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