EP0128372B1 - Device for fastening one wing of a pair of windows, doors or the like - Google Patents

Abstract

1. Device for locking the lateral leaf (2) of a two-leaf window, door or the like without a fixed middle post to the top and bottom transverse member or the like of a fixed frame, with bolts (12, 13) adapted to be pushed out upwardly and downwardly respectively, each bolt (12, 13) being formed by or being connected to the free end of a drive rod (14, 15) and the drive rods being displaceable in opposite directions by means of a handle (18) and a reversing device (19) comprising an actuable rotary member (28), the drive rods being furthermore disposed in a housing slot (10) in the longitudinal member (4) of the lateral leaf which is remote from the pivot axis, the housing slot (10) being masked by a cover rail (20), characterised in that the total cross-section of cover rail (20) and reversing device (19), measured transversely to the frame plane, corresponds substantially to the cross-section of the housing slot (10), those ends of the drive rods (14, 15) which are on the same side as the reversing device each forming a displaceable part of the reversing device (19) or in that each is connected directly to a displaceable element of the reversing device (19), the displaceable parts of the reversing device or the drive rod ends co-operating with the rotary member.

Description

The invention relates to a device for locking the secondary wing of a double-leaf window, a door or the like. Without a fixed middle joint with the upper and lower crossbar or the like. A fixed frame, with an upward and a downwardly extendable bolt, wherein each bolt is formed or connected to the free end of a drive rod and the drive rods can be moved in opposite directions by means of a handle and a reversing device having an actuatable rotary member, the drive rods also being located in a receiving groove of the secondary wing longitudinal spar remote from the rotary axis, and the receiving groove is covered by a faceplate.

In the case of double-leaf windows, the main leaf is usually equipped as a rotating leaf, but preferably as a tilt-and-turn leaf with normal fittings. The secondary wing must also be locked when the wing I is open or tilted. It is also required that the secondary wing can be rotated so that its outer surface is accessible for cleaning.

Simple latches were previously used to lock the secondary wing. However, because the upper sash is mostly difficult to access, it has often been left out, which means that the secondary wing in the upper area was not locked. Furthermore, it is known to use so-called edge bolts, one being at the top and the other at the bottom of the secondary wing. The upper edge bolt is usually difficult to reach for smaller people, which is why it is often no longer brought into the locking position after unlocking, for example when cleaning the wing outer surface. In addition, these edge bars often become stiff when the wing is subsequently painted and are therefore no longer used. This applies in particular to the upper edge bar, which is more difficult to access and operate.

Finally, there is also the option of locking the secondary wing indirectly only via the main wing. This solution should generally be rejected because the secondary wing is only partially held when the main wing is tilted. When the main wing is opened, the secondary wing is no longer locked at all.

FR-A-2 237484 discloses a device of the type described in the introduction. Your two drive rods and the faceplate can be easily accommodated in the conventionally designed and dimensioned receiving groove. Said reversing means not described in detail, by means of which it causes the actuation of the drive rods, and ultimately the latches to the side wing requires due to their training and dimensioning of a fairly large recess in drehachsfernen side wing-side member, thus for example in a solid longitudinal spar a large Ausfrä- sun ^g . It reaches up to the glass holding groove. The receiving grooves for solid frames, for example made of wood, as well as for frames made from profiles, are generally of a certain shape and size and for this reason the cross-sections of the drive rod and faceplate of most of the manufacturers of window lock fittings used today are similar to those of Standards, standardized. This also enables smaller workshops to mill such grooves in massive spars without having to keep a large number of cutter sets available.

This standardization of grooves, drive rods and face plates facilitates, speeds up and reduces the cost of window and door manufacture. It therefore makes sense that neither a window manufacturer who only produces small series, nor a window factory in which large series are manufactured, is interested in recesses in the spars for receiving fittings or in the installation of the aforementioned device for receiving a Need to work out the reversing device.

The object of the invention is therefore to further develop a device of the type described in the introduction in such a way that cutouts and the like in the frame spar are unnecessary.

