US3667162A

US3667162A - Rocking-swinging window leaf

Info

Publication number: US3667162A
Application number: US85509A
Authority: US
Inventors: Christian Lalague
Original assignee: Boussois Souchon Neuvesel SA
Current assignee: Boussois Souchon Neuvesel SA
Priority date: 1969-11-19
Filing date: 1970-10-30
Publication date: 1972-06-06
Anticipated expiration: 1989-06-06
Also published as: CH520856A; NL159462B; GB1307687A; AT320470B; LU61968A1; NL7016284A; ES385636A1; DE2054130A1; BE758371A; FR2067845A5

Abstract

A window having a rocking-swinging leaf which can be displaced horizontally in its plane within the fixed window-casing by means of a control system and can be brought by translational motion from a so-called ''''rocking'''' position in which the leaf is opened in a bellows-type movement to a so-called ''''swinging'''' position in which the leaf is opened as a casement window. The control system comprises a rotatable operating handle which is mounted on the leaf and adapted to displace a sliding bolt which can be detachably secured to the fixed window-casing. The control system and ancillary devices for attaching the leaf to the casing are so arranged as to permit translational motion of the leaf in the plane of the casing between any one of three positions, namely the closed position, the ''''rocking'''' position and the ''''swinging'''' position. The centralized control of the leaf from a handle which is carried by this latter permits considerable simplification of the guiding means while the motion-transmission means are constituted in addition to the sliding bolt and ancillaries by the leaf itself.

Description

United States Patent Lalagiie 21 App]. No.: 85,509

[30] Foreign Application Priority Data Nov. 19, 1971 France ..6939722 [52] US. Cl ..49/ 192, 49/254 [51] Int. Cl ..E05d 15/52 [58] Field of Search ..4 9/192, I93, 254, 258, 259

[56] References Cited UNITED STATES PATENTS 2,933,778 4/1960 Voster ..49/192 x 1,211,733 1 1917 McQueen ..49/254 June 6, 1972 Primary Examiner-Kenneth Downey AltorneyYoung & Thompson [57] ABSTRACT A window having a rocking-swinging leaf which can be displaced horizontally in its plane within the fixed window-casing by means of a control system and can be brought by translational motion from a so-called rocking position in which the leaf is opened in a bellows-type movement to a so-called swinging" position in which the leaf is opened as a casement window. The control system comprises a rotatable operating handle which is mounted on the leaf and adapted to displace a sliding bolt which can be detachably secured to the fixed window-casing. The control system and ancillary devices for attaching the leaf to the casing are so arranged as to permit translational motion of the leaf in the plane of the casing between any one of three positions, namely the closed position, the rocking position and the "swinging position. The centralized control of the leaf from a handle which is carried by this latter permits considerable simplification of the guiding means while the motion-transmission means are constituted in addition to the sliding bolt and ancillaries by the leaf itself.

1 1 Claims, 25 Drawing Figures m a ZFH-Y 5c H 6 7" 3d,, i IHLY PATENTEDJUH s 1972 SHEET 3 BF 7 UMP/57M A 41 A 6 05 PATENTEDJUH 8|972 3.667.162

sum nor 7 ROCKING-SWINGING WINDOW LEAF The present invention relates to a window of the so-called rocking-swinging type, that is to say a window in which the leaf or glass pane can be opened either in a bellows-type oscillating movement carried out by pivoting about a horizontal axis located in the vicinity of the bottom edge of the leaf or alternatively as a casement window in a swinging movement carried out by pivoting about a vertical axis in the vicinity of one of its vertical edges.

In the case of known windows of the rocking-swinging type, the leaf can be displaced horizontally in its plane and can thus be brought by means of a control system either into the socalled "rocking position in which the leaf is opened in a be]- lows-type movement or into the swinging position in which said leaf is opened in the same manner as a casement window, either of these positions being selected as desired by the user. The present invention relates to a window of the type considered.

