Mortise Lock for Ordinary Door and Panic Door

A mortise lock comprising:

• a case (2) adapted to be mounted in a door, with the case (2) including spaced first and second sidewalls (23, 24), with the first sidewall (23) including a first arcuate slot (234), with the second sidewall (24) including a second arcuate slot (244) aligned with the first arcuate slot (234);
• a latch bolt (3) mounted in the case (2) and including a head (31) movable between an extended, latching position outside the case (2) and a retracted, unlatching position inside the case (2), with the latch bolt (3) farther including a retractor (35) mounted in the case (2) and coupled to the head (31) to move therewith, with the retractor (35) being movable between first and second positions corresponding to the extended, latching position and the retracted, unlatching position of the head (31);
• a key-operable cylinder (51) rotatably mounted to one of the first and second sidewalls (23, 24), with the cylinder (51) including an actuating plate (512);
• a follower (52) pivotably mounted in the case (2) and operably connected to and driven by the actuating plate (512), with the follower (52) being operably connected to the retractor (35) such that pivotal movement of the follower (52) in a first direction moves the retractor (35) from the first position to the second position, moving the head (31) of the latch bolt (3) from the extended, latching position to the retracted, unlatching position, with the follower (52) further including a first engaging hole (524) aligned with the first and second arcuate slots (234, 244);
• a driving rod (66) including a first end (661) pivotably mounted to one of the sidewalls (23, 24) and a second end (662) coupled to the retractor (35) such that pivotal movement of the driving rod (66) in a second direction moves the retractor (35) from the first position to the second position, moving the head (31) of the latch bolt (3) from the extended, latching position to the retracted, unlatching position;
• a hub (61) rotatably supported between the first and second sidewalls (23, 24) of the case (2), with the hub (61) including spaced first and second lugs (621, 622) extending outward from an outer periphery thereof, with the first lug (621) being operably connected to the driving rod (66) such that rotation of the hub (61) causes pivotal movement of the driving rod (66);
• a locking plate (71) mounted in the case (2) and movable between an upper, unlocking position allowing pivotal movement of the driving rod (66) and a lower, locking position not allowing pivotal movement of the second lug (622) of the driving rod (66) and thus not allowing pivotal movement of the driving rod;
• a lever link (72) mounted in the case (2) and between the first sidewall (23) and the follower (52), with the lever link (72) including a first end (721) operably connected to the locking plate (71) and a second end (722) pivotably mounted to one of the first and second sidewalls (23, 24) of the case (2) such that pivotal movement of the lever link (72) causes vertical movement of the locking plate (71) between the upper, unlocking position and the lower, locking position, with the lever link (72) further including a second engaging hole (725) aligned with the first and second arcuate slots (234, 244) and the first engaging hole (524);
• and
• a connecting member (9) selectively, removably, and slideably extended through to one of the first and second arcuate slots (234, 244) of the first and second sidewalls (23, 24),
• wherein when the connecting member (9) is slideably extended through the first arcuate slot (234) of the first sidewall (23), the connecting member (9) is extended through the second engaging hole (725) of the lever link (72) into the first engaging hole (524) of the follower (52), and the locking plate (71) is movable between the upper, unlocking position and the lower, locking position by rotation of the cylinder (51) through transmission by the lever link (72), and
• wherein when the connecting member (9) is slideably extended through the second arcuate slot (244) of the second sidewall (24), the connecting member (9) is engaged in the first engaging hole (524) and not engaged in the second engaging hole (725) of the lever link (72) such that the lever link (72) is not pivoted and the locking plate (71) is not moved when the cylinder (51) is rotated.