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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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. ''''ashing . 361 roadway, New ork, or 625 Street, Washington, C. pressure, in. All communications are strictly confidential. THE SEBASTIAN IS-INCH ENGINE LATHE HIGH GRADE LOW PRICE Automobile Builders. W. Order from your newsdealer from . each ' brought in- Istantly into u,e bal joint .L, Write for Free Sample Manufactured by T Y C CO. "FREE" Write for Catalogue. 695 Water Street, Seneca Falls, Y., Port Washington, Wis. Accepted the authority. CO. St. It will not run out and leave contact points dry. Sold all garages, auto supply dealers, hardware and general stores-10c. Ruby St. "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. Louis, Mo. 'Publishers '1. and states that pays better put over . S ENTI AME RICAN A ttache(J sny water faucet will deyelop lip to according: s i ze pipe and W:ltB!' pre!;,�llre. Net price $5, cas witlt orrle-l'. A E-For Sixty Ye:m' the Standard the WOJ'ld for Quality. Sag naw; ich A.. l\Ionev b:lcl;; for allY reason. ('at nlog free. CIENTTFTC A:\I ERTCAN Sf' PP1. 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."w York and London. EMEXT 23. Lowest fuel cost for runs Gasoline, Kerosene- Distillate, Gas Alcohol and has perfect ubrication. WILLIAMS, BROWN EARLE, Ine. 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.!!!_ and B K TYPES FOR MARINE AUTOMOBILE and STA· TIONARY ENGINES SEND FOR LAT EST BULLETIN 557 THE flOLTZER-CABOT ELECTRIC CO. Write once for generous sample bottle and Magneto Bulletin., 50c. DETROIT. . a ONE OIL COMPANY, BROADWAY, New York City. Garages, Repair and General Jobbing Shops find this the ideal lathe for their work.l1lal'. 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.. 3 One not too light properly lubricate and keep lubricated any bearing (ballbearing ordinary bearing). J\dive Ag'ents wanted. -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. CRAY MOTOR CO. Any mechanic can opprat e them easi Send for eatalol!., Athol. 361 Broadway, New York WHAI ONE MAGNETO OIL ? January 4. engine made has wide range use. A. 1). Strong, sirupie and durable. For sale uno Co• Inc. The Bible ofthe aero enthusiast, experi­ menter, builder, aviator and advertiser. in. Our IIand-Book Patents will sent free on request. swin�. Both free., Dept., LEIB ST. Don't take the side shows and miss the main show i the big tent. pipe, Ibs.r MUNN COMPANY, Inc. 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., 1 Legal Notices IN VENTORS are Invited communicate with Munn o. BAR . Arrane-ed for Steam or Foot Power, Velocipede or Stand-up rrreadle. makes Blue Prints, Black Prints and Brown Prints. STAI-:'RETT CO. 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. LA FAYETTE, IND. WE LL DRILLING MACHINES Over sizes and 8tyles, for rilling either deep or shallow wells any kind soi rock. vehicle manufacturer using the battery reports that charged ex· hausted battery A·4 cellR the rate of 100 amperes for short tin1('.cyc1e motorS. Louis, Mo. 1492-4 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. State your requirement\> and get our adVIse.. One boy does the work four men. connection., Cincinnati, Ohio Fon G NSMITHS. Order yonI' motor hom dealer from us. GILSON MFG. Price cents., 2109 North Ninth St. ]6. illustrated article published in Scientific meric. THE EDISON CONCRETE HOUSE q How constructed.. Manufactured the The Ke)Jstone Safety Starling Handle Co. A Free Opinion the probable patenta­ bility iTlventi�n will readily gi.00 SI'JIId tor 232 page catalog No. CO. Lowest cost because it delivers greatest available power per horse. I TilE J"., 507 Olive Street, St.. Send for our Special Offer ! ------ ------ --- fiutomobile Running Gears WITH PRESSED STEEL ANGLE IRON FRAMES Also all styles bodies. 3 One contains carbon residue, foreign matter, acid, impurities like all cylinder (mineral) oils. two cylinder. Catalog free. Only pel'feet small motor made. Sent FREE" A. regard to securing valid patent protpction for their in­ v Trade-:llarks and CopyrightM registered. ALOE CO., 308 Park St., L'". For user:" Blue Print Paper pply Lanting Machines for making blue print paper linen. DE P'T , /"'K'# TAPES AND RULES ARE THE BEST. 625 Wash . The Sebastian Lathe Co•• 120 Culvert SI. BABBITT METALS. From 9-in. how much it will cost, practical from archi· tecturaI and engineering standpoint ? These and other important questions relating the structure are discussed good, thorough. M Broadway, New York B ranch Office. Don't scoff. SENECA FALLS MFG. Write/orcatalogue once, mentioning thispaper. Patents and 11 Paten secured. Improved bucket wheel construction. trolyte because the latter constant, chemically, electrically and physically. ���.-SIX IMPORTA� T formulas. Yearly subscription, $3. Please mention the Scientific American when writing- advertisers through wide range, and may far hig]her than would safe with the lead battery. bottles. The nature the support rna· terials and the method applying the active material the plates enable the cell stand dead short circuits without injury. , concern. 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. l3-in. Easily lucked or released turning handle. Try One. WilliAMS BROS Ithaca.., Philadelphia, Pa. Price cents mail. A., ROCKFORD, h.• 46 "St " Foot aml ar Power Screw Cutting Au��t LathesFOR FINE, ACCURATE WORK Send for Catalogue B. \-Vorl{s day NigJlt-makes prints any lenvth. ]8-B., Manufacturers, 417 West 15th SI. , 4" Walnut Street, Philadelphia, Pa. (I'or sale everywhere.01' for Mechanics find Tradesmen. The element made very com,;;act. four cylinder. Y.,an Supplement 685.blisbed 18IiO-ALOl<: Civil Engineering and Surveying Instruments DRA WING MATERIALS SIJPPLIES B ."��;::;;·1J-Neatest, simplest and be,t on Ithe market. 25c.iliu(', in. oxclusively the manufacture 2. TOOL MAKERS, EXPER I· M ENTAL PAIR WO ETC. 918 Chestnut St. MO�M. pipe. i\'1ounted on wheels o�· tonl ls. THE TEMPLE PUMP CO. MIC . PRICE 11<1.. Eight sharp cut­ tmg edges. Send for catalo. The Express System Saves Money. Ball­ bearing, safety starting handles for all makes cars. D WAT MOTOR . water during long periods the life t>f the cell. HOLTZER-CABOT GAS ENGINE JUMP SPARK and M., and all newsdeal ers.. YOU WILL MAKE MISTAKE YOU NOT WRITE FOR INFORMATIQN. 1 for complete catalog today••teU8 all about how these high grade lilotors are built tbe largost plant the world devoted. /). Established 1872.00. Esb. With engines llorse powerR. Scale drawings of mac hine, construction details, subscribers' forum., Chicago, This our 58th year. Send fOl Catalog I>o. 1\[0(. - Every User Blue Prints Should Investigate the New EXPRESS System Blue Printing Automatic, saves half the cost. THE POWER CONTRACTOR'S FAVORITE ENGINE. 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. BORBEIN AUTO CO. any battery any time for half the CO'lt bearing of new battery. sYz single cylinder. 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. Send for Lathe Catalog. Ours the Oldest agency for securing patents ; it was established over sixty-five years ago. with provision for circulation elec. 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.50, cnsh with or­ d(·r.l:ulC>. Let explain. Senel )'onr water pres;;nre and silt supply pipe. L O.ven any inventor furnishing with model sketch and a brief description the device question.water pres­ sure; lbs