To achieve this object, the characterizing features of claim 1 are proposed in a generic device. Accordingly, the reversing device is located exclusively and completely in the receiving groove of the secondary wing longitudinal spar remote from the rotary axis. The reversing device of this device is dimensioned and designed so that it can be accommodated in the comparatively small groove which already accommodates the drive rods. There are restrictions with regard to the extent of the reversing device primarily transversely and perpendicular to the groove, while there is generally a little more space available in the longitudinal direction of the groove.

Nevertheless, the two bolts can still be unlocked or locked centrally from a single point. The handle can be placed on the wing so that it is easily accessible even by smaller people. Because of the good accessibility, the operation as such is also simplified. Of course, these bolts also work in a known manner, each with a striking plate or the like on the upper or lower cross member of the fixed frame. However, if the fixed frame is made sufficiently stable, for example of metal, the striking plate can be omitted and the locking can take place directly in a corresponding hole or receptacle of the fixed frame.

The receiving groove, which as I said is a general My usual dimensioning, as used for conventional window locks, is generally available for profile frames. In the case of a wooden window, any processor can continue to create it in a known manner using the tools available to him.

In a further development of the invention it is proposed that the drive rods are mounted on the faceplate to be longitudinally displaceable. As a result, the faceplate and the drive rods with the reversing device can be combined to form a tradable unit, which is mounted overall on the secondary wing or its receiving groove. In addition, the faceplate also protects the underlying parts in a known manner, in particular also the longitudinal guides for the drive rods and the reversing device. Last but not least, the faceplate offers a clean optical closure of the receiving groove, which in a known manner has a support shoulder for the left and right edge of the faceplate on both sides at its outlet end.

Another variant of the invention is characterized by at least one guide piece of the faceplate for each drive rod, which passes through an elongated hole or the like of the drive rod with a foot held on the faceplate, and the thickened head of which is assigned to the face of the drive rod facing away from the faceplate . This guide piece can, for example, have an essentially T-shaped shape, in which case the T-crosspiece forms the thickened head. Its width can roughly correspond to that of the drive rods. The length of the elongated hole penetrated by the foot or T-longitudinal web essentially corresponds to the maximum possible stroke or displacement path of the bolt. Each drive rod is thus held transversely to its plane on the one hand by the thickened head and on the other hand by the faceplate.

The thickened head of each guide piece also very advantageously forms a spacer element for the drive rod and is supported on the base of the groove. Accordingly, its thickness depends on the groove depth and the total thickness of the drive rod and faceplate, including the necessary play for the drive rod.

In a further embodiment of the invention, the guide piece has a fastening bore which extends transversely to the longitudinal axis of the drive rod and through which a fastening means, for example a screw, can be inserted, the inner end of which is screwed into the wing spar. This screw can be tightened without disadvantage, which then holds this device securely. It also follows from this that the number of guide pieces also depends on the overall length of the device. In the case of a window, two guide pieces for the upper and lower drive rod, for example, may be sufficient. Furthermore, it is very advantageous that the rotary member is a pinion, and the two pinion-side ends of the drive rods are designed as toothed racks or the like or are each connected to a toothed rack; wherein the racks are coupled opposite to each other with the pinion and the pinion is in drive connection with the handle. The pinion and each rack or a correspondingly perforated rod guarantee an exact, form-fitting coupling and a safe working method. In addition, they are simple components. The toothed racks can, for example, be molded directly onto the inner ends of the toothed racks. Stamping of the teeth is particularly useful here. If at the same time the bolts are molded onto the drive rod, this contributes very significantly to the low manufacturing costs of the individual parts and also the costs for assembling the entire device.

