Marine door lockset

In lock mechanism for a closure member swingably mountable in a frame member including a latch bolt having a head end and a tail end and reciprocable between a latched position in which the head end portion of the bolt projects beyond an edge of the closure member to block opening movement of the closure member relative to the frame member and an unlatched position in which the head end of the bolt is retracted toward the edge of the closure member for enabling opening movement thereof, a spindle extending transversely of the direction of reciprocation of the latch bolt and means operatively connecting the spindle and the latch bolt for effecting reciprocation of the latch bolt by turning of the spindle, the latch bolt having a shoulder facing the tail end of the bolt, the improvement comprising an elongated slide bar having its length extending transversely of the path of movement of the latch bolt shoulder and transversely of the spindle, said slide bar being slidable lengthwise between a locking position in which a portion of said slide bar is disposed closely behind said bolt shoulder for blocking retraction of the bolt and an unlocked position in which said slide bar portion is offset from the path of movement of said bolt shoulder for enabling retraction of the bolt, and the spindle having means engageable with another portion of said slide bar when it is in its locking position such that said slide bar locks both the bolt against retraction and the spindle against turning.

Lock mechanism for a swinging door having a mortise in an upright edge portion thereof comprising:

• a metal casing fitable in the door mortise and having a bolt aperture in an edge thereof;
• a bolt housing of plastic material received in said casing and having a generally horizontal elongated slot aligned with said bolt aperture and a notch in a horizontal side thereof opening into said slot;
• a metal latch bolt fitted in said slot of said bolt housing and slidable therein between a latched position in which a portion of said latch bolt projects through said casing bolt aperture and an unlatched position in which said latch bolt is substantially retracted into said casing;
• and
• lock means having a portion movable through said bolt housing notch for engagement by said latch bolt when said latch bolt is in its latched position for blocking retraction of said latch bolt.

Lock mechanism for a swinging door having a mortise in an upright edge portion thereof comprising:

• a metal casing fitable in the door mortise and having a bolt aperture in an edge thereof;
• a bolt housing of plastic material received in said casing and having a generally horizontal elongated slot aligned with said bolt aperture and a notch in a horizontal side thereof opening into said slot;
• a metal latch bolt fitted in said slot of said bolt housing and slidable therein between a latched position in which a portion of said latch bolt projects through said casing bolt aperture and an unlatched position in which said latch bolt is substantially retracted into said casing, said latch bolt having an upright actuating projection;
• means biasing the latch bolt to its latched position;
• lever means engageable with said latch bolt actuating projection and movable for retracting said latch bolt to its unlatched position;
• and
• lock means having a portion movable through said bolt housing notch for engagement by said latch bolt when said latch bolt is in its latched position for blocking retraction of said latch bolt.

Lock mechanism for a swinging door having a mortise in an upright edge portion thereof comprising:

• a casing fitable in the door mortise and having a bolt aperture in an edge thereof;
• a bolt housing received in said casing and having a generally horizontal elongated slot aligned with said bolt aperture and a notch in a horizontal side thereof opening into said slot;
• a latch bolt fitted in said slot of said bolt housing and slidable therein between a latched position in which a portion of said latch bolt projects through said casing bolt aperture and an unlatched position in which said latch bolt is substantially retracted into said casing;
• and
• lock means having a portion movable through said bolt housing notch for engagement by said latch bolt when said latch bolt is in its latched position for blocking retraction of said latch bolt.

Lock mechanism for a swinging door having a mortise in an upright edge portion thereof comprising:

• a casing fitable in the door mortise and having a bolt aperture in an edge thereof;
• a bolt housing received in said casing and having a generally horizontal elongated slot aligned with said bolt aperture and a notch in a horizontal side thereof opening into said slot;
• a latch bolt fitted in said slot of said bolt housing and slidable therein between a latched position in which a portion of said latch bolt projects through said casing bolt aperture and an unlatched position in which said latch bolt is substantially retracted into said casing, said latch bolt having an upright actuating projection;
• means biasing the latch bolt to its latched position;
• lever means engageable with said latch bolt actuating projection and movable for retracting said latch bolt to its unlatched position;
• and
• lock means having a portion movable through said bolt housing notch for engagement by said latch bolt when said latch bolt is in its latched position for blocking retraction of said latch bolt.

Lock mechanism for a swinging door having a mortise in an upright edge portion thereof comprising:

• a casing fitable in the door mortise and having a bolt aperture in an edge thereof, said casing including horizontally spaced, upright side plates and separate positioning posts extending horizontally generally between said side plates, said positioning posts forming two vertically spaced, generally horizontal rows;
• a bolt housing received in said casing, said housing having a top and a bottom closely adjacent to said rows of said positioning posts, respectively, for locating said housing in said casing;
• and
• a latch bolt closely received in said bolt housing and slidable therein between a latched position in which a portion of said latch bolt projects through said casing bolt aperture and an unlatched position in which said latch bolt is substantially retracted into said housing and said casing.