Scientific American 1941

| Kategorie: Časopis  | Tento dokument chci!

Thomas A. Edison's Latest Invention A Storage Battery Designed and Constructed from the Automobile User's Point of View ...

Strana 4 z 5

Vámi hledaný text obsahuje tato stránku dokumentu který není autorem určen k veřejnému šíření.

Jak získat tento dokument?






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