Movable or removable closures – With means mounting closure for swinging – Pivots on opposed portal members
Patent
1982-04-26
1984-05-22
Downey, Kenneth
Movable or removable closures
With means mounting closure for swinging
Pivots on opposed portal members
49252, 49253, E05D 1500
Patent
active
044493274
DESCRIPTION:
BRIEF SUMMARY
This invention relates to a window particularly designed to be mounted in an inclined roof and comprising, in a known manner, a main frame and an intermediate frame which at its top is hinged to the main frame and is permanently urged in its opening direction, and a pane supporting sash which in the area of its horizontal centre axis is pivotally mounted in the intermediate frame and is adapted to be locked therewith at or in the vicinity of its upper edge, said sash and main frame being provided, at least in one side of the window, with associate arresting means to releasably hold the shash in a desired position.
In a known window of this type the sash comprises at its lower edge a locking member cooperating with the main frame and capable of keeping the window closed against the permanent opening stress exerted on the intermediate frame, and possibly also capable of securing the window in a slightly open position. As long as the intermediate frame and the sash are locked together at their upper edges they act as a single, top-hinged sash, but after this sash has been swung out from the main frame the upper-edge-locking may be released, subsequent to which the pane supporting sash acts as a tilting sash pivoted in the intermediate frame. In this situation the sash can thus be turned more or less a round, for instance with a view to cleaning the outer face of the pane, but it may as well be desired to fasten the sash in one or more intermediate positions, and for this purpose the said arresting means are arranged, which in the known window are constituted by a bolt mounted on a side member of the sash and adapted to engage a striker plate on the adjacent side member of the main frame. With the bolt in engagement the main frame, the intermediate frame and the sash form altogether a stable triangle so that the sash is firmly secured despite possible gust of wind or other influences.
When it is desired to transfer the sash from its closing position to its tilted position, it is thus necessary first to release the sash, at the bottom thereof, from the main frame and subsequently to release it at the top from the intermediate frame, and if it is desired to secure the sash in relation to the intermediate frame, the bolt must further be operated.
The purpose of the invention is to provide a window of the above mentioned type, but designed so that no locking mechanism is needed at the lower edge of the sash. This permits not only a simplification of the structure but also an easier handling, because only manipulations at the top edge of the sash are required.
This is achieved by the window according to the invention in that the arresting means of the sash are located in the area of the tilting axis of said sash and are adapted to automatically engage and disengage the arresting means of the main frame upon the swinging of the sash in the closing direction and in the opening direction, respectively, in relation to the intermediate frame while this intermediate frame is at least almost in its closing position in relation to the main frame.
To open the window in this case it is only required that the locking between the intermediate frame and the upper part of the sash is released and that the sash is subsequently swung as an ordinary tilting sash, until said arresting means have been mutually disengaged. The permanent stress on the intermediate frame then causes it to swing outwardly to a position of equilibrium determined beforehand, and if desired, the sash may thereupon be swung back to its basic position in relation to the intermediate frame and be relocked thereto, or it may be left in a desired angular position in relation to the intermediate frame and maintained in said position, for instance by an enhanced friction in the pivot hinge of the sash.
Also the closing of the window requires manipulations only at the upper edge of the sash. When the sash is in a suitable angle in relation to the intermediate frame it is pulled inwardly towards the main frame, until the intermediate frame is at least almost to abut
REFERENCES:
patent: 4055024 (1977-10-01), Frank
patent: 4217732 (1980-08-01), Keichstadt
Downey Kenneth
V. Kann Rasmussen Holding A/S
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