Exterior cover enclosing hopper gate and actuating mechanism
    4.
    发明授权
    Exterior cover enclosing hopper gate and actuating mechanism 失效
    外罩封闭舷门和执行机构

    公开(公告)号:US3577932A

    公开(公告)日:1971-05-11

    申请号:US3577932D

    申请日:1969-03-25

    Applicant: ACF IND INC

    CPC classification number: B61D7/20 B65D88/74

    Abstract: A lower generally pan-shaped cover for fitting around the entire bottom discharge structure of a railway hopper car, such as a discharge structure having a gravity gate and a combination rackand-pinion drive for the gravity gate. The cover seals the entire bottom outlet structure against the entrance of foreign matter including the drive means. Means mount the cover for movement between a covering position with respect to the bottom outlet and a position removed from beneath the bottom discharge outlet to permit the discharge of lading. The cover is formed of fiber glass and resin binder to insulate the bottom discharge structure for minimizing heat losses from an insulated car. The capstans for rotating the pinion shaft are mounted for folding to an inoperative position in order for the cover to cover the drive means while remaining within clearance limits and without being of an unduly long length.

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