GB2420823A - Shoot bolt mounting with adjustably projecting stop - Google Patents

Shoot bolt mounting with adjustably projecting stop Download PDF

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Publication number
GB2420823A
GB2420823A GB0426424A GB0426424A GB2420823A GB 2420823 A GB2420823 A GB 2420823A GB 0426424 A GB0426424 A GB 0426424A GB 0426424 A GB0426424 A GB 0426424A GB 2420823 A GB2420823 A GB 2420823A
Authority
GB
United Kingdom
Prior art keywords
fixed frame
shoot bolt
locking device
frame
bracket
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB0426424A
Other versions
GB0426424D0 (en
GB2420823B (en
Inventor
John Rogers
Paul Collins
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Avocet Hardware Ltd
Original Assignee
Avocet Hardware Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Avocet Hardware Ltd filed Critical Avocet Hardware Ltd
Priority to GB0426424A priority Critical patent/GB2420823B/en
Publication of GB0426424D0 publication Critical patent/GB0426424D0/en
Publication of GB2420823A publication Critical patent/GB2420823A/en
Application granted granted Critical
Publication of GB2420823B publication Critical patent/GB2420823B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
    • E05C9/00—Arrangements of simultaneously actuated bolts or other securing devices at well-separated positions on the same wing
    • E05C9/18—Details of fastening means or of fixed retaining means for the ends of bars
    • E05C9/1825—Fastening means
    • E05C9/1833—Fastening means performing sliding movements
    • E05C9/185—Fastening means performing sliding movements parallel with actuating bar
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B17/00—Accessories in connection with locks
    • E05B17/20—Means independent of the locking mechanism for preventing unauthorised opening, e.g. for securing the bolt in the fastening position
    • E05B17/2084—Means to prevent forced opening by attack, tampering or jimmying
    • E05B17/2088—Means to prevent disengagement of lock and keeper
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B17/00—Accessories in connection with locks
    • E05B17/20—Means independent of the locking mechanism for preventing unauthorised opening, e.g. for securing the bolt in the fastening position
    • E05B17/2084—Means to prevent forced opening by attack, tampering or jimmying
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
    • E05C9/00—Arrangements of simultaneously actuated bolts or other securing devices at well-separated positions on the same wing
    • E05C9/24—Means for transmitting movements between vertical and horizontal sliding bars, rods or cables for the fastening of wings, e.g. corner guides
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B63/00—Locks or fastenings with special structural characteristics
    • E05B63/0056—Locks with adjustable or exchangeable lock parts
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
    • E05C9/00—Arrangements of simultaneously actuated bolts or other securing devices at well-separated positions on the same wing
    • E05C9/04—Arrangements of simultaneously actuated bolts or other securing devices at well-separated positions on the same wing with two sliding bars moved in opposite directions when fastening or unfastening
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
    • E05C9/00—Arrangements of simultaneously actuated bolts or other securing devices at well-separated positions on the same wing
    • E05C9/06—Arrangements of simultaneously actuated bolts or other securing devices at well-separated positions on the same wing with three or more sliding bars
    • E05C9/063—Arrangements of simultaneously actuated bolts or other securing devices at well-separated positions on the same wing with three or more sliding bars extending along three or more sides of the wing or frame
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
    • E05C9/00—Arrangements of simultaneously actuated bolts or other securing devices at well-separated positions on the same wing
    • E05C9/18—Details of fastening means or of fixed retaining means for the ends of bars

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closing And Opening Devices For Wings, And Checks For Wings (AREA)
  • Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)

