GB2032985A

GB2032985A - Cill for an External Door or Window

Info

Publication number: GB2032985A
Application number: GB7933824A
Authority: GB
Original assignee: HOCKING W
Current assignee: HOCKING W
Priority date: 1978-10-12
Filing date: 1979-09-28
Publication date: 1980-05-14
Also published as: GB2032985B

Abstract

The specification describes a cill for an external door or window, a modified form of door or window for use with such a cill and the combination of a door or window and a cill. A cill embodying the invention is formed with a longitudinal upstanding portion 29 acting to limit inward movement of the door or window with which it is used, the cill is further provided with a trough 30 adjacent the upstanding portion which trough in use lies beneath the door or window. Weepholes 31 lead from the trough to an outer portion of the underside of the cill enabling drainage of rainwater collected in the trough. The underside of the door is chamfered by an angle C of, preferably, 21 DIVIDED 2 DEG , and a ploughed groove or throat 33 may be formed in the underside of the door as a safeguard against water migrating across the underside of the door by capillary action. Rebates 22, 23 may be provided in the bottom surface of the cill and they are, preferably, equi- spaced from the longitudinal side edges of the cill. <IMAGE>

Description

SPECIFICATION Cills for External Doors or Windows This invention relates to cills for external doors or windows.

Conventional door and window cills are not always effective in conditions of driving rain, as are frequently experienced in parts of the British Isles and elsewhere, and they have a number of other disadvantages. For example cills of different profiles need to be used with inwardly and outwardly opening doors or windows. Moreover, with inwardly opening doors or windows, a weatherboard fixed to the outside of the door or window near its bottom, is often needed to shield the bottom of the door, and the cill, from the weather and a steel weatherbar needs normally to be positioned in the cill to prevent ingress of rainwater. Considerable time needs to be spent in correctly locating and fixing the weatherboard and the weatherbar and the door frame has to be rebated to house the weatherboard when the door is shut.Moreover, the amount of material, usually timber, used in conventional door cills is considerable.

Objects of the invention include the provision of improved door and/or window cills.

According to one aspect of the invention, there is provided a door or window cill having a longitudinal trough formed therein for receiving rainwater, and a longitudinal upstanding portion adjacent the trough for forming a stop for a door or a window.

A door cill embodying the invention has the advantages that it may be used for an inwardly or an outwardly opening door, and that the need for a weatherbar and weatherboard is dispensed with.

Before the cill is installed in a door or window frame, means need to be provided enabling drainage of rainwater from the trough, such drainage means preferably comprise at least one weephole leading from the bottom of the trough.

The direction of the or each weephole in any cill depends on whether the cill is to be used with an inwardly or an outwardly opening door, and consequently once the or each weephole has been formed in a cill that cill is no longer suitable for use with either of an inwardly and an outwardly opening door. Nevertheless, the embodiments of the invention obviate the need to produce door cills of different profiles for inwardly and outwardly opening doors It will be appreciated that a cill manufacturer can form the or each weephole before distribution of the cills to, for example, builders' merchants, so that both inwardly and outwardly opening door cills can be supplied from stock; or that the manufacturer can distribute the cills without weepholes, which may subsequently be formed to suit a particular order for inwardly or outwardly opening doors.

According to a further aspect of the invention, there is provided a combination of a door or a window and a cill therefor having a longitudinal trough formed therein for receiving rainwater, and a longitudinal upstanding portion adjacent the trough and forming a stop for the door or the window, the trough being provided with means enabling drainage of rainwater from the trough.

Preferably, the drainage means comprise at least one weephole.

Rebates for a slate or tile riser and for a damp proofing course may be provided in the cill in conventional manner. Advantageously, such rebates are equi spaced from the longitudinal edges of the cill, so as to achieve complete reversibility of the positions of the cill, but such spacing is not essential where a profiled cill is to be taken from stock and adapted to meet a particular order by formation of suitably directed weepholes and rebates.

The bottom of the door is advantageously chamfered upwardly towards the direction of door opening and is formed with a groove in its base hindering the passage of water beneath the door by capillary action.

To enable the invention to be more readily understood, reference will now be made to the accompanying drawings, which illustrate diagrammatically and by way of example two previously proposed door cills and a door cill embodying the invention. In the drawings Figures 1 and 2 are end views of known door cills for use with inwardly and outwardly opening doors respectively; and Figures 3 and 4 illustrate door cills which have a common profile and are adapted for use with inwardly and outwardly opening doors respectively.

Each Figure shows at A a longitudinal section through a complete door assembly and at B a detail, to an enlarged scale, of the longitudinal section A.

Throughout the drawings, like reference numerals denote like parts, Referring to the drawings, and firstly to the parts A thereof, there is shown in each Figure a door frame head 11, a door cill 12, and a door, generally indicated at 13. The doors 13 each have a top rail 14, a bottom rail 15 and side rails 16 which support a glass panel 1 7. A door jamb 18 is also shown. The direction of opening of the doors 13 is shown in each Figure by an arrow.

