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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WilliAMS BROS Ithaca. Patents and 11 Paten secured. with provision for circulation elec..00 SI'JIId tor 232 page catalog No. Write once for generous sample bottle and Magneto Bulletin. St. BORBEIN AUTO CO. State your requirement\> and get our adVIse. Eight sharp cut­ tmg edges.water pres­ sure; lbs. Ours the Oldest agency for securing patents ; it was established over sixty-five years ago., Port Washington, Wis. With engines llorse powerR. Established 1872. Ruby St. .blisbed 18IiO-ALOl<: Civil Engineering and Surveying Instruments DRA WING MATERIALS SIJPPLIES B . Manufactured the The Ke)Jstone Safety Starling Handle Co.-SIX IMPORTA� T formulas. The Sebastian Lathe Co•• 120 Culvert SI. Sent FREE" A. ���. oxclusively the manufacture 2. 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. engine made has wide range use.l1lal'. Easily lucked or released turning handle. 361 roadway, New ork, or 625 Street, Washington, C. Louis, Mo. "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. Any mechanic can opprat e them easi Send for eatalol!. 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. THE POWER CONTRACTOR'S FAVORITE ENGINE. From 9-in. 25c. MO�M. 695 Water Street, Seneca Falls, Y. CO. 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. 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. Senel )'onr water pres;;nre and silt supply pipe., 50c.r MUNN COMPANY, Inc. 1 for complete catalog today••teU8 all about how these high grade lilotors are built tbe largost plant the world devoted. 'Publishers '1.. Both free. S ENTI AME RICAN A ttache(J sny water faucet will deyelop lip to according: s i ze pipe and W:ltB!' pre!;,�llre. Accepted the authority. J\dive Ag'ents wanted. Lowest fuel cost for runs Gasoline, Kerosene- Distillate, Gas Alcohol and has perfect ubrication. CO. 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.• 46 "St " Foot aml ar Power Screw Cutting Au��t LathesFOR FINE, ACCURATE WORK Send for Catalogue B. - Every User Blue Prints Should Investigate the New EXPRESS System Blue Printing Automatic, saves half the cost., Athol. Y. Price cents. I TilE J"., Philadelphia, Pa. , concern. The Bible ofthe aero enthusiast, experi­ menter, builder, aviator and advertiser. Price cents mail. A. any battery any time for half the CO'lt bearing of new battery. Let explain. /). in. THE TEMPLE PUMP CO.iliu(', in. Send for our Special Offer ! ------ ------ --- fiutomobile Running Gears WITH PRESSED STEEL ANGLE IRON FRAMES Also all styles bodies. "FREE" Write for Catalogue.cyc1e motorS. Strong, sirupie and durable.. Try One. Only pel'feet small motor made. 361 Broadway, New York WHAI ONE MAGNETO OIL ? January 4. Scale drawings of mac hine, construction details, subscribers' forum.00.. Lowest cost because it delivers greatest available power per horse. SENECA FALLS MFG. For user:" Blue Print Paper pply Lanting Machines for making blue print paper linen., Dept. Catalog free. i\'1ounted on wheels o�· tonl ls. pressure, in. 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. MIC . Sag naw; ich A. Sold all garages, auto supply dealers, hardware and general stores-10c. Order from your newsdealer from . Net price $5, cas witlt orrle-l'. CIENTTFTC A:\I ERTCAN Sf' PP1. Improved bucket wheel construction. makes Blue Prints, Black Prints and Brown Prints. 1492-4 in. 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. A. The element made very com,;;act. W., Manufacturers, 417 West 15th SI.01' for Mechanics find Tradesmen. ('at nlog free. All communications are strictly confidential., Cincinnati, Ohio Fon G NSMITHS. L O. A Free Opinion the probable patenta­ bility iTlventi�n will readily gi. HOLTZER-CABOT GAS ENGINE JUMP SPARK and M. and states that pays better put over . (I'or sale everywhere.,an Supplement 685.. YOU WILL MAKE MISTAKE YOU NOT WRITE FOR INFORMATIQN. each ' brought in- Istantly into u,e bal joint . GILSON MFG. DETROIT. pipe. Ball­ bearing, safety starting handles for all makes cars., ROCKFORD, h. Send for Lathe Catalog. Order yonI' motor hom dealer from us. One boy does the work four men. -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. 