AU2009202246C1

AU2009202246C1 - A mortice lock

Info

Publication number: AU2009202246C1
Application number: AU2009202246A
Authority: AU
Inventors: Martin Goetz
Original assignee: Assa Abloy Australia Pty Ltd
Current assignee: Assa Abloy Australia Pty Ltd
Priority date: 2008-06-06
Filing date: 2009-06-05
Publication date: 2018-01-18
Anticipated expiration: 2029-06-05
Also published as: AU2009202246B2; AU2009202246A1

Abstract

There is disclosed a mortice lock that comprises a housing, two hub actuators that are each rotatable to 5 retract a locking bolt into the housing from a front of the housing, and a status selector for each hub actuator. The status selector is accessible through an aperture in the side or front of the housing, so that the status of the lock can be set after the housing has been mounted in 10 the mortice of a door. N.\Melbourne\Cases\Patent\76000-76999\P76762.AU. 1\Specis\P76762.AU 1 Specification 2009-6-3.doc 5/06/09 - 1/6

Description

2009202246 05 Jun 2009

ABSTRACT

There is disclosed a mortice lock that comprises a housing, two hub actuators that are each rotatable to retract a locking bolt into the housing from a front of the housing, and a status selector for each hub actuator. The status selector is accessible through an aperture in the side or front of the housing, so that the status of the lock can be set after the housing has been mounted in the mortice of a door.

N.\Melbourna\Casas\Patent\76000-76999\P76762 AU.1\Specis\P76762.AU 1 Specification 2009-6-3.doc 5/06/09

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AUSTRALIA

Patents Act 1990

COMPLETE SPECIFICATION

Standard Patent

Applicant(s):

NOVA HARDWARE PTY LTD

Invention Title:

A MORTICE LOCK

The following statement is a full description of this invention including the best method for performing it known to me/us:

P7C702AU1 Pal_Sel_Filino Application 200*0-5.1.doc (M)

2009202246 18 May 2016

A MORTICE LOCK

Field of the Invention

The present invention relates to a mortice lock 5 capable of selecting the status of the lock.

Background

A mortice lock is installed in a mortice or recess in 10 a side edge of a door. The mortice lock has a bolt that can engage a strike plate in the door frame to hold the door in a closed position.

It is known to provide mortice locks with mechanisms 15 to set the status of the lock. In other words, to selectively enable/disable use of the hub actuators on either side of the door. For example, in a mortice lock that is installed in a door, the external hub actuator may be disabled, so that entry can only be gained using a key, and the internal hub actuator may be enabled so that the lock can always be actuated from the internal side. In this example, the internal side of the lock is configured for an escape situation. The lock is in a vestibule status .

In a further example, a mortice lock can be installed with both internal and external actuators disabled or enabled, so that the door can only be opened with a key or door furniture on both sides. In these applications, the lock is in a combination lock or latch status.

Thus, the status of the lock can be set to suit the particular application.

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In addition, it is also known for mortice locks to be provided with a rotatable bolt head so that the mortice lock can be used in either right hand or left hand applications.

In order to provide mortice locks that can be set up in left hand or right hand vestibule status, or combination status, and also having the ability to select the desired hand of the lock, complicated setting mechanisms have been conceived. These setting mechanisms involve setting the lock status before the mortice lock is installed in the door. It is common for installers to incorrectly set the hand of the door prior to installation. Consequently, the installer must remove the mortice lock and repeat the setting and installation procedure .

Summary of the Invention

The present invention provides a mortice lock comprising:

a housing;

two hub actuators that are each rotatable to retract a locking bolt into the housing from a front of the housing; and a status selector for each hub actuator that is accessible through an aperture in the side or front of the housing, each status selector including a locking hub that is rotatable relative to the respective hub actuator, to set that hub actuator relative to a locking bar and thereby set the status of the lock after the housing has been mounted in the mortice of a door.

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Preferably, the housing has apertures on each side through which a spindle of a respective hub actuator extends, and each status selector is accessible through that aperture.

