GB2074224A - A tool for use in rendering a reveal - Google Patents

Abstract

A tool (18) for use in rendering a reveal (12) comprises first and second edges (22, 24) at right angles to each other, a guide device (28) which extends at right angles to the first edge, and a fastener arrangement (36, 42, 44) for securing the guide device at any desired distance from the second edge, the tool being such that it is manually movable vertically with the guide device moving over an edge part of a wall aperture adjacent the reveal, and with the second edge moving vertically over the reveal for scraping off any excess rendering material that may have been applied to the reveal. <IMAGE>

Description

SPECIFICATION A tool for use in rendering a reveal This invention relates to a tool for use in rendering a reveal.

The internal side surfaces or reveals of apertures such for example as window and door apertures are often difficult to render to a desired even thickness. It is an aim of the present invention to provide 3 tool for facilitating this rendering.

Accordingly, this invention provides a tool for use in rendering a reveal, which tool comprises first and second edges at right angles to each other, a guide device which extends at right angles to the first edge, and a fastener arrangement for securing the guide device at any desired distance from the second edge, the tool being such that it is manually movable vertically with the guide device moving over an edge part of a wall aperture adjacent the reveal, and with the second edge moving vertically over the reveal for scraping off any excess rendering material that may have been applied to the reveal.

Usually the rendering of the reveal will be effected with a plastering material. It is however to be appreciated that the tool of the present invention can be used with rendering materials other than plaster. Thus, for example, the tool can be used with cement material.

In one embodiment of the invention, the first and second edges form part of a plate.

Advantageously, the plate is substantially triangular in plan.

In another embodiment of the invention, the first and second edges form part of separate arms of the tool, the tool having an open centre portion.

The guide device will usually comprise at least one arm. Preferably, the guide device comprises a pair of arms, one arm being longer than the other, the arms extending in opposite directions, and the guide device being reversible with respect to the first edge of the tool so that either one of the arms can extend at right angles from the first edge.

Advantageously, the or each arran has a rotatable sleeve for enabling the guide device to roll over the edge part of the wall aperture.

The fastener arrangement may comprise a slot adjacent the first edge, a support portion for supporting the guide device, a threaded bolt extending from the support portion through the slot, and a nut for the bolt.

Preferably, the slot will be a closed slot and the nut will be a wing nut.

The support portion may have an upstanding part which fits in the slot to prevent the support portion from turning with respect to the slot when the upstanding part is in the slot, but which is slidable in the slot to allow the support portion and therefore the guide device to be moved along the slot to any desired position.

Preferably, the tool is made of stainless steel or aluminium. It is to be appreciated however that other metals may be employed although these metals should be non-rusting. The tool may also be made from plastics materials and wood. When the fastener arrangement includes a nut and a washer, then preferably the nut and the washer are cadmium plated. Other plating materials such for example as chromium may be employed if desired.

In use of the tool, the end of the second edge remote from the first edge will usually be supported on a bearer member secured to the edge of the reveal remote from the edge part of the wall aperture. This bearer member may be a wooden strip which has been nailed in position or it may be the corner of a plastered in metal strip.

Embodiments of the invention will now be described solely by way of example and with reference to the accompanying drawings in which: Figure 1 shows a first tool in accordance with the invention; Figure 2 shows an enlarged part of the tool of Figure 1; Figure 3 shows a second tool in accordance with the invention; and Figure 4 shows a meshed metal strip corner member.

Referring to Figures 1 and 2, there is shown a window 2 set in a frame 4. The frame 4 has surfaces 6 and 8, the surface 8 facing inside a room. A brick side wall 10 is shown and the wall between the surface 8 of the frame 4 and the side wall 10 forms a reveal 12. If it is desired to plaster this reveal 12, the plaster has to be of a desired even thickness all the way over the reveal. In order to achieve this, a wood strip 14 is nailed in position on the side wall 10 such that the edge 1 6 of the strip 14 projects beyond the surface of the reveal 1 2 by a desired amount which is equal to the thickness of the plaster to be applied to the reveal 12. The tool 1 8 is then positioned as shown.

The tool 1 8 comprises a plate 20 which is substantially triangular in plan and which has a first edge 22 and a second edge 24. A closed slot 26 is provided adjacent the edge 22. The edge 24 is slightly rounded or chamfered as shown. The tool 1 8 also comprises a guide device 28 which is shown most clearly in Figure 2. The guide device comprises a pair of arms 30, 32. The arm 30 is longer than the arm 32, and the arm 30 is typically one inch long whereas the arm 32 is typically half an inch long. The arms 30, 32 are made of metal and they are each provided with a recess 34 for receiving an Allen key. The opposite ends of the arms 30, 32 are screw threaded and the recesses 34 enable the arms 30, 32 to be screwed into correspondingly threaded apertures in a support portion 36.The arms 30, 32 are each provided with a plastics sleeve 38, 40 respectively. The sleeves 38, 40 can rotate about their arms 30, 32 respectively so that the sleeves 38, 40 can easily roll over a surface as will be described in more detail hereinbelow. The sleeves 38, 40 are held in position by the head of a screw, not shown, which screw is located in the recess 34. The head of the screw is advantageously counter-sunk in the recess 34.

The support portion 36 forms part of a fastener arrangement of the tool 18. The fastener arrangement also includes a screw threaded bolt 42 which upstands from an upstanding part 44 formed on the support portion 36. The part 44 fits in the slots 26 and it will be apparent that when the part 44 is in the slot 26, the part 44 will prevent the support portion 36 from rotating with respect to the slot 26. However, the part 44 will slide in the slot 26 so that the support portion 26 and therefore the arms 30, 32 can be positioned anywhere along the length of the slot 26. When a desired position has been reached, a wing nut 46 can be tightened down onto a washer 48 to retain the guide device 28 in its chosen position.

As shown in Figure 1, the sleeve 38 can be rolled over the surface 6 and the edge 22 will be in engagement with the surface 8. The end of the edge 24 remote from the edge 22 will be running over the edge 16 of the strip 14. The tool 18 will thus be located at a desired position away from the illustrated brickwork of the reveal 12. Thus, when the reveal 12 is plastered, any excess plaster applied to the reveal 12 can be scraped off of the reveal 12 by the edge 24 of the tool 18. The remaining plaster will be substantially smooth and of an even coat of the desired depth.

During use of the device, the arm 30 may be too long for the depth of some surfaces 6 and there may be a risk of the arm engaging the window 2. In this case, the nut 46 can be slackened and the part 44 dropped below the slot 26. The support portion 36 can then be reversed through 1800 and the part 44 repositioned in the slot 26. The wing nut 46 can then be tightened as before. The shorter arm 32 will then be able to engage the surface 6 and there will be no risk that the window 2 will be touched by the arm 32.

Referring now to Figure 3, similar parts as in Figures 1 and 2 have been given the same reference number. It will be seen that in Figure 3, the tool 1 8 is still substantially triangular in plan but the edges 22, 24 form part of separate arms 50, 52 respectively. A third arm 54 forms a triangular tool 1 8 which has an open centre as illustrated. Also as shown in Figure 3, the edge 24 is chamfered to a greater degree than the corresponding edge 24 shown in Figure 1. Further in Figure 3, only one arm 30 has been employed and the arm 32 has been omitted.

Referring now to Figure 4, it may be desired to replace the wood strip 14 with the metal strip 56.

The strip 56 comprises two mesh sides 58, 60.

The side 58 will be plastered to the side wall 10 and the side 60 will be plastered to the reveal 12.

A centre strip 62 will be positioned on the edge formed by the wall 10 and the reveal 12. The plastering of the sides 58, 60 will be such that in the finished state, only the strip 62 will be visible and it will be positioned an appropriate distance beyond the brick surface of the reveal 12, this distance being equal to the depth of the plaster that is to be applied to the reveal 12.

It is to be appreciated that the embodiments of the invention described above have been given by way of example only and that modifications may be effected. Thus, for example, the tool 18 may be of a different shape than the illustrated general triangular shape. Also, if desired, the sleeve 38, 40 could be dispensed with.

Claims (13)

1. A tool for use in rendering a reveal, which tool comprises first and second edges at right angles to each other, a guide device which extends at right angles to the first edge, and a fastener arrangement for securing the guide device at any desired distance from the second edge, the tool being such that it is manually movable vertically with the guide device moving over an edge part of a wall aperture adjacent the reveal, and with the second edge moving vertically over the reveal for scraping off any excess rendering material that may have been applied to the reveal.

2. A tool according to claim 1 in which the first and second edges from part of a plate.

3. A tool according to claim 2 in which the plate is substantially triangular in plan.

4. A tool according to claim 1 in which the first and second edges form part of separate arms of the tool, the tool having an open centre portion.

5. A tool according to any one of the preceding claims in which the guide device comprises at least one arm.

6. A tool according to claim 5 in which the guide device comprises a pair of arms, one arm being longer than the other, the arms extending in opposite directions, and the guide device being reversible with respect to the first edge of the tool so that either one of the arms can be extended at right angles from the first edge.

7. A tool according to claim 6 in which the or each arm has a rotatable sleeve for enabling the guide device to roll over the edge part of the wall aperture.

8. A tool according to any one of the preceding claims in which the fastener arrangement comprises a slot adjacent the first edge, a support portion for supporting the guide device, a threaded bolt extending from the support portion through the slot, and a nutfor the bolt.

9. A tool according to claim 8 in which the slot is a closed slot.

10. A tool according to claim 8 or claim 9 in which the nut is a wing nut.

11. A tool according to any one of claims 7 to 10 in which the support portion has an upstanding part which fits in the slot to prevent the support portion from turning with respect to the slot when the upstanding part is in the slot, but which is slidable in the slot to allow the support portion and therefore the guide device to be moved along the slot to any desired position.

12. A tool according to any one of the preceding claims which is made from stainless steel.

13. A tool for use in rendering a reveal, substantially as herein described with reference to the accompanying drawings.