Abstract: A flush bolt mechanism for use in connection with a pair of swingable doors to provide latch bolt engagement between the free ends of those doors. The flush bolt mechanism includes a generally flat frame or plate adapted to be mounted on a flat frame or plate adapted to be mounted flush on one of the free ends of the swingable doors, and a support bracket mounted on the back thereof. The support bracket provides a means for mounting an adjustment bracket thereon in reciprocal position thereon. A trigger mechanism is also mounted in reciprocal position on the support bracket so as to extend through the flush mounted plate. The trigger mechanism and the adjustment bracket are mounted on the flat plate and the support bracket to be reciprocally moved toward the plate and away from the plate in continuous adjustment to provide for adjusting the extended position of the trigger means mounted on the adjustment bracket.

Abstract: A push/pull door latch is disclosed with pivotal handles, both having a foot portion for operating respective eccentric portions of a crank-shaped actuator to retract a latch bolt, the handles also having stop portions for contacting portions of a base member to define a range of motion of the handles.

Abstract: Method and apparatus for mounting a push/pull handle on a latch mechanism is disclosed. Recently, it has become desirable for large medical service facilities, such as hospitals, to change their door latch mechanisms from rotatable lever handles to push/pull handles. The apparatus comprises a pair of mating adapter plates mountable on either side of a door outwardly adjacent a mortise lock presently mounted in the door. The adapter plates include a plurality of pairs of aligned apertures, each of the several pairs of which are adapted to align with a pair of apertures which differing lock manufacturers position in differing radial and arcuate positions with respect to a mortise operating key. The adapter plates fasten through the mortise to the respective door sides and allow push/pull type handle assemblies to be mounted on the adapter plates so as to be operatively connected through the mortise operating key.