Bridges
Patent
1983-11-09
1985-03-12
Smith, James G.
Bridges
B25B 2900
Patent
active
045038970
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a tool intended to facilitate the fitting of window frames, door frames and similar structures to wall openings intended therefor.
When fitting window and door frames into their respective openings, the frames are normally screwed into the material defining the frame-opening, as a final stage in the securing of the frame. In this respect, it is necessary that the frame is precisely fitted into the opening, before screwing the screws into the opening-defining surfaces, since, otherwise, the opening and closing functions of the window or door may be impaired. The task of placing and positioning a frame in its allotted opening is, today, both relatively time consuming and difficult, and may also be hazardous, especially when fitting windows into high-rise buildings. When fitting, for example, so-called H-windows, which when opened must be swung outwardly about a horizontal axis, it is necessary to open the window in order to fix the frame, which subjects the frame to a heavy outwardly-directed load. Neither is there any practical way of testing whether or not, for example, a window can be opened, prior to finally securing the frame in position in said opening.
In order to facilitate the work of fitting a window or door frame, it is normal in present day methods to nail into the window-frame opening a number of blocks against which the frame is subsequently pressed when fitted into the opening. The work involved in positioning and securing the blocks, however, is both tedious and relatively difficult and, as with the fitting of the frame, may also be dangerous when concerned with large frame-openings situated at high level. Moreover, it is difficult to make fine adjustments to the positions of blocks which have been finally secured.
The main object of the invention is to provide a tool which facilitates the fitting of window frames and door frames in their correct positions in a respective opening, prior to fixing the frame in said positions, while circumventing the aforementioned disadvantages, and which, inter alia enables the opening function of the window or door to be tested prior to the frame being finally secured.
These objects are achieved by means of a tool which includes a part arranged to abut the inner wall surrounding said opening, and optionally also to be temporarily secured thereto, and a part which is arranged to be secured to the frame, said tool parts being arranged to be temporarily locked one to the other.
The tool according to the invention is particularly characterized in that it comprises two parts, of which one of said parts is angular in shape, having a first leg which is arranged to be secured temporarily to the inside of the wall adjacent said opening, in that the second tool part has the form of an elongate, flexible, but not stretchable element arranged to be permanently secured at one end thereof to the surface of the frame facing the opening-defining surface; and in that the other end of the elongate element and the second leg of the angular tool part are arranged to be temporarily locked to each other.
Thus, the frame can be secured in a desired position in the opening, by securing the elongate element to the frame at various distances from the front edge of said frame.
In a preferred embodiment, the elongate element may comprise a relatively rigid metal tongue, which is provided at one end with a slot-like groove, and the said second leg of the angular tool part is provided with fixing means arranged to co-act with said slot-like groove. This embodiment enables, among other things, subsequent adjustment of the position of the frame in the opening, which adjustment may be necessary, for example, when the wall is not true.
Preferably, the aforementioned fixing means includes a screw provided with a locking knob, and the groove is provided with a recess which serves as a reference position for the screw. In this case the metal tongue may be provided with a setting scale, with said recess as a reference point. This scale may be used when fixing the
REFERENCES:
patent: 3456702 (1969-07-01), Johnson
Smith James G.
Zatarga J. T.
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