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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trolyte because the latter constant, chemically, electrically and physically. Accepted the authority. 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. Manufactured the The Ke)Jstone Safety Starling Handle Co. Senel )'onr water pres;;nre and silt supply pipe., Chicago, This our 58th year. 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. Scale drawings of mac hine, construction details, subscribers' forum. WILLIAMS, BROWN EARLE, Ine.r MUNN COMPANY, Inc. CRAY MOTOR CO. The Express System Saves Money.iliu(', in. a ONE OIL COMPANY, BROADWAY, New York City., LEIB ST. Sent FREE" A. PRICE 11<1. BAR . THE SEBASTIAN IS-INCH ENGINE LATHE HIGH GRADE LOW PRICE Automobile Builders. The Bible ofthe aero enthusiast, experi­ menter, builder, aviator and advertiser. EMEXT 23. i\'1ounted on wheels o�· tonl ls. water during long periods the life t>f the cell. Yearly subscription, $3. pipe, Ibs. Arrane-ed for Steam or Foot Power, Velocipede or Stand-up rrreadle. 1492-4 in.00 SI'JIId tor 232 page catalog No. illustrated article published in Scientific meric. 361 roadway, New ork, or 625 Street, Washington, C.blisbed 18IiO-ALOl<: Civil Engineering and Surveying Instruments DRA WING MATERIALS SIJPPLIES B . Try One. engine made has wide range use.01' for Mechanics find Tradesmen. 'Publishers '1., Athol.cyc1e motorS. Send for Lathe Catalog. ]6. how much it will cost, practical from archi· tecturaI and engineering standpoint ? These and other important questions relating the structure are discussed good, thorough. CIENTTFTC A:\I ERTCAN Sf' PP1. /). 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. WilliAMS BROS Ithaca. 1\[0(. oxclusively the manufacture 2., ROCKFORD, h. YOU WILL MAKE MISTAKE YOU NOT WRITE FOR INFORMATIQN. Send for our Special Offer ! ------ ------ --- fiutomobile Running Gears WITH PRESSED STEEL ANGLE IRON FRAMES Also all styles bodies. DE P'T , /"'K'# TAPES AND RULES ARE THE BEST. Patents and 11 Paten secured. ('at nlog free. any battery any time for half the CO'lt bearing of new battery.. swin�. THE TEMPLE PUMP 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. connection., 507 Olive Street, St. With engines llorse powerR. 3 One not too light properly lubricate and keep lubricated any bearing (ballbearing ordinary bearing)., 2109 North Ninth St. Our IIand-Book Patents will sent free on request. S ENTI AME RICAN A ttache(J sny water faucet will deyelop lip to according: s i ze pipe and W:ltB!' pre!;,�llre. l\Ionev b:lcl;; for allY reason. STAI-:'RETT CO. A E-For Sixty Ye:m' the Standard the WOJ'ld for Quality. It will not run out and leave contact points dry. LA FAYETTE, IND. vehicle manufacturer using the battery reports that charged ex· hausted battery A·4 cellR the rate of 100 amperes for short tin1('., and all newsdeal ers. 918 Chestnut St. \-Vorl{s day NigJlt-makes prints any lenvth. Easily lucked or released turning handle. 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. pipe. Lowest cost because it delivers greatest available power per horse. THE POWER CONTRACTOR'S FAVORITE ENGINE. "FREE" Write for Catalogue. Both free. State your requirement\> and get our adVIse. four cylinder. 1)., Manufacturers, 417 West 15th SI., Cincinnati, Ohio Fon G NSMITHS. Strong, sirupie and durable. TOOL MAKERS, EXPER I· M ENTAL PAIR WO ETC. 1 for complete catalog today••teU8 all about how these high grade lilotors are built tbe largost plant the world devoted. , 4" Walnut Street, Philadelphia, Pa. Write once for generous sample bottle and Magneto Bulletin. slow speed, high duty engine. In charging, the rate can varied 3 One not too heavy-will positively not gum clog, collect dust dirt, harden dry out. Please mention the Scientific American when writing- advertisers through wide range, and may far hig]her than would safe with the lead battery. The element made very com,;;act. in. I TilE J". "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. MIC . DETROIT. A Free Opinion the probable patenta­ bility iTlventi�n will readily gi. two