. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . Ilr, •?. AIR PUMP TESTING RACK IN VERTICAL POSITION, SHOWING PIPE CONNECTIONS. flange? I believe the Air Brake .Asso-ciation at one time determined that aflanged shoe gave 30 per cent, more hold-ing power than the plain shoe. James E. , N. Jfy. ^cj. Snj. Fig. 3. NEW YORK AIR PUMP ASD RACKIN HORIZONTAL POSITION. [. one time in the early days of theAir Brake Association, one of its con-ventions discussed this subject, and de-cided that with the brake shoe then inser
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . Ilr, •?. AIR PUMP TESTING RACK IN VERTICAL POSITION, SHOWING PIPE CONNECTIONS. flange? I believe the Air Brake .Asso-ciation at one time determined that aflanged shoe gave 30 per cent, more hold-ing power than the plain shoe. James E. , N. Jfy. ^cj. Snj. Fig. 3. NEW YORK AIR PUMP ASD RACKIN HORIZONTAL POSITION. [. one time in the early days of theAir Brake Association, one of its con-ventions discussed this subject, and de-cided that with the brake shoe then inservice, the experience of some of themembers had been that a flanged shoegave about 30 per cent, greater retarda- October, 1904. RAILWAY AND LOCOMOTIVE ENGINEERING 46. tion than the plain slioe. However, sincethat time the development of brake shoeshas progressed to such a degree thatnearly all roads arc now using the flangedbrake shoes on all passenger equipmentcars, with the possible exception of themiddle pair of wheels in the six wheeltruck, where the plain shoe is used be-cause of insufficient room for a flangedshoe. Several years ago, one road wasobliged to remove all its flanged brakeshoes, due to wheel sliding, and replacedthem with the plain shoe; however, con-ditions seem to have changed, either inpractice or in brake shoe mixture ofof metals, an
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