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