. Locomotive engineering : a practical journal of railway motive power and rolling stock . r the meaty points inhis answer, their attention has been takenup more by matters of interest in the me-chanical line and less by a desire to ar-range the management of the company. One of the graduates, who has passedthe examinations, stumped the whole com-mittee by asking What is the indispens-able tool on a coal burner? When, aftera long argument by all hands, some ofwhom insisted that at least fifty tools wereindispensable, he told them it was ascoop, the next question was, What isthe reverse lever f
. Locomotive engineering : a practical journal of railway motive power and rolling stock . r the meaty points inhis answer, their attention has been takenup more by matters of interest in the me-chanical line and less by a desire to ar-range the management of the company. One of the graduates, who has passedthe examinations, stumped the whole com-mittee by asking What is the indispens-able tool on a coal burner? When, aftera long argument by all hands, some ofwhom insisted that at least fifty tools wereindispensable, he told them it was ascoop, the next question was, What isthe reverse lever for? The old engineer answered that questionin this wise: It is to change the position ofthe link on the link block, so the distri-bution of steam can be changed, to makethe engine move either forward or back-ward and to use a greater or less amountof steam at each stroke of the piston, bychanging the point of cut-off of the livesteam. How does it do this? you ask. Well,the upper end of the link is usually con-nected to the go-ahead eccentric; thelower end to the back-up one, and there-. l-NITED ST.\TES BUILDING .\T PARIS E.\POSIT!ON. do with the slip of the block up and downin the link when the engine is moving?No, it does not; that is governed by theposition of the points of suspension of thelink and of the block. The link is sus- fore one end of the link is intended to give pended by the link hanger from the end the proper movement to the valve for go- of the tumbling shaft arm, and travels in ing ahead, the other for backing up. Chang- a path or arc which changes a little as the ing the position of the link in regard to link is raised or lowered by the reverse the link block will change the movement lever. This arc of the link changes a of the valve in relation to that of the pis- great deal more in respect to the path of °- the link block as the block gets nearer to One advantage of the link is that it can the end of the link and the slip of the link be used in any portion
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroa, bookyear1892
