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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CRAY MOTOR CO. Any mechanic can opprat e them easi Send for eatalol!.blisbed 18IiO-ALOl<: Civil Engineering and Surveying Instruments DRA WING MATERIALS SIJPPLIES B . WilliAMS BROS Ithaca., Philadelphia, Pa. engine made has wide range use. Sag naw; ich A. 361 Broadway, New York WHAI ONE MAGNETO OIL ? January 4., 1 Legal Notices IN VENTORS are Invited communicate with Munn o. , 4" Walnut Street, Philadelphia, Pa. Established 1872. -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. Easily lucked or released turning handle. Don't scoff. The Express System Saves Money. Net price $5, cas witlt orrle-l'. Price cents. Order yonI' motor hom dealer from us. Ball­ bearing, safety starting handles for all makes cars. THE POWER CONTRACTOR'S FAVORITE ENGINE. STAI-:'RETT CO."��;::;;·1J-Neatest, simplest and be,t on Ithe market., LEIB ST. 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. Ours the Oldest agency for securing patents ; it was established over sixty-five years ago. pipe, Ibs. vehicle manufacturer using the battery reports that charged ex· hausted battery A·4 cellR the rate of 100 amperes for short tin1('. Accepted the authority. Manufactured the The Ke)Jstone Safety Starling Handle Co.50, cnsh with or­ d(·r.00 SI'JIId tor 232 page catalog No.. \-Vorl{s day NigJlt-makes prints any lenvth. For user:" Blue Print Paper pply Lanting Machines for making blue print paper linen.. ]6. two cylinder. bottles. pressure, in. Sold all garages, auto supply dealers, hardware and general stores-10c. CO. Ruby St. LA FAYETTE, IND. 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.-SIX IMPORTA� T formulas. Let explain. All communications are strictly confidential. The nature the support rna· terials and the method applying the active material the plates enable the cell stand dead short circuits without injury. 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. Garages, Repair and General Jobbing Shops find this the ideal lathe for their work. MIC . A. Send for catalo. ���.L, Write for Free Sample Manufactured by T Y C 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. A.!!!_ and B K TYPES FOR MARINE AUTOMOBILE and STA· TIONARY ENGINES SEND FOR LAT EST BULLETIN 557 THE flOLTZER-CABOT ELECTRIC CO. I TilE J". /). connection. 361 roadway, New ork, or 625 Street, Washington, C.l1lal'. - Every User Blue Prints Should Investigate the New EXPRESS System Blue Printing Automatic, saves half the cost. The element made very com,;;act.r MUNN COMPANY, Inc. 25c. Strong, sirupie and durable. sYz single cylinder. ''''ashing . BAR . Sent FREE" A. Eight sharp cut­ tmg edges. ('at nlog free.cyc1e motorS., ROCKFORD, h. 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. HOLTZER-CABOT GAS ENGINE JUMP SPARK and M. 3 One contains carbon residue, foreign matter, acid, impurities like all cylinder (mineral) oils., Chicago, This our 58th year. 918 Chestnut St. 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., Athol. Send for our Special Offer ! ------ ------ --- fiutomobile Running Gears WITH PRESSED STEEL ANGLE IRON FRAMES Also all styles bodies. Patents and 11 Paten secured. swin�.iliu(', in., Dept. J\dive Ag'ents wanted. Y. State your requirement\> and get our adVIse. THE EDISON CONCRETE HOUSE q How constructed. each ' brought in- Istantly into u,e bal joint ."w York and London. Louis, Mo. Price cents mail. trolyte because the latter constant, chemically, electrically and physically. a ONE OIL COMPANY, BROADWAY, New York City. S ENTI AME RICAN A ttache(J sny water faucet will deyelop lip to according: s i ze pipe and W:ltB!' pre!;,�llre. BABBITT METALS. SENECA FALLS MFG. oxclusively the manufacture 2. Senel )'onr water pres;;nre and silt supply pipe..l:ulC>. pipe. Only pel'feet small motor made.01' for Mechanics find Tradesmen. BORBEIN AUTO CO. 'Publishers '1. St..