cylinder. (I'or sale everywhere. One boy does the work four men. Esb., Port Washington, Wis.. For sale uno Co• Inc. Louis, Mo. with provision for circulation elec. . Net price $5, cas witlt orrle-l'. The cost of charging current, and hence also the ef· ficiency its recovery the discharge circuit, minor part the total ex· pense operating the vehicle and the low electrical efficiency the battery s offset its extremely light weight­ which 'not only lightens the construction of the vehicle, but increases the propor· tion "paying load" carried the same -and its ruggedness service. Write/orcatalogue once, mentioning thispaper. Garages, Repair and General Jobbing Shops find this the ideal lathe for their work.50, cnsh with or­ d(·r., Philadelphia, Pa.ven any inventor furnishing with model sketch and a brief description the device question. Louis, Mo. 361 Broadway, New York WHAI ONE MAGNETO OIL ? January 4. -Whereas the lead cell the constitu­ tion (proportions acid and water) con· ductivity and specific gravity all undergo definite changJe during the cycle of charge and discharge, the Edison cell these ql,lalities remain unaltered. Sag naw; ich A. 25c. HOLTZER-CABOT GAS ENGINE JUMP SPARK and M., Dept.. 3 One contains carbon residue, foreign matter, acid, impurities like all cylinder (mineral) oils. CO.water pres­ sure; lbs. SENECA FALLS MFG. A. Established 1872. All communications are strictly confidential. ''''ashing .l1lal'. In estimating the true commercial efficiency of road-vehicle transportation, the ton· miles obtained must compared with the total cost operation the vehi- cle, with due allowance for all-around reo liability. BIotor for grmding, polishing, fans, sewing mtwhines for Doctors, Dl'ntists, Urn;!' �:)��:Il��l�d;�lfe!�$e;:'����f9���ei�� i �:�· tor and pulle:v 'olll)� $2. pressure, in.. A. - Every User Blue Prints Should Investigate the New EXPRESS System Blue Printing Automatic, saves half the cost. M Broadway, New York B ranch Office. 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., L'". 695 Water Street, Seneca Falls, Y. St. Send fOl Catalog I>o., 308 Park St. 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. ALOE CO. regard to securing valid patent protpction for their in­ v Trade-:llarks and CopyrightM registered. J\dive Ag'ents wanted. L O. Order from your newsdealer from . WE LL DRILLING MACHINES Over sizes and 8tyles, for rilling either deep or shallow wells any kind soi rock. Let explain.!!!_ and B K TYPES FOR MARINE AUTOMOBILE and STA· TIONARY ENGINES SEND FOR LAT EST BULLETIN 557 THE flOLTZER-CABOT ELECTRIC CO.l:ulC>. Catalog free. Send for catalo. BABBITT METALS.. 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.. each ' brought in- Istantly into u,e bal joint .-SIX IMPORTA� T formulas. Only pel'feet small motor made.,an Supplement 685. Don't take the side shows and miss the main show i the big tent. Ours the Oldest agency for securing patents ; it was established over sixty-five years ago. The Sebastian Lathe Co•• 120 Culvert SI. For user:" Blue Print Paper pply Lanting Machines for making blue print paper linen.• 46 "St " Foot aml ar Power Screw Cutting Au��t LathesFOR FINE, ACCURATE WORK Send for Catalogue B. Sold all garages, auto supply dealers, hardware and general stores-10c. l3-in. BORBEIN AUTO CO. sYz single cylinder.L, Write for Free Sample Manufactured by T Y C CO. Order yonI' motor hom dealer from us. MO�M."��;::;;·1J-Neatest, simplest and be,t on Ithe market. GILSON MFG. Improved bucket wheel construction. ]8-B. Lowest fuel cost for runs Gasoline, Kerosene- Distillate, Gas Alcohol and has perfect ubrication. Any mechanic can opprat e them easi Send for eatalol!., 1 Legal Notices IN VENTORS are Invited communicate with Munn o. bottles."w York and London. Eight sharp cut­ tmg edges. THE EDISON CONCRETE HOUSE q How constructed. makes Blue Prints, Black Prints and Brown Prints. 625 Wash . , concern. CO. Ruby St. Price cents mail. Price cents. From 9-in. ���. Ball­ bearing, safety starting handles for all makes cars.00. Don't scoff. D WAT MOTOR . and states that pays better put over ... Y., 50c