GB2559782A

GB2559782A - Espagnolette

Info

Publication number: GB2559782A
Application number: GB1702641.0A
Authority: GB
Inventors: Dolman Terry
Original assignee: Assa Abloy Ltd
Current assignee: Assa Abloy Ltd
Priority date: 2017-02-17
Filing date: 2017-02-17
Publication date: 2018-08-22
Anticipated expiration: 2037-02-17
Also published as: GB2559782B; GB201702641D0

Abstract

An espagnolette 10a having a guide housing (faceplate) 20 with a channel coupled to a drive arrangement 50, e.g. rack and pinion; a first elongate drive bar 30 with a first bolt 11 and a second elongate drive bar 40 with a second bolt 12; both drive bars extending from the drive arrangement along the channel, the second drive bar 40 extends beyond the first bolt 11. The drive 50 simultaneously drives first and second drive bars in respective first and second directions, e.g. opposite directions for a bi-directional espagnolette. Each drive bar preferably has a recess 36, 47 for bolt supports 48, 37 such that each drive bar is coplanar and adjacent. Also claimed is an espagnolette with at least 3 bolts, preferably four. A further claim is to an espagnolette with a guide housing/faceplate with a channel having at least one countersunk hole 4-7 with depending walls the height of the channel (fig.7b).

Description

(54) Title of the Invention: Espagnolette Abstract Title: An espagnolette (57) An espagnolette 10a having a guide housing (faceplate) 20 with a channel coupled to a drive arrangement 50, e.g. rack and pinion; a first elongate drive bar 30 with a first bolt 11 and a second elongate drive bar 40 with a second bolt 12; both drive bars extending from the drive arrangement along the channel, the second drive bar 40 extends beyond the first bolt 11. The drive 50 simultaneously drives first and second drive bars in respective first and second directions, e.g. opposite directions for a bi-directional espagnolette. Each drive bar preferably has a recess 36, 47 for bolt supports 48, 37 such that each drive bar is coplanar and adjacent. Also claimed is an espagnolette with at least 3 bolts, preferably four. A further claim is to an espagnolette with a guide housing/faceplate with a channel having at least one countersunk hole 4-7 with depending walls the height of the channel (fig.7b).

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TITLE

Espagnolette

TECHNOLOGICAL FIELD

Embodiments of the present invention relate to an espagnolette. In particular, they relate to an espagnolette for use in locking a door or a window.

BACKGROUND

An espagnolette enables a window or a door to be locked by engaging bolts at several positions along the window or door. The bolts are engaged by operating a single handle.

BRIEF SUMMARY

According to various, but not necessarily all, embodiments of the invention there is provided an espagnolette, comprising: an elongate guide housing defining a channel having a length dimension; a drive arrangement coupled to the elongate guide housing; a first elongate member, extending along the channel in the length dimension from the drive arrangement, and supporting at least a first bolt; and a second elongate member supporting at least a second bolt, wherein the second elongate member extends along the channel in the length dimension from the drive arrangement beyond the first bolt, such that the first bolt is positioned between the drive arrangement and the second bolt in the length dimension; wherein: the drive arrangement is configured to simultaneously drive the first elongate member along the channel in a first direction and the second elongate member along the channel in a second direction.

An espagnolette, comprising: an elongate guide housing defining a channel having a length dimension; first, second and third bolts; a first elongate member, extending along the channel in the length dimension, and supporting at least the first bolt and the third bolt; and a second elongate member, extending along the channel in the length dimension, supporting at least the second bolt, wherein the second bolt is positioned between the first bolt and the third bolt in the length dimension.

An espagnolette, comprising: an elongate guide housing comprising a channel floor and channel walls extending from the channel floor, wherein the channel floor and the channel walls define a channel having a depth dimension, a width dimension and a length dimension, the channel floor defining the width dimension and the channel walls defining the depth dimension; at least one elongate member positioned in the channel and arranged to slide along the channel in the length dimension; and at least one countersunk aperture having a height corresponding with a height of the channel walls.

According to various, but not necessarily all, embodiments of the invention there is provided examples as claimed in the appended claims.