In a development of the invention it is proposed that a shaft of the handle engages in an axial bore of the pinion, the connection is in particular designed as a positive connection. The axial bore extends perpendicular to the longitudinal axis of the faceplate or drive rods and also perpendicular to the faceplate plane. It is particularly expedient for the shaft to be designed as a polygonal shaft, at least in the area of the positive connection, and for it to penetrate a bore of the faceplate to the outside, the outer shaft end carrying a flat, approximately air gap-thick handle. With the help of the latter, the shaft can be rotated both clockwise and counterclockwise, preferably a 180 ° rotation for locking and unlocking is provided. The small thickness of the handle allows it to be left constantly on the shaft or the shaft in the pinion bore. Nevertheless, the shaft can be designed to be removable so that it can be removed together with the handle, thereby preventing an undesired actuation of this device. This handle can be, for example, a one-armed lever.

Another variant of the invention is characterized by a locking member of the pinion for the inserted shaft end of the handle, which is designed in particular as a spring ring. The latter is expediently located in the region of the insertion opening of the pinion, so that it can hold the shaft even when it is not fully inserted into the pinion's receiving bore. In the case of a spring washer, there is a corresponding receiving groove in the outward-pointing pinion end.

The plane of each toothed rack or the like runs in a very advantageous manner approximately perpendicular to the plane of the drive rod and faceplate and also the pinion axis extends perpendicular to the faceplate plane and perpendicular to the longitudinal axis of the faceplate. In a further embodiment of the invention it is proposed that the teeth of the Show racks against the inner surface of the faceplate, and each rack is made in one piece with its drive rod. So even though the drive rod and the faceplate are made of flat material, this _" upright arrangement" of the toothed rack with respect to the faceplate can be achieved, for example, by tilting the drive rod end designed as a rack by 90 °. At the same time, there is a sufficiently wide space between these two racks for receiving the Ritzels, which, as I said, lies between the two drive rods.

A preferred embodiment of the invention provides that the pinion is rotatably mounted with a first pin-shaped projection in a bore of the faceplate and with a second pin-shaped extension coaxial therewith in a housing of the reversing device fastened to the faceplate. This housing can be made very compact and essentially arranged between the toothed racks, so that the depth of the device in this area can be kept extremely small, which enables assembly in the conventional, comparatively small groove, without requiring additional cutouts and the like .

It is particularly expedient for the housing to overlap the toothed rack back, preferably with lateral shoulders, the thickness of this back being reduced, in particular in a shoulder-like manner. The latter feature makes it possible to make the housing particularly narrow in the direction of the width of the faceplate, in particular to choose this width so that it is not greater than the total width of the pinion with the two racks engaging on the left and right. The side lugs ensure that the toothed rack and pinion always mesh securely.

Another embodiment of the invention provides that the housing of the reversing device is riveted to the faceplate by means of in particular two molded rivets. This device also contributes to the simple, quick and safe installation of this device. To a certain extent from the back, these rivet attachments of the housing are inserted into associated rivet holes in the faceplate and subsequently permanently deformed. It is advantageous here if these bores of the faceplate are chamfered on the outside.

The molded rivets are hollow rivets in a particularly expedient manner and at the same time they each form a fastening bore for the faceplate on the secondary wing. Otherwise, you can choose the thickness of the housing so that the housing can also take on the task of a spacer.

Another variant of the invention provides that each bolt in the unlocked position is flush with the associated faceplate end. This makes it possible to cut the faceplate and the bolt to length together, thereby precisely adapting the device to the respective wing height. Expediently, when the bar is cut to length, the corners will be rounded off or beveled somewhat.

According to another preferred embodiment of the invention, the faceplate is held at its upper and / or lower end by means of one or each of a guide piece which has an opening for the bolt. This means that this end, calculated from the last guide piece, can be made particularly long in order to achieve a wide range of adjustment options.

An advantageous development of the invention consists in that at least one locking plate and / or tilting locking plate or the like is attached to the faceplate for a locking and / or locking tilting fitting of the main wing directly or indirectly. As a result, the main wing can then be securely locked and unlocked with the latter when the secondary wing is closed and locked. The panels must be designed in such a way that the corresponding elements of the main wing fittings can interact in the manner intended. This applies to both locking and unlocking, as well as switching from the closed to the tilt position and vice versa.