• 46 "St " Foot aml ar Power Screw Cutting Au��t LathesFOR FINE, ACCURATE WORK Send for Catalogue B. D WAT MOTOR . 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. ALOE CO. THE TEMPLE PUMP CO. In charging, the rate can varied 3 One not too heavy-will positively not gum clog, collect dust dirt, harden dry out. From 9-in. Our IIand-Book Patents will sent free on request. Send for Lathe Catalog. Send fOl Catalog I>o. Write/orcatalogue once, mentioning thispaper. THE SEBASTIAN IS-INCH ENGINE LATHE HIGH GRADE LOW PRICE Automobile Builders. DE P'T , /"'K'# TAPES AND RULES ARE THE BEST.00. 1\[0(. "FREE" Write for Catalogue. (I'or sale everywhere. L O. Catalog free. CO. GILSON MFG., Port Washington, Wis. in., 2109 North Ninth St. 1)., 308 Park St. . four cylinder. Yearly subscription, $3. l\Ionev b:lcl;; for allY reason. W. Bill' THELOWESTCOSTENGINE ��{!i�\�;:�leasIest e machine operates, delivering steadier power than any other gasolIne engine, adapting especially for operating farm machinery, with better results and least waste grain. WILLIAMS, BROWN EARLE, Ine. ]8-B. Arrane-ed for Steam or Foot Power, Velocipede or Stand-up rrreadle. how much it will cost, practical from archi· tecturaI and engineering standpoint ? These and other important questions relating the structure are discussed good, thorough. The Bible ofthe aero enthusiast, experi­ menter, builder, aviator and advertiser. illustrated article published in Scientific meric. and states that pays better put over . , concern. 1 for complete catalog today••teU8 all about how these high grade lilotors are built tbe largost plant the world devoted. A Free Opinion the probable patenta­ bility iTlventi�n will readily gi. BIotor for grmding, polishing, fans, sewing mtwhines for Doctors, Dl'ntists, Urn;!' �:)��:Il��l�d;�lfe!�$e;:'����f9���ei�� i �:�· tor and pulle:v 'olll)� $2. TOOL MAKERS, EXPER I· M ENTAL PAIR WO ETC. regard to securing valid patent protpction for their in­ v Trade-:llarks and CopyrightM registered. slow speed, high duty engine. Both free. makes Blue Prints, Black Prints and Brown Prints. i\'1ounted on wheels o�· tonl ls. 3 One not too light properly lubricate and keep lubricated any bearing (ballbearing ordinary bearing). Louis, Mo. CIENTTFTC A:\I ERTCAN Sf' PP1. With engines llorse powerR. EMEXT 23. with provision for circulation elec. "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. 695 Water Street, Seneca Falls, Y. Improved bucket wheel construction. YOU WILL MAKE MISTAKE YOU NOT WRITE FOR INFORMATIQN.. Don't take the side shows and miss the main show i the big tent., Manufacturers, 417 West 15th SI., and all newsdeal ers. WE LL DRILLING MACHINES Over sizes and 8tyles, for rilling either deep or shallow wells any kind soi rock. A E-For Sixty Ye:m' the Standard the WOJ'ld for Quality.. Try One.ven any inventor furnishing with model sketch and a brief description the device question. Please mention the Scientific American when writing- advertisers through wide range, and may far hig]her than would safe with the lead battery. The Sebastian Lathe Co•• 120 Culvert SI. Write once for generous sample bottle and Magneto Bulletin., Cincinnati, Ohio Fon G NSMITHS.water pres­ sure; lbs. DETROIT., 507 Olive Street, St. Esb. Lowest cost because it delivers greatest available power per horse. It will not run out and leave contact points dry. 1492-4 in., 50c. M Broadway, New York B ranch Office. l3-in. PRICE 11<1. One boy does the work four men. Scale drawings of mac hine, construction details, subscribers' forum. Lowest fuel cost for runs Gasoline, Kerosene- Distillate, Gas Alcohol and has perfect ubrication.. 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. 625 Wash . water during long periods the life t>f the cell. Order from your newsdealer from . any battery any time for half the CO'lt bearing of new battery. For sale uno Co• Inc., L'".,an Supplement 685. MO�M