Sliding door, for a chimney, is attached to the cable from a spring-loaded drum to compensate for the door weight during movement

摘要

The door (1) of heat-resistant ceramic glass at a chimney, and the like, is supported by a cable (7) from a spring-loaded drum (6) to give compensation for its weight as it slides up and down between the open and closed positions. The drum is supported at a carrier (20), and the free end of the cable is attached to a suspension point (17) at the door frame (13) below its upper edge.