Abstract: A door is of the type wherein the weight of the door causes locking thereof against a door frame. The door frame is of the type having extending outwardly therefrom vertically spaced pairs of support hooks for supporting the door. The door includes a door element adapted to be sealed against the door frame. A pair of vertically spaced horizontally extending locking bars are carried by the door element. Each locking bar has opposite round ends adapted to rest on and be held by a respective pair of support hooks. A pair of locking support members, one each associated with a respective locking bar, are mounted for vertical sliding movement along the door element. Each locking bar is pivotally connected to the respective locking support member about a respective horizontal axis such that upon positioning the locking bars on the respective hooks, the weight of the door will cause the locking bars to pivot about the respective pivot axes in directions away from the door element.

Abstract: A support is pivoted to a frame and supports a first hydraulic drive for actuating movable jaws to engage removing latches of a door to be removed. The support also supports a separate second hydraulic drive for locking or unlocking a door locking device of the door. A separate third hydraulic drive is connected between the frame and the support for pivoting the support and a removed door suspended thereby with respect to the frame.

Abstract: A sealing frame includes a flexible metallic profiled bar having a bent transverse cross section formed by a longitudinally extending apex joining longitudinally extending arms. Attachment bolts extend through the bar at the apex and are threaded into a coke-oven door element. Tightening of the bolts stretches the bar by increasing the angle of the apex.

Abstract: A door closure includes a spring bearing member on a door body. A spring is positioned in the spring bearing member and urges a locking bar and locking bar support outwardly thereof into locking engagement with locking hooks. The spring bearing member is movable along the door body. A lever system is pivoted on the door body from a first position wherein the spring urges the locking bar into engagement with the locking hooks to a second position wherein the locking bar is out of engagement with and longitudinally spaced from the locking hooks.