Reversible mortise lock

The reversible mortise lock of claim wherein each spindle hub has a radiused female formation, the mechanism comprising:

• a contact member having a bore therethrough and a radiused male formation for contacting the radiused female formations of the spindle hubs;
• a guide slidably disposed within the bore of the contact member, the guide having an end pivotally attached to the casing;
• and
• a spring interposed between the contact member and the casing to urge the spindle hubs in a direction opposite the direction in which the spindle hubs pivot.

A reversible mortise lock comprising:

• a casing having a front plate for confronting a door frame and having a pair of opposed sidewalls, the front plate having an opening;
• a latch bolt movable with respect to the casing between an extended position and a retracted position, the latch bolt projecting from the casing through the front plate opening when the latch bolt is in the extended position, the latch bolt being substantially completely withdrawn into the casing when the latch bolt is in the retracted position, the latch bolt being rotatable to a first orientation and to a second orientation;
• a pair of spindle hubs disposed within the casing, each of which being independently pivotable about a fixed axis and having a slot, the latch bolt moving from the extended position to the retracted position in response to pivotal movement of either spindle hub;
• an interfering member disposed within and accessible from outside the casing and having a portion thereof sized for insertion into the spindle hub slots, the interfering member being pivotable to a first position corresponding to the first orientation of the latch bolt that allows only one of the hubs to pivot and to a second position corresponding to the second orientation of the latch bolt that allows only the other hub to pivot;
• a guard bolt movable with respect to the casing between an extended position and a depressed position, the latch bolt being prevented from being depressed into the casing when the guard bolt is depressed;
• and
• a guard bolt guide, the guard bolt being pivotally attached to the guard bolt guide and pivotable between a first position corresponding to the first orientation of the latch bolt and a second position corresponding to the second orientation of the latch bolt, the guard bolt including an engagement surface having a pair of female formations separated by a ridge formation and the guard bolt guide including a male formation sized for insertion into the female formations, the male formation being inserted into one of the female formations when the latch bolt is pivoted to its first position, the male formation being inserted into the other female formation when the latch bolt is pivoted to its second position.

A reversible mortise lock comprising:

• a casing having a front plate for confronting a door frame and having a pair of opposed sidewalls, the front plate having an opening;
• a latch bolt movable with respect to the casing between an extended position and a retracted position, the latch bolt projecting from the casing through the front plate opening when the latch bolt is in the extended position, the latch bolt being substantially completely withdrawn into the casing when the latch bolt is in the retracted position, the latch bolt being rotatable to a first orientation and to a second orientation;
• a pair of spindle hubs disposed within the casing, each of which being independently pivotable about a fixed axis and having a slot, the latch bolt moving from the extended position to the retracted position in response to pivotal movement of either spindle hub;
• and
• an interfering member disposed within and accessible from outside the casing and having a portion thereof sized for insertion into the spindle hub slots, the interfering member being pivotable to a first position corresponding to the first orientation of the latch bolt that allows only one of the hubs to pivot and to a second position corresponding to the second orientation of the latch bolt that allows only the other hub to pivot, the interfering member also being pivotal to a third position wherein the portion of the interfering member is positioned within both spindle hub slots to prevent pivotal movement of the hubs.