Plug door operating and moving mechanism
First Claim
1. In combination, a wall having a door opening, a plug door for said opening, means mounting said door for movement transversely of the wall between positions within and outside of said opening and longitudinally of the wall out of and into longitudinal registry with said opening, said mounting means including a track mounted on the wall generally in parallel relation therewith, a carriage riding on said track structure fixed against movement longitudinally of said door including an upright shaft rotatably journaled on the door and having a crank pivotally mounted on said carriage and rotatable by said shaft between a door closed position angular and a door open position generally parallel with respect to said wall, means for selectively rotating said shaft between door open and door closed positions, and resilient rotation-resisting means mounted on said door and engaging said shaft for maintaining said shaft in the selected door-closed and door-open rotational positions.
5 Assignments
0 Petitions
Accused Products
Abstract
Mechanism for moving plug type railway car doors transversely of the car side into and out of the door opening therein and longitudinally of the car side toward and away from the opening comprises a carriage adjacent the front of the door supporting the door directly on a mounting track and a mounting shaft adjacent the rear edge of the door supported via a crank on a track supported carriage, a longitudinal rack on the car side adjacent the door with manually actuated pinion means supported thereon and movable longitudinally thereof, operating means on the door actuable by longitudinal movement of the pinion means for unlatching the door and for rotating the door mounting shaft to move the door outwardly and inwardly, including means for automatically disconnecting the operating means from rotation-producing relation with the mounting shaft when the door is latched and when the door is being moved longitudinally of the car, and stiff resilient means for retaining the door in its selected outward and inward positions and thereby eliminating the possibility of interference betewen the door and car side during longitudinal movement of the door, into and out of registry with the door opening therein.
28 Citations
18 Claims
- 1. In combination, a wall having a door opening, a plug door for said opening, means mounting said door for movement transversely of the wall between positions within and outside of said opening and longitudinally of the wall out of and into longitudinal registry with said opening, said mounting means including a track mounted on the wall generally in parallel relation therewith, a carriage riding on said track structure fixed against movement longitudinally of said door including an upright shaft rotatably journaled on the door and having a crank pivotally mounted on said carriage and rotatable by said shaft between a door closed position angular and a door open position generally parallel with respect to said wall, means for selectively rotating said shaft between door open and door closed positions, and resilient rotation-resisting means mounted on said door and engaging said shaft for maintaining said shaft in the selected door-closed and door-open rotational positions.
- 14. In combination, a wall having a door opening, a plug door for said opening, means mounting said door for movement transversely of the wall between positions within and outside of said opening and longitudinally of the wall out of and into longitudinal registry with said opening, said mounting means including a track mounted on the wall in generally parallel relation therewith, a carriage riding on said track, an upright shaft rotatably journaled on the door and having a crank pivotally mounted on said carriage and rotatable by said shaft between a door closed position generally parallel and a door open position angular with respect to said wall, door moving means comprising first and second operating bars mounted in parallel on said door for movement lengthwise thereof, means for selectively moving said first bar, means normally interconnecting said bars to cause them to move in unison, a first lost-motion connection between said first bar and said shaft for causing said shaft to rotate in a door closing direction only when said first bar is moved forwardly with respect to said door past a predetermined position and for leaving said shaft rotationally motionless when said first bar is moved rearwardly with respect to said door, a second lost-motion connection between said second bar and said shaft for causing said shaft to rotate in a door opening direction when said second bar is moved forwardly with respect to the door to a second predetermined position rearwardly of said first predetermined position and for leaving said shaft rotationally motionless when said second bar is moved rearwardly, means responsive to forward movement of both said bars for disengaging said interconnecting means when said door is fully outwardly of the wall to permit rearward movement of said first bar into abutting engagement with the front surface of said operating shaft so as to cause rearward longitudinal opening movement of the door without corresponding rearward movement of said second bar and for permitting forward movement of said first bar into abutting engagement with the rear surface of said shaft so as to cause forward longitudinal closing movement of said door and thereafter to provide closing rotational movement of said shaft by means of the lost-motion connection between said first bar and said shaft without corresponding forward movement of the lost-motion connecting said second bar and said shaft and resultant opposing rotational movement of said shaft, said interconnecting means comprising aligned holes in both said operating bars and a locking pin extending into both said holes, said first lost-motion connection having a cam surface, said locking pin having a cam follower engageable with said cam surface when said door reaches the fully outward position with respect to the wall.
Specification