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