In known windows of this type, the position of the leaf is controlled by means of link-rods, chains, crank-arms and like motion-transmission elements which are fitted on the frame or fixed window-casing. These elements have a complicated structure, are difiicult to mount in position and increase the cost price of the window to an appreciable extent; furthermore, elements of this type are relatively delicate and liable to get out of order. 7

The aim of this invention is to overcome the above-mentioned disadvantages by employing different motion-transmissio'n means for carrying out the displacement of the leaf.-

In accordance with the invention, the window having a rocking-swinging leaf which can be displaced horizontally in its plane within the fixed window-casing by means of a control system and can be brought by translational motion from a socalled rocking" position in which the leaf is opened in a be]- lows-type movement to a so-called swinging position in which the leaf is opened as a casement window is characterized in that the control system comprises a rotatable operating handle which is mounted on the leaf and adapted to displace a sliding bolt which can be detachably secured to the fixed window-casing and that the control system and ancillary devices for attaching the leaf to the casing are so arranged as to permit translational motion of the leaf in the plane of the casing between any one of three positions, namely the closed position, the rocking position and the swinging position.

As will become apparent hereinafter, the centralized control of the leaf from a handle which is cam'ed by this latter permits considerable simplification of the guiding means while the motion-transmission means are constituted in addition to the sliding bolt and ancillaries by the leaf itself.

Preferably, the displacement of the sliding bolt is horizontal or at least has a horizontal component.

In a preferred embodiment of the invention, the leaf consists of a pane of toughened glass. The precise effect of this structure is to promote the transmission of stresses through the leaf to the movable guiding elements.

According to another characteristic feature of the invention, the rocking position is located between the closed position and the swinging" position.

In a preferred embodiment of the invention, the window comprises a bottom corner fitting which provides an essential connecting member between the leaf and the fixed window casing and is located in the vicinity of the bottom edge of the leaf on the side nearest the casing-upright about which the leaf pivots when it is opened in the casement-window condition, said fitting being provided with a horizontal supporting rod which is pivoted about a vertical axis and on which the leaf is slidably mounted, positioning means being additionally provided for maintaining the leaf in at least two predetermined locations relative to the supporting rod which correspond respectively to the rocking" and swinging positions.

As another preferred feature, the bottom corner fitting comprises a sleeve which is rigidly fixed to the bottom edge of the leaf and slidably mounted along the supporting rod, said sleeve being also capable of pivoting through a predetermined angle about the rod whilst leaf-positioning means comprise spaced notches formed along the supporting rod and corresponding respectively to the rocking" and swinging positions the sleeve being in turn fitted with rolling elements which are capable of penetrating into said notches.

The fitting which is thus arranged pemiits easy operation of the leaf between its three positions while providing the user with a number of important safety features.

Further properties of the invention will become apparent from the description given below, reference being made to the accompanying drawings which are provided by way of nonlimitative example, and in which:

FIG. 1 is a diagrammatic view in elevation of the window, the leaf being located in the plane of the fixed window-casing;

FIG. 2 is a sectional view on a larger scale and taken along line IIII of FIG. 1;

FIG. 3 is a simplified view in perspective showing the leaf in the rocking position;

FIG. 4 is a view which is similar to FIG. 3 and shows the leaf in the swinging position;

FIG. 5 is a partial exploded view in perspective with portions broken away and showing the upper portions of the window-casing and of the leaf;

FIGS. 6 to 8 are perspective views on a large scale showing the lower hinges respectively in the closed position, rocking position and swinging" position;

FIGS. 9 to 11 are partial views in elevation with portions broken away from FIG. 9 and showing the control system with an operating handle which is located respectively in the same three positions as in FIGS. 6 to 8;

FIG. 12 is a view in perspective taken from the interior and showing the bottom comer fitting in the closed position;

FIG. 13 is a view in perspective taken from the exterior of the above-mentioned fitting in the same position;

FIG. 14 is an exploded perspective diagram showing the articulation of the bottom comer fitting;

FIG. 15 is a view in sectional elevation along line XVXV of FIG. 16 and showing a portion of the bottom corner fitting in three positions;

