. American engineer and railroad journal . ->n—3i New Plstm Valve Locomotive Works. piston valves on page 199 of our .June issue, the pressure ofsteam, which was allowed to get under these rings, set thepacking out against the walls of the casing and caused an ex-cessive frictional resistance to the movements of the Whyte, in the table printed on page 201 of our June issue,shows that the piston valve with wide rings, to which he refers,was not as well balanced as the ordinary D valve of the Chi-cago & North Western R. R. As an appendix to Mr. Whytes article, we pre
. American engineer and railroad journal . ->n—3i New Plstm Valve Locomotive Works. piston valves on page 199 of our .June issue, the pressure ofsteam, which was allowed to get under these rings, set thepacking out against the walls of the casing and caused an ex-cessive frictional resistance to the movements of the Whyte, in the table printed on page 201 of our June issue,shows that the piston valve with wide rings, to which he refers,was not as well balanced as the ordinary D valve of the Chi-cago & North Western R. R. As an appendix to Mr. Whytes article, we presented an en-graving showing the packing rings of the piston valves used in i. ■;,---//----r;—■;=;:t ?;i j t „. Sctibie line marked rrffen Bushing for Piston Valve. the auxiliary engines in the British naval vessels, and now, bycourtesy of the Brooks Locomotive Works, the new pistonvalves used in locomotives recently built by them are illus-trated. This arrangement is really the application of the junk ringpiston packing to the construction of piston valves, and theBrooks Locomotive Works plan is quite similar to the BritishAdmiralty practice. The joints between the bull rings and thefollowers are made steam tight, yet they are loose enough toprevent the packing from becoming bound by the follower. page 190 of our issue of June, 1898. The reports concerningthe operation of the valves in service are favorable, and thisform of packing may be expected to give good results. Graphic methods of recording statistics have made muchprcgiess during the past few years, and there is much to rec-ommend them. The manager of an important enterprise mustbe informed at all times as to the condition of the work
Size: 2349px × 1064px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
