GB2294291A

GB2294291A - Shoot bolt security device

Info

Publication number: GB2294291A
Application number: GB9521444A
Authority: GB
Inventors: Graham H Penny; John Crookes
Original assignee: J K FURNEX Ltd
Current assignee: J K FURNEX Ltd
Priority date: 1994-10-19
Filing date: 1995-10-19
Publication date: 1996-04-24
Anticipated expiration: 2015-10-19
Also published as: GB9521444D0; GB9421097D0; GB2294291B

Abstract

A mechanism for coverting rotary movement of a handle (22) into linear movement of at least one shoot bolt (32) is housed within the handle assembly. The shoot bolt (32) security device is for locking a window (20) or door to its surrounding frame (not shown). In the preferred embodiment when the handle (22) is turned a cog (not shown) revolves causing two lugs (not shown) to move in opposite directions. The lugs are formed to fit into reception ports (54) which in turn slide the location plates (28) and then move the connecting rods (32) which shift the shoot bolts (32). <IMAGE>

Description

Security Bolt Device The invention which is the subject of this application relates to a locking shoot bolt device provided to be fitted as part of a window or door. The device includes several parts assembled to be movable between a position where the bolts are in a locking position to prevent the window or door sash from being opened, and a position where the bolts are retracted thereby allowing the sash to be opened. This movement is provided by the turning of a handle mounted on the sash and hereinafter reference to "sash" should be read as meaning a window sash in a window frame or a door in a door frame.

The device is of particular use in relation to double glazing window or door units. The device is provided with connecting rods and shoot bolts which fit into the profile of an edge of the sash, and typically the vertical edge opposed to the hinges on the sash. The shoot bolts are provided to protrude from the bottom and top edges of the sash in a first, locking position thereby allowing the sash to be locked in a closed position with the ends of the shoot bolts engaged with locking points fixed to the frame. The shoot bolts are movable by turning the sash handle, to a position where they are retracted within the sash allowing the sash to be opened as required.

Shoot bolt devices and arrangements of this type are known and currently available. In a known form the handle is mounted on the surface of the sash facing towards the user, typically at least the face of the sash facing internally of the user and is provided with a length of metal of square cross section which connects with a gearing arrangement which is mounted in a specially formed aperture in the edge of the sash. Connected to and extending from the gearing arrangement in opposed directions along the edge of the sash are connecting rods which connect the shoot bolts mounted at the top and bottom ends of the sash edge, to the movement of the gearing arrangement and hence the handle.

In all known arrangements only the handle of the device is mounted on the surface of the sash, all of the other components being mounted on the edge of, or in the sash such that when the sash is in the closed position the components, with the exception of the handle, are inaccessible. The first problem of this arrangement is that if for any reason the components and in particular the gearing arrangement become jammed or break and the sash is in the closed position no access can be gained to attempt to repair the same. This means that as the shoot bolts are in the locking position the sash cannot then be opened and no repairs can take place and the destruction of the sash and/or frame is required in order to open the same.

Secondly, as the gearing arrangement is required to be housed within the sash a specially formed aperture is required to be formed in the profile of the edge of the sash. This leads to the requirement for more expensive and complex machining operations to be performed on the profile of the edge of the sash to form the aperture required.

When fitting the components of the known devices, difficulties are caused due to the required location of the connecting rods and shoot bolts in the edge of the sash.

These problems are largely due to the fact that there are many different forms of edge profiles for sashes and although some of the known devices may be fitted in one or two of the profile shapes without alteration, in no circumstances can they be fitted without adjustment or machining of the components of the device and/or profiles, to all of the profiles which are commonly used. Thus, there is not presently available any universal device which can be easily fitted to all of the edge profiles currently available.In particular, the fact that the distance and relative positions between the gearing arrangement, connecting rods and handle is critical to ensure translation of movement and cannot be altered without altering the components of the device, causes difficulties in ensuring that the device will still operate correctly and that the transfer of movement between the handle and the shoot bolts is still achieved.

All of these limitations are encountered when known devices are fitted to the sashes in the form of windows and doors and the expense of fitting the same is greater than desired. The aim of the present invention is to provide a shoot bolt locking device which can be fitted to a sash having any of the available profile designs such as those known in the trade as Eurogroove, Half Eurogroove and non-Eurogroove profiles.

The present invention relates to a security bolt device for use on a sash and surrounding frame, said device mounted on the sash and incorporating at least one shoot bolt and a handle, said shoot bolt movable between a first position in which the same engages with fixed location means on the frame, and a second, retracted and disengaged position by turning of the handle relative to the sash, said device including a mechanical arrangement for translating movement of the handle to movement of the shoot bolt and wherein said mechanical arrangement is housed within the handle assembly.

Preferably two shoot bolts are provided and arranged such that upon movement of the handle they move in opposing linear directions.

