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