Lock for swivelling car park entry barrier - has spring held guide piece in arm with additional bolt hole

摘要

The car park or entry barrier incorporates a fixed bearing and an arm swinging through 90 deg., with a lengthways movable locking bolt projecting into a bolt hole set radially to the swivel axis in a curved guide face. The bearing is a ball end unit with hole following the line of the arm, lying inside the arm sheathing surface when locked. There is a guide piece in the arm directly above the bearing, with a lengthways hole for the bolt and with a compression spring holding it constantly in the locking alignment.