CA2083926C - Latch - Google Patents
Latch Download PDFInfo
- Publication number
- CA2083926C CA2083926C CA 2083926 CA2083926A CA2083926C CA 2083926 C CA2083926 C CA 2083926C CA 2083926 CA2083926 CA 2083926 CA 2083926 A CA2083926 A CA 2083926A CA 2083926 C CA2083926 C CA 2083926C
- Authority
- CA
- Canada
- Prior art keywords
- bolt
- keeper
- latch
- movement
- engaging end
- 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.)
- Expired - Lifetime
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
- E05C1/00—Fastening devices with bolts moving rectilinearly
- E05C1/02—Fastening devices with bolts moving rectilinearly without latching action
- E05C1/04—Fastening devices with bolts moving rectilinearly without latching action with operating handle or equivalent member rigid with the bolt
-
- 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
- E05B17/2007—Securing, deadlocking or "dogging" the bolt in the fastening position
- E05B17/2069—Securing, deadlocking or "dogging" the bolt in the fastening position by means of an additional dogging movement of a sliding bolt
-
- 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
- E05B17/2007—Securing, deadlocking or "dogging" the bolt in the fastening position
- E05B17/203—Securing, deadlocking or "dogging" the bolt in the fastening position not following the movement of the bolt
- E05B17/2034—Securing, deadlocking or "dogging" the bolt in the fastening position not following the movement of the bolt moving pivotally or rotatively
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gates (AREA)
Abstract
A latch for securing adjacent structures, for example, doors or gates, includes a bolt assembly to be secured to one of the structures and a keeper to be secured to the other adjacent structure. The bolt assembly includes a bolt having a keeper engaging end, a handle, and a support which allows attachment of the bolt assembly to the one structure. The support contains a retaining bracket to allow sliding of the bolt between latched and unlatched positions. The keeper has an abutment surface to receive the keeper engaging end of the bolt in the latched position and a stop which engages the keeper engaging end of the bolt to prevent the bolt from sliding to the unlatched position. Either of the bolt assembly or the keeper may be installed on either of the adjacent structures.
Description
LATCH
This invention relates to a latch for securing adjacent relatively movable structures, such as doors, gates or the like.
In paddock or barn door latching systems, it is desirable to have an easily opened and closed mechanism which cannot be readily unlatched by animals or children. Conventionally thumb latches have been used in which a latch bar is pivoted to a support plate and is moved about the pivot to release it from a notched keeper. Another commonly used sliding bolt device requires the sliding portion of the lock to be rotated in order to disengage it from the keeper or catch. It has been found, however, that these latches are readily opened by animals leading to their release from an enclosure.
According to the present invention there is provided a latch to inhibit relative movement between adjacent structures, said latch comprising a bolt assembly to be secured to one of said structures; and a keeper to be secured to the other of said structures;
said bolt assembly including a bolt having a body with at least one keeper engaging end, and a handle secured to the body to facilitate movement of the bolt between latched and unlatched positions, said bolt assembly further including a support for said bolt: to permit attachment of the bolt assembly to a generally planar surface of said one structure, said support including a retaining bracket configured to support said bolt for longitudinal sliding movement between said latched and unlatched positions within the plane of said one structure, whilst preventing movement of said bolt normal to said one structure;
said :keeper having an abutment surface spaced from said other structure to receive said keeper engaging end in said latched position and a stop selectively engageable with said keeper engaging end of said bolt in said latched position to inhibit sliding movement of said bolt toward said unlatched position;
said bracket for said bolt permitting limited latitudinal movement of said bolt to disengage said keeper engaging end from said stop and to permit sliding movement of said bolt to said unlatched position.
This invention relates to a latch for securing adjacent relatively movable structures, such as doors, gates or the like.
In paddock or barn door latching systems, it is desirable to have an easily opened and closed mechanism which cannot be readily unlatched by animals or children. Conventionally thumb latches have been used in which a latch bar is pivoted to a support plate and is moved about the pivot to release it from a notched keeper. Another commonly used sliding bolt device requires the sliding portion of the lock to be rotated in order to disengage it from the keeper or catch. It has been found, however, that these latches are readily opened by animals leading to their release from an enclosure.
