The present invention relates to a pivot for windows, doors or the like, comprising a pivot handle, which is adapted to be fastened to a window casement, a door leaf or the like, and which is rotatably mounted on same about a shaft journal, and an actu¬ ating member, which is connected to the pivot handle, and which is readjustable by means of the pivot handle between two opposite outer positions, together with a bar member, which is readjust¬ able by means of the actuating member between an inactive posi¬ tion which permits free and unhindered movement of the window casement, the door leaf or the like, and an active position which ensures closing off of same relative to a window frame, door frame or the like, the bar member of the pivot being pivotably mounted about an axis which extends parallel to the main plane of the window, door or the like and being pivotable in a pivotal plane which extends across the axial direction of the shaft journal of the pivot handle and having a support surface which forms a rebate directly against a rabbet surface on the window frame, door frame or the like, while the pivot handle with asso¬ ciated actuating member and the bar member are pivotably mounted separately on one and the same anchor fitting for fastening of the pivot to the window casement, the door leaf or the like.

The present invention finds special application in connec¬ tion with a window and shall be particularly described in the following in connection with a window, but also finds application in connection with other openable and recloseable constructions, such as a door (pivotable door leaf, door leaf for sliding doors, and the like) .

With the present invention the aim is a particularly simple pivot which can be fastened in a simple and ready manner to its support means (window casement, door leaf or the like) and which has a construction which is simple, robust and demands little space and which in addition does not require special local arrangements in the component (window frame, door frame or the like) which surrounds the support means. A particular objective is a pivot which can be fastened at largely arbitrary locations along the periphery of the support means without having to employ a normal end piece or having to form special rabbet members at equivalent local locations on the component (window frame, door frame or the like) which surrounds the support means.

This is achieved according to the invention in that the bar member is pivotable from inactive to active position against the force of a spring by pressure actuation from the actuating member of the pivot handle, and that the actuating member, which is rigidly connected to the pivot handle, is pivotable in a path which crosses the pivotal plane of the bar member.

When the pivot assumes its inactive position, the bar member is adapted to be pivoted outwards and upwards towards the shaft journal of the handle parallel to the actuating member, and by rotating the handle of the pivot, and thereby equivalently rotating the actuating member, the bar member of the actuating member is positively guided against the force of the compression spring of the bar member towards the active closed position of the bar member. During this positive guiding the actuating member is driven as an eccentric member or wedge member in a pivotal movement across the pivotal movement of the bar member and adjusts the bar member gradually and according to need into an equivalent, self-locking closed position relative to the surrounding component (window frame, door frame or the like) . In

practice the bar member can form a rebate directly on a rabbet surface of the window frame, the window casement or the like facing inwardly into the space lying within, without special fashioning of said rabbet surface. Alternatively a separate rabbet member can be fastened to the frame, where this had to be required.

By the proposed solution one achieves for one thing that the pivot draws the support means (the window casement, door leaf or the like) to a stronger degree than a conventional pivot against the rabbet ledge of the window casement or the door leaf in the window frame or the door frame. The window casement or the door leaf does not need thus to be drawn hard against the rabbet ledge before one turns the handle for locking. The pivot can via the bar member form a rebate against the frame even at a distance of for example 15 mm between window casement or door leaf and -frame, and in such cases the window casement or the door leaf can be drawn into place with a relatively large force by a moderate actuating force.

It must also be pointed out - concerning windows - that by using the present pivot a lateral displacement of the casement is avoided when the window is closed. Said lateral displacement can be a problem with conventional pivots.

Further features of the invention will be evident from the following description having regard to the accompanying drawings, in which:

Fig. 1 and 2 show in part and in cross-section and in side elevation, a portion of a window casement and a portion of a window frame with the pivot according to the invention illu¬ strated in the inactive condition.

Fig. 3-5 show similarly in part and in cross-section, side elevation and plan elevation, a portion of window casement and a portion of window frame with the pivot according to the invention illustrated in the active closed position.

Fig. 6 and 7 show the pivot according to Fig. 1-5 applied in a window frame different from that which is illustrated in Fig. 1-5, where Fig. 6 shows the pivot in the inactive position and fig. 7 shows the pivot in the active locking position.

