Lock assembly with a removable bolt

Claim 1

A LOCK ASSEMBLY COMPRISING A LOCK CYLINDER HAVING A RECESS IN THE FORWARD END AND A TRANSVERSE PASSAGE ADJACENT THE REAR END, A TUMBLER MEANS IN THE LOCK CYLINDER, A CYLINDRICAL PLUG ROTATABLY MOUNTED IN THE CYLINDER AND HAVING A KEYWAY FOR A REQUIRED KEY TO ACTUATE THE TUMBLER MEANS AND ROTATE SAID PLUG, A PAIR OF SPACED AXIALLY OFFSET PINS EXTENDING REARWARDLY FROM THE PLUG, A GENERALLY TSHAPED REMOVABLE BOLT RECEIVED IN SAID PASSAGE AND HAVING AN ACTUATING CAMMING RECESS ON THE FRONT SIDE RECEIVING SAID SPACED PINS AND AN ELONGATED LONGITUDINALLY EXTENDING RECESS ON THE OPPOSITE SIDE OF THE BOLT, A FLAT SPRING RECEIVED IN SAID LAST MENTIONED RECESS WITH THE LOWER END OF THE SPRING ANCHORED IN THE RECESS AND THE UPPER END FREE AND BIASED OUTWARDLY OF THE BOLT, SAID PASSAGE HAVING AN OPEN LONGITUDINAL CHANNEL FACING SAID PLUG RECEIVING THE UPPER END OF THE SPRING AND TERMINATING IN A SHOULDER AT THE UPPER END OF THE CHANNEL TO ENGAGE THE UPPER END OF THE SPRING AND LIMIT MOVEMENT OF THE BOLT, SAID CYLINDER HAVING AN OPENING IN THE REAR END THEREOF ADJACENT AND BELOW SAID SHOULDER AND IN ALIGNMENT WITH THE UPPER END OF THE CHANNEL TO RECEIVE THE END OF A SMALL INSTRUMENT FOR DEPRESSING THE SPRING AND RELEASING THE BOLT.