Drive bolt fitment for windows and doors has longitudinally displaceable drive bolts movable relative to adjoining bolt in one direction and with detent coupling device to block movement in other direction

摘要

The drive bolt fitment has two or more longitudinally displaceable drive bolts (8,9,10,11) connectable together through coupling devices whereby one drive bolt can move relative to the adjoining drive bolt. The coupling member has detent members which lock movement of the drive bolt in one direction and in the opposite direction has a positive locking connection such as a stop for the free end of the drive bolt. One drive bolt which has teeth is divided into at least two sections connected together through a compensating area (22).