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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in. Let explain. BORBEIN AUTO CO. Eight sharp cut­ tmg edges. Manufactured the The Ke)Jstone Safety Starling Handle Co., Philadelphia, Pa. l3-in. Patents and 11 Paten secured. Don't take the side shows and miss the main show i the big tent. ]8-B. LA FAYETTE, IND., and all newsdeal ers. State your requirement\> and get our adVIse., 2109 North Ninth St.. ('at nlog free., LEIB ST., L'"., 507 Olive Street, St. 'Publishers '1. Lowest cost because it delivers greatest available power per horse. The Sebastian Lathe Co•• 120 Culvert SI. J\dive Ag'ents wanted. Price cents. four cylinder. pressure, in. ALOE CO. water during long periods the life t>f the cell., 1 Legal Notices IN VENTORS are Invited communicate with Munn o. 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. Louis, Mo., Chicago, This our 58th year. , concern. With engines llorse powerR. , 4" Walnut Street, Philadelphia, Pa. Price cents mail. oxclusively the manufacture 2. I TilE J". Write once for generous sample bottle and Magneto Bulletin. Scale drawings of mac hine, construction details, subscribers' forum. Send for catalo. 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. Any mechanic can opprat e them easi Send for eatalol!. l\Ionev b:lcl;; for allY reason. S ENTI AME RICAN A ttache(J sny water faucet will deyelop lip to according: s i ze pipe and W:ltB!' pre!;,�llre., Port Washington, Wis. Write/orcatalogue once, mentioning thispaper. Sent FREE" A. Send for Lathe Catalog. Order from your newsdealer from . regard to securing valid patent protpction for their in­ v Trade-:llarks and CopyrightM registered. Both free.• 46 "St " Foot aml ar Power Screw Cutting Au��t LathesFOR FINE, ACCURATE WORK Send for Catalogue B.cyc1e motorS. "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. The Bible ofthe aero enthusiast, experi­ menter, builder, aviator and advertiser. illustrated article published in Scientific meric.,an Supplement 685.00 SI'JIId tor 232 page catalog No. Ours the Oldest agency for securing patents ; it was established over sixty-five years ago., Manufacturers, 417 West 15th SI. Improved bucket wheel construction. L O. 1\[0(., 308 Park St. The Express System Saves Money. with provision for circulation elec. In charging, the rate can varied 3 One not too heavy-will positively not gum clog, collect dust dirt, harden dry out.. 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. MIC . trolyte because the latter constant, chemically, electrically and physically. Catalog free. Yearly subscription, $3. 3 One not too light properly lubricate and keep lubricated any bearing (ballbearing ordinary bearing). Senel )'onr water pres;;nre and silt supply pipe. 918 Chestnut 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.. Esb. ''''ashing ., Cincinnati, Ohio Fon G NSMITHS. Y. D WAT MOTOR . TOOL MAKERS, EXPER I· M ENTAL PAIR WO ETC. ���. 361 Broadway, New York WHAI ONE MAGNETO OIL ? January 4. STAI-:'RETT CO. It will not run out and leave contact points dry.r MUNN COMPANY, Inc. CRAY MOTOR CO. CO. 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. A. any battery any time for half the CO'lt bearing of new battery. 25c. All communications are strictly confidential."��;::;;·1J-Neatest, simplest and be,t on Ithe market. Louis, Mo. THE TEMPLE PUMP CO. bottles. YOU WILL MAKE MISTAKE YOU NOT WRITE FOR INFORMATIQN.. MO�M. 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.01' for Mechanics find Tradesmen. 1). sYz single cylinder. 3 One contains carbon residue, foreign matter, acid, impurities like all cylinder (mineral) oils. 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. From 9-in. Easily lucked or released turning handle., Athol. 