Valve arrangement with retainer bracket, for hopper car outlet g

Details Valve arrangement with retainer bracket, for hopper car outlet g Valve arrangement with retainer bracket, for hopper car outlet g

1986-03-20

1988-08-23

Reeves, Robert B.

Dispensing

With relatively movable actuator for outlet element

74422, 222561, 1052823, 105305, B61D 726, B61D 720, B65D 4720, B65D 9060

Patent

active

047655178

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car has a pneumatic discharge structure having a throat leading to a control tube from which lading is pneumatically withdrawn.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.

REFERENCES:
patent: 881857 (1908-03-01), Harrington
patent: 1604843 (1926-10-01), Lloyd
patent: 2386702 (1945-10-01), McBride
patent: 2517534 (1950-08-01), Courtot
patent: 3066618 (1962-12-01), Gunnison
patent: 3348501 (1967-10-01), Stevens et al.
patent: 3693846 (1972-09-01), Schuller
patent: 4027921 (1977-06-01), Adler et al.
patent: 4214536 (1980-07-01), Waddell et al.
patent: 4317532 (1982-03-01), Przybylinski
patent: 4560132 (1985-12-01), Wilder

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