FIG. 16 is the corresponding view in sectional elevation along line XVIXVI of FIG. 15;

FIG. 17 is a view which is similar to FIG. 12 and shows the bottom comer fitting in the rocking position;

FIG. 18 is a view which is similar to FIG. 17 and shows the fitting after opening of the leaf in accordance with FIG. 3;

FIG. 19 is a view which is similar to FIG. 13 and shows the fitting in the inclined position of FIG. 18; I

FIG. 20 is a view which is similar to FIG. 12 and shows the bottom comer fitting in the swinging position;

FIG. 21 is a view which is similar to FIG. 13 and shows the fitting in the position of FIG. 20;

FIG. 22 is a perspective view of the bottom comer fitting after pivotal motion of the leaf to the swinging" position;

FIG. 23 is a partial perspective diagram of the bottom comer fitting in the position of abutment;

FIGS. 24 and 25 are partial diagrammatic views in elevation showing the bottom comer fittings corresponding to two alternative forrns of construction.

Referring now to FIG. 1 of the accompanying drawings, there is shown a window 1 comprising a fixed window-casing 2 which is composed of a horizontal bottom cross-piece 3a, a top cross-piece 3b and vertical uprights 3c and 3d. Said window comprises a leaf 4 which, for example, is made of toughened glass and which, as shown in FIGS. 1 and 2, is applied within the rebate 10 of the casing 2 and pressed against a seal 20; the leaf 4 as thus disposed is located in the plane PP of closure of the window-(as shown in FIG. 2).

In accordance with the invention, the leaf 4 can take up three separate positions in the plane of closure PP (shown in FIG. 1). These positions are derived from each other as a result of substantially horizontal translational movements, namely a position V of closure, a so-called rocking position 0 and a so-called swinging" position B, the position 0 being provided between positions B and V.

Preferably, the positions B, O and V are equidistant and located at the same distance d from each other. In order to permit translational motion of the leaf 4, the distance between the two

uprights

3c, 3d exceeds thewidth of said leaf by at least 2d.

The attachment of the leaf 4 to the fixed window-casing-Z is carried out by means of the following components:

an articulated opening device 12 which is located in the top comer of the window-casing 2 on the same side as the upright 3c and which serves as a pivot about the vertical axis YY when the window opens in'the casement-wim dow condition, namely, in position B as shown in FIG. 4. The opening device 12 also serves as a travel-limiting device in position which corresponds to opening in the bellows condition.

an articulated opening device 13 (optional) which is detachably connected to the leaf 4 and which is located in the opposite top comer.

at least one disengageable hinge assembly 16 mounted on the bottom cross-piece 3a whichdefines the horizontal axis X-X of pivotal motion of the leaf when the window opens in the bellows condition. (Two hinge assemblies 16 are shown in the drawings).

. a device 17 for displacing the leaf 4 in translational motion,

said device being operated by means of a handle 5 which is capable of taking up three positions located at 90 to each other: F corresponding to locking (leaf in position V), F corresponding to the rocking position 0 of the leaf and F, to the swinging position B.

a bottom comer fitting 15 which is located along the crosspiece 3a in the closed position of the leaf and in the vicinity of the upright 3c. The fitting 15 which is complex both in its structure and design functions plays a part in conjunction with the articulated opening device 12 in defining the pivotal axis YY in the swinging" position B I and the axis X-X in the rocking position 0.

These different connecting members will now be described in detail while laying emphasis on the fitting 15 which constitutes one of the essential elementsof the invention.

The articulatedopening device 12 comprises a bearing yoke 122- which is fixed in the comer of the cross-piece 3b and upright 30 and in which a connecting-arm 125 is capable of pivoting about I the axis YY, said connecting-arm being adapted to carry two studs 71, 72 (as shown in FIG. 5).

The stud 72 which serves to limit the angular displacement of the leaf 4 in position 0 is slidably mounted in a guide 123 which is attached to the top portion of said leaf.

