The present invention concerns a driver's cab of the kind indicated in the preamble of claim 1, i.e. a cab on or for working machines or vehicles such as contractor's machines and agricultural tractors, where an occurring window area with frame parts has an opening section in the shape of a sliding window arrangement with an over- and/or underlying fixed window pane section. Hereby it is to be achieved that the driver has a wide field of vision while at the same time he only has to open a limited part of the whole window area, e.g. for communication with persons outside the cab.

Additionally, the said upper and lower part of the com- plete area generally appear with frame parts having to follow special curves for design reasons, such as upper rounded cor¬ ners on the side frame of the cab or a non-horizontal course, whereby it is inappropriate to use sliding windows or window panes m these areas. The sliding panes are mounted in horizontal guide frame parts which also suitably are utilized as frame parts for the bordering edges of the upper and/or lower, fixed window pane areas. This or these frame or rail parts form transoms in an encircling keeping frame around all of the window area, and they may suitably be fastened to transoms in the cab struc¬ ture itself as also the encircling frame is fastened thereto. The cabs in question may be subjected to rather large forces m which case it is an advantage that the frame is fastened to the main frame itself. It is a common practice that the driver's cabs are manu¬ factured m special firms which in mutual competition deliver the complete cabs for mounting on the respective working ma¬ chines. On this background it is important that the costs of manufacture of the cabs are minimized, even though the single contributions to this only have a small percentage influence on the final price for the machines as a whole.

By the present invention it has been found possible to simplify and to make cheap the structure of the cab by com-

pletely omitting the provision of frame parts at the outer edges of the fixed window panes and then fastening these edge areas directly to the structural parts of the cab, preferably by glueing. It has been found realistic on that background that the fixed window pane in question then will be fastened edgewise to parts which to an appreciable degree are not mu¬ tually movable by the actions occurring on the cab, why there is no real need for a separate stabilizing window pane frame. The relationship is further qualified m that along the said pane edges it is otherwise necessary to make a window frame with a non-linear course which unavoidably creates certain complications. By the invention it is sufficient to cut the edge of the window pane to the relevant contour which has to be done anyway, though now without also forming a correspond- mg irregular frame edge part.

With respect to this the invention is characteristic by the features indicated in the characterizing part of claim 1. The invention will be explained further m the following with reference tυ the drawing, which in an exploded perspec- tive view shows an embodiment of the invention, namely in the form of a cab structure with a sideways facing window pane area comprising a lower sliding window and an upper fixed pane part, for example for use in connection with a small digging machine. The drawing shows a window for mounting in one of the chassis brackets 1. The shown window comprise a frame con¬ sisting of four sectional parts 2, 4, 6, 8 of aluminium welded together in the corners. The top section 8 has at its upper side a squeezing list 10 for fastening a fixed glass pane 12 shaped as a single piece of glass. It appears that the same section may be utilized as side and bottom sections 2-6. The squeezing list is hereby hidden in the mounting. For accommodating two sliding window panes 14 m the frame there is provided two juxtaposed grooves 16 m the sections. In or- der to ease the sliding of the sliding panes 14 the bottom edges of these are provided with a slide section 18 which also protects the edge. In a usual way there is also provided sealing strips and the sliding window panes are furnished

with handles 20 together with arresting and possibly locking devices .

At the mounting of the window area, this appears as a unity and is inserted in the aperture in the chassis bracket 1 of the cab and then fastened. The upper window pane 12 is glued to the outwardly facing side 3 of the chassis bracket 1, while the frame 2, 4, 6, 8 with the sliding panes 14 may be arbitrarily fastened, either by glueing or screwing to the side 5 of the chassis bracket 1 of the cab facing the open- mg. In order to protect the glue against sunlight the upper edge 22 of the window pane 12 is coated, and when the same colour as the chassis bracket 1 of the cab is chosen and the coating is applied m a breadth corresponding thereto, there is produced an optical effect of the window area having a fully encircling frame.

By the present invention there is thus produced a dri¬ ver's cab with a considerable facilitating of the manufacture and mounting of the window areas in question. In the above liere is locused especially on side wmaow areas, but the invention may of course also, when possible, be utilized at the ends of a cab, typically the rear end.