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