In the drawing there is shown in part a portion of a window frame 10 and a portion of a window casement 11, which in the illustrated preferred embodiment are fashioned from plastic (PVC plastic), but which in practice can be also made of another suit¬ able material (wood, metal or the like) .

The window frame 10 is shown with a window rabbet 12 and an associated rabbet ledge 13 which forms a rebate for the window casement 11 in the window rabbet 12.

The window casement 11 is shown with a window ledge 14 and an oppositely disposed, easily mountable and dismountable glass strip 15. On the side of the window casement, which faces towards the space A present within, that is to say on the side which shows the glass strip 15 and which pushes up to the rabbet ledge 13 on the window frame 10, there is fastened a pivot mounting 16 having fastening screws 17 directly to the window casement. To each window casement there can be fastened - at arbitrary locations of its periphery - one or more pivots as required. The pivot mounting 16 has small length and breadth dimensions and can be readily fitted in between the glass strip of the window case¬ ment and the rabbet of the window casement 11 towards rabbet ledge 13 of the window frame. The pivot mounting 16 is shown with a substantially L-shaped cross-section, that is to say with a longest L-leg 16a which forms a fastening against the window casement 11 and a shortest L-leg 16b which projects endways outwards from the window casement. However the pivot mounting can have other forms, for example it can be designed with a largely uniformly thick plate shape.

To L-leg 16a of the pivot mounting there is fastened a shaft journal 18 which carries a pivot handle 19 rotatably mounted about an axis 18a which extends at right angles to the L-leg 16a and the adjacent side of the window casement 11. The handle 19 has a handle portion 19a which projects a considerable distance laterally outside the shaft journal 18. From the handle 19 an actuating member 20 which is rigidly connected to the handle 19 and which is preferably fashioned in one piece with the handle projects a distance laterally from the shaft journal 18 at an angle of 90° relative to the handle portion 19a.

To L-leg 16b of the pivot mounting a plate-shaped bar member 22 is pivotably mounted about a shaft journal 21 which passes through the outer end of the L-leg 16b. The bar member 22 projects with its rear portion 22a inwardly into a cavity 23 in the L-leg 16b. As indicated by broken lines 24a and 24b in ^' Fig. 1 there are shown opposite ends of a leaf spring or a similar compression spring 24. By means of the compression spring 24 the bar member 22 is adjusted into an outwardly directed inactive position when the actuating member 20 and the associated handle 19 assume their inactive position.

By rotating the handle 19 from the position shown in Fig. 1 to the position shown in Fig. 3 the bar member 22 is positively guided correspondingly against the force of the spring 24 from the position shown in Fig. 1 to the position shown in Fig. 3. By this the bar member 22 with a support surface 25 will gradually bear against a flat rabbet surface 26 on the side of rabbet ledge 13 of the window frame 10 which faces towards space A lying within. Support surface 25 of the bar member 22 is restricted to a narrow region at the outer end 22b of the bar member 22, there being fashioned a concave cavity 26 just inside the support surface 25. Similarly the actuating member 20 is provided at the outer end 20a with a narrow, convexly curved actuating surface 28, which forms an abutment against the rear side surface of the bar member 22 in a sliding abutment against this. The surface 28 is restricted by means of an inwardly lying cavity 29 in the actuating member 20.

According to the invention a self-locking (angle-) position of the actuating member is achieved relative to the bar member in various pivotal angle positions from the starting position of Fig. 1. This means that one can close off the window casement relative to the window frame even in instances where the window casement is not drawn tightly against the rabbet ledge of the window rabbet on the window frame. First when the handle portion 19a is rotated 90° relative to the starting position as shown in Fig. 1 it is assumed that a rebate is formed between window casement and window frame in the window rabbet. By employing two or more pivots the window casement can be gradually tightened in

place in the final position, as shown in Fig. 3,■ by pressing the different pivots in turn and in stages angularly towards their end positions. This is made possible by the self-clamping or self-locking adjustment of the actuating member relative to the bar member. Even with "slow" windows one has the possibility in such instances of tightening the window casement in place in the window rabbet in a gentle manner for the window casement and the window frame. If there should be a need for it, it is relatively easy to mount an extra pivot in place in addition to one or more original pivots on the window casement, without extra arrange¬ ments in the window frame.