Preferably, the lock further comprises a locking bar that is selectively slidable between unlocked and locked positions to selectively lock one or both of the hub actuators according to the selected status, whereby when the status selector of one of the hub actuators is set to a locking bar engageable status and the locking bar is in the locked position, the respective status selector abuts the locking bar to impede rotation of the respective hub actuator.

Preferably, each status selector comprises a locking hub that is rotatable relative to the respective hub actuator to set the status of that hub actuator.

Preferably, each locking hub is rotatable between a free position and a locking bar engageable position.

Preferably, each locking hub is rotatable by the 25 spindle of the respective hub actuator. More preferably, the locking hub has a spindle aperture into which the spindle can extend to rotate the locking hub.

Preferably, each hub actuator further comprises an 30 opening hub that is rotatable to retract the locking bolt into the housing and has a spindle aperture into which the spindle can pass to rotate the opening hub, wherein each locking hub is positioned between the

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2009202246 18 May 2016 aperture on the side of the housing and the opening hub, and wherein when the spindle extends into the spindle aperture of the opening hub, the locking hub is rotationally fixed relative to the opening hub.

The lock can further comprise a dead latch pin that is retractable into the housing from a front of the housing; and a dead latch mechanism for preventing movement of the 10 bolt bracket, the dead latch mechanism including a latching bar that is slidable between free and dead latched positions, the latching bar having projections that, when the latching bar is in the dead latched position, engage one of two notches in each locking hub to prevent rotation of the locking hubs.

In some embodiments, the locking bolt is mounted on a bolt bracket, and the locking bar includes a projection that projects 20 from the locking bar towards the bolt bracket, the projection having an inclined face, wherein, when the locking bar is in the locked position, the bolt bracket engages the inclined face and pushes the locking bar towards the unlocked position with retraction of the locking bolt.

In some embodiments, the locking bolt is mounted on a bolt bracket, and the locking bar includes a projection that projects 30 from the locking bar towards the bolt bracket, the projection having a notch on one side, wherein, when the locking bolt and the bolt bracket are retracted, the locking bar can be moved into the

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2009202246 18 May 2016 locked position to engage the notch in the projection, such that the locking bolt is held in a retracted position.

In certain embodiments, the locking bar has a single projection with both the inclined front face, and the notch on one side.

The present invention also provides a mortice lock 10 that is mountable in the mortice of a door, the lock comprising:

a housing;

two hub actuators that are each rotatable to retract a locking bolt into the housing from a front of the housing;

a bolt bracket on which the locking bolt is mounted, the bolt bracket being movable to retract the locking bolt;

a dead latch pin that is retractable into the housing 20 from a front of the housing, the dead latch pin extends through one or more guide slots in the bolt bracket;

a dead latch mechanism for preventing movement of the bolt bracket, which is operated by the dead latch pin such that when the dead latch pin is retracted and the locking bolt is fully forward, the bolt bracket is prevented from moving in the housing; and a status selector for each hub actuator that is accessible through an aperture in the side or front of the housing, each status selector including a locking hub that is rotatable relative to the respective hub actuator, to set that hub actuator relative to a locking bar and thereby set the status of the lock after the housing has been mounted in the mortice of a door.

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Preferably, the bolt bracket has two guide slots for guiding the dead latch pin.

Brief Description of the Drawings

In order that the invention may be more easily understood, embodiments will now be described, by way of example only, with reference to the accompanying drawings, in which:

Figure 1: is an exploded view of a mortice lock according to a first embodiment of the present invention;

Figure 2: is a partial cross section view of the mortice lock of Figure 1, showing a locking hub in a locking bar engageable position;

Figure 3: is a partial cross section view of the mortice lock of Figure 1, showing a locking hub in a free position;

Figure 4: is partial cross section view of a mortice lock according to a second embodiment of the present invention, showing a locking bar in an unlocked position;

Figure 5: is partial cross section view of the mortice lock of Figure 4, showing a locking bar in a locked position; and

Figure 6: is a partial cross section view of a mortice lock according to a third embodiment of the present invention, showing a locking hub in a locking bar engageable position.

