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