Each striker plate or the like expediently has a fastening bore which is aligned with a fastening bore of the faceplate and preferably also of or one of the guide pieces for the drive rod. This means that the locking plate can be manufactured separately and still be installed together with the faceplate in this area without additional assembly effort. It is advantageous if a suitable anti-rotation device is provided in order to avoid a second fastening screw for the plate. Such an anti-rotation device can consist, for example, of one or two pin-hole connections. In particular, two adjacent pins are provided on the locking plate, which engage in corresponding bores or punched holes in the faceplate.

• Figur 1 Schematisch einen Schnitt senkrecht zur Flügelebene im Bereich der beiden einander zugeordneten Längsholme des Haupt- und des Nebenflügels einer ersten Ausführungsform,
• Figur 2 einen der Fig. 1 entsprechenden Schnitt einer zweiten Variante der Erfindung,
• Figur 3 explosionsartig die Vorrichtung in perspektivischer Darstellung mit Blick auf die Außenseite der Stulpschiene,
• Figur 4 eine vergleichbare Darstellung mit Blick auf die Rückseite der Treibstangen,
• Figur 5 einen Schnitt gemäß der Linie V-V der Fig. 3, in vergrößtertem Maßstab,
• Figur 6 einen Schnitt entlang der Linie VI-VI der Fig. 3, ebenfalls vergrößert.

The invention is explained in more detail below on the basis of exemplary embodiments. Here represent:

• FIG. 1 shows schematically a section perpendicular to the wing plane in the region of the two longitudinal spars of the main and secondary wings assigned to one another in a first embodiment,
• FIG. 2 shows a section corresponding to FIG. 1 of a second variant of the invention,
• FIG. 3 shows the device in an exploded perspective view with a view of the outside of the faceplate,
• FIG. 4 shows a comparable representation with a view of the rear of the drive rods,
• 5 shows a section along the line VV of FIG. 3, on an enlarged scale,
• Figure 6 shows a section along the line VI-VI of Fig. 3, also enlarged.

Below it is assumed that the The device according to the invention is installed in a two-leaf window, the right wing of which is seen from the inside and represents the main wing 1 and the left wing is the secondary wing 2, the main wing being rotatable and tiltable, while the secondary wing is only rotatably mounted in a fixed frame, not shown is. The main wing is turned and tilted in a known manner with a known fitting. Accordingly, the vertical spars 3 of the main wing 1 and 4 of the secondary wing 2 are located directly next to one another, the spars 3 and 4 being the spars of the wings in question, which are located away from their axes of rotation. As indicated in FIG. 1, the wings can be made from solid material, for example wood, or constructed from profiles according to FIG. 2. In both types, cover strips are still provided to cover the gap space and for sealing in this window area. In the case of wooden frames, the cover strips 6 and 7 can, contrary to the illustration in FIG. 1, also consist of wood and be directly molded on or glued to it in a known manner. The cover strip 8 of the embodiment of FIG. 2 is, however, manufactured separately and mounted on the profile of the secondary wing.

Both in the vertical spar 3 of the main wing 1 and in the vertical spar 4 of the secondary wing 2, a receiving groove 9 or 10 is provided. In the embodiment of FIG. 1, these two grooves lie directly opposite one another. In the variant shown in FIG. 2, they are also opposite one another, but there is still the inner web 11 of the cover strip 8 between them. The cross-sectional shape and size of these receiving grooves correspond to the standard design customary here. For this reason, in the case of a frame made of solid bars, the groove can be created with the generally available tools. In the case of profiles made of plastic or aluminum or the like, the profiles do not deviate from conventional profiles in this respect.

3 or 4 is inserted into the groove 10 of the secondary wing 2. It is used to lock the secondary wing of a two-wing window comprising a main and a secondary wing without a fixed center material relative to a fixed frame or the like. The locking should take place up and down by an upper bolt 12 of the device in an upper receptacle of the engages horizontal spar of the fixed frame, while at the same time a lower latch 13 protrudes into a lower receptacle of the lower horizontal spar of the fixed frame. These receptacles can either be located on corresponding striking plates or the like of these two spars - as indicated by dash-dotted lines in FIG. 4 - or can be provided directly on these spars.