Abstract

A locking device (10) for mounting on two sides (11,12) of a rectangular frame (13) of an openable closure member which is intended to be mounted hingedly in a fixed frame (14) for movement between open and closed positions with respect to the fixed frame (14), in which the device (10) comprises: ```an elongate mounting plate (15) receivable by a mounting groove (16) provided on one side (11) of same rectangular frame (13); ```a shoot bolt (17) slidably mounted on said mounting plate (15) for longitudinal movement between a withdrawn, inoperative, position and an extended, operative, position of engagement with a corresponding keeper (18) in the fixed frame (14) in order to lock the rectangular frame (13) to the fixed frame (14); ```an angle bracket (19) at one end of the mounting plate (15) which is securable to an adjacent side (12) of the rectangular frame (13); ```a housing (20) defined by the bracket (19) to guide the movement of the shoot bolt (17) between its withdrawn and its extended positions, said housing (20) having a shoot bolt clearance (21) between itself and the keeper (18) on the fixed frame (14), upon assembly of the rectangular frame (13) in the fixed frame (14), and which is bridged by the shoot bolt (17) when in its operative position; and ```a stop (22) mounted on or adjacent to the angle bracket (19) so as to project from the bracket (19) in the same general direction as the axis of the shoot bolt (17) and towards the fixed frame (14), said stop (22) being adjustable towards the fixed frame in order to compensate at least partly for the shoot bolt clearance (21) and thereby resist in use any attempt at forced separation between the shoot bolt (17) and the keeper (18) in a direction generally parallel to the axis of the shoot bolt.

