of spring 24 and follower ballbearing 150 and slidebolt 12 is extended to its locked position as illustrated in fig1 any attempted movement to withdraw or force slidebolt 12 inwardly of lock casing 14 by operation of a boltwork not shown will result in jamming latch 210 into stop surface 220 preventing slidebolt movement such interference between latch 210 and stop surface 220 will act effectively through pin 212 to prevent any further movement of slidebolt 12 from its extended locking position to its retracted unlocking position in order to permit retraction of slidebolt 12 illustrated in fig1 solenoid 200 must be actuated connector harness 224 is an assembly providing a path for electrical energy from a conventional electrical control not shown to solenoid 200 the magnetic field of the energized solenoid 100 attracts solenoid plate 206 and consequently withdraws or retracts solenoid armature shaft 204 into solenoid 200 upon attraction of plate 206 toward solenoid 200 solenoid plate 206 will engage with and cam latch 210 in a clockwise direction around pin 212 against the force exerted by follower ballbearing 150 and spring 24 the rotational or pivoting motion of latch 210 will displace distal end 230 of latch 210 away from stop surface 220 and subsequently permit relative movement of latch 210 pin 212 and slidebolt 12 upward and to the left allowing withdrawal of slidebolt 12 into lock casing 14.