In an alternative embodiment, which is not illustrated further herein, frame and casement can be aligned with each other on the side which faces inwardly towards the space lying within, when the window assumes its closed position. By this the bar member can form a support directly against the inwardly facing surface of the frame. This is of particular interest in cases where the frame (and casement) are made of a wear-resistant material, such as plastic, aluminium etc., while with a frame (and casement) made of wood it is preferred to use a separate, wear firm rabbet member fastened to the frame for support of the bar member.

In Fig. 6 and 7 there is shown a window frame 10' and a window casement 11' made of wood. There is shown a pivot which is fashioned substantially similarly as shown in Fig. 1-5. The pivot is fastened with a mounting 16' via fastening screws 17' (shown with chain lines) to one side surface 11a' of the window casement 11', which faces inwardly towards a space A' lying within. On a top surface 13a' on a rabbet ledge 13' on the window frame 10' a locking member 31 which projects inwardly into the clear width of the window frame and which forms a stop for bar member 22' of the pivot is fastened with screws 30 (shown with chain lines). As is evident from Fig. 6 and 7, the pivot with associated bar member 22' is arranged in the closed condition of the window between the main plane of the casement, which faces towards the space A' lying within, and the main plane of the frame, which faces

towards the space A' lying within. The innermost-lying surface 31a of the locking member 31 is terminated parallel to and at a small distance from the adjacent inner surface of the casement.

The locking member 31 is designed with a substantially L-shaped cross-section, such as shown in Fig. 6. One L-leg 31a of the locking member 31 is fastened with two screws 30 to said top surface 13a', that is to say with a screw on each side of a central cavity 32, which pass through the locking member 31 in the transition between two L legs 31a and 31b of the locking member. The L-leg 31b consequently forms a bow-shaped portion at the inner end of the locking member. An inwardly facing surface 33a of a cross web 33 of the bow-shaped portion of the L-leg forms a stop for bar member 22' of the pivot in the active locking position of the pivot, such as shown in Fig. 7.

The mounting 16' is fastened at a level above the top surface 13a' of the rabbet ledge 13' of the window frame 10', so that when the window casement is pivoted outwards and inwards relative to the window frame, the pivot moves in its inactive position (Fig. 6) unhindered past the locking member 31.

In a similar manner as described above locking bar 22' of the pivot is rotated against the force of a torsion spring 24', from the position shown in Fig. 6 to the position shown in Fig. 7. The reverse occurs on rotating handle 19' of the pivot about its pivotal axis 18a', an actuating member 20', which projects radially outwards from the pivot handle 19' , positively guiding the locking bar 22', by its pivotal movement relative to the locking bar 22' into supporting abutment against the cross web 31b' of the locking member 31. The window casement is thereby locked in place in a closed position relative to the window frame.

Immediately the handle 19' is rotated from the position which is shown in Fig. 7 to the position which is shown in Fig. 6, the bar member 22' is adjusted back to the illustrated inactive position (Fig. 6) by means of the spring (see Fig. 1). By a grip about the handle 19' the window can be opened and closed by a pushing movement exerted in the direction of the

arrow B and in addition the window can be closed-off or relaased relative to the locking member 31, still by a grip about the handle 19', by a rotation of the handle about the axis 18a'.

By rotating the bar member from the position shown in fig. 6 to the position shown in Fig. 7 the handle 19' and the actuating member 20' can be rotated about a first horizontal axis 18a' and thereby the bar member can be positively rotated about a second horizontal axis 21a' which extends in a direction across the axis 18a at a certain distance from the axis 18a. At the same time as the bar member is rotated from inactive to active position there is hereby the possibility, by supporting abutment between the bar member 22' and the locking member 31, to positively push the window casement into sealing abutment against a sealing member (not shown further) in window rabbet 12' of the window frame.