The bars 12 and 13 are each formed according to the invention by the free end of an upper drive rod 14 and a lower drive rod 15. Instead of the one-piece production of the drive rod and bolt, a separate production with subsequent connection can also take place. However, one-piece production is cheaper and simpler.

The drive rods can be moved in opposite directions, i. H. at the same time the upper drive rod 14 moves upward in the direction of arrow 16 and the lower drive rod 15 moves downward in the direction of arrow 17. The arrows 16 and 17 symbolize the locking movement, while the unlocking movement naturally runs in the opposite direction. This locking and unlocking movement is achieved with the aid of a handle 18 and a reversing device 19 connected between the inner ends of the drive rods 14 and 15.

The drive rods 14 and 15 are covered in the installed state by means of a face plate 20 and at the same time mounted longitudinally displaceably on this face plate. This is achieved with the aid of guide pieces 21. In the case of the exemplary embodiment, two guide pieces are provided for each drive rod. The guide pieces are fastened to the faceplate 20, for example riveted. Her foot 22 penetrates an elongated hole 23 of the associated drive rod 14 or 15. Accordingly, the drive rod is located between the faceplate 20 and a thickened head 24 of the guide piece 21. The latter has a T-shaped shape in the exemplary embodiment. So that the faceplate and the drive rods are held together with the help of the guide pieces 21. Moreover, a fastening bore 25 extending transversely to the longitudinal axis of the drive rod is provided on each guide piece 21. In the case of a rivet connection, the use of a hollow rivet, in particular a hollow rivet molded onto the guide piece, is therefore recommended. The thickness of the thickened head 24 is selected so that the guide piece can also take on the function of a spacer. It is supported on the groove base 26. The faceplate 20 then closes flush with the spar surface 27 having the groove (FIG. 1), i. H. the faceplate is recessed in a known manner in the outer wide groove part. The assembly is carried out with the aid of a fastening element, in particular a screw, which passes through the fastening bore 25 and is screwed, for example, into the material of the spar 4.

The reversing device 19 is a rotary member which is in drive connection with the two drive rods 14, 15 and which is preferably designed as a pinion 28. In addition, the two pinion-side ends of the drive rods are designed as racks 29 and 30, respectively. This one-piece production of drive rod and rack is particularly inexpensive. Instead, the racks can also be manufactured separately and connected to the inner drive rod end. As clearly shown in FIG. 6, the pinion 28 is located between the two racks 29 and 30, ie the racks are coupled to the pinion opposite one another.

The pinion 28 has an axial bore 31 into which a shaft 32 of the handle 18 can be inserted. In order to obtain a positive connection, the shaft 32 is designed as a polygonal shaft, at least in the insertion area, but preferably over its entire length. Accordingly, the axial bore 31 is a polygonal bore. Because the handle 33 of the handle 18 is assigned to the outer surface of the faceplate 20 or is located in the gap 5, it becomes particularly flat, ie. H. formed about gap air thick. Accordingly, the shaft 32 passes through a bore 34 of the faceplate 20. However, this bore 34 is expediently made somewhat larger, so that a pin-shaped extension of the pinion 28 can be stored therein. The pinion 28 has two such pin-shaped approaches. The first peg-shaped extension 36 penetrates the bore 34 of the faceplate 20, while the second conical extension 35, which projects coaxially but projects in the opposite direction, is rotatably mounted in a housing 37 of the reversing device 19 fastened to the faceplate 20. In the area of the first peg-shaped extension 36 there is a receiving groove for a securing member, in particular a spring ring 38. It prevents the handle 28 from being inadvertently released. Nevertheless, the handle can be removed if desired.

