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