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