Automatic bolt lock

Abstract

Abstract A LOCK HOUSING ON A DOOR HAVING A SLIDING SPRING PRESSED STRIKER BAR PROJECTABLE THROUGH AN OPENING IN THE OUTER EDGE OF THE HOUSING AND MOVABLE INWARDLY BY THE DOOR POST WHEN THE DOOR IS CLOSED. REARWARDLY OF THE STRIKING BAR WITHIN THE LOCK HOUSING IS A PIVOTED SEAR HAVING SPACED DEPENDING FORWARD AND REARWARD ARMS. THE FORWARD ARM IS ADJACENT THE INNER END OF THE STRIKING BAR AND IS ENGAGED THEREBY WHEN THE LATTER IS DEPRESSED. THE REARWARD BARM ENGAGES A ROTATABLE CAM AND FUNCTIONS TO PREVENT ROTATION THEREOF. THE CAM IS FITTED TO A KEY SLIT AND CAN BE ROTATED BY TURNING IF THE KEY INSERTED INTO THE KEY SLOT. A SPRING MEMBER WITHIN THE LOCK HOUSING ACTS ON THE CAM TO ROTATE THE SAME COUNTERCLOCKWISE. A SLIDABLE LOCK BOLT WITHIN THE LOCK HOUSING IS PROJECTABLE THROUGH THE SAME EDGE OF THE LOCK HOUSING AND A LINK IS PIVOTALLY CONNECTED AT ITS ENDS TI THE CAM AND THE LOCK BOLT. INWARD DEPRESSIONN OF THE STRIKER BAR WHEN THE DOOR IS CLOSED WILL ACTIVE THE SEAR SUCH THAT ITS REARWARD ARM WILL DISENGAGE FROM THE CAM ALLOWING THE SPRING MEMBER TO ROTATE THE SAME COUNTERCLOCKWISE WHEREIN SUCH MOVEMENT WILL THROUGH THE CONNECTING LINK CAUSE THE LOCK BOLT TO MOVE OUTWARDLY OF THE LOCK HOUSING INTO LOCKING ENGAGEMENT WITH THE DOOR FRAME. A SPRING ENGAGES THE SEAR TO HOLD ITS REARWARD ARM IN LOCKING CONNECTION TO THE CAM WHEN THE LOCK IS OPEN AND A STOP MEANS ON THE CAM FUNCTIONS TO LIMIT ROTATION OF THE CAM WHEN THE LOCK BOLT IS WHOLLY PROJECTED OUTWARDLY IN ITS LOCKED POSITION.

Inventors

• 👤 John N Klein

Bibliographic Details