Patent ID: 8201858

Claim:
A reversibly handed mortise lock comprising: a. a first spindle base journaled for rotation within a mortise housing and engaged for rotation with a mortise lock spindle; b. a second spindle base, coaxially aligned with the first spindle base, the second spindle base also being journaled for rotation within the mortise housing; c. a locking collar adapted to slide laterally between first and second positions over the first and second spindle bases, in the first position the locking collar interlocking only the first spindle base, and in the second position interlocking only the second spindle base, and d. a stopworks operable to be actuated between locking and unlocking configurations, the stopworks mechanically interfering with and preventing rotation of the connection of the locking collar and the corresponding spindle base to which it is interlocked at that moment, when the stopworks is in a locking configuration for preventing rotation of the spindle.