AU635110B2

AU635110B2 - Method of and cover strip lining for forming cavity wall arches

Info

Publication number: AU635110B2
Application number: AU70844/91A
Authority: AU
Inventors: Samuel Francis Hardy
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-02-13
Filing date: 1991-02-07
Publication date: 1993-03-11
Anticipated expiration: 2011-02-07
Also published as: AU7084491A

Description

63511 0 PATENTS ACT 1952-1973 COMPLETE SPECIFICATION

(ORIGINAL)

FOR OFFICE USE Class: Int. CI: Application Number: Lodged: P/00/011 Form

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Complete Specification Lodged: Accepted: Published: Priority: Related Art: TO BE COMPLETED BY APPLICANT S. Name of Applicant: SAMUEL FRANCIS HARDY, Address of Applicant: 554 Waverley Road, Chadstone 3148, Victoria, Australia.

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Actual Inventor: SAMUEL FRANCIS HARDY Address for Service: Cowie Carter Hendy Patent Trademark Attorneys 71 Queens Road MELBOURNE, 3004, Australia>,, Complete Specification for the invention entitled: "METHOD OF AND COVER STRIP LINING FOR FORMING CAVITY WALL ARCHES" The following statement is a full description of this Invention, Including the best method of performing it known to me:- THIS INVENTION relates to a method of forming an archway in a cavity wall structure and a cover strip liner member for forming the inside surface of an archway.

Prior known methods of forming archways in cavity walls comprise fitting a strip of lining material between the two cavity wall sheets so as to accept either an arch bead or an external angle on each side of the arch.

These prior structures suffer from a number of disadvantages in that there are three support members used which is time consuming with an added difficulty in obtaining a square flat finish. Also excess settable material is required in the filing of such structures. Yet another disadvantage of using such known methods is that the arch bead may be caused to tilt to one side resulting in an over-build of settable. Also the known methods can allow one side of the metal beading to lift away from the lining material and with a curved arch structure it is difficult to prevent flat spots occurring, 0. ~It is an object of the present invention to provide a method of forming an ese.

archway which overcomes these prior known disadvantages by utilizing a cover strip lining member over and between the two cavity wall sheets said member being capable of being filled with a settable material, such as plaster, so as to create a solid formed structure.

According to one form of the invention there is provided a cover strip lining member for forming the inside of an arch of a cavity wall, comprising a strip of al flexible material the side edges of which are provided with angle members, the legs °of the angle members being adapted to engage against the end faces and outer edge parts of the wall sheets of the cavity wall arch the outer legs of the angle members and the strip between the angle members being provided with a series of apertures.

According to another form of the invention there is a cover strip lining member for forming the inside of an arch of a cavity wall comprising a strip of flexible see material the side edges of which are provided with channel members adapted to embrace the edge parts of the wall sheets of the cavity wall arch, the outer leg of each channel member and the strip between the channel members being provided with a series of apertures.

The strip of apertured flexible material of the cover strip lining member may be longitudinally creased to provide an angled configuration so as to allow adjustment of the width of the cover strip member.

The inner legs of the channel members may also be provided with a series of apertures and longitudinally extending rib members may be provided on the outer legs of the angle and channel members adjacent the other leg parts of the angle members and the base parts of the channel members.

According to another form of the invention there is provided a method of forming an archway in a cavity wall having two spaced-apart wall sheets comprising the steps of engaging a cover strip, as above referred, over and between the cavity wall sheets in the archway opening, applying a settable material to the cover strip member between the wall sheets and to the outer legs of the cover strip member so as to extrude through the apertures and form a smooth faced solid formed archway structure.

s .The settable material may conveniently comprise a plaster material capable of forming a secure joint between the outer legs of the cover strip lining member and the wall sheets.

In order to provide greater adhesion of the cover strip lining member to the wall sheets the inner legs of the channel members may be provided with a series of 0 006 apertures.

In order that the invention and its manner of performance may be more fully described, reference will now be made to embodiments of the invention as illustrated in the accompanying drawings, in which:- Figure 1 is a perspective exploded view of a cover strip lining member and a cross-section of the structural archway; 0 Figure 2 is a plan view of Figure 1; Figure 3 is a plan view of the cover strip lining member located in the archway; 0 0*0 Figures 4, 5 and 6 are side views of cover strip lining members of the invention; Figures 7, 8, 9 and 10 are front views of archways embodying the invention.

Referring to Figures 1 to 3 there is illustrated a form of the cover strip lining member of the invention as applied to an archway opening in a cavity wall wherein a wall stud 5 has wall sheets 6 attached thereto.

