Valve arrangement with retainer bracket, for hopper car outlet gate
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United States of America Patent
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-
Aug 23, 1988
Issued Date -
N/A
app pub date -
Mar 20, 1986
filing date -
Dec 9, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A railway hopper car has a pneumatic discharge structure having a throat leading to a control tube from which lading is pneumatically withdrawn. The throat is opened and closed by valve plates supported on the ends of rods extending through bearings supported in the wall of the control tube. The rods have rack structures mounted thereon operatively engaged with pinion portions of operating shafts extending parallel to the control tube. Rotation of the operating shafts causes movement of the rods and valve plates. Retainer brackets are mounted on the rack structures and include retaining portions spaced and parallel to the rack structures. The pinion portions are supported between the rack structures and the retaining portions to maintain intermeshed engagement of the pinion portions with the rack structures. Stop portions are provided on the bracket which prevent movement of the valve plates beyond the fully open and fully closed positions.
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