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Description: |
| Abstract:
In many of the slide valves used in steam engines, the valve seat on the cylinder is raised and the valve travels beyond the end of the valve seat, thus permitting the steam in the steam chest to press outwardly from the cylinder on the portion of the valve that projects over the valve seat, thus necessitating the application of a corresponding steam pressure on the outer surface of the valve in order to balance the valve.
Claim:
The combination of an engine cylinder having induction and exhaust ports, a steam chest, a valve cover, a valve under said cover, steam chambers formed on the end portions of the outer face of the valve, said engine cylinder provided with passageways extending from the sides of the induction ports outwardly and to the valve seat to provide communication between the induction ports of the cylinder and the said steam chambers when the steam chambers are adjacent to the induction ports. |
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