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