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Detailed Description of the Drawings

Figures 1 to 3 show a mortice lock 10 according to a first embodiment of the present invention. In use, the 5 lock 10 is installed in a mortice or similar recess in a side edge of a door (not shown) with a front surface of the lock 10 (for example, a face plate, which is not shown) flush with the side edge of the door. The status of the mortice lock 10 can be selected when the housing is positioned in the mortice, as will be described in further detail.

The lock 10 has a locking bolt 12 that can be retracted into a housing from a front of a housing. In this embodiment, the housing includes a housing body 14a and a housing face plate 14b (referred to hereinafter collectively as housing 14).

The lock 10 has a spring 16 that biases the locking bolt 12 towards a fully forward position, in which the locking bolt 12 projects beyond the side edge of the door to engage a strike plate (also not shown) in the door frame. The locking bolt 12 can be retracted by actuation of two hub actuators that, when the lock 10 is fitted to a door, are each installed on a respective side of the housing 14.

In this embodiment, the hub actuators each include an opening hub 18a, 18b, and a spindle that is connected to the boss of the door furniture to facilitate rotation of the respective spindle. For clarity, the spindles and the boss of the door furniture have been omitted from the Figures. Each opening hub 18a, 18b has a spindle aperture

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20a, 20b in which the respective spindle is to be installed. The spindle and the spindle aperture 20a, 20b have corresponding profiles; in this case, the spindle apertures 20a, 20b are square, and the spindles have a square cross-section. Rotation of either hub actuator causes a lug 22a, 22b on the respective opening hub 20a, 20b to engage and move a bolt bracket 24 that is disposed within the housing 14. The locking bolt 12 is connected to the bolt bracket 24, such that the locking bolt 12 is retracted as the bolt bracket 24 is moved rearwardly in the housing 14.

Each hub actuator can be operated independently of the other to retract the locking bolt 12.

The mortice lock 10 further has a status selector for each hub actuator. Each status selector enables setting of the hand of each of the hub actuators so that the status of the lock 10 can be set to suit the desired 20 application. For example, the lock 10 can be set to any of left hand vestibule status, right hand vestibule status, combination lock or latch status, or unlocked status .

In this embodiment each status selector is accessible through an aperture 26a, 26b in the side of the housing

14. Thus, the status of the lock 10 can be set when the housing 14 is mounted in a mortice, and before the hub actuators are installed.

In the embodiment shown in Figures 1 to 3, the status selector includes a locking bar 28 and two locking hubs 30a, 30b, one to each side of the housing 14. The locking

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2009202246 18 May 2016 bar 28 is slidable between an unlocked (raised) position (shown in Figures 2 and 3) and a locked (lowered) position to selectively lock one or both of the hub actuators according to the selected status.

Movement of the locking bar 28 is effected by lock actuation components. As will be appreciated, lock actuation components include (but are not limited to) any of: lock cylinders, door furniture, turn knobs or emergency buttons. Such lock actuation components extend through (or are accessible through) apertures 32a, 32b in either side of the housing 14.

Each locking hub 30a, 30b is rotatable between a locking bar engageable position (shown in Figure 2) and a free position (shown in Figure 3). As can be seen in Figures 2 and 3, in this embodiment the locking hubs 30a, 30b turn through 45° between the engageable and free positions. For clarity, each of Figures 2 and 3 only show the housing body 14a, the locking bar 28, one of the locking hubs 30b and a slidable latching bar 34. The function of the latching bar 34 will be described in further detail later.

The status selectors operate as follows:

1. When the locking bar 28 is in the unlocked position: each locking hub 30a, 30b can be freely rotated by the hub actuator regardless of whether the respective locking hub 30a, 30b is in the engageable or free position. Thus, the locking bolt 12 can be freely retracted into the housing 14.