According to the present invention there is provided a latch to inhibit relative movement between adjacent structures, said latch comprising a bolt assembly to be secured to one of said structures; and a keeper to be secured to the other of said structures;
said bolt assembly including a bolt having a body with at least one keeper engaging end, and a handle secured to the body to facilitate movement of the bolt between latched and unlatched positions, said bolt assembly further including a support for said bolt: to permit attachment of the bolt assembly to a generally planar surface of said one structure, said support including a retaining bracket configured to support said bolt for longitudinal sliding movement between said latched and unlatched positions within the plane of said one structure, whilst preventing movement of said bolt normal to said one structure;
said :keeper having an abutment surface spaced from said other structure to receive said keeper engaging end in said latched position and a stop selectively engageable with said keeper engaging end of said bolt in said latched position to inhibit sliding movement of said bolt toward said unlatched position;
said bracket for said bolt permitting limited latitudinal movement of said bolt to disengage said keeper engaging end from said stop and to permit sliding movement of said bolt to said unlatched position.
The latch of the present invention requires a compound movement in order to disengage t:he latch, namely, lifting and sliding. The bolt is capable of both longitudinal and latitudinal movement in the plane of the door or gate surface, allowing an operator to lift the bolt, disengaging the latching mechanism, and then to slide the bolt out of the keeper so that the door can be opened. However, when the bolt is engaged in the latched position, pushing movements on the door or on the bolt will not cause the bolt to disengage, thus providing greater security against accidental opening.
The preferred embodiment provides a latch of few parts which is readily installed on gate or door structures and which can be economically manufactured.
An embodiment of the present invention is described in greater detail with reference to the accompanying drawing, in which:
Figure 1 is a perspective view of the latch showing alternative positions of the relative parts, broken lines showing the latched position.
Referring to the drawing, a latch 10 is installed on a pair of relatively moveable structures A, B, in this case a door A pivoted within a frame B. The latch 10 includes a bolt assembly 12 which is mounted on the door A and a keeper 14 which is mounted on the frame B.
It will be appreciated that the bolt assembly 12 could be installed on the frame B with the keeper 14 on the door A if preferred.
The bolt assembly 12 also includes a support plate 24 for attaching the assembly 12 to the planar surface of either the door A or frame B. The support plate 24 includes a pair of retaining brackets 26 located at opposite ends of the support plate 24. Each bracket 26 includes a strap 27 with a central portion 29 overlying the end of the plate 24 and being spaced from it to define a pair of aligned slots.
A bolt 16 is slidably received in the brackets 26 and consists of a body 18 having a keeper engaging end 20 at one or both ends. The body 18 is narrower than the slots formed by brackets 26 and so is supported for both longitudinal and limited lateral movement relative to the support plate 24.
In the embodiment of Figure 1, a keeper engaging end 20 is provided at both ends of the body 18 to allow the latch 10 to be used at either edge of the door A. The keeper engaging end 20 includes a notch 32 on the lower edge 33 of the body 18.
The central portion of the body 18 is formed as a handle 22 that is spaced from the support plate 24 to allow the user to move the bolt 16 between latched and unlatched positions, shown in Figure 1 by solid and broken lines, respectively.
The keeper 14 is formed from a strap and has a pair of flanges 35 on either side of a raised central portion 37 spaced away from the frame B to receive the keeper engaging end 20 of the body 18 of the bolt 16 in the latched position.
The inwardly-directed surface 28 of the central portion 37 defines an abutment surface against which the keeper engaging end 20 bears to inhibit relative movement between the door A and frame B. A boss 30 is provided at the lower edge of the central portion 37 and is configured to fit into the notch 32 on the body 18 in the latched position.
In operation, in the latched position, the bolt 16 is received within the keeper 14 and the boss 30 engages the notch 32 to prevent the sliding movement of the bolt 16 to disengage the keeper 14. Relative movement between the door A
and frame B is prevented. by the keeper engaging end 20 engaging the abutment surface 28 of the keeper 14.
To prevent accidental disengagement of the notch 32 from the boss 30, a locking member 34 is pivotally mounted on the frame B above the keeper 14.
The longer limb 36 of locking member 34 is secured to the frame B by a screw 38 which locates the member :34 so that the shorter limb 40 is received in the keeper 14 above the bolt 16. When engaged, the lock member 34 inhibits latitudinal movement of the bolt 16 in the keeper,.
