B - Operations – Transporting – 65 – G
Patent
B - Operations, Transporting
65
G
198/70
B65G 43/00 (2006.01)
Patent
CA 1285237
ABSTRACT OF THE DISCLOSURE An apparatus for actuating a breakaway conveyor section includes an actuating means positioned below a lower edge of a fire door adapted to move vertically downward along an outside wall of a building to close an opening. A breakaway conveyor section is pivotally connected to an end of a fixed conveyor section outside the building and extends adjacent to an end of a fixed conveyor section inside the building and extending into the opening in the wall. The actuating means includes an actuating plate positioned below a lower edge of the fire door and pivotally connected to a pair of generally vertically extending slides by a pair of lever arms. The slides are maintained in an upper posi- tion by a pair of link arms pivotally connected to form an over-center mechanism attached between the slides and the conveyor inside the building. A lower end of the slides is slidingly attached to horizontal slides which extend through the opening in the wall to support a free end of the breakaway conveyor section. When the fire door is released, it falls, striking the actuating plate which pivots about the vertical slides to release the over-center mechanism and allows the vertical slides to drop. The falling vertical slides actuate the hori- zontal slides to retract them through the wall and allow the breakaway conveyor section free end to pivot down- wardly out of the way of the falling fire door.
560665
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