. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . mentfor any weight of car, and in next monthsissue the operation of the different partswill be explained in detail. ily accomplished when a graduation of re-lease is employed as with the L. N. and-P. C. brake equipments, but in some quar-ters the impression prevailed that the in-itial reduction was to be of not less than20 to 25 lbs., which in itself tends to pro-duce shocks in the train even if the speed July, 1916. RAILWAY AND LOCOMOTIVE ENGINEERING. 231 is high. It is now, however, unanimo
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . mentfor any weight of car, and in next monthsissue the operation of the different partswill be explained in detail. ily accomplished when a graduation of re-lease is employed as with the L. N. and-P. C. brake equipments, but in some quar-ters the impression prevailed that the in-itial reduction was to be of not less than20 to 25 lbs., which in itself tends to pro-duce shocks in the train even if the speed July, 1916. RAILWAY AND LOCOMOTIVE ENGINEERING. 231 is high. It is now, however, unanimously equal in opposite directions, the result of agreed that the initial reduction should the trucks stopping will he to release the be what is termed a split reduction, tension on the springs and throw the car that is, instead of one 20 It), reduction bodies back to their proper positions on in brake pipe pressure, two 10 lb. reduc- the trucks with the usual disagreeable tions should be made, or better yet, the lurch that it is so desirable to avoid. The RELEASE,SERVICEAND Er-ERGENCYMAGNET VALVES. P. S. r,R.\KE. first reduction to consist of 8 or 9 lbs., cliief problem encountered in attemptingand after the train slack has adjusted the smooth stop is then obtaining a lowitself, the brake can be applied as heavily brake cylinder pressure with which toas desired or as conditions of service may complete the stop and as it is readily de-require, veloped or reduced the desired amountIt is undeistood that a train cainiot be with a graduated release type of brake, it volves uniform retarding effect on thedifTcrcnt cars in the train which cannotbe obtained with very unequal brake cyl-inder pressure; however, if all brakes areapplied and the brake cylinder pressurethroughout is low it must be more or lessuniform, but uniformity of brake cylinderpressure cannot be obtained if there is avery great difference in the length of thepiston travel of the brake cylinders. Ifon
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