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