| 摘要 |
This invention relates to a three-bar hinge incorporating a window restrictor, and in particular to a three-bar hinge for a top swing fully reversible window. The three-bar hinge (10) comprises a mounting such as a pivot peg (14) for a window panel (1), a first bar or stay (16) carrying the mounting (14), a slider (20) to which the first bar is connected and guide means such as a channel (12) for the slider. Opening movement of the window panel causes movement of the slider (20) along the guide means (12) in use. The guide means (12) and slider (20) have cooperating parts (40, 42) which define a restricted position for the slider, and the hinge has a key-operated locking means (56, 66) adapted to prevent movement of the slider beyond its restricted position.
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