| 摘要 |
A stay arrangement 10 has a sash arm 12 and a frame track 18. The track 18 carries two carriages 20, 22 which can slide along the track 18, the first of which 20 can be constrained by a locking arrangement. A pivot linkage 23 connects the sash arm 12 to the carriage members 20, 22 so that the window is movable between a fully open position and a fully closed position, when the first carriage 20 is locked, and an alternative open position by releasing the locking arrangement, and moving at least the first carriage member 20 along the track 18. The alternative open position allows access to the outside face of the window for cleaning. Cam surfaces 68, 70 are provided in the vicinity of the second carriage 22 to engage as the sash arm 12 moves towards the closed position, at least when the first carriage 20 is away from its locked position. The engagement of the cam surfaces 68, 70 acts to drive both carriages 20, 22 along the track 18 as the sash arm 12 continues to move toward the closed position, to return the first carriage 20 to the locked position. |