The stud 71 is free in position 0. In position B, said stud is abuttingly applied against the bottom of a retaining recess 124 which is attached to the top portion of the leaf 4 so that, in this position, the stud 71 remains in the vertical plane of the leaf and the link-arm 125 accompanies said leaf in its rotation about the axis Y-Y. I

The articulated opening device 13 has three functions:

1. as is the case with the opening device 12, the device 13 limits the travel of the leaf 4 when this latter is open in the bellows condition, namely in position 0.

2. It completely releases the leaf 4 when this latter is in position B to as to cause no hindrance to this operation.

3. It serves to lock the leaf in position V.

The articulated opening device 12 comprises a small plate 131 which is fixed on the cross-piece 3b, the connecting-arm 133 being pivotally attached to said plate and adapted to carry two

studs

73 and 134. The stud73 is slidably fitted in a guide 135 which is fixed on the top edge of the leaf 4, engages in said guide in positions V and O and passes out of said guide in position B.

The stud 134 is abuttingly applied in position V against the bottom of a locking recess 136 and is freed from this latter in the other positions.

As shown in FIG. 6, each disengageable hinge assembly 16 comprises a socket 110 which is fixed on the cross-piece 3a and a male hinge component 112 comprising a projecting pin 112a which is capable of sliding within the socket 110. The

length of the hinge-pin 112a is greater than d and smaller than 2d so that, in positions V and 0 (shown in FIGS. 6 and 7), the hinge-pin 112a is engaged in the socket 110 and permits of pivotal motion about the axis X-X. On the contrary, in position B (shown in FIG. 8), the pin 1120 is disengaged from the socket 110 and this permits of pivotal motion of the leaf 4 about the axis YY. g

In accordance with one particular feature of the invention and for a reason which will be explained below, the hole of the socket 1 10 is ovalized in order to permit a predetermined vertical play of the leaf 4 parallel to the axis Y-Y.

The device 17 for displacing the leaf 4 in translational motion comprises (as shown in FIG. 9) a box which is fixed on the left-hand edge of the leaf 4. There is slidably mounted in said box a plate 102 having an open portion in which is formed a rack 102a, a pinion 101 which is rigidly fixed to the operating handle 5 being adapted to engage with said rack. The plate 102 carries the locking-bolt 6 which projects beyond the box 100. The locking-bolt 6 is recessed so as to form a vertically ovalized slot 9. The travel of the rack 102a within the box 100 is at least equal to 2d.

When the leaf 4 is located in the plane of the window-casing 2, the elongated slot 9 is engaged with a stud 11 carried by a bolt-clasp 7 which is fixed on the upright 3d, said slot being released from said stud when the leaf is open in position B or in position 0.

As shown in FIGS. l2, l3 and 14, the bottom corner fitting 15 comprises a yoke 21 forming a bearing bracket which is fixed in the comer formed by the cross-piece 3a and the upright 3C. Thereis mounted in the yoke 21 a pivot-pin 26 which is disposed along the axis Y-Y, a ring 31 being rotatably mounted on said pin and being integral with a horizontal right-angle bracket 28. A horizontal supporting rod 22 is welded in the line of. extension of said bracket 28 and is aligned along the axis X-X when the leaf 4 is in the closed position in the plane of the window-casing 2.

The bottom edge of the leaf 4 is. also adapted to carry a metal sleeve 23 which is slidably mounted on the rod 22. The sleeve 23 is constituted by a structural member having a crosssection in the shape of an inverted U, one flange 51 of which is straight while the other flange has an extension in the form of a trough 52 which partly surroundsthe rod 22. Holes 57 drilled in the trough 52 pennit the insertion of screws (not 1 shown) which serve to secure the leaf 4 and traverse the sleeve 23 through drilled holes 56. Said screws are intended to engage with a sectional member 4a (shown in FIG. 12) which is fixed on the bottom edge of the leaf 4. In order to pennit sliding motion of the sleeve 23 along the rod 22, said sleeve is fitted internally with three rollers 53 which are capable of running along said rod.

