A. About fifteen pounds, with piston strokes varying from 10 to 15 per
minute.
4. Q. How can the duplex stoker driving engine be started, stopped, or
reversed?
A. By means of operating and reversing rod, fastened to the back head
and connected with the valve on reverse head of engine cylinder.
5. Q. How can the conveying screws be started, stopped, or reversed
separately or together?
A. By ratchet and pawl arrangement controlling each.
6. Q. What practice should be followed in building up the fire before
leaving a terminal?
A. Build up a light even fire by hand and do not bring stoker into use
until the locomotive is working steam.