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2. When the locking bar 28 is in the locked position and one of the locking hubs 30a, 30b is in the engageable position: a lug 35a, 35b on the respective locking hub 30a, 30b abuts the locking bar 28, preventing rotation of the respective hub actuator. Thus, retraction of the locking bolt 12 by attempted operation of the respective hub actuator is prevented.

3. When the locking bar 28 is in the locked position and one of the locking hubs 30a, 30b is in the free position: the lug 35a, 35b on the respective locking hub 30a, 30b is not able to contact the locking bar 28 so rotation of the respective hub actuator to retract the locking bolt 12 is possible.

As the locking hubs 30a, 30b can be set independently of one another, the status of the lock 10 can set to any of left hand vestibule status, right hand vestibule status, combination lock status or unlocked status.

The locking hubs 30a, 30b have spindle apertures 36a, 36b, which in this embodiment each have an eight-pointed star shape. A spindle with a square cross section can be inserted into the spindle aperture 36a, 36b to rotate the respective locking hub 30a, 30b between the engageable and free positions. Furthermore, a spindle with a square cross section can be inserted into the aperture 36a, 36b in any orientation that mates with the eight-pointed star shaped aperture 36a, 36b.

Thus, each spindle can be partially inserted in the housing 14 to select the status of the respective locking

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2009202246 18 May 2016 hub 30a, 30b, prior to being further inserted into the respective opening hub 18a, 18b. In this position, the spindle is fully inserted (and thus installed) in the housing 14.

Each locking hub 30a, 30b is positioned between the respective side aperture 26a, 26b and opening hub 18a,

18b. In both the engageable and free positions of the locking hub 30a, 30b, the spindle aperture 36a, 36b aligns with the spindle aperture 20a, 20b so that the spindle can extend through both the locking hub 30a, 30b and the opening hub 18a, 18b on the respective side of the housing

14. In other words, when each spindle is fully inserted in the housing 14, that spindle extends through the respective locking hub 30a, 30b and into the respective opening hub 18a, 18b for actuation of the locking bolt 12.

In addition, when the mortice lock 10 is fully installed in a door, the spindle of each hub actuator extends through the locking hub 30a, 30b and into the opening hub 18a, 18b. In this way, the spindle rotationally fixes the locking hub 30a, 30b relative to the opening hub 18a, 18b.

Furthermore, as will be appreciated, when door furniture is installed on the door, the spindles are retained in the lock 10 by the furniture. This prevents the lock status from being reset in routine use of the door, which provides security against unintentional altering of the lock status.

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A procedure for installing the mortice lock 10 is set out below:

1. Preparing a door to receive the lock 10, which may include: defining a mortice in the door; and apertures for hub actuators, lock components and fasteners, as required.

2. Rotating the locking bolt 12 relative to the housing 14 to suit the latching direction.

3. Mounting the housing 14 in the mortice.

4. Setting the hand of each hub actuator, which, for each status selector, involves:

a) Partially inserting the spindle into the housing to change the status of the respective status selector, if required; and

b) Fully inserting the spindle into the housing, such that the spindle extends through the locking hub 30a, 30b and into the opening hub 18a,

18b.

5. Installing remaining door furniture, as required.

In this embodiment, item 4(a) above involves 25 inserting the spindle into the spindle aperture 36a, 36b of the respective locking hub 30a, 30b and rotating the locking hub 30a, 30b between the locking bar engageable position and the free position. In this way, the spindle is used as a tool to operate the status selector.

The lock 10 also includes a dead latch pin 38 that is retractable into the housing from a front of the housing

14. The latch pin 38 co-operates with a dead latch

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2009202246 18 May 2016 mechanism that includes the latch bar 34. The dead latch mechanism is arranged to slide the latch bar 34 between free and dead latched positions. Retraction of the latch pin 38 causes the latch bar 34 to slide towards the dead latched position. When the latch pin 38 is retracted and the locking bolt 12 is fully forward, the latch bar 34 prevents the bolt bracket 24 from moving rearwardly in the housing 14. Thus, the locking bolt 12 can be held in the fully forward position. In practice, this feature of the lock 10 ensures that when the door is closed the locking bolt 12 is dead latched.

