Mortise lock

A mortise lock comprising:

• a chassis adapted to be mounted in a mounting hole of a door, the chassis including at least one bolt;
• and
• an outside handle assembly mounted to a side of the chassis, the outside handle assembly including:
• an outside spindle including a first end partially received in the chassis and operably connected to said at least one bolt such that rotation of the outside spindle causes retraction of said at least one bolt, the outside spindle further including a second end, the first end of the outside spindle including a perimeter groove, forming a fragile portion;
• an outside handle including an end securely connected to the second end of the outside spindle to turn therewith;
• the fragile portion of the outside spindle being broken when an excessive force is applied to the outside handle;
• an inside handle assembly mounted to another side of the chassis, the inside handle assembly including:
• an inside spindle including a first end partially received in the chassis and operably connected to said at least one bolt such that rotation of the inside spindle causes retraction of said at least one bolt, the inside spindle further including a second end;
• and an inside handle including an end securely connected to the second end of the inside spindle to turn therewith;
• further comprising an inside sleeve including a first end and a second end, the first end of the inside sleeve being securely mounted around a portion of the first end of the inside spindle to turn therewith, the second end of the inside sleeve receiving the second end of the inside spindle and being securely connected to the end of the inside handle:
• the end of the inside handle including an engaging hole, the inside sleeve including a longitudinal hole and a longitudinal groove defined in an outer periphery thereof, the inside sleeve further including a positioning hole and a slot in the outer periphery of the inside sleeve, the slot being communicated with the longitudinal hole and aligned with the engaging hole of the inside handle, a tenon being mounted in inside sleeve and including a first end received in the slot of the inside sleeve and a second end having a notch, the tenon further including an opening, a resilient member being substantially U-shaped and mounted in the inside sleeve, the resilient member including a first L-shaped leg pressing against an end edge delimiting the opening of the tenon, the resilient member further including a second L-shaped leg extending through the notch of the tenon into the positioning hole of the inside sleeve, the resilient member biasing the first end of the tenon into the engaging hole of the inside handle.