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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cyc1e motorS.00. 695 Water Street, Seneca Falls, Y. sYz single cylinder. The Express System Saves Money. TOOL MAKERS, EXPER I· M ENTAL PAIR WO ETC. The element made very com,;;act. l\Ionev b:lcl;; for allY reason. WILLIAMS, BROWN EARLE, Ine., Chicago, This our 58th year. connection. GILSON MFG. 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. 918 Chestnut St. DETROIT. Lowest fuel cost for runs Gasoline, Kerosene- Distillate, Gas Alcohol and has perfect ubrication., Dept. Order from your newsdealer from . swin�. HOLTZER-CABOT GAS ENGINE JUMP SPARK and M. illustrated article published in Scientific meric.. STAI-:'RETT CO. a ONE OIL COMPANY, BROADWAY, New York City. MIC . BORBEIN AUTO CO. Write/orcatalogue once, mentioning thispaper.50, cnsh with or­ d(·r. ]8-B.iliu(', in. THE POWER CONTRACTOR'S FAVORITE ENGINE. 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.!!!_ and B K TYPES FOR MARINE AUTOMOBILE and STA· TIONARY ENGINES SEND FOR LAT EST BULLETIN 557 THE flOLTZER-CABOT ELECTRIC CO. Any mechanic can opprat e them easi Send for eatalol!. J\dive Ag'ents wanted. One boy does the work four men. St. Sag naw; ich A. 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.l:ulC>. Let explain. any battery any time for half the CO'lt bearing of new battery. 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 states that pays better put over . (I'or sale everywhere. THE SEBASTIAN IS-INCH ENGINE LATHE HIGH GRADE LOW PRICE Automobile Builders. water during long periods the life t>f the cell., 2109 North Ninth St. 361 Broadway, New York WHAI ONE MAGNETO OIL ? January 4. pipe. Don't scoff. slow speed, high duty engine., LEIB ST. Eight sharp cut­ tmg edges. In charging, the rate can varied 3 One not too heavy-will positively not gum clog, collect dust dirt, harden dry out. For sale uno Co• Inc.-SIX IMPORTA� T formulas.ven any inventor furnishing with model sketch and a brief description the device question. trolyte because the latter constant, chemically, electrically and physically."��;::;;·1J-Neatest, simplest and be,t on Ithe market. For user:" Blue Print Paper pply Lanting Machines for making blue print paper linen. It will not run out and leave contact points dry. bottles. Esb. 25c. Improved bucket wheel construction. -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. Price cents. A Free Opinion the probable patenta­ bility iTlventi�n will readily gi.. 1\[0(. 1492-4 in. makes Blue Prints, Black Prints and Brown Prints. Send for catalo. Send for Lathe Catalog. engine made has wide range use. Ruby St. State your requirement\> and get our adVIse. 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. Arrane-ed for Steam or Foot Power, Velocipede or Stand-up rrreadle., 507 Olive Street, St. - Every User Blue Prints Should Investigate the New EXPRESS System Blue Printing Automatic, saves half the cost. , 4" Walnut Street, Philadelphia, Pa.L, Write for Free Sample Manufactured by T Y C CO. Strong, sirupie and durable. Both free. A.00 SI'JIId tor 232 page catalog No., 1 Legal Notices IN VENTORS are Invited communicate with Munn o. Order yonI' motor hom dealer from us. BAR . pressure, in. i\'1ounted on wheels o�· tonl ls. 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. CO. Send for our Special Offer ! ------ ------ --- fiutomobile Running Gears WITH PRESSED STEEL ANGLE IRON FRAMES Also all styles bodies. Net price $5, cas witlt orrle-l'. D WAT MOTOR . Accepted the authority. /). l3-in. SENECA FALLS MFG., Cincinnati, Ohio Fon G NSMITHS. with provision for circulation elec. ���. A E-For Sixty Ye:m' the Standard the WOJ'ld for Quality. Manufactured the The Ke)Jstone Safety Starling Handle Co., Philadelphia, Pa. 