Mortise lock adaptation to key-removable cores

A double-ended lock cylinder adapted to be mounted through a conforming opening in a mortise lock case to provide for key operation of a bolt therein, comprising

• an elongated cylinder housing having a cylindrical barrel and a radially protruding flange extending axially of the barrel so as to fit a comforming opening having a circular portion and a narrower slot extending radially therefrom,
• core chambers formed in the opposite ends of the housing for the reception therein of key-removable cores each having a cylindrical key-plug lobe of smaller diameter than said barrel and having a laterally projecting tumbler housing,
• each such chamber including a cylindrical lobe in the barrel for the reception of the key-plug lobe of the core and having a shoulder adjacent such cylindrical lobe for engagement by a core-retaining lug,
• a bolt-actuating cam mounted in a cross slot in the barrel axially between said two chambers,
• cam-throw shuttle means mounted in said cylinder housing between said cylindrical chamber lobes for axial and rotative movement in the housing, said shuttle means including two relatively rotatable throw members, which together extend across said slot, each throw member having a driving clutch element thereon,
• said bolt-actuating cam being rotatably mounted about said shuttle means and having driven clutch means disposed for alternative engagement by the driving clutch elements of said throw members as the same are shuttled into engagement therewith,
• throw means for connecting said shuttle throw members respectively for rotation by the key plugs of cores mounted in the core chambers,
• and a shuttle actuator for each shuttle throw member positioned for engagement by a key in the key plug of a core in the adjacent chamber so that insertion of such key will shuttle the shuttle assembly so as to clutch the throw element connected to such plug to the bolt-actuating cam.

A double-ended lock cylinder adapted to be mounted through a conforming opening in a mortise lock case for key operation of a bolt therein, comprising

• an elongated cylinder housing having a cylindrical barrel and a radially protruding flange extending axially of the barrel, at least one end of such housing having a cross-sectional shape to pass through such conforming opening,
• a core chamber formed in the said end of the housing for the reception therein of a key-removable core having a key-plug therein and a tumbler housing projecting laterally relative to the key plug,
• such chamber including a portion in the barrel for the reception of the key-plug portion of the core and means adjacent such chamber lobe for engagement by key-controlled core retaining means on the core,
• a rotatable throw member mounted in said cylinder for rotative movement on the axis of the key plug of a core received in the chamber,
• a bolt-actuating cam rotatably mounted on said key plug axis and means for connecting the cam for rotation by said cam throw member, and
• throw means for connecting said shuttle throw member for rotation by the key plug of a core mounted in the core chamber,
• said core chamber being formed to receive a key-removable core in a position in which the core projects beyond the side of the cylinder housing so as to block passage of the core-containing end of the housing from passage through the conforming opening of a lock case.