To move the bolt to the unlatched position, the locking member 34 is pivoted away from the keeper 14 and the user lifts the bolt 16 within the keeper 14 to disengage the notch 32 from the boss 30.
The bolt 16 may then be slid to the unlatched position. As noted above, the brackets 26 allow the necessary latitudinal movement to disengage the boss and notch.
The preferred embodiment provides a latch of few parts which is readily installed on gate or door structures and which can be economically manufactured.
An embodiment of the present invention is described in greater detail with reference to the accompanying drawing, in which:
Figure 1 is a perspective view of the latch showing alternative positions of the relative parts, broken lines showing the latched position.
Referring to the drawing, a latch 10 is installed on a pair of relatively moveable structures A, B, in this case a door A pivoted within a frame B. The latch 10 includes a bolt assembly 12 which is mounted on the door A and a keeper 14 which is mounted on the frame B.
It will be appreciated that the bolt assembly 12 could be installed on the frame B with the keeper 14 on the door A if preferred.
The bolt assembly 12 also includes a support plate 24 for attaching the assembly 12 to the planar surface of either the door A or frame B. The support plate 24 includes a pair of retaining brackets 26 located at opposite ends of the support plate 24. Each bracket 26 includes a strap 27 with a central portion 29 overlying the end of the plate 24 and being spaced from it to define a pair of aligned slots.
A bolt 16 is slidably received in the brackets 26 and consists of a body 18 having a keeper engaging end 20 at one or both ends. The body 18 is narrower than the slots formed by brackets 26 and so is supported for both longitudinal and limited lateral movement relative to the support plate 24.
In the embodiment of Figure 1, a keeper engaging end 20 is provided at both ends of the body 18 to allow the latch 10 to be used at either edge of the door A. The keeper engaging end 20 includes a notch 32 on the lower edge 33 of the body 18.
The central portion of the body 18 is formed as a handle 22 that is spaced from the support plate 24 to allow the user to move the bolt 16 between latched and unlatched positions, shown in Figure 1 by solid and broken lines, respectively.
The keeper 14 is formed from a strap and has a pair of flanges 35 on either side of a raised central portion 37 spaced away from the frame B to receive the keeper engaging end 20 of the body 18 of the bolt 16 in the latched position.
The inwardly-directed surface 28 of the central portion 37 defines an abutment surface against which the keeper engaging end 20 bears to inhibit relative movement between the door A and frame B. A boss 30 is provided at the lower edge of the central portion 37 and is configured to fit into the notch 32 on the body 18 in the latched position.
In operation, in the latched position, the bolt 16 is received within the keeper 14 and the boss 30 engages the notch 32 to prevent the sliding movement of the bolt 16 to disengage the keeper 14. Relative movement between the door A
and frame B is prevented. by the keeper engaging end 20 engaging the abutment surface 28 of the keeper 14.
To prevent accidental disengagement of the notch 32 from the boss 30, a locking member 34 is pivotally mounted on the frame B above the keeper 14.
The longer limb 36 of locking member 34 is secured to the frame B by a screw 38 which locates the member :34 so that the shorter limb 40 is received in the keeper 14 above the bolt 16. When engaged, the lock member 34 inhibits latitudinal movement of the bolt 16 in the keeper,.
To move the bolt to the unlatched position, the locking member 34 is pivoted away from the keeper 14 and the user lifts the bolt 16 within the keeper 14 to disengage the notch 32 from the boss 30.
The bolt 16 may then be slid to the unlatched position. As noted above, the brackets 26 allow the necessary latitudinal movement to disengage the boss and notch.
In a preferred embodiment of the latch 10, the handle 22 is integrally formed with the body 18 and is positioned in a spaced relationship from the support plate 24. The flanks of the handle thus co-operate with the brackets 26 to limit longitudinal movement of the bolt 16.
S Any combination of adjacent structures may be latched together by alternative installations of the bolt assembly 12 and keeper 14 relative to one another.
The body 18 of the .bolt may have a keeper engaging end 20 at either or both ends of the body 18 for the desired installation.
It can be seen that changes to the described construction are available, comprising different embodiments within the scope of the claims. It is intended that all matter contained in the accompanying specifications and drawings be interpreted as illustrative of the invention and not as limitations thereof.
S Any combination of adjacent structures may be latched together by alternative installations of the bolt assembly 12 and keeper 14 relative to one another.
