. Locomotive engineering : a practical journal of railway motive power and rolling stock . the almost true condition ofthe train line. Again, as to the perfect condition ofthe packing rings in equalizing pistons, 1have been unable to find a great many,either new or in service, for some time,that will not allow air to leak by themsufficiently to give us a clear idea of thecondition of the train line. As a generalrule, if 90 per cent, of our enginemen wereasked how they would test their air-brakecars for train-line leaks, they would sim-ply answer, By moving handle over onlap and watch if the bl
. Locomotive engineering : a practical journal of railway motive power and rolling stock . the almost true condition ofthe train line. Again, as to the perfect condition ofthe packing rings in equalizing pistons, 1have been unable to find a great many,either new or in service, for some time,that will not allow air to leak by themsufficiently to give us a clear idea of thecondition of the train line. As a generalrule, if 90 per cent, of our enginemen wereasked how they would test their air-brakecars for train-line leaks, they would sim-ply answer, By moving handle over onlap and watch if the black pointer why? Simply because they havebeen instructed to do so. Now, from a practical standpoint, itwould be very well if Mr. Blackalls for-nmla was added to this, and enginemenwere instructed to make a few poundsreduction and lap the valve, then watchthe pointer, which is the quickest andsimplest method of testing before leav-ing a terminal. In so doing, it is safe tosay that we will be on the right track lortrain-line leaks. H. A. Flynn,S. & W. Co. Wilkes Baire, -^!Wv--\:;^ Locoiiiotirt Enijliii SECTION OF A NEW HOSE COUPLING. 5. In case the train should part whenin motion, the valves are so arranged asto remain open, thus releasing the air,and the brakes will be set. W. & M. Cunningham. Pittsburg, Pa, Testing for Train Line Leaks. Editors: In reading over the pages of April num-ber of Engineering. I cameto a brief pause upon the two articles ofMessrs. Collom and Hammond, regardingMr. Blackalls method of testing for train-line leaks. While these gentlemens the-ory of testing, etc., is very good, stillthey seem to lose sight of the fact that It is reported that the new undergroundrailway of London will use the Westing-house quick-action automatic brake onits trains. i i @ It appears that the specifications for air-brake hose gotten out by the PeerlessRubber Company are destined to producea lasting benefit. One of the trunk lineshas already
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Keywords: ., bookcentury1800, bookdecade1890, bookidlocomotiveen, bookyear1892
