Steam and the locomotive engine by Evers Henry

Author:Evers, Henry
Language: eng
Format: epub, pdf
Tags: Locomotives, Steam-engines
Publisher: New York : Putnam
Published: 1873-03-25T05:00:00+00:00

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3.

Fig. 3. TvOP.KIlS^G or EXPANSIOK VALVE.

from an eccentric keyed to the main shaft, 'and is transmitted to the valve by means of the simj)le arrange-m.ent in figure 3. We \\dll state again how the steam passes to the cylinder. The top or cover of slide casing is wholly removed in our figure 1, the end of the steam pipe comes to C D, but the steam cannot pass to B B until the valve (fig. 2), being moved, will allow the steam to pass into B B, even then the steam will not enter the cylinder if the ports are covered by the valve (which is removed from the ports A A), and of which the spindle is s s ; but when this valve is shifted so as to uncover the ports, the steam has free ingress to the cylinder. By this plan it is evident that A^alve 2 will give any amount of expansion by stopping the sui:>ply of steam to valve A (removed).

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