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