BRIEF DESCRIPTION

For a better understanding of various examples that are useful for understanding the detailed description, reference will now be made by way of example only to the accompanying drawings in which:

Fig. 1 illustrates an exploded view of a first embodiment of an espagnolette;

Figs 2A, 2B and 2C illustrate side, end and underside views of the first embodiment of the espagnolette;

Fig. 3 illustrates a cross-sectional view of an elongate guide housing of the first embodiment of the espagnolette;

Fig. 4A illustrates a plan view of the first embodiment of the espagnolette with the elongate guide housing removed;

Fig. 4B illustrates a plan view of the first embodiment of the espagnolette with the elongate guide housing partly cut away;

Fig. 4C illustrates a plan view of the first embodiment of the espagnolette;

Fig. 5A illustrates a plan view of the first embodiment of the espagnolette;

Fig. 5B illustrates a cross-sectional view of the first embodiment of the espagnolette through the line A-A in Fig. 5A;

Fig. 6A illustrates a side elevation of the first embodiment of the espagnolette in a first locking configuration;

Fig. 6B illustrates a cross-sectional view of the first embodiment of the espagnolette in the first locking configuration, through the line C-C in Fig. 6A;

Fig. 6C illustrates a side elevation of the first embodiment of the espagnolette in a second locking configuration;

Fig. 6D illustrates a cross-sectional view of the first embodiment of the espagnolette in the second locking configuration, through the line D-D in Fig. 6C;

Fig. 7A illustrates an underside view of a portion of the first embodiment of the espagnolette;

Fig. 7B illustrates a cross-sectional view of the first embodiment of the espagnolette through the line B-B in Fig. 7A;

Fig. 8A illustrates a plan view of a second embodiment of the espagnolette with the elongate guide housing removed;

Fig. 8B illustrates a plan view of the second embodiment of the espagnolette;

Fig. 8C illustrates a side elevation of the second embodiment of the espagnolette;

Fig. 9 illustrates an exploded view of a third embodiment of an espagnolette;

Fig. 10 illustrates a perspective view of the third embodiment of the espagnolette;

Fig. 11A illustrates a plan view of the third embodiment of the espagnolette with the elongate guide housing removed;

Fig. 11B illustrates a plan view of the third embodiment of the espagnolette with the elongate guide housing partly cut away;

Fig. 11C illustrates a plan view of the third embodiment of the espagnolette;

Fig. 12A illustrates a plan view of the third embodiment of the espagnolette;

Fig. 12B illustrates a cross-sectional view of the third embodiment of the espagnolette through the line B-B in Fig. 12A;

Figs 13A and 13B illustrate plan and side views of the third embodiment of the espagnolette in a first locking configuration; and

Figs 13C and 13D illustrate plan and side views of the third embodiment of the espagnolette in a second locking configuration.

DETAILED DESCRIPTION

Embodiments of the present invention relate to an espagnolette 10a, 10b, 10c that enables a window or door to be locked by engaging bolts at several positions along the window or door. Advantageously, the espagnolette 10a, 10b, 10c has a compact construction.

Cartesian coordinate axes 70 are provided in each of the figures to enable the reader to orientate the figures relative to one another.

Fig. 1 illustrates a first embodiment of the espagnolette 10a. The espagnolette 10a comprises an elongate guide housing 20, a first elongate member 30, a second elongate member 40, a drive arrangement 50 and first, second, third and fourth bolts 11-14.

Each of the bolts 11-14 is attached to either the first elongate member 30 or the second elongate member 40 via a fastening portion 11a-14a and protrudes through a slot 15-18 in the elongate guide housing 20. The elongate guide housing 20 further comprises a plurality of countersunk apertures 4-7 for mounting the espagnolette 10a to a door or a window. The shape and positioning of each of the elongate members 30, 40 and the countersunk apertures 4-7 is such that a fastener, for instance a screw, may pass through both the elongate guide housing 20 and the elongate members 30, 40 in order to fasten the espagnolette 10a to a door or a window. The espagnolette 10a may, for example, be positioned in a euro groove of a door or a window.

The elongate guide housing 20 further comprises apertures 3 for fixing the drive arrangement 50 to the elongate guide housing 20.

