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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- Every User Blue Prints Should Investigate the New EXPRESS System Blue Printing Automatic, saves half the cost."��;::;;·1J-Neatest, simplest and be,t on Ithe market. 1\[0(. Esb. Ruby St. Louis, Mo. Sold all garages, auto supply dealers, hardware and general stores-10c. 25c. MO�M. Patents and 11 Paten secured. CO., Cincinnati, Ohio Fon G NSMITHS. Louis, Mo.!!!_ and B K TYPES FOR MARINE AUTOMOBILE and STA· TIONARY ENGINES SEND FOR LAT EST BULLETIN 557 THE flOLTZER-CABOT ELECTRIC CO.l:ulC>. and states that pays better put over . LA FAYETTE, IND. "FREE" Write for Catalogue. A. Garages, Repair and General Jobbing Shops find this the ideal lathe for their work.r MUNN COMPANY, Inc., L'". Send for catalo. how much it will cost, practical from archi· tecturaI and engineering standpoint ? These and other important questions relating the structure are discussed good, thorough. A Free Opinion the probable patenta­ bility iTlventi�n will readily gi. DETROIT.. 'Publishers '1. 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. Net price $5, cas witlt orrle-l'. connection. From 9-in. oxclusively the manufacture 2. J\dive Ag'ents wanted. Sag naw; ich A. two cylinder. D WAT MOTOR ., Manufacturers, 417 West 15th SI. Both free. ('at nlog free. 3 One not too light properly lubricate and keep lubricated any bearing (ballbearing ordinary bearing).blisbed 18IiO-ALOl<: Civil Engineering and Surveying Instruments DRA WING MATERIALS SIJPPLIES B . \-Vorl{s day NigJlt-makes prints any lenvth. Order from your newsdealer from . Let explain. For user:" Blue Print Paper pply Lanting Machines for making blue print paper linen. BORBEIN AUTO CO. Ours the Oldest agency for securing patents ; it was established over sixty-five years ago. Ball­ bearing, safety starting handles for all makes cars. ]6. pipe, Ibs. A. In charging, the rate can varied 3 One not too heavy-will positively not gum clog, collect dust dirt, harden dry out. CRAY MOTOR CO. vehicle manufacturer using the battery reports that charged ex· hausted battery A·4 cellR the rate of 100 amperes for short tin1('., ROCKFORD, h. 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. MIC . Try One. Only pel'feet small motor made. I TilE J". water during long periods the life t>f the cell., 50c. GILSON MFG.. ���. 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. Improved bucket wheel construction., 2109 North Ninth St. L O. 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. in.L, Write for Free Sample Manufactured by T Y C CO. l3-in. Yearly subscription, $3.. Send for Lathe Catalog. Please mention the Scientific American when writing- advertisers through wide range, and may far hig]her than would safe with the lead battery. WILLIAMS, BROWN EARLE, Ine..01' for Mechanics find Tradesmen. Price cents. Send for our Special Offer ! ------ ------ --- fiutomobile Running Gears WITH PRESSED STEEL ANGLE IRON FRAMES Also all styles bodies. pipe. Eight sharp cut­ tmg edges. Strong, sirupie and durable. Order yonI' motor hom dealer from us. (I'or sale everywhere. One boy does the work four men. BAR . pressure, in.50, cnsh with or­ d(·r. 1 for complete catalog today••teU8 all about how these high grade lilotors are built tbe largost plant the world devoted. , 4" Walnut Street, Philadelphia, Pa. SENECA FALLS MFG. S ENTI AME RICAN A ttache(J sny water faucet will deyelop lip to according: s i ze pipe and W:ltB!' pre!;,�llre. /). bottles.. 