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. Garages, Repair and General Jobbing Shops find this the ideal lathe for their work., Dept. vehicle manufacturer using the battery reports that charged ex· hausted battery A·4 cellR the rate of 100 amperes for short tin1('. The element made very com,;;act. Send for our Special Offer ! ------ ------ --- fiutomobile Running Gears WITH PRESSED STEEL ANGLE IRON FRAMES Also all styles bodies. HOLTZER-CABOT GAS ENGINE JUMP SPARK and M. how much it will cost, practical from archi· tecturaI and engineering standpoint ? These and other important questions relating the structure are discussed good, thorough. and states that pays better put over . GILSON MFG. pipe. A E-For Sixty Ye:m' the Standard the WOJ'ld for Quality. PRICE 11<1.L, Write for Free Sample Manufactured by T Y C CO. /). One boy does the work four men. THE SEBASTIAN IS-INCH ENGINE LATHE HIGH GRADE LOW PRICE Automobile Builders.. 361 roadway, New ork, or 625 Street, Washington, C. CIENTTFTC A:\I ERTCAN Sf' PP1. Try One. BAR . Sag naw; ich A. WE LL DRILLING MACHINES Over sizes and 8tyles, for rilling either deep or shallow wells any kind soi rock. a ONE OIL COMPANY, BROADWAY, New York City. The nature the support rna· terials and the method applying the active material the plates enable the cell stand dead short circuits without injury.50, cnsh with or­ d(·r.blisbed 18IiO-ALOl<: Civil Engineering and Surveying Instruments DRA WING MATERIALS SIJPPLIES B . 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. 1 for complete catalog today••teU8 all about how these high grade lilotors are built tbe largost plant the world devoted. Send fOl Catalog I>o.. 625 Wash . 695 Water Street, Seneca Falls, Y. Ball­ bearing, safety starting handles for all makes cars. For user:" Blue Print Paper pply Lanting Machines for making blue print paper linen. DE P'T , /"'K'# TAPES AND RULES ARE THE BEST. Our IIand-Book Patents will sent free on request. Net price $5, cas witlt orrle-l'. Arrane-ed for Steam or Foot Power, Velocipede or Stand-up rrreadle. Established 1872.l1lal'.iliu(', in. Lowest fuel cost for runs Gasoline, Kerosene- Distillate, Gas Alcohol and has perfect ubrication. Strong, sirupie and durable. (I'or sale everywhere. WilliAMS BROS Ithaca.!!!_ and B K TYPES FOR MARINE AUTOMOBILE and STA· TIONARY ENGINES SEND FOR LAT EST BULLETIN 557 THE flOLTZER-CABOT ELECTRIC CO., ROCKFORD, h.water pres­ sure; lbs. BABBITT METALS. . ]6. Only pel'feet small motor made. SENECA FALLS MFG. St. -Whereas the lead cell the constitu­ tion (proportions acid and water) con· ductivity and specific gravity all undergo definite changJe during the cycle of charge and discharge, the Edison cell these ql,lalities remain unaltered. A. Sold all garages, auto supply dealers, hardware and general stores-10c. DETROIT. W. THE EDISON CONCRETE HOUSE q How constructed. "FREE" Write for Catalogue.l:ulC>.ven any inventor furnishing with model sketch and a brief description the device question.-SIX IMPORTA� T formulas. Don't scoff... A Free Opinion the probable patenta­ bility iTlventi�n will readily gi. THE POWER CONTRACTOR'S FAVORITE ENGINE. Accepted the authority. swin�. Order yonI' motor hom dealer from us. For sale uno Co• Inc. pipe, Ibs. EMEXT 23. 1492-4 in. slow speed, high duty engine. each ' brought in- Istantly into u,e bal joint . engine made has wide range use. \-Vorl{s day NigJlt-makes prints any lenvth. WILLIAMS, BROWN EARLE, Ine., 50c. - Every User Blue Prints Should Investigate the New EXPRESS System Blue Printing Automatic, saves half the cost."w York and London.00. BIotor for grmding, polishing, fans, sewing mtwhines for Doctors, Dl'ntists, Urn;!' �:)��:Il��l�d;�lfe!�$e;:'����f9���ei�� i �:�· tor and pulle:v 'olll)� $2. connection. M Broadway, New York B ranch Office. Please mention the Scientific American when writing- advertisers through wide range, and may far hig]her than would safe with the lead battery. Ruby St. CO. two cylinder. i\'1ounted on wheels o�· tonl ls. makes Blue Prints, Black Prints and Brown Prints