Description

* 2420823 ADJUSTABLE STOP FOR OPENABLE WINDOW/DOOR This invention relates
to a locking device for mounting on two sides of a rectangular frame of an openable closure member which is intended to be mounted hingedly in a fixed frame for movement between open and closed positions with respect to the fixed frame.
The frames of windows and doors are often manufactured by extruded PVCU material, and which have the manufacturing advantage of easy repeatable production to meet required manufacturing tolerances, plus the advantage to the customer of low maintenance costs.
However, an extruded PVCU section, which is usually hollow, has a degree of flexibility, and which renders such section vulnerable to attempts at forced opening of a window unit from the fixed frame in which it is mounted. Thus, the flexibility of the section, either in the fixed frame and/or the frame of the openable unit (window/door), allows it to yield in a direction laterally of its longitudinal axis, to such an extent that any latches, locks etc. provided to hold the unit in the closed position may become separated from the respective keepers, and then allow easy opening of the unit.
With a view to counteracting such a problem, it is usual to instal metal inserts in the hollow sections at positions where increased strength and rigidity is required. Also, in addition to provision of lockable catches, it is usual to fit espagnolette type fittings on the edges of windows and door frames, and which mate, upon actuation, with suitable keepers mounted on the fixed frame.
However, to provide still further increased security, it is known also to fit s-called "shoot bolts" and which comprise rod-like bolts which move linearly between a withdrawn inoperative position in which they are housed within the hollow section of the moveable frame (of the door or window) and extended operative positions in which they project from the sections to be received by keepers in the surrounding fixed frame.
The usual locking cams or cylinders of the espagnelette fitting mainly provide resistance to forced lateral separation of the moveable frame section from the fixed frame, i.e. in a direction perpendicular to the plane of the closure member, whereas they only provide small resistance to forced separation in the plane of the closure member.
However, with a shoot bolt penetrating deeply into suitably reinforced keeper holes in the fixed frame, there can be substantial resistance to any attempt at forced separation of a moveable frame section (of a closure member) from the fixed frame, both in a direction perpendicular to the plane of the closure member, but also in the plane of the closure member when it is perpendicular to the axis of the shoot bolt.
However, a shoot bolt can be vulnerable to forced separation between the moveable frame section and the fixed frame when a separating force, e.g. by use of ajemmy, is applied in a direction generally parallel to the axis of the shoot bolt (and also generally in the plane of the closure member) and particularly if there is substantial clearance between the fixed frame and the mouth of the housing from which the shoot bolt extends when in its operative extended position. Evidently, in such a situation, forced separation between the moveable section and the fixed frame may be sufficient to withdraw the shoot bolt from its keeper.
While it is usual to fit shoot bolts in pairs at opposite sides of a frame, so that forced withdrawal of one shoot bolt will still leave the moveable frame section held by the remaining shoot bolt, this will not usually provide large resistance to subsequent forced separation of the remaining shoot bolt in an opposite direction.
Also, in a tandem shoot bolt arrangement, clearances between each shoot bolt housing and the fixed frame are additive, in the sense that both clearances permit forced distortion of the moveable frame in one direction, such as first to allow forced withdrawal of one shoot bolt, followed by distortion in an opposite direction to allow forced withdrawal of the other shoot bolt.
Therefore, while manufacture of extruded PVCU sections can be carried out on a mass production basis to provide a generally acceptable product, it can be the case that excessive clearances exist in the assembly of shoot bolts on the moveable frame and between the shoot bolt housings and the fixed frame, so as to render a window or door assembly vulnerable to attack in this way.
This is a well recognised problem in the window/door industry, and indeed there is a British Standard test which has been developed with a view to address this problem. This test applies standard separating loads along the axis of a shoot bolt, with a view to determining whether or not a particular window/door frame and fixed frame assembly is acceptable.
The present invention seeks to address this problem in a simple but effective manner, byproviding a stop assembly which is readily adjustable to compensate for any small deviation from acceptable shoot bolt clearances and/or misalignment during assembly, and thereby meet the standard test and provide an acceptable assembled product.