The body 18 of the .bolt may have a keeper engaging end 20 at either or both ends of the body 18 for the desired installation.
It can be seen that changes to the described construction are available, comprising different embodiments within the scope of the claims. It is intended that all matter contained in the accompanying specifications and drawings be interpreted as illustrative of the invention and not as limitations thereof.
Claims (10)
1. A latch to inhibit relative movement between adjacent structures, said latch comprising:
a bolt assembly to be secured to one of said structures; and a keeper to be secured to the other of said structures;
said bolt assembly including a bolt having a body with at least one keeper engaging end, and a handle secured to the body to facilitate movement of the bolt between latched and unlatched positions, said bolt assembly further including a support for said bolt to permit attachment of the bolt assembly to a generally planar surface of said one structure, said support including a retaining bracket configured to support said bolt for longitudinal sliding movement between said latched and unlatched positions within the plane of said one structure, while preventing movement of said bolt normal to said one structure;
said keeper having an abutment surface spaced from said other structure to receive said keeper engaging end in said latched position and a stop selectively engageable with said keeper engaging end of said bolt in said latched position to inhibit sliding movement of said bolt toward said unlatched position;
said bracket for said bolt permitting limited latitudinal movement of said bolt to disengage said keeper engaging end from said stop and to permit sliding movement of said bolt to said unlatched position.
a bolt assembly to be secured to one of said structures; and a keeper to be secured to the other of said structures;
said bolt assembly including a bolt having a body with at least one keeper engaging end, and a handle secured to the body to facilitate movement of the bolt between latched and unlatched positions, said bolt assembly further including a support for said bolt to permit attachment of the bolt assembly to a generally planar surface of said one structure, said support including a retaining bracket configured to support said bolt for longitudinal sliding movement between said latched and unlatched positions within the plane of said one structure, while preventing movement of said bolt normal to said one structure;
said keeper having an abutment surface spaced from said other structure to receive said keeper engaging end in said latched position and a stop selectively engageable with said keeper engaging end of said bolt in said latched position to inhibit sliding movement of said bolt toward said unlatched position;
said bracket for said bolt permitting limited latitudinal movement of said bolt to disengage said keeper engaging end from said stop and to permit sliding movement of said bolt to said unlatched position.
2. The latch claimed in claim 1 wherein said handle and said body are integrally formed and said handle is spaced from said support.
3. The latch claimed in claim 1 or claim 2 wherein both ends of the body of the bolt are formed as keeper engaging ends.
4. The latch claimed in claim 1 wherein the keeper engaging end of the body of the bolt includes a notch on the lower edge of the bolt, positioned to receive the stop of the keeper.
5. The latch claimed in claim 4 wherein the stop of the keeper comprises a boss sized to fit within the notch on the keeper engaging end of the body of the bolt, said boss being positioned on the keeper so as to securely engage the notch when the bolt is in the latched position.
6. The latch claimed in claim 1 wherein the support comprises a pair of longitudinally spaced brackets, and the handle is located between the brackets.
7. The latch claimed in claim 6 wherein said brackets are loops longitudinally spaced from the support to hold the body of the bolt for sliding movement.
8. The latch claimed in claim 7 wherein the brackets are configured to limit the lateral movement of the body of the bolt relative to said one structure.
9. The latch claimed in claim 1 wherein the latitudinal movement of the body of the bolt is further restricted by a locking member pivotally mounted on the planar surface of the said other structure above the keeper.
10. The latch claimed in claim 9 wherein said locking member includes a first limb secured to said other structure by a fastener and a second limb configured to fit within the keeper, said fastener fixing the said locking member so that said second limb can be received by the keeper to inhibit latitudinal movement of the bolt in the keeper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2083926 CA2083926C (en) | 1992-11-24 | 1992-11-24 | Latch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2083926 CA2083926C (en) | 1992-11-24 | 1992-11-24 | Latch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2083926A1 CA2083926A1 (en) | 1994-05-25 |
| CA2083926C true CA2083926C (en) | 2000-01-11 |
Family
ID=4150747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2083926 Expired - Lifetime CA2083926C (en) | 1992-11-24 | 1992-11-24 | Latch |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2083926C (en) |
-
1992
- 1992-11-24 CA CA 2083926 patent/CA2083926C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CA2083926A1 (en) | 1994-05-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKEX | Expiry |