Figs 2A, 2B and 2C illustrate side, end and underside views of the first embodiment of the espagnolette 10a respectively.

Fig. 3 illustrates a cross-sectional view of the elongate guide housing 20 of the espagnolette 10a. The elongate guide housing 30 is configured to house and retain the elongate members 30, 40 in a side-by-side arrangement, as shown, for example, in fig. 2C.

The elongate guide housing 20 has a C-shaped cross-section. It defines a channel 24 which has a length dimension aligned with the x axis in the figures, a width dimension aligned with the z axis in the figures and a depth dimension aligned with the y axis in the figures. The depth dimension D and the width dimension W are shown in fig. 3; the length dimension is not shown in fig. 3 and extends into and out of the page.

The elongate guide housing 20 comprises a channel floor 21, channel walls 22 and channel lips 23. In the illustrated example, the channel floor 21 is substantially flat and the channel walls 22 are substantially perpendicular to the channel floor 21. The channel lips 23 are substantially parallel to the channel floor 21 and act to retain the elongate members 30, 40 within the channel 24.

The first and second elongate members 30, 40 extend along the channel 24 in the length dimension. The length, width and depth of each of the elongate members 30, 40 is aligned with the length, width and depth dimensions of the channel 24 respectively.

The first and second elongate members 30, 40 each extend from the drive arrangement 50 in the -x and +x directions. The second elongate member 40 extends beyond the first bolt 11 in the +x direction, such that the first bolt 11 is positioned between the drive arrangement 50 and the second bolt 12 in the length dimension.

The first elongate member 30 extends beyond the fourth bolt 14 in the -x direction, such that the third bolt 13 is positioned between the drive arrangement 50 and the fourth bolt 14 in the length dimension.

The first elongate member 30 comprises first and second bolt supports 37, 38 for supporting the first bolt 11 and the third bolt 13. The second elongate member 40 comprises first and second bolt supports 47, 48 for supporting the second bolt 12 and the fourth bolt 14. The fastening portion 11a of the first bolt 11 extends through a first slot 15 in the elongate guide housing 20 and into a first aperture 31 in the first bolt support 37 of the first elongate member 30. The fastening portion 12a of the second bolt 12 extends through a second slot 16 in the elongate guide housing 20 and into a first aperture 41 in the first bolt support 37 of the second elongate member

40. A fastening portion 13a of the third bolt 13 extends through a third slot 17 in the elongate guide housing 20 and into a second aperture 32 in the second bolt support 38 of the first elongate member 30. A fastening portion 14a of the fourth bolt 14 extends through a fourth slot 18 in the elongate guide housing 20 and into a second aperture 42 in the second bolt support 48 of the second elongate member 40.

Each of the bolts 11-14 is dimensioned such that only the fastening portion 11a, 12a, 13a, 14a may pass through the relevant slot 15-18 in the elongate guide housing 20; the remaining portion of the bolt 11-14 rests on the elongate guide housing 20.

The bolts 11-14 are separated from one another along the length dimension of the channel 24 and substantially aligned with one another along the width dimension of the channel 24.

Fig 4A illustrates a plan view of the first embodiment of the espagnolette 10a with the elongate guide housing 20 removed. Fig 4B illustrates a plan view of the first embodiment of the espagnolette 10a with the elongate guide housing 20 partly cut away. Fig 4C illustrates a plan view of the first embodiment of the espagnolette 10a.

As is best seen in fig. 1, the width of each of the first elongate member 30 and the second elongate member 40 varies along their lengths.

The first elongate member 30 comprises a recess 36 for accommodating the second bolt support 48 of the second elongate member 40, providing a variance in the width of the first elongate member 30 along the length dimension, between the drive mechanism 50 and the third bolt 13. The second elongate member 40 comprises a recess 46 for accommodating the first bolt support 37 of the first elongate member 30, providing a variance in the width of the second elongate member 40 along the length dimension, between the drive mechanism 50 and the second bolt 12.