According to the invention there is provided a locking device for mounting on two sides of a rectangular frame of an openable closure member which is intended to be mounted hingedly in a fixed frame for movement between open and closed positions with respect to the fixed frame, in which the device comprises: an elongate mounting plate receivable by a mounting groove provided on one side of same rectangular frame; a shoot bolt slidably mounted on said mounting plate for longitudinal movement between a withdrawn, inoperative, position and an extended, operative, position of engagement with a corresponding keeper in the fixed frame in order to lock the rectangular frame to the fixed frame; an angle bracket at one end of the mounting plate which is securable to an adjacent side of the rectangular frame; a housing defined by the bracket to guide the movement of the shoot bolt between its withdrawn and its extended positions, said housing having a shoot bolt clearance between itself and the keeper on the fixed frame, upon assembly of the rectangular frame in the fixed frame, and which is bridged by the shoot bolt when in its operative position; and a stop mounted on or adjacent to the angle bracket so as to project from the bracket in the same general direction as the axis of the shoot bolt and towards the fixed frame. Said stop being adjustable towards the fixed frame in order to compensate at least partly for the shoot bolt clearance and thereby resist in use any attempt at forced separation between the shoot bolt and the keeper in a direction generally parallel to the axis of the shoot bolt.
The adjustable stop therefore can be adjusted to any required extent upon initial assembly, to compensate for variation in design clearance of any particular pair of fixed frame, and moveable frame components, so as to meet the required test standard.
In a simple and preferred embodiment, the adjustable stop is a headed threaded adjuster.
Preferably, the angle bracket is formed in one piece with the mounting plate so as to form a unitary L-shaped member.
The housing in the angle bracket may comprise a simple trough-like recess, into which the engaging head of the adjustable stop can be withdrawn when in its inoperative position, and from which the engaging head can project when in its operative position.
Preferably, a pair of oppositely acting shoot bolts are provided, operated by a common actuator handle or the like, to move jointly between withdrawn and extended positions.
The invention may be applied to all types of openable doors and windows.
A preferred embodiment of a locking device according to the invention will now be described in detail, by way of example only, with reference to the accompanying drawings, in which: figure 1 is a partial perspective view of an openable window unit and a fixed frame on which it is hingedly mounted, these components being shown in a partly open position, and on which a locking device according to the invention is mounted on two adjacent sides of a rectangular frame of the window unit; figure 2 is a side view showing in more detail the locking device, with a shoot bolt mechanism of the locking device shown in an extended operative position of engagement with a keeper in the fixed frame; and figures 3a and 3b are, respectively, side and perspective views of the locking device alone.
Referring now to the drawings, a locking device (10) is provided for mounting on two sides (11,12) of a rectangular frame (13) of an openable closure member (window or door), which is intended to be mounted hingedly in a fixed frame (14) for movement between open and closed positions with respect to the fixed frame (14).
The locking device comprises an elongate mounting plate (15) which is received by a mounting groove (16) provided on one side (11) of the rectangular frame (13), and a shoot bolt (17) is slidably mounted on the mounting plate (15) for longitudinal movement between a withdrawn, inoperative, position and an extended, operative, position of engagement with a corresponding keeper (18) in the fixed frame (14), in order to lock the rectangular frame (13) to the fixed frame (14).
An angle bracket (19) is provided at one end of the mounting plate (15), and which is securable to an adjacent side (12) of the rectangular frame (13). In the illustrated embodiment, the angle bracket (19) is formed in one piece with the mounting plate (15) to form a unitary structure.
A housing (20) is defined by the bracket (19) to guide the movement of the shoot bolt (17) between its withdrawn and its extended positions, such housing having a shoot bolt clearance (21) between itself and the keeper (18) on the fixed frame (14). In the operative position of the shoot bolt (17), as shown in figures 2 and 3a, the shoot bolt clearance (21) is bridged by the shoot bolt (17), with an engaging head (23) of the shoot bolt fully received by thekeeper(l8).
A stop (22) is mounted on the angle bracket (19) so as to project from the bracket (19) in the same general direction as the axis of the shoot bolt(17) and towards the fixed frame (14).
The stop (22) is adjustable towards the fixed frame in order to compensate at least partly for the shoot bolt clearance (21) and thereby resist in use any attempt at forced separation between the shoot bolt (17) and the keeper (18) in a direction generally parallel to the axis of the shoot bolt (17).
In the illustrated embodiment, the adjustable stop (22) comprises a headed threaded adjuster.
The angle bracket (19) comprises a simple trough-like recess into which the head of the adjuster (22) can be withdrawn when in its inoperative position, and from which the engaging head (22) can project when in its operative position.
Usually a pair of oppositely acting shoot bolts will be provided, operated by a common actuator handle and the like to move jointly between withdrawn and extended positions, and each having corresponding adjustable stop arrangement to take up shoot bolt clearance.