The housing 37 of the reversing device 19 is firmly connected to the faceplate 20 by means of two, in particular integrally formed, rivets 39 and 40. It is expedient to use hollow rivets. In addition, the corresponding bores of the faceplate 20 are correspondingly widened or chamfered towards the outside (FIG. 5). 6 overlaps the rack backs 41 and 42 in order to ensure a secure tooth engagement between the pinion 32 and the two racks 29 and 30. The thickness of this back is expediently reduced in steps. As a result, the width of the housing 37 does not exceed the total width of the pinion and racks. The molded rivets 39 and 40 are, as said, hollow rivets, and as a result, they also form fastening bores for the faceplate with the housing 37 held thereon on the vertical spar 4 of the secondary wing 2.

3 and 4 clearly show, the plane of the toothed racks 29 and 30 runs approximately perpendicular to the plane of the drive rod 14 and 15 and thus also to the plane of the faceplate 20. This is also clearly shown in FIG. 6 3 and 4 that the teeth of the toothed racks 29 and 30 point against the inner surface 43 of the faceplate 20. Due to the one-piece production of the rack and drive rod and these mutually perpendicular planes, the inner drive rod ends forming the rack are set at 90 °. The setting point is designated 44 in FIG. 4.

According to FIG. 3, each bolt 12 or 13 in the unlocked position runs flush with the associated faceplate end. This makes it possible to cut the bolts and the faceplate together in this position and bring them to the required exact size. If the distance of the faceplate end from the guide piece 21 or from the last guide piece is relatively large, it is expedient if the free faceplate end is held down by a joining piece 45. It has an opening 46 through which the bolt 12 or 13 can pass upwards or downwards. The _tabs' 47 engages over the associated Stulpschienenende. The two guide pieces are inserted into the groove 10, and their U-shaped edge 48 engages over the upper and lower end of the groove.

In order to be able to lock the main wing 1 on the secondary wing 2, two locking plates 49 or a locking plate 49 and a tilting locking plate 50 are mounted on the outer surface of the faceplate 20, for example. With these plates interlocking nails or corresponding elements of a locking and / or locking tilting fitting of conventional design of the main wing 1 interact. With the exception of their fastening devices, they are therefore designed in a known manner. For example, the closing plate 49 has a fastening bore 51 which is aligned with a fastening bore of the faceplate 20 and preferably with the fastening bore 25 of the associated guide piece 21. Two transversely arranged pin-hole connections ensure a non-rotatable mounting of the locking plate 49. The two pins 52 and 53 are formed on the locking plate, while the associated holes are on the faceplate.

The tilt locking plate 50 has an approximately central mounting hole 54 which is located between two pins 55 and 56 arranged in the longitudinal direction for a corresponding pin-hole connection with the faceplate. The bore 54 in turn is aligned with a fastening bore 25 of a guide piece 21.

In the exemplary embodiment according to FIG. 2, the inner web 11 of the cover strip 8, as already explained, overlaps the faceplate 20 of this device. As a result, the locking plate 49 and / or a tilting locking plate is not placed directly on the outside of the faceplate 20, but is indirectly attached to the faceplate by interposing this inner web 11.

Claims (20)

1. Device for locking the lateral leaf (2) of a two-leaf window, door or the like without a fixed middle post to the top and bottom transverse member or the like of a fixed frame, with bolts (12, 13) adapted to be pushed out upwardly and downwardly respectively, each bolt (12,13) being formed by or being connected to the free end of a drive rod (14, 15) and the drive rods being displaceable in opposite directions by means of a handle (18) and a reversing device (19) comprising an actuable rotary member (28), the drive rods being furthermore disposed in a housing slot (10) in the longitudinal member (4) of the lateral leaf which is remote from the pivot axis, the housing slot (10) being masked by a cover rail (20), characterised in that the total cross-section of cover rail (20) and reversing device (19), measured transversely to the frame plane, corresponds substantially to the cross-section of the housing slot (10), those ends of the drive rods (14, 15) which are on the same side as the reversing device each forming a displaceable part of the reversing device (19) or in that each is connected directly to a displaceable element of the reversing device (19), the displaceable parts of the reversing device or the drive rod ends co-operating with the rotary member.

2. Device according to Claim 1, characterised in that the drive rods (14, 15) are mounted for longitudinal displacement on the cover rail.