Fig 5A illustrates a plan view of the first embodiment of the espagnolette 10a. Fig 5B illustrates a cross-sectional view of the first embodiment of the espagnolette 10a through the line A-A in fig 5A. A cross-section of the drive arrangement 50 is illustrated in Fig 5B. The functionality of the drive arrangement 50 is best explained by reference to fig 1 and fig 5B.

The drive arrangement 50 is configured to simultaneously drive the first elongate member 30 along the channel 24 in a first direction and the second elongate member along the channel 24 in a second direction. In the illustrated example, the second direction is substantially opposite to the first direction, and each of the first direction and the second direction are aligned with the length dimension of the channel 24.

The drive arrangement 50 is further configured to simultaneously drive the first elongate member 30 along the channel 24 in the second direction and the second elongate member 40 along the channel 24 in a first direction.

The drive arrangement 50 comprises a housing 51, a cog 53, a first pinion 55, a second pinion 56, a first rack 57 and a second rack 58.

The housing 51 comprises two housing parts 51a, 51b. Each housing part 51a, 51b comprises protrusions 52 which engage with the channel lips 23 to hold the drive arrangement 50 in position against the elongate guide housing 20. Recesses 34, 44 are also provided in the first and second elongate members 30, 40 to accommodate the protrusions 52 in the channel 24.

The cog 53 is a quarter-circle cog comprising an aperture 54 for receiving a stem of a handle. Once the stem has been inserted into the aperture 54, rotation of the stem causes rotation of the cog 53 in the same direction. The cog 53 comprises a first set of projections 53a and a second set of projections 53b. The first set of projections 53a is arranged to engage directly with the first rack 57. The second set of projections 53b is arranged to engage with the pinions 55, 56.

The direct engagement of the cog 53 with the first rack 57 converts the rotational motion of the cog 53 into linear motion of the first rack 57. Rotation of the cog 53 in a clockwise direction, for example, results in linear movement of the first rack 57 in the first direction (+x direction in the figures).

Rotation of the cog 53 causes the pinions 55, 56 to rotate in the opposite direction to the cog 53. Rotation of the cog 53 in a clockwise direction causes the pinions 55, 56 to rotate in an anti-clockwise direction. The engagement of the pinions 55, 56 and the second rack 58 results in movement of the second rack 58 in the second direction (the -x direction in the figures), which is substantially opposite to the first direction. The first and second racks 57, 58 move simultaneously.

The first and second elongate members 30, 40 comprise recesses 33, 43 for receiving protrusions 57a, 58b in the racks 57, 58. This creates a coupling between the first rack 57 and the first elongate member 30, and a coupling between the second rack 58 and the second elongate member 40. Movement of the first rack 57 in the first (+x) direction therefore results in movement of the first elongate member 30 in the first direction and movement of the second rack 58 in the second (-x) direction therefore results in movement of the second elongate member 40 in the second direction. The first and second elongate members 30, 40 move simultaneously. Movement of the first elongate member 30 in the first direction and movement of the second elongate member 40 in the second direction moves the bolts 11-14 inwardly. The slots 15-18 in the elongate guide housing 20 are longer, in the length dimension, than the attachment portions 11a-14a of the bolts 11-14, enabling movement of the bolts 11-14.

The cog 53 is rotatable in both a clockwise direction and an anti-clockwise direction, enabling movement of the first and second racks 57, 58 to be reversed. Movement of the first rack 57 in the second direction results in movement of the first elongate member 30 in the second direction and movement of the second rack 58 in the first direction results in movement of the second elongate member 40 in the first direction. Movement of the first elongate member 30 in the second direction and movement of the second elongate member 40 in the first direction moves the bolts 11-14 outwardly.

As will be appreciated from the figures, the elongate members 30, 40 are situated in the same plane (defined by the x and z dimensions in the figures) and, when moved, slide alongside one another, remaining in that same plane.

Fig 6A illustrates a side elevation of the first embodiment of the espagnolette 10a. In fig. 6A, the espagnolette 10a is shown in a first locking configuration, as is the case in figs. 1 to 2C and 4A to 5B. Fig 6B illustrates a cross-sectional view of the first embodiment of the espagnolette 10a in the first locking configuration, through the lines C-C in fig 6A. The bolts 11-14 may be in their outermost position when the espagnolette 10a is in the first locking configuration.

