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