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