. American engineer and railroad journal . the disc from cocking. The valve seat is flat, and isprovided with a projection, which acts as a guide in thegrinding and prevents the cutting of the seat by the wire-drawing of the steam when the valve is opened the valve is slightly raised, as shown in the section, escaping steam cleans the seat of dirt. The makersstate that very little regrinding is required to restore tight-ness after the valve begins to leak. These valves have longthreads in the bonnets, and by means of a narrow seat on theshoulder it, is possible to keep the bonnet
. American engineer and railroad journal . the disc from cocking. The valve seat is flat, and isprovided with a projection, which acts as a guide in thegrinding and prevents the cutting of the seat by the wire-drawing of the steam when the valve is opened the valve is slightly raised, as shown in the section, escaping steam cleans the seat of dirt. The makersstate that very little regrinding is required to restore tight-ness after the valve begins to leak. These valves have longthreads in the bonnets, and by means of a narrow seat on theshoulder it, is possible to keep the bonnet tight, and yet it iseasy to unscrew it. This is considered a positive improve-ment over bonnets having wide shoulders bearing upon widesurfaces upon the top of the valve body To regrind a valveto its seat, the bonnet is removed, the disc nut unscrewed from Jawt/abt, 1906. AMERICAN ENGINEER AND RAILROAD JOURNAL. 35 the disc, and a piece of wood may be inserted In the disc, per-mitting it to be ground perfectly by aid of the projection on. the disc which guides it, thus avoiding the necessity for spe-cial regrinding tools. These valves have tee handles, the holein the handle is tapered, with one side flat, and the handle isheld to the spindle by means of a nut. The flattened sideholds the handle rigidly in place, while the taper permits itto be drawn tightly to the spindle to avoid the annoyance ofloose handles. These valves are made by the Hancock Inspirator Company,86 Liberty street, New York. PERSONALS. Mr. Thomas Jackson lias bet liop BUperintendi Of the Northern Pacific Hallway at Livingston, Mot Mr. M. J. McOraw, ma <■ of the Illinois Central, . transferred from tull to Clinton, III. Mr. 0. C. Waike; baa been appointed foreman of the <ar He- |.;irt ii, I a i Mr. II. .1 Ubienbrock has been appointed assistant mastermechanic of the Wabash Railroad, with headquarters at. Deeatur, 111. St. Louis &. San Francisco at Neodosha, Kansas, succeedingMr. C. E. Brown. M. J. H.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