The first locking configuration may, for example, represent a state in which the window or door to which the espagnolette 10a is attached is unsecured/unlocked.

Fig 6C illustrates a side elevation of the first embodiment of the espagnolette 10a in a second locking configuration. Fig 6C illustrates a cross-sectional view of the first embodiment of the espagnolette 10a in the second locking configuration, through the line D-D in fig 6C. The second locking configuration may, for example, represent a state in which the window or door to which the espagnolette 10a is attached is secured/locked. For example, the bolts 11-14 may have moved into keeps.

The espagnolette 10a is considered to be in the second locking configuration when the drive arrangement 50 has moved the bolts inwardly in the manner described above. For example, the espagnolette 10a may be considered to be in the second locking configuration when the bolts 11-14 have moved to their innermost position (i.e. the opposite end of the slot 15-18, relative to their position in the first locking configuration as shown in figs 6A and 6B).

As can best be understood by reference to fig. 4A, the recess 36 in the first elongate member 30 is dimensioned such that it is longer, in the length dimension, than the second bolt support 48 of the second elongate member 40. This enables the second bolt support 48 of the second elongate member 40 to move, within the recess 36, in the length dimension. The recess 46 in the second elongate member 40 is dimensioned such that it is longer, in the length dimension, than the first bolt support 37 of the first elongate member 30. This enables the first bolt support 37 of the first elongate member 30 to move, within the recess 46, in the length dimension.

The recesses labeled with the reference numerals 35a and 49a at the ends of the first and second elongate members 30, 40 are shaped to ensure that the elongate members 30, 40 do not interact with a fastener passing though the countersunk apertures 4, 7 at the ends of the elongate channel housing 20 when the espagnolette 10a is placed into the first locking configuration, as illustrated in fig. 6B.

The recesses labeled with the reference numerals 35b, 39, 45 and 49b are shaped to ensure that the elongate members 30, 40 do not interact with a fastener passing though the inner countersunk apertures 5, 6 of the elongate channel housing 20 when the espagnolette 10a is placed into the second locking configuration, as illustrated in fig. 6D.

Each of the recesses labeled with the reference numerals 34 and 44 are dimensioned such that it is longer, in the length dimension, than the protrusions 52 of the housing parts 51a, 51b. This enables the first and second elongate members 30, 40 to move in the channel 24 without being obstructed by the protrusions 52.

Fig 7A illustrates an underside view of a portion of the first embodiment of the espagnolette 10A. Fig 7B illustrates a cross-sectional view of the first embodiment of the espagnolette 10A through the line B-B in Fig 7A.

A cross-sectional view of the third and fourth countersunk apertures 6, 7 in the elongate guide housing 20 can be seen in fig. 7B. Each of the other countersunk apertures 4-7 has the same shape as that illustrated in fig 7B. It can be seen in fig 7B that the height of the countersunk apertures 6,7 is substantially the same as the height of the channel walls 22 (both heights are designated with the letter H in fig. 7B). For example, in some embodiments, the height of the countersunk apertures 4-7 might be within ± 0.5 millimeters of the height of the channel walls 22. In other embodiments, the height of the countersunk apertures 4-7 might be within ± 0.25 millimeters of the height of the channel walls 22. In further embodiments, the height of the countersunk apertures 4-7 might be within ±0.1 millimeters of the height of the channel walls 22.

It is advantageous for the height of the countersunk apertures 4-7 to be substantially the same as the height of the channel walls 22 because it makes the espagnolette 10a easier to fix into position. The channel lips 23 and the bottom edge of the countersunk apertures 4-7 rests firmly against a flat surface during fixing.

Fig 8A illustrates a plan view of a second embodiment of the espagnolette 10b with the elongate guide housing 20 removed. Fig 8B illustrates a plan view of the second embodiment of the espagnolette 10b. Fig 8C illustrates a side elevation of the second embodiment of the espagnolette 10b.

