Door lock

Claim 1

IN A DOOR LOCK, THE COMBINATION OF AN AXIALLY RECIPROCABLE BOLT PROJECTABLE INTO LOCKING POSITION WITH A KEEPER, MEANS NORMALLY BIASING THE BOLT TO THE PROJECTED LOCKING POSITION, INDIVIDUALLY OPERABLE INSIDE AND OUTSIDE SPINDLES FOR OPERATING SAID BOLT, SAID BOLT HAVING AN ABUTMENT THEREON, EACH SPINDLE HAVING A CAM WHICH, WHEN THE SPINDLE IS ROTATED, IS EFFECTIVE TO ENGAGE THE ABUTMENT AND RETRACT THE BOLT, AN OUTSIDE PLATE IN WHICH SAID OUTSIDE SPINDLE IS JOURNALLED, SAID OUTSIDE PLATE HAVING A GUIDEWAY THEREON, A SLIDE MOVABLE IN SAID GUIDEWAY IN A DIRECTION PARALLEL TO THE PATH OF TRAVEL OF THE BOLT, SAID OUTSIDE SPINDLE HAVING A KEY ACTUATED LOCK CYLINDER CO-AXIAL THEREWITH, SAID LOCK CYLINDER HAVING A RADIAL PROJECTION ENGAGEABLE WITH SAID SLIDE TO RECIPROCATE THE SLIDE IN THE GUIDEWAY WHEN THE CYLINDER IS KEY ACTUATED, SAID OUTSIDE CAM BEING DISPOSED AXIALLY ADJACENT SAID SLIDE AND HAVING A RECESS THEREIN, SAID SLIDE HAVING A PROJECTION NORMALLY RADIALLY ALIGNED WITH SAID RECESS IN SAID OUTSIDE CAM AND ENGAGEABLE THEREIN WHEN THE SLIDE IS ACTUATED BY SAID CYLINDER IN ONE DIRECTION TO THEREBY LOCK THE OUTSIDE CAM AGAINST ROTATION, SAID SLIDE HAVING A SECOND PROJECTION THEREON, THE INSIDE CAM HAVING A CAM EDGE THEREON ENGAGEABLE WITH SAID SECOND PROJECTION TO SHIFT THE SLIDE IN THE OPPOSITE DIRECTION OUT OF LOCKING ENGAGEMENT WITH THE OUTSIDE CAM IN RESPONSE TO ROTATION OF THE INSIDE CAM.