Typically the handle is mounted on a face of the sash and both the handle and mechanical arrangement are mounted on the face of the sash. Typically the mechanical arrangement includes at least one cog wheel for rotation upon turning of the handle and translates the rotational movement into linear movement. Said linear movement is typically transferred to connecting rods which in turn transfer the movement to the shoot bolts. Preferably the mechanical arrangement includes at least two protruding drive lugs movable linearly in opposed directions upon rotational movement of the handle.

The drive lugs engage with the connecting rods to provide movement of the shoot bolts in opposed directions upon movement of the handle.

Typically rotation of the handle in clockwise and anti-clockwise directions causes reciprocal movement of the drive lugs and the shoot bolts.

In one form the drive lugs are formed to fit into reception ports provided in a housing with movable location plates to which the connecting rods are attached. In an alternative embodiment the drive lugs are threaded rods which are screwed into threaded holes in a housing to which the connecting rods are attached.

Typically the handle assembly is mounted on the surface of the sash and the mechanical arrangement is housed therein such that it is also provided on the face and is accessible for repair and/or maintenance as required. The handle assembly also preferably includes a lock so as to prevent unauthorised movement of the handle.

The handle and mechanical arrangement are provided as an integral unit and are fitted to a face of a sash, said face having two slots formed therein to accommodate the drive lugs and movement of the same.

The connecting rods and shoot bolts are mounted, in one embodiment, in a longitudinal groove in a profile formed along an edge of the sash, said bolts and connecting rods mounted to lie substantially flush with the surface of the edge of the sash. Typically the shoot bolts, in the locking position, engage with fixed location means which in one embodiment are attached to the top and bottom of the frame surrounding the sash. Typically the location means are metal brackets screwed or otherwise affixed to the frame.

Preferably the position of the connecting rods and shoot bolts relative to the handle and mechanical arrangement is adjustable thereby allowing the device to be fitted into a profile of the sash edge regardless of the actual position and depth of the profile relative to the handle assembly.

In one aspect of the invention there is provided an integral handle and mechanical arrangement mounted on the face of a sash, said handle provided with at least two drive lugs provided to pass into the sash to connect with a location plate mounted in the edge profile of the sash and wherein the location points for securing screws for both the handle and the location plate are elongate in form to allow adjustment of the position of the handle relative to the edge of the sash.

Typically the length of the slots in the handle and locating plate are such as to allow the position of the handle and/or locating plate to be adjusted in relation to the required backset measurement of the handle from the edge of the sash to suit particular sashes and profiles. Typically the range of backsets which can be accommodated is from 19-25 mm. The provision of slotted points allows the fitting of the components to the sash to be considerably simplified and allows tooling jigs and settings for drilling holes for the securing means to be kept constant even when the backset measurements are required to be altered.

Typically the length of the connecting rods and/or shoot bolts are altered to suit the type of profile in which they are fitted and the sash size. Typically the length is adjusted by cropping the same to the required lengths using a cropping tool.

In a further aspect of the invention there is provided a handle for use in providing movement of the shoot bolts or a security device wherein said handle includes a mechanical arrangement in a housing as an integral part thereof.

In a further aspect of the invention there is provided a shoot bolt security device for use fitted to a sash, said device including at least two shoot bolts, each movable between a first position in which the same locate with fixed location means external of the sash and a second, retracted position so that the sash is movable and wherein the device includes a mechanical arrangement as part of the handle and includes drive lugs which pass through to locating plates which in turn actuate the shoot bolts.

Specific embodiments of the invention are now described with reference to the accompanying drawings wherein; Figures lA-lC illustrate conventional sash profiles; Figure 2 relates to a known shoot bolt locking device; Figure 3 illustrates a shoot bolt locking device of a first embodiment of the invention fitted to a sash of a window; Figures 4A, 4B show the interrelationship of the mechanical arrangement and the handle of Figure 3; Figure 5 shows in plan the connecting rod and shoot bolts arrangement of the first embodiment of the invention; Figure 6 illustrates a plan of the handle according to a second embodiment; Figure 7 illustrates a plan of the handle according to the second embodiment; and Figure 8 shows the location plates, housing, connecting rods and shoot bolts of the second embodiment.

Referring to Figures lA-lC there are shown a series of profiles of the edges of known double glazing window sashes.

Figure 1A illustrates the profile known as Eurogroove profile with the Eurogroove indicated by the reference numeral 1. In Figure 1B there is shown a Half Eurogroove profile with the half Eurogroove indicated by the numeral 1' and in Figure 1C a non-Eurogroove profile is shown at 1''. In each case the shoot bolts and connecting rods of the invention are located in the positions indicated by the reference numerals 1, 1' and 1'', depending on the particular type of profile to which they are fitted. Furthermore the positioning of the location grooves 1, 1' and 1'' differ along the profile.