Claims (6)

1. According to the present invention, there is provided a locking device (10) for mounting on two sides (11,12) of a rectangular frame (13) of an openable closure member which is intended to be mounted hingedly in a fixed frame (14) for movement between open and closed positions with respect to the fixed frame (14), in which the device (10) comprises: an elongate mounting plate (15) receivable by a mounting groove (16) provided on one side (11) of same rectangular frame (13); a shoot bolt (17) slidably mounted on said mounting plate (15) for longitudinal movement between a withdrawn, inoperative, position and an extended, operative, position of engagement with a corresponding keeper (18) in the fixed frame (14) in order to lock the rectangular frame (13) to the fixed frame (14); an angle bracket (19) at one end of the mounting plate (15) which is securable to an adjacent side (12) of the rectangular frame (13); a housing (20) defined by the bracket (19) to guide the movement of the shoot bolt (17) between its withdrawn and its extended positions, said housing (20) having a shoot bolt clearance (21) between itself and the keeper (18) on the fixed frame (14), upon assembly of the rectangular frame (13) in the fixed frame (14), and which is bridged by the shoot bolt (17) when in its operative position; and a stop (22) mounted on or adjacent to the angle bracket (19) so as to project from the bracket (19) in the same general direction as the axis of the shoot bolt (17) and towards the fixed frame (14), said stop (22) being adjustable towards the fixed frame in order to compensate at least partly for the shoot bolt clearance (21) and thereby resist in use any attempt at forced separation between the shoot bolt (17) and the keeper (18) in a direction generally parallel to the axis of the shoot bolt.
2. A locking device according to claim 1, in which the angle bracket (19) is formed in one piece with the mounting plate (15) so as to form a unitary L-shaped member.
3. A locking device according to claims 1 or 2, in which the adjustable stop (22) can be mounted on the keeper (18) in a direction generally parallel to the axis of the shootbolt 17.
4. A locking device according to claim 3, in which the bracket (19) comprises a trough- like recess in which the head of the stop (22) can be withdrawn when in its inoperative position, and from which the engaging head can project when in its operative position.
5. A locking device according to any one of the preceding claims, and comprising a pair of oppositely acting shoot bolts, operable by a common actuator handle or the like, to move jointly between withdrawn and extended positions.
6. An openable door or window frame provided with a locking device according to any one of the preceding claims.
6. An openable door or window frame provided with a locking device according to any one of the preceding claims. Cl
Amendments to the claims have been filed as follows
1. A locking device (10) for mounting on two sides (11,12) of a rectangular frame (13) of an openable closure member which is intended to be mounted hingedly in a fixed frame (14) for movement between open and closed positions with respect to the fixed frame (14), in which the device (10) comprises: an elongate mounting plate (15) receivable by a mounting groove (16) provided on one side (11) of same rectangular frame (13); a shoot bolt (17) slidably mounted on said mounting plate (15) for longitudinal movement between a withdrawn, inoperative, position and an extended, operative, position of engagement with a corresponding keeper (18) in the fixed frame (14) in order to lock the rectangular frame (13) to the fixed frame (14); an angle bracket (19) at one end of the mounting plate (15) which is securable to an adjacent side (12) of the rectangular frame (13); a housing (20) defined by the bracket (19) to guide the movement of the shoot bolt (17) between its withdrawn and its extended positions, said housing (20) having a shoot bolt clearance (21) between itself and the keeper (18) on the fixed frame (14), upon assembly of the rectangular frame (13) in the fixed frame (14), and which is bridged by the shoot bolt (17) when in its operative position; and a stop (22) mounted on or adjacent to the angle bracket (19) so as to project from the bracket (19) in the same general direction as the axis of the shoot bolt (17) and towards the fixed frame (14), said stop (22) being adjustable towards the fixed frame in order to compensate at least partly for the shoot bolt clearance (21) and thereby resist in use any attempt at forced separation between the shoot bolt (17) and the keeper (18) in a direction generally parallel to the axis of the shoot bolt.
2. A locking device according to claim 1, in which the angle bracket (19) is formed in one piece with the mounting plate (15) so as to form a unitary L-shaped member.
3. A locking device according to claims 1 or 2, in which the adjustable stop (22) can be mounted on the keeper (18) in a direction generally parallel to the axis of the shootbolt 17.
4. A locking device according to claim 3, in which the bracket (19) comprises a trough- like recess in which the head of the stop (22) can be withdrawn when in its inoperative position, and from which the engaging head can project when in its operative position.
5. A locking device according to any one of the preceding claims, and comprising a pair of oppositely acting shoot bolts, operable by a common actuator handle or the like, to move jointly between withdrawn and extended positions.
GB0426424A 2004-12-02 2004-12-02 Adjustable stop for openable window/door Expired - Fee Related GB2420823B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0426424A GB2420823B (en) 2004-12-02 2004-12-02 Adjustable stop for openable window/door

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0426424A GB2420823B (en) 2004-12-02 2004-12-02 Adjustable stop for openable window/door

Publications (3)

Publication Number Publication Date
GB0426424D0 GB0426424D0 (en) 2005-01-05
GB2420823A true GB2420823A (en) 2006-06-07
GB2420823B GB2420823B (en) 2008-07-09

Family

ID=34043910

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0426424A Expired - Fee Related GB2420823B (en) 2004-12-02 2004-12-02 Adjustable stop for openable window/door

Country Status (1)

Country Link
GB (1) GB2420823B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2474672A (en) * 2009-10-22 2011-04-27 Lssd Uk Ltd Shoot bolts having keep engaging projections
CN111902593A (en) * 2018-02-28 2020-11-06 丝吉利娅-奥彼两合公司 Window or door

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2474672A (en) * 2009-10-22 2011-04-27 Lssd Uk Ltd Shoot bolts having keep engaging projections
GB2474672B (en) * 2009-10-22 2015-07-01 Grouphomesafe Ltd Shoot bolts having keep engaging projections
CN111902593A (en) * 2018-02-28 2020-11-06 丝吉利娅-奥彼两合公司 Window or door
CN111902593B (en) * 2018-02-28 2022-02-01 丝吉利娅-奥彼两合公司 Window or door

Also Published As

Publication number Publication date
GB0426424D0 (en) 2005-01-05
GB2420823B (en) 2008-07-09

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PCNP Patent ceased through non-payment of renewal fee

Effective date: 20091202