| 摘要 |
The sash window assembly 2 is for permitting egress from a building. The window comprises: first and second sashes 6, 8: a retaining device 10A and a frame 4. The frame includes a head 12, sill 14 and pair of jambs 16, 16. The first sash is vertically slidable with respect to the second sash. The first sash is openable to a maximum first position and the retaining device holds the sash at this maximum opening and retains against closure of the sash. The retaining device may only engage with the sash substantially in the maximum opening position and may be a magnetic means. Alternatively the retaining device may be mechanical and include a catch such as a pin catch. The second sash may also be relatively vertically slidable and tiltable. The window may also include first and second pairs of spring balances. |
