send fOl Catalog I>o. ]6., 507 Olive Street, St. Sold all garages, auto supply dealers, hardware and general stores-10c. Don't take the side shows and miss the main show i the big tent. slow speed, high duty engine. Net price $5, cas witlt orrle-l'. A Free Opinion the probable patenta­ bility iTlventi�n will readily gi. ''''ashing .,an Supplement 685. DE P'T , /"'K'# TAPES AND RULES ARE THE BEST. Established 1872."��;::;;·1J-Neatest, simplest and be,t on Ithe market. CIENTTFTC A:\I ERTCAN Sf' PP1. engine made has wide range use. Esb. \-Vorl{s day NigJlt-makes prints any lenvth. "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. SENECA FALLS MFG. Lowest fuel cost for runs Gasoline, Kerosene- Distillate, Gas Alcohol and has perfect ubrication. Price cents."w York and London., 50c. With engines llorse powerR.. 25c. pipe. illustrated article published in Scientific meric. and states that pays better put over .-SIX IMPORTA� T formulas. 3 One contains carbon residue, foreign matter, acid, impurities like all cylinder (mineral) oils., ROCKFORD, h. Ours the Oldest agency for securing patents ; it was established over sixty-five years ago. S ENTI AME RICAN A ttache(J sny water faucet will deyelop lip to according: s i ze pipe and W:ltB!' pre!;,�llre. -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.L, Write for Free Sample Manufactured by T Y C CO. ]8-B. Manufactured the The Ke)Jstone Safety Starling Handle Co. makes Blue Prints, Black Prints and Brown Prints. Sag naw; ich A. J\dive Ag'ents wanted