Means areprovided for positioning the sleeve 23 along the rod 22 at locations corresponding to the predetermined positions 0 and B of the leaf 4. These means consist of two sets of spaced notches 33o, 33b which are formed in the top face of the rod 22. The notches 330 are in equidistant relation and the spacing e between the notches corresponds to the spacing of the rollers 53. The same applies to the notches 33b. The relative spacing of two notches 33a, 33b is equal to d. The notches 330 are shaped so as to form a chamfer on the side corresponding to the pivotal motion of the leaf 4 when this latter is open in the bellows condition. The notches 33b can be straight or have a similar shape (as shown in FIGS. 15 and 16).

The sleeve 23 is additionally provided with an abutment flange 62 which is adapted to cooperate with a removable stop 34 of the rod 22. These abutment members or stops are intended to limit the travel of the leaf 4 beyond position B. The sleeve 23 is further provided with a lateral stop 37 which is intended to move into position within a slot 36 of the ring 31 and plays a part in limiting the displacement along the axis X-X of the leaf which is open in position 0.

A retractable stop system is also provided in order to prevent the leaf 4 which is assumed to be in swinging" position from being pushed into the rocking positionwhen the pivotal motion of said leaf about the vertical axis YY has begun.

As shown in FIG. 14, said stop system comprises a lug 41 which is housed beneath a recessed portion 38 of the rod 22, said lug being capable of rotating with respect to said rod about a pivot-pin 43 which is parallel to the axis Y-Y. The lug 41 is urged elastically by a spring 39 to a projecting position with respect to the rod 22. The lug 41 is provided with a shoulder 45 which constitutes the fixed stop of the sleeve 23, the movable stop of which is constituted by the flange 59 which extends beyond the front edge 56 of the trough 52. The retractable lug 41 is integral with a cam 48 which is adapted to cooperate with a heel-shaped projection 30 of a fixed stop 29 forming a lateral extension of the yoke 21. The cam 48 is intended to cause the withdrawal of the shoulder 45 to a position beneath the supporting rod 22 when the axis of said sup porting rod coincides with the horizontal rocking axis X-X.

The operation of the window as thus designed and arranged can readily be understood:

in the closed position V (as shown in FIGS. 1, 6, 9, 12, 13),

the handle 5 of the operating device is in the bottom position F,., the right-hand vertical edge of the leaf 4 is thrust back to the maximum extent towards the upright 30 and penetrates, for example, into a vertical groove of this latter. The stud 71 of the articulated opening device 12 is released from the retaining recess 124 and the stud 134 of the articulated opening device 13 is engaged in the locking recess 136. The pin 112a of the hinge component 112 is engaged to the limit of travel within the socket 110.

In the case of the bottom corner fitting 15, the rollers 53 of the sleeve 23 are located beyond the notches 330. The stop 37 has passed beyond the ring 31. The flange 59 is located opposite to the lug 41 which has withdrawn beneath the supporting rod 22 and the cam 48 is abuttingly applied against the heel 30.

When the operating handle 35 is rotated by one-quarter of a turn in the direction K (as shown in FIG. 1) so as to bring said handle to position F,,, the locking-bolt 6 is withdrawn into the box 100 and the leaf 4 is thus displaced by reaction towards the left-hand side over a distance d and comes to position 0 (as shown in FIGS. 10, 17 and 18). At this moment, the rollers 53 penetrate into the notches 330, thereby ensuring accurate location of the leaf in position 0, positioning being carried out with a higher degree of precision as the weight of the leaf is greater. As a result of this movement, the leaf 4 is lowered over a distance h corresponding to the depth of the notches (as shown in FIG. 15). In position 0, the

studs

71 and 134 are released from the

recesses

124 and 136, the studs 72 and 73 remain engaged in the

guides

123 and 135. The pin 112a of the hinge component 112 has passed out of the socket 110 only to a partial extent (as shown in FIG. 7).