Referring now to Figure 2 there is shown a locking device 2 which is known. This device comprises a handle (not shown) which has a square section length 4 which engages in a port 6 in a gearbox assembly 8 mounted in the edge profile of the sash. The length 4 is connected to the axis of rotation of the handle such that rotation of the handle causes rotation of the length 4, port 6 and movement in the gearbox assembly 8. The gearbox assembly 8 is provided with, at each end thereof and running longitudinally of the same, arms 10 which are connected to connecting rods at the ends remove from the gearbox housing 8 are shoot bolts 16. When mounted on the profile edge of a sash the shoot bolts are movable to an extended first position wherein the same engage with location means 18 which are screwed or otherwise affixed into the frame adjacent the sash.When in this position the shoot bolts act to lock the sash in the closed position and thereby prevent unauthorised opening of the sash. All of the components shown are fitted to or in the edge of a sash such as a window or door frame and only the handle is accessible, the handle being mounted in a plane perpendicular to the plane of movement of the other components on a surface of the sash facing the user.

Figure 3 illustrates a device of the invention in position for use on a window sash. On the surface 20 of the sash facing the user the handle 22 is mounted and, as part of the handle, a mechanical gearing arrangement 24 is formed.

Extending from the mechanical arrangement 24 into slotted apertures provided in the sash are drive lugs 26 which in turn pass into reception ports in location plates 28 in a housing 29. The location plates are movable as shown by arrows 30 upon urging by the drive lugs 26 and this movement is transferred onto connecting rods 32 which, in turn are connected to, or formed integrally with, shoot bolts 34 which, in this embodiment, are shown in an extended locking position. The shoot bolts 34 are movable as shown by arrows 36 from the extended first position to a retracted second position such that the sash is unlocked and can be opened by moving the same around hinges 38.

Referring now to Figures 4A and 4B the relationship between the handle and mechanical arrangement in a first embodiment is shown wherein the handle 22 includes a lock 40 fitted in conventional manner and a pivotal axis 42 which includes a length 44 connected to a cog wheel 46 in the housing 24 which forms part of the mechanical arrangement. The cog wheel meshes with rods 48,50 shown in Figure 3B. The rods are provided with teeth for engagement with the cog so that rotation of the handle and hence the cog causes linear movement of the rods in relatively opposing directions along the longitudinal axis of the housing 24. Each of the rods 48,50 is connected to at least one drive lug 26 and each movement of the rods causes the lugs to move.The lugs are shown in the position wherein the shoot bolts are in a first locking position and the drive lugs in the second position are shown in broken lines. The movement is achieved by rotation of the handle 22 and when the handle is moved to the horizontal plane the shoot bolts are retracted. The position of the handle 22 and the housing 24 in relation to the surface 20 of the window is shown in Figure 4A and the drive lugs 26 pass through slots 31 into the location plates 28.

The slots are of sufficient length to allow the lugs to move between the two extreme positions.

Figure 5 illustrates the arrangement between the housing 29, connecting rods 32 and connected or integral shoot bolts 34, all of which are mounted in the profile edge of the sash.

The housing 29 is shown to have reception ports 54 in the location plates 28 into which the drive lugs of the handle fit. Thus when the drive lugs 26 of the handle are moved so the location plates 28 slidably move within the housing 29.

The housing 29 also includes longitudinal channels 58 in which the connecting rods 32 move when actuated by the reception port members 56. The path and extent of movement of the connecting rods is also controlled by pins 60 which are mounted in the channels 58 and attached to the connecting rods 32. The connecting rods 32 are each attached at the ends remote from the housing 28 to shoot bolts 34. The length of the shoot bolts required is dependent upon the size of sash to which the same are fitted and the bolts can therefore be cropped to the required length before assembly.

An important feature of the invention is that the handle and housing be dimensioned as closely as possible to existing handles. Figure 6 shows a second embodiment of a locking device according to the invention where the handle housing 24 is considerably smaller and more aesthetically pleasing. The drive lugs 26 still protrude in the manner as described for Figure 4A and 4B and the handle is still connected to a cog 46 which when rotated causes linear movement of the two rods 48,50 and hence the drive lugs 26. In this case the housing includes securing apertures 70 as shown in Figures 6 and 7 which are slotted. The securing locations are for the provision of screws which pass there through to secure the handle and housing to the face of the sash.

The location plate housing 29, connecting rods 32 and shoot bolts 34 which are located on the edge profile of the sash are shown in Figure 8. In this embodiment the securing apertures 72 for the housing are also slotted. The provision of slotted securing apertures for both the handle and the housing 28 allows the components to be fitted to different shaped profiles such as those in Figures 1A-1C and for use where the backset of the handle on the sash from the edge of the same is required to be adjusted. Typically a range of backset positions from 19 to 25 mm can be accommodated by providing the slotted securing means thereby allowing the components to be used, without alteration, for any backset position in the range. This is a distinct advantage over known devices which have to be formed and altered to suit particular set backset positions.

