Door locking and actuating mechanism for hopper car
First Claim
1. A railway hopper car having an underframe,a hopper structure supported on said underframe,walls on said hopper structure defining at their lower ends a discharge opening,a pair of doors pivotably connected to said hopper structure for outward movement from a closed position below said discharge opening to an open position, the improvement of a door actuating and locking arrangement comprising:
- a pair of arms each pivotally connected to said car on opposite sides of said discharge opening,each of said arms including a cam follower supported thereon,a pair of actuating links each pivotally connected to one of said arms and to one of said doors,each of said doors having inner longitudinal nose portions sealingly engaging each other in the closed position of said doors,a locking mechanism including keeper means mounted on one end of one of said doors and overlapping an end of said other door,a latch member slidingly mounted on said other door,means biasing said latch member into locking engagement with said keeper means in the closed position of said doors, andsaid latch member operatively connected with said actuating link whereby during engagement of said cam with an associated door opening mechanism, said arm and actuating link are pivoted outwardly and said latch member and keeper means are disengaged whereby said doors are moved to said open position.
1 Assignment
0 Petitions
Accused Products
Abstract
A locking and actuating mechanism for a pair of horizontally movable hopper doors includes an arm and actuating linkage which engages a track side cam for moving the doors between open and closed positions. One of the doors includes a keeper which is engageable by a latch mechanism in the other door. The latch mechanism includes a linkage arrangement which is connected to the actuating link and arm by means of a lost motion connection.
14 Citations
20 Claims
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1. A railway hopper car having an underframe,
a hopper structure supported on said underframe, walls on said hopper structure defining at their lower ends a discharge opening, a pair of doors pivotably connected to said hopper structure for outward movement from a closed position below said discharge opening to an open position, the improvement of a door actuating and locking arrangement comprising: -
a pair of arms each pivotally connected to said car on opposite sides of said discharge opening, each of said arms including a cam follower supported thereon, a pair of actuating links each pivotally connected to one of said arms and to one of said doors, each of said doors having inner longitudinal nose portions sealingly engaging each other in the closed position of said doors, a locking mechanism including keeper means mounted on one end of one of said doors and overlapping an end of said other door, a latch member slidingly mounted on said other door, means biasing said latch member into locking engagement with said keeper means in the closed position of said doors, and said latch member operatively connected with said actuating link whereby during engagement of said cam with an associated door opening mechanism, said arm and actuating link are pivoted outwardly and said latch member and keeper means are disengaged whereby said doors are moved to said open position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A railway hopper car having a hopper structure including a discharge opening at its lower end, a pair of doors pivotally connected with said hopper structure for movement from a closed position below said discharge opening to an open position away from said discharge opening, the improvement of a door actuating and locking arrangement comprising:
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arm means pivotally connected to opposite sides of said hopper car and to each of said doors, a locking mechanism carried by said doors including a latch means movably mounted on one of said doors and a keeper means mounted on the other of said doors adapted to be engaged by said latch means in the closed position of said doors, and said latch means operatively connected with said arm means, whereby pivoted movement of said arm means by an associated door opening mechanism disengages said latch means and said keeper means and moves said doors to said open position. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification