GB1569753A

GB1569753A - Keeper plate for gate doors

Info

Publication number: GB1569753A
Application number: GB4069/78A
Authority: GB
Original assignee: MALKMUS DOERNEMANN CAROLA
Current assignee: MALKMUS DOERNEMANN CAROLA
Priority date: 1977-02-01
Filing date: 1978-02-01
Publication date: 1980-06-18
Also published as: DE2703967A1; DE2703967C2; IT1091996B; FR2378926B1; CH622852A5; IT7819726A0; BE863095A; FR2378926A1

Abstract

The lock plate is designed as a box-shaped housing (6) open towards the wing and can be clamped adjustably to the post by means of jaws (8, 9) surrounding the post. In a closed position, the open side of the housing is covered by the wing, and provided within the housing is the tensioning device (14) for the jaws (8, 9), with at least one tension screw held in a bore of the housing wall. This makes it possible to avoid welding the lock plate to the post (1) and nevertheless to ensure the reliable absorption of even very high loads. <IMAGE>

Description

(54) A KEEPER PLATE FOR GATE, DOORS ETC.

(71) I, CAROLA MALKMUS DORNEMANN of Am Lappenspring 3, 3326 Salzgitter-Bad, Federal Republic of Germany, a German Citizen, do hereby declare the invention for which I pray that a patent may be granted to me, and the method by which it is to be performed, to be particularly described in and by the following statement: Tlle invention relates to a keeper plate for gates, doors etc. the pivoted elements of which are hereinafter referred to as "leaves", which can be fixed to posts made from a hollow profile.

Modern gates and doors, more particularly external gates, are manufactured to an increasing degree from hollow profile members, more particularly made of metal. The keeper plates to be attached to the post must be permanently fixed to the post, more particularly welded thereto, after exact alignment of the leaves of the gate or door. This requires extraordinarily careful work since the keeper plate must be aligned and oriented with a large degree of accuracy with respect to the leaf. Apart from the large cost of attaching the keeper plates in this type of attachment, there is the difficulty that subsequent correction of the position of the closure plate on the post is no longer possible. When there are changes in the orientation of the leaves, the closure plate must be re-finished or separated completely from the post and rearranged and this involves considerable expense.

the connection between the keeper plate and the post must be strong since the keeper plate is subject to considerable stress chiefly in the direction crosswise to the plane of the leaf when closed. It must be possible to reliably pass this loading on to the post. This is only possible via a firm connection.

The invention seeks to create a keeper plate for gates, doors etc. which can be fixed to a post made from a hollow profile and in which the stated disadvantages are removed or reduced and which can safely accommodate very high loading as occurs say when the leaves are violently slammed closed, without the necessity of welding to the post and which can transmit this loading to the post, which can be adjusted easily and with a large degree of accuracy and can be reset at any later point in time and which is secured reliably against unauthorized access.

According to the invention, there is provided a keeper plate arrangement for gates, doors etc.

comprising a box-shaped keeper plate, jaws on the keeper plate for engagement with a gate, door etc., post and tensioning means for one or both jaws adapted to be inaccessible when the gate, door etc. is closed.

The keeper plate can be fixed to the post in a reliable manner with the aid of jaws independently of the profile of the post and with simultaneous positive locking and frictional locking so that the connection reliably withstands even high loadings and all of the forces arising are easily and safely transmitted to the profile of the post. Since the tensioning device for the jaws lies inside the box-shaped keeper plate and the keeper plate is covered by the leaf itself when the leaf is closed, unauthorized access to the tensioning device is ruled out when the leaf is closed.

By full abutment of all of the parts of the keeper plate on each other and on the surfaces of the post engaged around by the jaws the device may be reliably prevented from being broken by force by use of tools. The keeper plate with its jaw forms a smooth configuration having an attractive shape on the outside and conforming to the profile of the post, whereby the casing and the jaws are preferably constructed as moulded parts or injection-moulded parts.

The invention will now be described in greater detail, by way of example, with reference to the drawings, in which: Figure 1 shows a portion of a post having a triangular hollow profile and a keeper plate in accordance with the invention adjustably arranged thereon, Figure 2 shows a horizontal section through the keeper plate according to Figure 1 with the parts loosened, and Figure 3 shows a front elevation of the keeper plate with the parts also shown loosened.

In the example shown, it is assumed that the post 1 has a hollow profile and is of triangular cross-section. The internal space 2 of the hollow post can be filled up with concrete or another substance. One side 4 of the post forms an abutment side for a closure plate 5 while in the example shown the post 1 has a T-shaped bar 3 on its edge opposite the abutment face 4.

The keeper plate 5 in accordance with the invention is connected to the post 1 in positive and frictional manner.

The keeper plate comprises a casing 6 which is elongated in the direction of the post, the casing resting with its base 7 full on the abutment face 4 of the post 1 and is open on its side remote from the abutment face 4. The keeper plate can comprise a moulded part, or a cast part, preferably an injection-moulded part.

Alignment of the casing 6 and securing its position on the abutment face 4 of the post 1 is achieved with the aid of two jaws 8 and 9 which are attached to the two side walls 6a and 6b of the casing and which engage around the post edges 4a, 4b limiting the abutment face 4 of the post 1 and have jaw portions 12. The inner surface of the jaws is dimensioned and formed so that the jaws 8 and 9 abut with their inner surfaces full on the abutment face 4 and on the post surfaces bordering the abutment face 4, whereby the shape of the jaws is dependent on the outline shape of the post.

With posts made from a square or rectangular hollow profile, the two abutment surfaces of each jaw include a right angle. The jaws can be made in the same manner as the casing 6 in each case fully abut the abutment face 4 of the post and the bordering outer surfaces of the post with their abutment faces.

Moreover, the jaws 8 and 9 also connect to the external surfaces of the two longitudinal walls 6a and 6b of the casing-shaped keeper plate 6 or are attached to a spacer element 13 which is attached correspondingly fully to one of these side walls as can be seen from Figure 1.

The spacer element 13 or as necessary several of these spacer elements are matched in outline to the outline of the connection surface of the related jaw and provide the opportunity of using different dimensions with identical construction of the jaws with posts of the same hollow profile so that the spacer element takes up the differences in width of the abutment surface. Spacer elements can also be provided on both sides'of the casing.

It is preferred however to use a spacer element on one side which has a bore extending the bearing bore of the relevant casing wall of the same diameter for the cylindrical central portion of the clamp bolt.

The tensioning device 14 is secured against axial displacement by means of a spring ring 15.

Threaded bores in alignment with each other are provided in the two jaws 8 and 9, these running perpendicular to the plane of the closed gate leaf. The threads in the two jaws have opposed pitch.

It may be seen, particularly from Figure 2, that the tensioning device 14 has a central cylindrical portion of a noticably larger diameter than the threaded portions 22 and 25 cooperating with the threaded bores 10 and 11 at the ends of the clamp bolt. In the example shown, the cylindrical portion has three part regions 24, 26 and 27. The part region 24 lies in the bearing bore 23, which runs right through the side wall 6a of the casing and the spacer element 13 connected thereto in one piece. From this side, the tensioning element 14 can be inserted into the casing until the outer side of the cylindrical region 27 comes into abutment against the internal surface of the casing wall 6b.In this position, an annular groove between the portions 24 and 26 is accessible into which groove the spring ring 15 can be inserted in order to secure the tensioning element in the position described.

A polygon 28 is provided between the two cylindrical regions 26, 27, said polygon being freely accessible for a corresponding key when the door leaf is open so that the tensioning element 14 can be rotated by the key in order to draw the two jaws 8 and 9, at the same time and in the same way against the casing 6 or the spacer element 13 and against the side surfaces of the post and to fix the closure plate on the post.

The broken line 1 3a in Figure 2 is intended to indicate that the complementary or spacer element 13 can also be provided as a separate part.

In order to prevent the jaws from slipping away from the sides of the posts, particularly with posts having a square or rectangular hollow profile, the base 7 of the casing 6 has oblong holes 20a and 20b through which fixing screws, for example screws having an internal hexagon, can be screwed in the post in appropriate threaded bores. These screws do not need to accommodate any large loads since these loads are transmitted direct to the post by means of the jaws. The screws should merely prevent the keeper plate from being able to lift away from the post in the direction of the plane of the closed door leaf.

It can be seen that the keeper plate can be adjusted on the post easily and exactly because of the described construction and can be fixed in the selected position. The adjust ment can also be corrected later, even when an additional fixing is necessary by means of screws to the post.

One of the two jaws could be fixed to the casing or connected in one piece to the casing so that the tensioning element only acts on the other jaw. The tensioning element can also be constructed in two parts so that the two jaws can be thightened independently of each other.

WHAT I CLAIM IS: 1. A keeper plate arrangement for gates, doors etc. comprising a box-shaped keeper plate, jaws on the keeper plate for engagement with a gate, door etc., post and tensioning means for one or both jaws adapted to be inaccessible when the gate, door etc. is closed.

2. A keeper plate arrangement according to Claim 1, wherein the box-shaped plate is constructed as an elongated casing which is open towards the leaf of the gate door etc. and a clamping bolt is mounted in the side walls of the casing so as to be incapable of displacement axially but so as to be rotatable, the clamping bolt engaging into at least one jaw with at least one threaded portion.

3. A keeper plate arrangement according to Claim 2, wherein the clamping bolt has two threaded portions of opposed hand.

4. A keeper plate arrangement according to any one of Claims 1 to 3 wherein each jaw abuts fully against the abutment surface and the adjacent bordering surfaces of lie post when in use.

5. A keeper plate arrangement according to any one of Claims 1 to 4, wherein the or each movable jaw abuts the external surface of the side wall of the casing or of a spacer element fully connected to the side wall.

6. A keeper plate arrangement according to Claim 5, wherein the or each spacer element is constructed in one piece with the casing.

7. A keeper plate arrangement according to any one of Claims 3 to 6, wherein one of the two jaws is connected permanently or is in one piece with the casing.

8. A keeper plate arrangement according to any one of Claims 2 to 7, wherein the clamp bolt has a cylindrical central portion of a substantially larger diameter than the or each threaded portion which is mounted in a corresponding bearing bore of one side wall of the casing.

9. A keeper plate arrangement according to Claim 8 when appendent directly or indirectly to Claim 5, wherein the longer diameter portion is mounted in the spacer element.

10. A keeper plate arrangement according to claim 8, wherein the central portion abuts the inner surface of the opposite side wall with one endface is secured axially at its other end by a spring ring.

11. A keeper plate arrangement according to Claim 8 or 9, wherein the central portion has a polygonal part in the region of the recess in the casing for actuating the clamp bolt.

12. A keeper plate arrangement according to any one of Claims 1 to 10 wherein longitudinal openings are provided in the base of the casing for fixing screws.

13. A keeper plate for gates, doors etc., substantially as described herein with reference to the drawings.

**WARNING** end of DESC field may overlap start of CLMS **.

Claims

**WARNING** start of CLMS field may overlap end of DESC **. ment can also be corrected later, even when an additional fixing is necessary by means of screws to the post. One of the two jaws could be fixed to the casing or connected in one piece to the casing so that the tensioning element only acts on the other jaw. The tensioning element can also be constructed in two parts so that the two jaws can be thightened independently of each other. WHAT I CLAIM IS:

1. A keeper plate arrangement for gates, doors etc. comprising a box-shaped keeper plate, jaws on the keeper plate for engagement with a gate, door etc., post and tensioning means for one or both jaws adapted to be inaccessible when the gate, door etc. is closed.