3. Device according to Claim 2, characterised by at least one guide piece (22) of the cover rail (20) for each drive rod (14, 15), which has a foot (22) on the cover rail and traversing an elongated hole (23) or the like in the drive rod and of which the thickened head (24) is associated with that surface of the drive rod which is remote from the cover rail.

4. Device according to Claim 3, characterised in that the thickened head (24) of each guide piece (21) forms at the same time a spacer element for the drive rod (14, 15) and is supported on the bottom (26) of the slot.

5. Device according to Claim 3 or 4, characterised in that the guide piece (21) has a fixing bore (25) extending transversely of the longitudinal axis of the drive rod.

6. Device according to at least one of the preceding Claims, characterised in that the rotary member is a pinion (28) and in that the two ends of the drive rods (14, 15) which are on the pinion side are constructed as racks (29, 30) or the like or are in each case connected to a rack, the racks being coupled to the pinion (28) oppositely to each other, the pinion being drivingly connected to the handle (18).

7. Device according to Claim 6, characterised in that a shaft (32) of the handle (18) engages an axial bore (31) in the pinion (28), the connection being particularly constructed as a form-locking connection.

8. Device according to Claim 7, characterised in that the shaft (32) is constructed as a multi- sided shaft at least in the zone of the form-locking connection and traverses a bore (34) in the cover rail (20) to extend outwardly, the outward end of the shaft having a flat handle (33) substantially as thick as the gap.

9. Device according to Claim 7 or 8, characterised by a securing member for the pinion (28) for the pushed-in shaft end of the handle (18) which is constructed in particular as a spring ring (38).

10. Device according to at least one of Claims 6 to 9, characterised in that the plane of each rack (29, 30) or the like extends substantially at a right-angle to the plane of drive rods (14, 15) and cover rail (20), and in that the pinion axis extends at a right-angle to the plane and to the longitudinal axis of the cover rail.

11. Device according to Claim 10, characterised in that the teeth of the rack (29, 30) point towards the inside face (43) of the cover rail (20) and in that each rack is made in one piece together with its drive rod (14, 15).

12. Device according to at least one of Claims 6 to 11, characterised in that the pinion has a first journal-like projection (36) mounted pivotally in a bore (34) in the cover rail (20) and has, coaxial therewith, a second journal-like projection (35) pivotally mounted in a housing (37) of of the reversing device (19) which is fixed on the cover rail (20).

13. Device according to Claim 12, characterised in that the housing (37) engages laterally over the backs (41, 42) of the racks, preferably through lateral projections, the thickness of these backs being reduced, particularly in stepwise fashion.

14. Device according to Claim 12 or 13, characterised in that the housing (37) of the reversing device (19) is riveted to the cover rail (20) particularly by means of two swaged on rivets (39, 40).

15. Device according to Claim 14, characterised in that the swaged on rivets (39, 40) are hollow rivets and in that they form at the same time fixing bores for the cover rail (20) on the lateral leaf.

16. Device according to at least one of the preceding Claims, characterised in that each bolt (12, 13), in the releasing position, extends flush with the associated cover rail end.

17. Device according to at least one of the preceding Claims, characterised in that the cover rail is at ist top and/or bottom end supported by a or a respective guide piece (45) which has a passage (46) through which the bolt (12, 13) can pass.

18. Device according to at least one of the preceding Claims, characterised in that directly or indirectly on the cover rail (20) is at least one closure plate (49) and/or tilting closure plate (50) or the like for a locking and/or locking-tilting fitting on the main leaf (1).

19. Device according to Claim 18, characterised in that each closure plate (49) or the like has a fixing bore (51) which is aligned with a fixing bore in the cover rail (20) and preferably also with the or one of the guide pieces (21) for the drive rod (13.14).

20. Device according to Claim 18 or 19 with a lateral leaf provided with a cover strip, the cover strip engaging over the cover rail, characterised in that each closure plate (49) or the like is fixed indirectly on the cover rail (20) through an interposed cover strip (8).

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