. Science of railways . Fig. Passer Raised to Full Extent. This drainage port G is a very essential factor,as it not only provides a drain for condensed waterin the cylinder, but it also acts as a vent for cir-culating steam which is claimed to prevent freez-ing in cold weather* 708 LOCOMOTIVE APPLIANCES. RYAN—GALLOWAY COAL PASSER The reciprocating type of coal passer, as shown in accom-panying cuts, consists of a plunger (1) and a trough (2), theformer actuated by a piston rod (5), operated by an eleven-inch cylinder (3) and a highly efficient valve gear (G, 7, 8 an^. General view of locomoti
. Science of railways . Fig. Passer Raised to Full Extent. This drainage port G is a very essential factor,as it not only provides a drain for condensed waterin the cylinder, but it also acts as a vent for cir-culating steam which is claimed to prevent freez-ing in cold weather* 708 LOCOMOTIVE APPLIANCES. RYAN—GALLOWAY COAL PASSER The reciprocating type of coal passer, as shown in accom-panying cuts, consists of a plunger (1) and a trough (2), theformer actuated by a piston rod (5), operated by an eleven-inch cylinder (3) and a highly efficient valve gear (G, 7, 8 an^. General view of locomotive tender with coal passer. 9). The cylinder (3) and valve motion (6, 7, 8 and 9) arelocated near the bottom and just behind the back slope sheet(21) in the rear of the coal pit and in a space separated fromthe water space of the tender. The trough (1) is attached to I LOCOMOTIVE APPLIANCES. 709
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