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.cyc1e motorS. The nature the support rna· terials and the method applying the active material the plates enable the cell stand dead short circuits without injury. CO. each ' brought in- Istantly into u,e bal joint . sYz single cylinder. Lowest cost because it delivers greatest available power per horse. illustrated article published in Scientific meric. BABBITT METALS. WE LL DRILLING MACHINES Over sizes and 8tyles, for rilling either deep or shallow wells any kind soi rock.• 46 "St " Foot aml ar Power Screw Cutting Au��t LathesFOR FINE, ACCURATE WORK Send for Catalogue B. 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. trolyte because the latter constant, chemically, electrically and physically. ''''ashing ., Philadelphia, Pa. any battery any time for half the CO'lt bearing of new battery.ven any inventor furnishing with model sketch and a brief description the device question. Lowest fuel cost for runs Gasoline, Kerosene- Distillate, Gas Alcohol and has perfect ubrication. Don't take the side shows and miss the main show i the big tent. The Express System Saves Money. makes Blue Prints, Black Prints and Brown Prints.. EMEXT 23. 361 Broadway, New York WHAI ONE MAGNETO OIL ? January 4.iliu(', in.-SIX IMPORTA� T formulas. with provision for circulation elec. 625 Wash . M Broadway, New York B ranch Office. STAI-:'RETT CO. With engines llorse powerR. Send fOl Catalog I>o. All communications are strictly confidential., Port Washington, Wis. A E-For Sixty Ye:m' the Standard the WOJ'ld for Quality. 918 Chestnut St., Chicago, This our 58th year. 361 roadway, New ork, or 625 Street, Washington, C. Accepted the authority."w York and London. 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. Don't scoff. YOU WILL MAKE MISTAKE YOU NOT WRITE FOR INFORMATIQN. Sent FREE" A.., 1 Legal Notices IN VENTORS are Invited communicate with Munn o. The Sebastian Lathe Co•• 120 Culvert SI. THE EDISON CONCRETE HOUSE q How constructed. a ONE OIL COMPANY, BROADWAY, New York City. Established 1872. WilliAMS BROS Ithaca.,an Supplement 685. Our IIand-Book Patents will sent free on request. slow speed, high duty engine. St. 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. . Any mechanic can opprat e them easi Send for eatalol!. 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. THE SEBASTIAN IS-INCH ENGINE LATHE HIGH GRADE LOW PRICE Automobile Builders.. HOLTZER-CABOT GAS ENGINE JUMP SPARK and M. Easily lucked or released turning handle., Dept. Arrane-ed for Steam or Foot Power, Velocipede or Stand-up rrreadle. DE P'T , /"'K'# TAPES AND RULES ARE THE BEST. Write/orcatalogue once, mentioning thispaper. THE TEMPLE PUMP CO. engine made has wide range use. Price cents mail. Senel )'onr water pres;;nre and silt supply pipe. PRICE 11<1., 507 Olive Street, St. swin�. i\'1ounted on wheels o�· tonl ls. 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. For sale uno Co• Inc. l\Ionev b:lcl;; for allY reason. regard to securing valid patent protpction for their in­ v Trade-:llarks and CopyrightM registered. 3 One contains carbon residue, foreign matter, acid, impurities like all cylinder (mineral) oils.00.l1lal'. The Bible ofthe aero enthusiast, experi­ menter, builder, aviator and advertiser. The element made very com,;;act. "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. 1). -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. Catalog free., LEIB ST.00 SI'JIId tor 232 page catalog No. four cylinder. 1492-4 in. ALOE CO. TOOL MAKERS, EXPER I· M ENTAL PAIR WO ETC. Write once for generous sample bottle and Magneto Bulletin., and all newsdeal ers. , concern. It will not run out and leave contact points dry. THE POWER CONTRACTOR'S FAVORITE ENGINE. State your requirement\> and get our adVIse. 695 Water Street, Seneca Falls, Y. W. Manufactured the The Ke)Jstone Safety Starling Handle Co. Y. CIENTTFTC A:\I ERTCAN Sf' PP1. Scale drawings of mac hine, construction details, subscribers' forum., 308 Park St. ]8-B., Athol.water pres­ sure; lbs