Sliding and swinging window stays
AssigneeInterlock Industries Limited
InventorRonald Percival Davis
Life of this patent
Estimating the term…
Abstract
A window stay for adjustable mounting of a window sash on a window frame. The stay comprises a frame mounting plate and a sash mounting plate with long and short arms joining the respective plates to one another. The ends of the longer arm are pivotally joined to the respective plates but the shorter arm is pivoted by one end to the sash plate while the other end is pivoted to a free sliding carriage on the frame plate. Means are provided so that the carriage can be locked in at least one position on the frame plate.
Claims19
A window stay for adjustable mounting of a window sash on a window frame comprising a first mounting plate adapted for attachment to the frame of a window, a second mounting plate or plates adapted for attachment to a sash of a window, a carriage freely slidably mounted on the first mounting plate, first and second arms each of which is pivoted at one end to the or a second mounting plate, the first arm being pivoted at its other end to the first mounting plate, the second arm, which is of shorter length than the first arm, being pivoted at its other end to the carriage, means to lock said carriage in at least a position where the pivot mount of the second arm to the carriage is at its greatest distance away from the pivot mount of said first arm to said first mounting plate, whereby with the stay in use a sash can be moved from a closed position in a window frame to an open position and thereupon opened further by releasing the carriage from its said locked position.
Dependencies are inferred from the claim text.