It can be seen in figs 8A, 8B and 8C that the second embodiment of the espagnolette 10b is longer than the first embodiment 10a illustrated in figures 1 to 7B, and that it comprises eight bolts 11-14, 111-114 rather than four bolts 11-14. The first elongate members 30a in the espagnolette 10b supports a first bolt 11, a third bolt 13, a fifth bolt 111 and a seventh bolt 113. The second elongate member 40a supports a second bolt 12, a fourth bolt 14, a sixth bolt 112 and an eighth bolt 114.

On one side of the drive arrangement 50 (positioned centrally, but not shown in fig. 8A) the second bolt 12, which is supported by the second elongate member 40a, is positioned between the first and fifth bolts 11, 111, which are supported by the first elongate member 30a. Furthermore, the fifth bolt 111, is positioned between the second bolt and sixth bolts 12, 112, which are supported by the second elongate member 40b.

On the other side of the drive arrangement 50, the third bolt 13, which is supported by the first elongate member 30a, is positioned between the fourth and eighth bolts 14, 114, which are supported by the second elongate member 40a. The eighth bolt 114 is positioned between the third and seventh bolts 13, 113, which are supported by the first elongate member 30a.

The drive arrangement 50 for the second embodiment of the espagnolette 10b may be the same as that described above in relation to the first embodiment, or that described later in relation to the third embodiment. The drive arrangement 50 is therefore configured to simultaneously drive the first elongate member 30a along the channel 24 defined by the elongate guide housing 20 in a first direction (the +x direction in figs 8A to 8C) and the second elongate member 40b along the channel 24 in a second direction (the -x direction) in figs 8A to 8C.

Figs 9 and 10 illustrate an exploded view and a perspective view of a third embodiment of the espagnolette 10c. The third embodiment of the espagnolette 10c is the same as the first embodiment, other than that the drive arrangement 50a has a different form and central portions of the first and second elongate members 30b, 40b, which engage with the drive arrangement 50a have a different form.

As can be seen best in fig 9, the drive arrangement 50a comprises a cog 53a and a single rack 59. Protrusions in the rack 59 are received by notches 214 in the first elongate member 30a. In use, a stem of a handle is inserted into an aperture 54 in the cog 53a. Rotation of the cog 53a causes lateral movement of the rack 59 in first and second directions aligned with the x axis in fig 9A (the first direction being in the +x direction and the second direction being in the -x direction). Lateral movement of the rack 59 causes lateral movement of the first elongate member 30a in the same direction.

The drive arrangement 50a further comprises pinions 62 which are positioned in the channel 24 of the elongate guide housing 20. Linear movement of the first elongate member 30b rotates the pinions 62, which causes the second elongate member 40b to move simultaneously with the first elongate member 30b, but in the opposite direction.

The engagement of the pinions 62 with the racks 60, 61 in the first and second elongate members 30b, 40b can best be seen in figs 11A and 11B. Fig 11A illustrates a plan view of the third embodiment of the espagnolette 10C with the elongate guide housing 20 removed. Fig 11B illustrates a plan view of the third embodiment of the espagnolette 10C with the elongate guide housing 20 partly cut away. Fig 11C illustrates a plan view of the third embodiment of the espagnolette 10C.

The inner workings ofthe drive arrangement 50a can also be seen in fig 12B, which illustrates a cross-sectional view of the third embodiment of the espagnolette 10c through the line B-B in fig 12A.

Figs 13A and 13B illustrate side and plan views of the third embodiment of the espagnolette 10c in a first locking configuration. Figs 13C and 13D illustrate side and plan views of the third embodiment of the espagnolette 10c in a second locking configuration.

Although embodiments of the present invention have been described in the preceding paragraphs with reference to various examples, it should be appreciated that modifications to the examples given can be made without departing from the scope of the invention as claimed.

Features described in the preceding description may be used in combinations other than the combinations explicitly described.

Although functions have been described with reference to certain features, those functions may be performable by other features whether described or not.

Although features have been described with reference to certain embodiments, those features may also be present in other embodiments whether described or not.

