Lifting and unlocking gear for lift and slide window - has lever arm which pulls frame onto carriage and strikes bolt eccentric

摘要

The combined lifting and unlocking mechanism is for "lift and roll" type sliding metal framed windows and is operated via a hand lever mounted on a lower frame corner, and effects simultaneous raising of the frame into the rolling station and disengagement of a hook bolt (8) from the fixed frame post (33). The hand lever engages the square hole of a stub axle (9) which is built into the frame corner and is monolithic with a short lever arm (5) attaching via its free end to lifting linkage (6) and being arranged to strike a bolt integral pinned eccentric (10).