Referring now particularly to Figure 1, the door cill 12 includes a steel weatherbar 1 9 located in a groove 20 in the upper surface of the cill 12 beneath the door 13. The door 13 is rebated to accommodate the weatherbar 19, as shown at 21. The cill 12 is formed with rebates 22 and 23 in its lower surface for a slate or tile riser, and for a damp proofing course to stop passage of water, respectively. A weatherboard 24 is secured by means of screws 12 (only one of which is shown) to the external face of the bottom rail of the door 13, and shields the bottom of the door and the top of the cill 13 from the weather. The door frame jamb 18 is rebated as shown at 21 to accommodate the weatherboard when the door 13 is shut.

It will be appreciated that the provision of the weatherboard and its fixing to the bottom rail of the door, the rebating of the door frame, the provision of the groove for the weatherbar and the positioning of the weatherbar in the groove is time consuming and adds considerably to the cost of the doors' assembly. Moreover, the cill cannot be used for an outwardly opening door.

Referring now to Figure 2, the door cill 12 is formed with a longitudinal upstanding portion 27 which limits inward movement of the door 1 3 and forms a barrier against entry of rainwater. A ploughed groove or throat 28 is formed in the bottom of the door to hinder passage of water between the door 13 and the cill 12 by capillary action. Rebates 22 and 23 are formed in the door cill 12 for the purpose indicated in connection with Figure 1. It will be appreciated that the door cill 12 is not suitable for inwardly opening doors, since water could penetrate adjacent the portion 27, and capillary action would cause water to reach the throat 28 and eventually cross the threshold. There would be no means of preventing this and once water was in, there would be no way of getting it out.

Referring now to Figure 3, there is shown a door cill 12 formed with a longitudinal upstanding portion 29 which limits inward movement of the door 13, and a trough 30 adjacent the stop 29 beneath the door 13. Weepholes 31 (only one of which is shown) lead from the trough 30 to an outer portion of the underside of the cill for drainage of rainwater. The underside 32 of the door is chamfered, as shown, by an angle C of, e.g. 2+0, and a ploughed groove or throat 33 is formed in the underside of the door as a safeguard against water moving across the underside of the door.

Rebates 22 and 23 for the previously mentioned purposes are formed in the bottom of the cill 12 and, they are equi spaced from the longitudinal edges 12 of the cill 12.

Referring now to Figure 4, there is shown a door cill 12 of profile identical but which faces in the opposite direction to that shown in Figure 3.

In this case, however, the weepholes 31 extend in a different direction from the trough 30 to that shown in Figure 1.

The door cills 12 illustrated in Figures 3 and 4 have a common profile and so may be used with inwardly opening and outwardly opening doors (depending on the direction of the weepholes 31) as mentioned previously.

Although a glass-panelled door is shown, it will be appreciated that the present door cill 12 is not restricted for use with any particular type of door.

It has been found that the door cill particularly described above has been successful in keeping out water, even in conditions of driving rain, despite its not having a weatherboard or a steel weatherbar.

The present cill can be made much smaller than commonly used conventional door cills, for example it can be made from a timber of about 63 mmx 100 mm in section whereas conventional hardwood external door cills are typically made from timber of about 150 mmx75 mm in section.

The present cill may also be used for windows in exposed areas, and for windows in multi-storey blocks, particularly inwardly-opening windows.

Claims

1. A cill for use with a door or window, the cill having a longitudinal trough formed therein for receiving rainwater, and a longitudinal upstanding portion adjacent the trough for forming a stop for a door or a window.

2. A cill according to Claim 1, including means enabling drainage of rainwater received in said trough.

3. A cill according to Claim 2, wherein the said drainage means comprises one or more holes extending from the bottom of said trough.

4. A cill according to Claim 3, wherein the or each said hole extends from said trough to the bottom of the cill.

5. A cill according to any one of claims 1 to 4, the bottom surface of which includes rebates for a slate or tile riser and for a damp proofing course.

6. A cill according to Claim 5, wherein said rebates are equi-spaced from the longitudinal edges of the cill.

7. A cill according to any one of claims 1 to 6, and substantially as herein described with reference to Figures 3 and 4 of the accompanying drawings.

8. A door or window in combination with a cill according to any one of claims 2 to 7.

9. A door or window according to Claim 8, wherein said drainage means comprises one or more holes extending from the bottom of the trough in the cill to the bottom of the cill and in a direction in which the door or window opens.

10. A door or window according to Claim 8 or Claim 9, wherein the bottom of the door is chamfered upwardly in the direction of door opening.

11. A door or window according to Claim 10, when the angle of said chamfer is substantially 230.

12. A door or window according to any of claims 8 to 11 and including a groove formed in the bottom surface thereof.

13. A door and cill combination according to any one of claims 8 to 12, and substantially as herein described with reference to Figures 3 and 4 of the accompanying drawings.

14. A door for use with a cill as claimed in any one of Claims 1 to 7, substantially as herein described with reference to Figures 3 and 4 of the accompanying drawings.