. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . of pins and bolts subjected to wear andball races are of steel, case hardened andground, and all working parts are ofphosphor bronze. Tlie Imperial drillsare manufactured by the Rand DrillCompany of New York. A neat little illustrated catalogue fromthe John Davis Company of Chicago hasjust come to hand. This concern manu-factures such specialties as reducingvalves, steam traps, safety water columns,separators, blow-off valves, pump regu-lators, globe angle valves, check valvesand stea
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . of pins and bolts subjected to wear andball races are of steel, case hardened andground, and all working parts are ofphosphor bronze. Tlie Imperial drillsare manufactured by the Rand DrillCompany of New York. A neat little illustrated catalogue fromthe John Davis Company of Chicago hasjust come to hand. This concern manu-factures such specialties as reducingvalves, steam traps, safety water columns,separators, blow-off valves, pump regu-lators, globe angle valves, check valvesand steam fittings. Enclosed with thecatalogue were a couple of facsimile let-ters from a prominent superintendent ofmotive power, who speaks in high termsof praise of a No. 3 Eclipse reducingvalve purchased from the John DavisCompany. The other letter refers to a Hochfeldt combination relief and backpressure valve. The feature of the valvewhich is favorably commented upon istlial it can be changed from a single seat , AuKust, 1004, RAILWAY ANIJ ENGINEERING 389 Q and C PriestSnow Flanger. Tfli*«r,- Order now. Dont wait tillwinter. Send for catalogue. Railway Appliances Co. OLD COLONY BUILDING, CHICAGO114 LIBERTY STREET, NEW YORK THE ROBERT W. HUNT & CO. Bureau of Inspection. Tests and Consultation,1137 THE ROOKERY, CHICAGO. «6 Broadway, New York. Itirk Building, Fittaburgh. 31 Norfolk House. Loudon, of Steel Rails, Splice Bars, Railroad Cars,Wheels, Axles, etc. Chemical Lauoratory-Aualyeieof Ores, Iron, Steel, Oils, Water, etc. Physical Labo-RAToRY—Test of Metalfl, Drop and Pulling Test of Coup-iers. Draw Bars, TestN of Boilers, Enf^lnt^N and Loco met! Ten. 211 rConcise Answers(straight Questions HandlingLocomotives Instruction inCatechism formFor Firemenand EngineersExaminations By W. O. THOMPSON Price 50 Cents valve 10 a double seat valve very quickly,which is an advanlaKe where a shopis run with stationary engine condensingat one se
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