Furthermore, when the latch pin 38 is fully forward of the housing 14, the latch bar 34 is in the free position.

The dead latch pin 38 extends through two guide slots 42, 44 in the bolt bracket 24. Movement of the dead latch pin 38 relative to the bolt bracket 24 is constrained by the guide slots 42, 44.

As shown most clearly in Figures 2 and 3, the latch bar 34 has projections 40. Each locking hub 30a, 30b has two notches 41, 43 on the outer periphery. When the latch bar 34 is in the dead latched position, the projections 40 engage either notch 41, 43, depending on the position of the respective locking hub 30a, 30b. This ensures that the position of the locking hubs 30a, 30b cannot be changed when the lock 10 is dead latched.

This provides an important security feature of the lock 10. In particular, when the door is closed (such that the locking bolt 12 is fully forward in the strike

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2009202246 18 May 2016 plate and the dead latch pin 38 is retracted by the strike plate), the projections 40 on the latch bar 34 engage the notches 41, 43, which prevents rotation of the locking hubs 30a, 30b. Thus, the lock 10 cannot be tampered with to change the lock status and enable unlocking of the lock 10 when the door is closed.

In this embodiment, the notches 41, 43 are angularly spaced by 45°. However, the person skilled in the art will appreciate that the notches may be angularly spaced by any workable angle.

The locking bolt 12 is mounted on a hollow pin 46 such that the locking bolt 12 can be rotated on the hollow pin 46 relative to the bolt bracket 24. This enables the lock 10 to be used in either left hand or right hand door applications. The lock 10 includes a face plate 48 that attaches to the front of the housing 14. When the face plate 48 is attached to the housing 14, the face plate 48 rotationally constrains the locking bolt 12 relative to the bolt bracket 24.

A guide pin 47a is attached to the back of the housing 14. A hollow mounting pin 47b is secured within bolt bracket 24. The hollow mounting pin 47b receives the spring 16, which biases the bolt bracket 24, and thus also the locking bolt 12, towards a fully forward position.

The hollow mounting pin 47b also receives the guide pin 47a, which acts to guide the bolt bracket 24 as it moves within the housing 14.

Figures 4 and 5 show a mortice lock 110 according to a second embodiment in partial cross section. For clarity

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2009202246 18 May 2016 of these Figures, many components of the lock 110 have been omitted. However, features of the lock 110 that correspond with features of the lock 10 shown in Figures 1 to 3 have reference numerals incremented by 100.

The lock 110 includes a projection 150 that is connected to the locking bar 150. The projection 150 projects from the locking bar 128 towards the bolt bracket 124. The projection 128 has an inclined face 152, which provides the lock 110 with an anti-lockout functionality, as described below.

In Figure 4, the locking bar 128 is shown in the unlocked (raised) position and the bolt bracket 124 is in its rearmost position, which corresponds with the locking bolt (not shown in Figure 4) in the fully retracted position.

When the locking bar 128 is in the locked (lower) position and the bolt bracket 124 moves rearwardly in the housing 114, the bolt bracket 124 engages the inclined face 152 and pushes the locking bar 128 towards the unlocked position. The bolt bracket 124 can be driven rearwardly by the locking bolt being pushed into the housing 114, for example by closing on a strike plate (not shown). Similarly, the bolt bracket 124 can be drawn rearwardly if a locking hub (not shown) is in the free position and the respective hub actuator (also not shown) is operated to retract the locking bolt.

In addition, the projection 150 has a notch 154 on a side edge, which is between the inclined face 152 and the

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2009202246 18 May 2016 locking bar 128. The notch 154 provides the lock 110 with hold-back functionality, as described below.