The leaf 4 is made of toughened glass and therefore does not give rise to any difficulty insofar as concerns the transmission of stresses resulting from the operation of the handle 5.

if the handle 5 is then pulled back towards the interior of the room, the leaf rocks in a bellows movement about the axis X-X as materialized by the hinges 16 and the supporting rod 22 until the motion of said leaf is stopped by the operation of the connecting-

arms

125 and 133. The position of maximum opening in the bellows condition has then been reached. It will be noted that this rocking motion is facilitated by the chamfered portions of the notches 330 (this position being shown in chain-dotted lines in FIG. 16). The stop 37 then engages within the slot 36, thereby preventing any displacement'of the leaf 4 along the axis'X-X.

If the operating handle is again rotated in the direction K by one-quarter of a turn and brought to position F the leaf continues its translational motion towards the left and changes over to position B (as shown in FIGS. 11, 20 and 21), accurate positioning being ensured by the downward motion of the rollers 53 into the notches 33b. If the handle is moved beyond this position towards the left, the abutment flange 62 of the sleeve 23 comes up against the stop 34 of the rod 22. In this position, the rollers 53 have not yet passed out of the notches 33b and consequently fall back naturally into these latter under the action of gravity. In position B, the stud 73 is freed from the guide 135 and the pin 1 12a has moved away from the socket 110 (as shown in FIG. 8). The leaf 4 can be rotated about the axis Y--Y by opening in the casement-window condition (as shown in FIGS. 4 and 22). The supporting rod 22 evidently takes part in this movement of rotation.

If an attempt should then inadvertently be made to return the leaf 4 to position 0 after commencement of rotational motion about the axis Y-Y, the flange 59 of the sleeve 23 would strike the shoulder 45 of the lug 41 (FIGS. 22 and 23) which has moved into the position in which it projects from the supporting rod 22 under the action of the spring 39 as soon as the movement of rotation about the axis Y-Y has begun. The extent of projection of the lug 41 is limited by lateral application of the bevelled portion 46 of said lug against the flange 59 (as shown in FIG. 23). In the event that the flange 59 is abuttingly applied against the shoulder 45, steps have also been taken to ensure that the rollers 53 have not yet passed out of the slots 33b and therefore tend to return into these latter under the action of gravity.

At the time of opening in the casement-window condition,

the leaf therefore retains relatively to the rod 22 the precise position which it occupied in the plane of closure and the means which then prevented displacement of the leaf from this precise position again operate in an identical manner during opening in the casement-window condition, this being the case when the leaf is open in any position and even when it is very close to the plane of closure.

The disadvantages of known devices are thus removed. The

leaf 4 does not come into an oblique position with respect to the rebate 20 of the window-casing 2 at the moment of withdrawal from the plane of closure or when reaching this latter.

Alternative modes of execution of the invention may be contemplated; thus, in the embodiment of FIG. 24, the

notches

330, 33b accommodate coupling elements consisting of balls 81 which are engaged in threaded cylindrical bores 82 and these latter are formed in a block 83 which can be secured to the bottom edge of the leaf 4, said block being capable of sliding and pivoting relative to the rod 22; each ball 81 is applied against the rod 22 by means of a spring 84 which is placed within the cylindrical bore 82 and maintained in compression by means of a screw 85 after engagement of this latter within the internally threaded portion of each bore 82. The screw 85 permits adjustment of the compression of the spring 84 and consequently the pressure which the ball 81 is capable of exerting on the supporting rod 22.

In another embodiment of the invention as shown in FIG. 25, the notches 920 and 92b of the rod 22 which are disposed beneath this latter are each engaged by the shaped extremity 91 of a push-rod 93 which is loaded by a spring 94. Said pushrod is carried by a block 95 which is secured to the bottom edge of the leaf 4 and is capable of sliding or pivoting relative to the rod 22.

When these alternative embodiments are adopted, the holes of the sockets and the slot 9 of the locking-bolt 6 are not ovalized since the leaf 4 does not undergo any vertical displacement at the time of horizontal translational motion in its plane of closure.