Whilst endeavoring in the foregoing specification to draw attention to those features of the invention believed to be of particular importance it should be understood that the applicant claims protection in respect of any patentable feature or combination of features hereinbefore referred to and/or shown in the drawings whether or not particular emphasis has been placed thereon.

l/we claim:

Claims

1. An espagnolette, comprising:

an elongate guide housing defining a channel having a length dimension; a drive arrangement coupled to the elongate guide housing; a first elongate member, extending along the channel in the length dimension from the drive arrangement, and supporting at least a first bolt; and a second elongate member supporting at least a second bolt, wherein the second elongate member extends along the channel in the length dimension from the drive arrangement beyond the first bolt, such that the first bolt is positioned between the drive arrangement and the second bolt in the length dimension; wherein:

the drive arrangement is configured to simultaneously drive the first elongate member along the channel in a first direction and the second elongate member along the channel in a second direction.

2. The espagnolette of claim 1, wherein the second direction is substantially opposite to the first direction.

3. The espagnolette of claim 2, wherein the first direction and the second direction are aligned with the length dimension.

4. The espagnolette of claim 1, 2 or 3, wherein the first bolt and the second bolt are substantially aligned in a second dimension defined by a width of the channel.

5. The espagnolette of any of the preceding claims, wherein the first elongate member comprises a bolt support for supporting the first bolt, and the second elongate member comprises a recess for accommodating the bolt support.

6. The espagnolette of claim 5, wherein the recess is longer in the length dimension than the bolt support to enable movement of the bolt support in the recess.

7. The espagnolette of any of the preceding claims, wherein the first bolt is attached to the first elongate member through a slot in the elongate guide housing.

5

8. The espagnolette of any of the preceding claims, wherein the second bolt is attached to the second elongate member through a slot in the elongate guide housing.

9. The espagnolette of any of the preceding claims, wherein the drive

10 arrangement is configured to simultaneously drive the first elongate member along the channel in the second direction and the second elongate member along the channel in the first direction.

10. The espagnolette of any of the preceding claims, wherein the elongate guide

15 housing comprises channel walls and channel lips which define the channel and retain the first and second elongate members in the channel.

11. The espagnolette of any of the preceding claims, wherein the elongate guide housing has a C-shaped cross-section.

12. The espagnolette of any of the preceding claims, wherein the first elongate member extends along the channel beyond the second bolt and supports a third bolt, wherein the second bolt is positioned between the first bolt and the third bolt in the length dimension.

13. The espagnolette of claim 12, wherein the second elongate member comprises a bolt support for supporting the second bolt, and the first elongate member comprises a recess for accommodating the bolt support.

30

14. The espagnolette of claim 13, wherein the recess is longer in the length dimension than the bolt support to enable movement of the bolt support in the recess.

15. The espagnolette of any of the preceding claims, wherein the elongate guide

35 housing comprises one or more countersunk apertures for mounting the espagnolette to a door or a window using one or more fasteners.

16. The espagnolette of claim 15, wherein at least one of the countersunk apertures is positioned, in the length dimension, between the first bolt and the second bolt.

5

17. The espagnolette of claim 16, wherein the second elongate member comprises a recess for the countersunk aperture positioned, in the length dimension, between the first bolt and the second bolt.

18. The espagnolette of any of claims 15 to 17, wherein the channel is at least

10 partly defined by channel walls, and the one or more countersunk apertures have a height corresponding with a height of the channel walls.

19. An espagnolette, comprising:

an elongate guide housing defining a channel having a length dimension;

15 first, second and third bolts;

a first elongate member, extending along the channel in the length dimension, and supporting at least the first bolt and the third bolt; and a second elongate member, extending along the channel in the length dimension, supporting at least the second bolt, wherein the second bolt is

20. An espagnolette, comprising:

an elongate guide housing comprising a channel floor and channel walls extending from the channel floor, wherein the channel floor and the channel

25 walls define a channel having a depth dimension, a width dimension and a length dimension, the channel floor defining the width dimension and the channel walls defining the depth dimension;

at least one elongate member positioned in the channel and arranged to slide along the channel in the length dimension; and

30 at least one countersunk aperture having a height corresponding with a height of the channel walls.

Intellectual

Property

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Application No: GB1702641.0 Examiner: Ben Munns

20 positioned between the first bolt and the third bolt in the length dimension.