In Figure 5, the locking bar 128 is shown in the 5 locked (lower) position and the bolt bracket 124 is in its rearmost position, which corresponds with the locking bolt (not shown in Figure 5) in the fully retracted position.

When the locking bolt is retracted (which corresponds with the bolt bracket 124 in its rearmost position), the locking bar 128 can be moved into the locked position such that the notch 154 engages the bolt bracket 124 to hold the locking bolt in a retracted position.

In some embodiments, the status selector for each hub actuator can be accessible through one or more apertures in the front of the housing. One such embodiment is shown in Figure 6, which shows, in partial cross section, a mortice lock 210 according to a third embodiment. For clarity, many components of the lock 210 have been omitted. However, features of the lock 210 that correspond with features of the lock 10 shown in Figures 1 to 3 have reference numerals incremented by 200.

The locking hub 230a in the lock 210 can be rotated by pushing a tool against either of two abutment tabs 256a, 256b. An opening 258 is provided in the front of the housing 214 through which a lock installer can pass a tool to change the lock status. In particular, pushing a tool, such as an Allen key, on either abutment tab 256a, 256b will rotate the locking hub 230a.

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Thus, the status of the mortice lock 210 can be selected via opening 258 in the front face once the housing 214 is positioned in the mortice. The face plate, which attaches to the front of the housing 214, can also cover the opening 258, preventing access to the opening 258. Once the face plate is installed, the status of the mortice lock cannot be accidentally changed. Furthermore, the lock status can only be changed when the lock is unlocked and the door open.

Aperture 236a in the locking hub 230a has an eightpointed star shape such that a spindle with a square cross section can be inserted into the aperture 236a, 236b in any orientation that mates with the eight-pointed star shape. Thus, the locking hub 230a can be rotationally fixed relative to the respective opening hub by the spindle .

The status of the mortice lock 210 can be selected after the housing is installed into the mortice lock cutout in the door.

It will be understood to persons skilled in the art of the invention that many modifications may be made without departing from the spirit and scope of the invention.

The mortice locks shown in the Figures are the narrow-style, meaning that the depth of the housing is narrow. This type of mortice lock is particularly suitable for use in metal or timber frame doors. However, the invention is also applicable to mortice locks for

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2009202246 18 May 2016 alternative styles of doors and locks with any desired backset.

In some alternative, non-illustrated embodiments of 5 the mortice lock according to the present invention, the status selector is accessible through a dedicated aperture in the side of the housing, which is separate to the aperture through which the spindle passes to access the hub actuator. In such an embodiment, the status selector may include a locking hub that is rotatable between free and locking bar engageable positions by operation of an additional component, such as a geared member that drives the locking hub. In these embodiments, the status of the mortice lock can be selected after the housing is installed into the mortice lock cutout in the door.

In the claims which follow and in the preceding description of the invention, except where the context requires otherwise due to express language or necessary implication, the word comprise or variations such as comprises or comprising is used in an inclusive sense,

i.e. to specify the presence of the stated features but not to preclude the presence or addition of further features in various embodiments of the invention.

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Claims

CLAIMS :

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1. A mortice lock comprising: a housing;
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2. A mortice lock according to claim 1, wherein the housing has apertures on each side through which a spindle of a respective hub actuator extends, and each status selector is accessible through that aperture.
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3. A mortice lock according to either claim 1 or 2, further comprising a locking bar that is selectively slidable between unlocked and locked positions to selectively lock one or both of the hub actuators

25 according to the selected status, whereby when the status selector of one of the hub actuators is set to a locking bar engageable status and the locking bar is in the locked position, the respective status selector abuts the locking bar to impede rotation

30 of the respective hub actuator.
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4. A mortice lock according to any one of claims 1 to 3, wherein each status selector comprises a locking hub that

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2009202246 04 Sep 2017 is rotatable relative to the respective hub actuator to set the status of that hub actuator.
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FigureS

5 14. A mortice lock according to claim 13, wherein the bolt bracket has two guide slots for guiding the dead latch pin.