The cover strip lining member comprises a strip of flexible material 7, which may be of cardboard or the like, with a series of perforations or apertures 8 therethrough. Channel members, generally indicated at 9, are connected to the outer side edges of strip 7 and comprise an internal leg 10, a base part 11 and an outer leg 12. Outer leg 12 is provided with perforations or apertures 13. Internal leg 10 may also be provided with apertures.

Channel members 9 are of a width to conform to the width of the wall sheets 6 so as to be an engageable push fit thereon. Strip 7 is creased to provide an angled configuration so as to be adjustable to varying widths between wall sheets 6.

As shown in Figure 3, when the cover strip lining member is engaged on the protruding parts 14 of the wall sheets 6, protruding preferably 10 mm. from studs and joists, settable material 15 is applied to strip 7 so as to lock through apertures 8 and can be built up to the level of base part 11 to provide a solid uniform arch. Settable i material applied to outer legs 12 extrude through apertures 13 therein and firmly S.secure outer legs 12 to the wall sheets 6. Additional coats of settable material may o. be applied over outer legs 12 to provide a finished appearance. Ribs 16 between base part 11 and outer leg 12 serve to provide an abutment for the finishing layer of settable material. Settable material applied to the inside surface of the wall sheets 6 may also assist in the adherence of internal legs 10 to the wall sheets, or if legs are apertured, the settable material applied to strip 7 may extrude through legs 10 and 0oo assist in adherence of channel members 9 to the wall sheets.

SFigures 4, 5 and 6 illustrate several configurations of the cover strip lining members of the invention and Figures 7 to 10 illustrate shapes of archways to which the cover strip lining members of the invention can be applied.

The cover strip lining members can be applied to doorways and to large openings as between a master bedroom and a dressing room.

Claims

1. A cover strip lining member according to one form of the invention there is provided a cover strip lining member for forming the inside of an arch of a cavity wall, comprising a strip of flexible material the side edges of which are provided with angle members, the legs of the angle members being adapted to engage against the end faces and outer edge parts of the wall sheets of the cavity wall arch the outer legs of the angle members and the strip between the angle members being provided with a series of apertures.

2. A cover strip lining member according to another form of the invention there is a cover strip lining member for forming the inside of an arch of a cavity wall comprising a strip of flexible material the side edges of which are provided with channel members adapted to embrace the edge parts of the wall sheets of the cavity wall arch, the outer leg of each channel member and the strip between the channel w*@ 0 members being provided with a series of apertures. 0:

3. A cover strip lining member according to Claim 1 or Claim 2 wherein the strip of apertured flexible material is longitudinally creased to provide an angled :0 configuration to allow adjustment of the width of the cover strip lining member.

4. A cover strip lining member according to Claim 2 or Claim 3 wherein the inner legs of the channel members are provided with a series of apertures.

A cover strip lining member according to any one of Claims 1 to 4 wherein the outer legs of the lining member are provided with longitudinally extending rib members adjacent the other leg parts of the angle members and the base parts of the channel members.

6. A method of forming an archway in a cavity wall having two spaced-apart wall sheets comprising the steps of engaging a cover strip lining member according to any one of Claims 1 to 5 over and between the cavity wall sheets in the archway opening, 0 000 applying a settable material to the cover strip member between the wal sheets and to the outer legs of the cover strip member so as to extrude through the apertures and form a smooth faced solid formed archway structure.

7. A method according to Claim 6 wherein the settable material is a plaster material capable of forming a secure joint between the outer legs of the cover strip lining member and the wall sheets. I 1*

8. A method according to Claim 6 or Claim 7 wherein the settable material applied to the cover strip member between the wall sheets is also extruded through the apertures in the inner legs of the channel members to provide added adhesion of the cover strip member to the wall sheets.

9. A method according to Claim 6 or Claim 7 wherein a coating of settable material is applied to the inner surface of the wall sheets to assist in the adherence of the inner legs of the channel members to the wall sheets.

A method according to any one of Claims 6 to 9 wherein additional coats of settable material are applied over the outer legs and the strip member to provide a finished appearance.

11. An archway in a cavity wall constructed in accordance with the method of any one of Claims 6 to

12. A cover strip lining member substantially as herein described with reference to the accompanying drawings.

S13. A method of forming an archway in a cavity wall substantially as herein Sdescribed with reference to the accompanying drawings.

14. An archway in a cavity wall substantially as herein described with reference to the accompanying drawings. DATED this 5th day of February, 1991. SAMUEL FRANCIS HARDY. .CO*W CARTER HEDY 71 QUEENS ROAD, MELBOURNE, 3004, AUSTRAIA MELBOURN~AE, 3004, AUSTRALIA