Locking confinement door movement

A transport and locking mechanism for mounting in a cabinet above a prison door adjacent a prison cell for transporting and locking the prison door, the transport and locking mechanism comprising:

• a support frame adapted to be mounted within the cabinet;
• a movable carriage mounted to the support frame for reciprocating motion relative to the support frame;
• a drop bar extending downwardly toward the floor of the prison and being movable between a raised unlocked position and a lowered lock position in which a lower portion of the drop bar is secured adjacent the floor of the prison;
• and
• an upper lock including an upper lock bar movable between a first locked position securing the movable carriage to the support frame and a second unlocked position allowing relative motion between the movable carriage and the support frame, the upper lock not being visible or accessible to a prisoner, but instead being concealed within the cabinet.

A transport and locking mechanism for mounting in a cabinet above a prison door adjacent a prison cell for transporting and locking the prison door, the transport and locking mechanism comprising:

• a support frame;
• a movable carriage mounted to the support frame for reciprocating motion relative to the support frame and for bearing the door therealong;
• one or more locks movable between locked and unlocked positions for securing the door in place;
• a cam bar mounted for reciprocating motion relative to the support frame for moving the one or more locks between their locked and unlocked positions;
• wherein the cam bar is coupled to the movable carriage in such a way that for a portion of the motion of the cam bar the cam bar and the movable carriage move together, and for some other portion of the motion of the cam bar, the cam bar continues its motion while the movable carriage remains stationary, and wherein motion of the cam bar while the movable carriage is stationary causes the locking and unlocking of the one or more locks;
• and
• wherein the cam bar is coupled to the movable carriage via a timing mechanism comprising a timing link arm pivotally coupled to the movable carriage and selectively coupled to the cam bar and
• wherein the timing mechanism includes a timing cam and a timing link roller mounted to the timing link arm and following the timing cam, wherein the timing link roller rides along the timing cam and at one or more selected locations allows the timing link arm to rotate out of engagement with the cam bar to decouple the timing link arm from the cam bar.