Latch with removable lock

A lock for a latch member, comprising:

• a lock barrel received within a receptacle in the latch member and axially reciprocable therein between a locking position and an unlocking position;
• a bolt receprocable in the barrel between a lock changing position and a lock maintaining position;
• a key-operated lock plug pivotable within the barrel to reciprocate the bolt;
• a stepped chamber in the latch member having a shoulder between steps, said shoulder facing forwardly with a groove therein;
• an insert at its rearward end abutting the shoulder with a rearwardly projecting tongue received in the shoulder groove, said insert further including an upstanding partition engageable with the bolt when in its lock maintaining postion to maintain the lock barrel in its locking or unlocking position, said partition being clear of the bolt when the bolt is in its lock changing position;
• and
• means engaging a forwardly facing portion of the insert for maintaining the insert within the chamber.

In a door latch of the type having a handle movable to latch and unlatch the door, a lock disposed in said handle, said lock movable to a locked position to extend from said handle to said door to lock said handle in a latched position, said lock having a bolt extending from a side of the lock to maintain the lock in said locked position, said bolt being retracted into said lock by insertion and rotation of a key in said lock to permit said lock to be withdrawn into said handle from said door to an unlocked position wherein said handle is movable to unlatch the door, the improvement comprising:

• a stepped chamber within the handle, said stepped chamber being defined by a lower shelf extending rearwardly away from the face of the handle nearest said door, a first wall upstanding from said lower shelf, an upper shelf extending rearwardly from said first wall, and a second wall upstanding from said upper shelf;
• and
• a planar insert disposed along said lower shelf and having an upstanding partition abutting said first wall and defining a first pocket to receive said bolt when extended to maintain said lock in the locked position and a second pocket to receive said bolt when extended to maintain said lock in the unlocked position, said bolt being retractable to clear said partition to permit movement of said lock between said locked and unlocked positions, said insert further including an upstanding shoulder adapted to be engaged by a plate secured to said handle face nearest the door to retain said insert in said chamber.