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