3 One contains carbon residue, foreign matter, acid, impurities like all cylinder (mineral) oils. l\Ionev b:lcl;; for allY reason. water during long periods the life t>f the cell."��;::;;·1J-Neatest, simplest and be,t on Ithe market. Arrane-ed for Steam or Foot Power, Velocipede or Stand-up rrreadle., 507 Olive Street, St. Send fOl Catalog I>o. regard to securing valid patent protpction for their in­ v Trade-:llarks and CopyrightM registered. ''''ashing . ]8-B. illustrated article published in Scientific meric.. TOOL MAKERS, EXPER I· M ENTAL PAIR WO ETC. Write/orcatalogue once, mentioning thispaper., 2109 North Ninth St. THE EDISON CONCRETE HOUSE q How constructed. , 4" Walnut Street, Philadelphia, Pa. Send for catalo. PRICE 11<1. BABBITT METALS. vehicle manufacturer using the battery reports that charged ex· hausted battery A·4 cellR the rate of 100 amperes for short tin1('. \-Vorl{s day NigJlt-makes prints any lenvth. D WAT MOTOR ., 1 Legal Notices IN VENTORS are Invited communicate with Munn o.!!!_ and B K TYPES FOR MARINE AUTOMOBILE and STA· TIONARY ENGINES SEND FOR LAT EST BULLETIN 557 THE flOLTZER-CABOT ELECTRIC CO. 1\[0(. M Broadway, New York B ranch Office. 918 Chestnut St."w York and London. Don't scoff. sYz single cylinder. ]6. a ONE OIL COMPANY, BROADWAY, New York City. l3-in., and all newsdeal ers. Our IIand-Book Patents will sent free on request. THE SEBASTIAN IS-INCH ENGINE LATHE HIGH GRADE LOW PRICE Automobile Builders. slow speed, high duty engine. STAI-:'RETT CO. 625 Wash . Yearly subscription, $3. connection. WILLIAMS, BROWN EARLE, Ine. how much it will cost, practical from archi· tecturaI and engineering standpoint ? These and other important questions relating the structure are discussed good, thorough. 3 One not too light properly lubricate and keep lubricated any bearing (ballbearing ordinary bearing). In charging, the rate can varied 3 One not too heavy-will positively not gum clog, collect dust dirt, harden dry out. Equip Your Car With the "Webster" Safely Starting Handle, positive its action, absolutely prevents injury from back-kicks, adopted part 0/regular equipmentfor lco cars. BIotor for grmding, polishing, fans, sewing mtwhines for Doctors, Dl'ntists, Urn;!' �:)��:Il��l�d;�lfe!�$e;:'����f9���ei�� i �:�· tor and pulle:v 'olll)� $2.., L'". CRAY MOTOR CO. WE LL DRILLING MACHINES Over sizes and 8tyles, for rilling either deep or shallow wells any kind soi rock. For sale uno Co• Inc. Esb. 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. BAR .L, Write for Free Sample Manufactured by T Y C CO. It will not run out and leave contact points dry. 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. pipe, Ibs.. LA FAYETTE, IND. Garages, Repair and General Jobbing Shops find this the ideal lathe for their work. trolyte because the latter constant, chemically, electrically and physically., LEIB ST. Don't take the side shows and miss the main show i the big tent.50, cnsh with or­ d(·r.l:ulC>. The Express System Saves Money. 1). A E-For Sixty Ye:m' the Standard the WOJ'ld for Quality. two cylinder. ALOE CO., Chicago, This our 58th year. EMEXT 23.ven any inventor furnishing with model sketch and a brief description the device question. swin�., 308 Park St. Please mention the Scientific American when writing- advertisers through wide range, and may far hig]her than would safe with the lead battery. four cylinder. DE P'T , /"'K'# TAPES AND RULES ARE THE BEST. bottles