I claim:

1. A window having a tilting and swinging leaf, comprising a window casing, connection devices mounting the leaf on the window casing for horizontal movement of the leaf in the plane of the window casing from a first closed position to a second tilting position in which the leaf can be opened by a bellows-type motion and to a third swinging position in which the leaf can be opened as a casement window, and a control device comprising one rotatable operating handle mounted on the leaf and a horizontally sliding bolt detachably secured to the window casing and operable by rotation of said rotatable handle to move said leaf from any one of said positions to any other of said positions.

2. A window according to claim 1, wherein the leaf is constituted by a pane of toughened glass.

3. A window according to claim 1, wherein said tilting position is located between the closed position and said swinging position.

4. A window according to claim 1, said connection devices comprising a bottom comer fitting located in the vicinity of the bottom edge of the leaf on the side of the window casing around which the leaf pivots when it is opened in said swinging position, said fitting having a horizontal supporting rod adapted to pivot around a vertical axis and on which the leaf is slidably mounted, and positioning means for maintaining the leaf in at least two locations with respect to the supporting rod corresponding respectively to said tilting and swinging positions.

5. A window according to claim 4,. wherein the bottom comer fitting comprises a sleeve which is rigidly fixed to the bottom edge of the leaf and slidably mounted along the supporting rod, said sleeve being also capable of pivoting through a predetermined angle about said rod.

6. A window according to claim 5, wherein the leaf-positioning means comprise spaced notches formed along the sup porting rod and corresponding respectively to said tilting and swinging positions, the sleeve being fitted with rolling elements which are capable of penetrating into said notches.

7. A window according to claim 6, wherein at least those notches which correspond to said tilting position are shaped so as to permit the transverse displacement of the rolling elements of the sleeve when said sleeve pivots about the supporting rod in said position.

8. A window according to claim 7, wherein the supporting rod is provided with a stop for the sleeve in order to prevent said sleeve from passing substantially beyond said swinging position, the position of said stop being such that the leaf which has come into abutment tends to be restored to said swinging position under the action of gravity.

9. A window according to claim 5, wherein abutment means are provided for the sleeve on the supporting rod in order to prevent the leaf which is assumed to be in said swinging position from being pushed into said tilting position when pivotal motion of the leaf about its vertical axis has begun.

10. A window according to claim 9, wherein the abutment means comprise a retractable lug which is restored elastically to the projecting position with respect to the supporting rod and serves as a stop for the sliding sleeve and a cam which controls the withdrawal of the lug when the plane of the leaf is parallel to the fixed window-casing.

11. A window according to claim 6, wherein an abutment means is provided for the sleeve in a ring which carries the supporting rod in order to prevent the leaf which is assumed to be in said tilting position from being displaced along said supporting rod when the pivotal motion of the leaf about its horizontal axis has begun.

UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No. 3,667,162 Dated June 6, 1972 It is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below:

On the cover sheet [30] the foreign application priority date should read November 19, 1969 Signed and sealed this 31st day of October 1972.

(SEAL) Attes't:

EDWARD M.FLE'ICI-LER,JR. ROBERT GOTTSCHALK Attesting Officer Commissioner of Patents ORM PO-105O (10-69) uscoMM-Dc 0O376-P59 US, GOVERNMINT PRINTING OFFICE: I989 0-368-334,

Claims

4. A window according to claim 1, said connection devices comprising a bottom corner fitting located in the vicinity of the bottom edge of the leaf on the side of the window casing around which the leaf pivots when it is opened in said swinging position, said fitting having a horizontal supporting rod adapted to pivot around a vertical axis and on which the leaf is slidably mounted, and positioning means for maintaining the leaf in at least two locations with respect to the supporting rod corresponding respectively to said tilting and swinging positions.

5. A window according to claim 4, wherein the bottom corner fitting comprises a sleeve which is rigidly fixed to the bottom edge of the leaf and slidably mounted along the supporting rod, said sleeve being also capable of pivoting through a predetermined angle about said rod.

6. A window according to claim 5, wherein the leaf-positioning means comprise spaced notches formed along the supporting rod and corresponding respectively to said tilting and swinging positions, the sleeve being fitted with rolling elements which are capable of penetrating into said notches.