15. A mortice lock substantially as herein described with 10 reference to and as illustrated in the accompanying drawings .

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5. A mortice lock according to claim 4, wherein each 5 locking hub is rotatable between a free position and a locking bar engageable position.

6. A mortice lock according to either claim 4 or 5, wherein each locking hub is rotatable by the spindle of

10 the respective hub actuator.

7. A mortice lock according to claim 6, wherein each locking hub has a spindle aperture into which the spindle can extend to rotate the locking hub.

8. A mortice lock according to any one of claims 4 to 7, further comprising:

a dead latch pin that is retractable into the housing from a front of the housing; and

20 a dead latch mechanism for preventing movement of the bolt bracket, the dead latch mechanism including a latching bar that is slidable between free and dead latched positions, the latching bar having projections that, when the latching bar is in the dead latched

25 position, engage one of two notches in each locking hub to prevent rotation of the locking hubs.

9. A mortice lock according to any one of claims 1 to 8, wherein each hub actuator further comprises an opening hub

30 that is rotatable to retract the locking bolt into the housing and has a spindle aperture into which the spindle can pass to rotate the opening hub, wherein each locking hub is positioned between the

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2009202246 18 May 2016 aperture on the side of the housing and the opening hub, and wherein when the spindle extends into the spindle aperture of the opening hub, the locking hub is rotationally fixed relative to the opening hub.

10. A mortice lock according to claim 3, further comprising:

a bolt bracket to which the locking bolt is mounted, and

10 a projection that projects from the locking bar towards the bolt bracket, the projection having an inclined face, wherein, when the locking bar is in the locked position, the bolt bracket engages the inclined face and

15 pushes the locking bar towards the unlocked position with retraction of the locking bolt.

11. A mortice lock according to claim 3, further comprising:

20 a bolt bracket to which the locking bolt is mounted, and a projection that projects from the locking bar towards the bolt bracket, the projection having a notch on one side,

25 wherein, when the locking bolt and the bolt bracket are retracted, the locking bar can be moved into the locked position to engage the notch in the projection to hold the locking bolt in a retracted position.

30

12. A mortice lock according to claim 3, further comprising:

a bolt bracket to which the locking bolt is mounted, and

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2009202246 18 May 2016 a projection that projects from the locking bar towards the bolt bracket, the projection having an inclined face and a notch on one side, wherein, when the locking bar is in the locked 5 position, the bolt bracket engages the inclined face and pushes the locking bar towards the unlocked position with retraction of the locking bolt, and wherein, when the locking bolt and the bolt bracket are retracted, the locking bar can be moved into

10 the locked position to engage the notch in the projection to hold the locking bolt in a retracted position.

13. A mortice lock that is mountable in the mortice of a door, the lock comprising:

15 a housing;

two hub actuators that are each rotatable to retract a locking bolt into the housing from a front of the housing;

a bolt bracket on which the locking bolt is mounted, 20 the bolt bracket being movable to retract the locking bolt;

a dead latch pin that is retractable into the housing from a front of the housing, the dead latch pin extends through one or more guide slots in the bolt bracket;

25 a dead latch mechanism for preventing movement of the bolt bracket, which is operated by the dead latch pin such that when the dead latch pin is retracted and the locking bolt is fully forward, the bolt bracket is prevented from moving in the housing; and

30 a status selector for each hub actuator that is accessible through an aperture in the side or front of the housing, each status selector including a locking hub that is rotatable relative to the respective hub actuator, to

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2009202246 18 May 2016 set that hub actuator relative to a locking bar and thereby set the status of the lock after the housing has been mounted in the mortice of a door.

5 two hub actuators that are each rotatable to retract a locking bolt into the housing from a front of the housing; and a status selector for each hub actuator that is accessible through an aperture in the side or front of the

10 housing, each status selector including a locking hub that is rotatable relative to the respective hub actuator, to set that hub actuator relative to a locking bar and thereby set the status of the lock after the housing has been mounted in the mortice of a door.
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