Thus the current invention provides a shoot bolt device which can be used in whichever embodiment is specified in locking a sash in a closed position relative to the surrounding frame.

The device of the invention has increased flexibility in that it can be fitted with ease and regardless of the particular profile of the edge of the sash to which the same is to be fitted. This increased flexibility and the ability access and to repair or service the mechanical arrangement is achieved as no connecting rod is required between the handle and a remote mechanical gearing arrangement as, in the invention, the mechanical arrangement is provided as part of the handle assembly on the surface of the sash as opposed to on the profile as in the conventional devices.

Claims

1. A security bolt device for use on a sash and surrounding frame, said device mounted on the sash and incorporating at least one shoot bolt and a handle, said shoot bolt movable between a first position in which the same engages with fixed location means on the frame, and a second, retracted and disengaged position, said shoot bolt movable by turning of the handle relative to the sash and said device including a mechanical arrangement for translating movement of the handle to movement of the shoot bolt and wherein said mechanical arrangement is housed within the handle assembly.

2. A security bolt device according to Claim 1 wherein two shoot bolts are provided and arranged such that upon movement of the handle the shoot bolts move in opposing linear directions along the sash.

3. A security bolt device according to Claim 1 wherein the handle and mechanical arrangement are mounted on a face of the sash.

4. A security bolt device according to any of the preceding claims wherein the mechanical arrangement includes at least one cog wheel for rotation upon turning of the handle.

5. A security bolt device according to any preceding claim wherein the mechanical arrangement includes linearly movable means in the form of two protruding drive lugs linearly movable in opposing directions upon rotational movement of the handle.

6. A security bolt device according to Claim 5 wherein rotation of the handle in clockwise and anti-clockwise directions causes reciprocal movement of the drive lugs, connecting rods and shoot bolts.

7. A security bolt device according to Claim 5 wherein the drive lugs are formed to fit into reception ports provided in the housing with movable location plates to which the connecting rods are attached.

8. A security bolt device according to Claim 5 wherein the drive lugs are threaded rods which are screwed into threaded holes in a housing to which the connecting rods are attached.

9. A security bolt device according to any of Claims 5 to 8 wherein the drive lugs protrude from the mechanical arrangement into the sash when fitted to engage with the connecting rods and/or short bolts on the edge of the sash.

10. A security bolt device according to any of the preceding claims wherein the handle includes a lock so as to prevent unauthorised movement of the handle.

11. A security bolt device according to any of the preceding claims wherein the handle and mechanical arrangement are provided as an integral unit and fitted to the face of the sash with two slots formed therein to accommodate drive lugs and movement of same within the sash.

12. A security bolt device according to any preceding claim wherein the connecting rods and shoot bolts are mounted in the longitudinal groove in a profile formed along the edge of the sash, said bolts and connecting rods mounted to lie substantially flush with the surface of the edge of the sash.

13. A security bolt device according to Claim 1 wherein the fixed location means are attached to the top and bottom of the frame surrounding the sash.

14. A security bolt device according to Claim 12 wherein the location means are metal brackets screwed or otherwise affixed to the frame.

15. A security bolt device according to any preceding claim wherein the position of the connecting rods and shoot bolts relative to the handle and mechanical arrangement is adjustable to allow the device to be fitted to a profile of a sash edge regardless of the actual shape and depth of the profile relative to the face of the sash to which the handle and mechanical arrangement are fitted.

16. A security bolt device according to any preceding claim comprising an integral handle and mechanical arrangement mounted on the face of a sash, said handle provided with at least two drive lugs provided to pass into an aperture or apertures in the sash to connect with a location plate fitted in the edge profile of the sash and wherein the location points for securing screws for both the handle and the location plate are elongate slots.

17. A security bolt device according to claim 16 wherein the length of the slots in the handle and locating plates allow the position of the handle and/or locating plate to be adjusted to suit the required backset measurement of the handle from the edge of the sash to suit particular sash and profile sizes.

18. A shoot bolt device according to to Claim 17 wherein the range of backset measurement is 19 to 25 mm.

19. An openable door or window incorporating a shoot bolt security device, said device including at least two shoot bolts, each movable between a first position in which the same locate with fixed location means fitted to the frame surrounding the door or window and a second, retracted position so that the door or window can be opened and closed and wherein the shoot bolt security device includes a mechanical arrangement as part of the handle and includes drive lugs which pass through to locating plates and connecting rods which in turn actuate the shoot bolts.

20. A security bolt device as hereinbefore described with reference to the accompanying drawings.