BRIEF DESCRIPTION OF THE DRAWINGS
The detailed description particularly refers to the accompanying figures in which:
FIG. 1 is a perspective view of a heavy duty door handle and lock apparatus according to this disclosure and a portion of a door to which the door handle and lock apparatus is coupled, the door handle and lock apparatus having a mortise lock cylinder and a C-shaped handle that is movable horizontally in a direction parallel with the door, as indicated by a first double arrow, to retract a latch of the apparatus, as indicated by a second double arrow, when the mortise lock cylinder is in an unlocking position;
FIG. 2 is a perspective view, similar to FIG. 1, showing the door handle and lock apparatus arranged for insertion into a cutout formed in the door, the door handle and lock apparatus having a housing which includes first and second side walls that define upper and lower channels in which portions of the door above and below the cutout are trapped when the apparatus is coupled, the housing having a side wall extending between the first and second walls, the door having notches adjacent the cutout to receive upper and lower portions of the side wall of the housing, and the side wall of the housing having first and second holes through which screws extend to secure the apparatus to the door;
FIG. 3 is an exploded perspective view of the door handle and lock apparatus, with portions broken away, showing the apparatus having a chassis with a generally vertical segment to which a latch bolt assembly couples, first and second plates that are retained for horizontal sliding movement between upper and lower generally horizontal segments of the chassis, the first and second handles being associated with respective first and second plates, and first and second retractor hooks that are associated with the first and second plates;
FIG. 4 is an enlarged perspective view of a portion of the door handle and lock apparatus showing the first and second retractor hooks in respective downward positions relative to the first and second plates so as to hook onto respective portions of a cross pin of the latch bolt assembly;
FIG. 5 is an enlarged perspective view, similar to FIG. 4, showing the mortise lock cylinder moved to a locking position having a cam of the mortise lock cylinder lifting one of the retractor hooks, but not the other, off of the cross pin such that movement of the associated plate to the dotted line position does not result in retraction of the latch of the latch bolt assembly;
FIG. 6 is a cross sectional view, taken along line 6-6 of FIG. 2, showing the first and second handles coupled to respective first and second plates and extending in opposite directions from the housing;
FIG. 7 is a cross sectional view, similar to FIG. 6, showing a user moving a first handles to retract the latch, the first and second handles and the associated first and second plates being movable independently such that the second handle remains stationary when the first handle is moved;
FIG. 8 is an enlarged perspective view, with portions broken away, of an alternative embodiment having a rotatable handle that is movable to rotate a gear which interfaces with a rack mounted to the associated plate to slide the plate relative to the chassis; and
FIG. 9 is a cross sectional view, taken along line 9-9 of FIG. 8, showing a shaft extending between the rotatable handle lever and the gear having a weakened neck down portion that is configured to shear or fracture in the event of an attempted forced entry.