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. Patents and 11 Paten secured. Our IIand-Book Patents will sent free on request. 1). Price cents mail., 308 Park St. I TilE J". \-Vorl{s day NigJlt-makes prints any lenvth. YOU WILL MAKE MISTAKE YOU NOT WRITE FOR INFORMATIQN. each ' brought in- Istantly into u,e bal joint . Senel )'onr water pres;;nre and silt supply pipe. Ours the Oldest agency for securing patents ; it was established over sixty-five years ago. Garages, Repair and General Jobbing Shops find this the ideal lathe for their work. 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. WilliAMS BROS Ithaca. oxclusively the manufacture 2. Don't take the side shows and miss the main show i the big tent.water pres­ sure; lbs. regard to securing valid patent protpction for their in­ v Trade-:llarks and CopyrightM registered. Try One... M Broadway, New York B ranch Office. WE LL DRILLING MACHINES Over sizes and 8tyles, for rilling either deep or shallow wells any kind soi rock., Port Washington, Wis. From 9-in. "FREE" Write for Catalogue.. BABBITT METALS. W. Established 1872., Manufacturers, 417 West 15th SI."w York and London. Write once for generous sample bottle and Magneto Bulletin., Athol. Y. THE EDISON CONCRETE HOUSE q How constructed. CIENTTFTC A:\I ERTCAN Sf' PP1., and all newsdeal ers. PRICE 11<1.. vehicle manufacturer using the battery reports that charged ex· hausted battery A·4 cellR the rate of 100 amperes for short tin1('. Sent FREE" A. EMEXT 23. in. Only pel'feet small motor made. A. 3 One contains carbon residue, foreign matter, acid, impurities like all cylinder (mineral) oils. 1 for complete catalog today••teU8 all about how these high grade lilotors are built tbe largost plant the world devoted. 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. THE TEMPLE PUMP CO., ROCKFORD, h. With engines llorse powerR. Scale drawings of mac hine, construction details, subscribers' forum. four cylinder.• 46 "St " Foot aml ar Power Screw Cutting Au��t LathesFOR FINE, ACCURATE WORK Send for Catalogue B. 'Publishers '1.. Sold all garages, auto supply dealers, hardware and general stores-10c. The Bible ofthe aero enthusiast, experi­ menter, builder, aviator and advertiser. Easily lucked or released turning handle. two cylinder. 361 roadway, New ork, or 625 Street, Washington, C.l1lal'.r MUNN COMPANY, Inc.blisbed 18IiO-ALOl<: Civil Engineering and Surveying Instruments DRA WING MATERIALS SIJPPLIES B . Send fOl Catalog I>o.01' for Mechanics find Tradesmen. Please mention the Scientific American when writing- advertisers through wide range, and may far hig]her than would safe with the lead battery. Louis, Mo. how much it will cost, practical from archi· tecturaI and engineering standpoint ? These and other important questions relating the structure are discussed good, thorough. Ball­ bearing, safety starting handles for all makes cars. ('at nlog free.,an Supplement 685. LA FAYETTE, IND. CRAY MOTOR CO. 3 One not too light properly lubricate and keep lubricated any bearing (ballbearing ordinary bearing). MO�M. Catalog free. L O. . 625 Wash . 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. "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. pipe, Ibs. , concern. All communications are strictly confidential. ]6. Louis, Mo. Yearly subscription, $3. ''''ashing .. ALOE CO. DE P'T , /"'K'# TAPES AND RULES ARE THE BEST., 50c. Lowest cost because it delivers greatest available power per horse. BIotor for grmding, polishing, fans, sewing mtwhines for Doctors, Dl'ntists, Urn;!' �:)��:Il��l�d;�lfe!�$e;:'����f9���ei�� i �:�· tor and pulle:v 'olll)� $2. The nature the support rna· terials and the method applying the active material the plates enable the cell stand dead short circuits without injury., L'". The Sebastian Lathe Co•• 120 Culvert SI