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