Locomotive appliances . Fig. 4. Illustrative Model of New York Quick Action Triple Valve. (Position of valves in service application^. valves in emergency position. The arrows indicatethe course of the air in each position. The triple valve proper consists of the triple pistonvalve (128 ), the exhaust valve (38) and the gradu-ating valve (48). The graduating and exhaustvalves are of the slide valve pattern, and in theirarrangement on the triple piston stem are independent LOCOMOTIVE APPLIANCES. 59 of each other. The triple piston valve is of the cup orextended pattern, and forms a cylinder for
Locomotive appliances . Fig. 4. Illustrative Model of New York Quick Action Triple Valve. (Position of valves in service application^. valves in emergency position. The arrows indicatethe course of the air in each position. The triple valve proper consists of the triple pistonvalve (128 ), the exhaust valve (38) and the gradu-ating valve (48). The graduating and exhaustvalves are of the slide valve pattern, and in theirarrangement on the triple piston stem are independent LOCOMOTIVE APPLIANCES. 59 of each other. The triple piston valve is of the cup orextended pattern, and forms a cylinder for the ventvalve piston (129). These three valves, combined, ofcourse, constitute the triple valve, and the triple valveis the part that gives the brake its automatic quick action part of the triple consists of the. Fig. 5. Illustrative Model of New York Quick Action Triple Valve.(Valves in emergency position-. vent valve piston (120 ), the extended cup or cylinderof piston (128), vent valve (71 ), venl valve spring(132), emergency piston (137), emergency valve(139), and brake cylinder check valve (117). Tothese parts we may add the venl ports (M and J) andthe passages (//, L L and K). In the normal position, that o{ charging the au\diary reservoir, as shown in Fig. 3, the air comes in 60 LOCOMOTIVE APPLIANCES from the train-pipe, as indicated by the arrows, passesby tHe triple piston (128) through the feed groove {B)to the auxiliary reservoir. At the same time it chargeschamber {G), between the vent valve piston (129 ) andthe triple piston (128 ) through the very small port(F) drilled through the vent valve piston (129.) Main piston (128) has the same stroke for bothservice and emergency application. The small port (F) is of such a size that when triple piston (128 )moves slowly to the left, as
Size: 1435px × 1742px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectlocomot, bookyear1901
