GB1604385A

GB1604385A - Chimney and method of building a chimney

Info

Publication number: GB1604385A
Application number: GB2853877A
Authority: GB
Original assignee: Taylor S J
Current assignee: Taylor S J
Priority date: 1978-04-28
Filing date: 1978-04-28
Publication date: 1981-12-09

Description

(54) CHIMNEY AND METHOD OF BUILDING A CHIMNEY (71) I, STANLEY JOHN TAYLOR, a British Subject, of 41 Ladram Road, Thorpe Bay, Essex, 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 state ment :- The present invention relates to chimneys, particularly, but not exclusively, for domestic premises.

In the past, it has been conventional to build chimneys from conventional bricks and this has required a large number of bricks which have to be laid separately and therefore requires considerable labour.

Furthermore, because of the small size of bricks it is necessary after the chimney has been built to a small height to allow the mortar to set since the wet mortar can only support a limited height of brickwork.

The amount of labour involved, and the time required for building a chimney of conventional materials has caused them to be eliminated from many modern houses which may be heated, for example, by boilers which may have, for example, balanced flue systems not requiring a chimney.

There are, however, many circumstances in which a chimney is preferred in a house and the present invention therefore provides means whereby chimneys may be more simply incorporated than in the past.

The present invention provides a chimney comprising a plurality of identical chimney blocks each of lightweight aerated clay and comprising a first part incorporating a flue portion and a second part built into and forming part of an adjacent wall of the building, successive identical chimney blocks being laid on top of one another upside down with respect to each other so that the flue portions are aligned, the aligned tlue portions including chimney liners.

It will be realised that by using such a construction, a chimney may be readily constructed by placing the chimney blocks on top of one another and the second part readily allows the chimney to be integrated into the adjacent wall with the minimum of difficulty.

Although the two parts may be of separate materials joined together we prefer that the chimney blocks are of an integral construction.

The use of lightweight aerated clay reduces the necessity for heavy foundations as are required for brick chimneys.

It is preferred that the height of each chimney block or at least the second part of the chimney block to be equal to or a multiple of the height of the bricks or blocks of which the adjacent wall is constructed. In conventional modern construction, the inner wall of houses is of a lightweight block construction and therefore the height of the chimney block will be arranged to be the same as the height of the wall blocks.

Although this is a preferred arrangement there are other combinations of heights of the two portions of the chimney block as will be readily apparent.

In a further preferred embodiment, the length and width of the second part will correspond to the length and width of the blocks on which the wall is being built.

The first part which incorporates the flue portion may include on its outer surface a vertically orientated channel along which pipes may be laid. This is particularly preferred since many modern fireplace units incorporate water heaters and the pipes may then be readily laid in the channels to pass up to the roof or first floor of the house.

The chimney blocks may incorporate integral therewith a chimney liner or a separate chimney liner may be provided in use.

The present invention also provides a method of building a chimney comprising stacking a plurality of identical chimney blocks on top of one another, so that successive identical chimney blocks are laid on top of one another upside down with respect to each other, each block including a flue portion and a second part built into and forming part of an adjacent wall of the biulding, the flue portions of adjacent chimney blocks being aligned and including chimney liners.

A chimney and method of constructing such a chimney will now be described by way of example only and with reference to the accompanying drawings in which: Figure 1 shows a first chimney block for use in a chimney according to the invention, Figure 2 shows a second chimney block for use in a chimney according to the invention, Figure 3 shows a side view of a chimney of the invention, Figures 4 and 5 show perspective views of the chimney blocks of Figures 1 and 2 incorporated into a wall, Figure 6 shows a further type of chimney block, and, Figure 7 shows a sectional view of one type of chimney block incorporating a flue lining.

The chimney block of Figure 1 is an integral block manufactured of lightweight aerated clay which is a lightweight and heat insulating material. The chimney block comprises two parts, the first part 10 including a flue 11 which passes from the bottom surface 18 to the upper surface 19 of the block, and a second part 12 adapted to be built into an adjacent wall of a house. In the embodiment of Figure 1, the second part 12 comprises a projecting member 12 which protrudes from the rear wall 13 of the first part 10.

The dimensions of the block will be apparent from the drawing and it will be understood that the height of both the first and second parts 10 and 12 (210 mm) is the same and corresponds to the height of a concrete block which is to be utilised in building the inner part of a double skinned outer house wall.

The first part 10 is generally rectangular and the flue 11 is also generally rectangular and centrally arranged in the first part 10, the thickness of wall surrounding the flue 11 being 90 to 100 mm. Two side walls 14, 15 of the first part 10 incorporate channels 16, 17 respectively which are dimensioned to be able to receive water pipes, the channels 16, 17 passing continuously upwardly from the bottom surface 18 to the upper surface 19 of the chimney block.

In use, the chimney block may be utilised to construct a chimney of the invention as follows and as shown in Figure 4. After the fireplace has been constructed, a first chimney block is laid on a bed of mortar above the fireplace and is positioned so that the projecting member 12 projects into the inner wall 21 of a double skinned outer house wall as illustrated in Figure 4. The projecting member 12 is mortared into the inner wall 21 in the conventional manner. It will be understood that the projecting member 12 is of the same height 210 mm) as the blocks 22 forming the wall 21 and so it is preferred that the chimney block 23 in Figure 4 is laid at the same time as the layer 24 of blocks.The next chimney block 25 may be placed on the top of the chimney block 23 after mortar has been laid on the upper surface of the chimney block 23 so that the flue 11 of the two chimney blocks are aligned and the projecting member 12 of the upper chimney block 25 may be incorporated in the next layer 26 of concrete blocks in the wall 21. Successive chimney blocks are laid upside down relative to one another so that the projecting members 12 of successive blocks do not lie above one another but are displaced from one another to assist in keying the chimney blocks into the wall.

As shown in Figure 7, a flue liner may be mortared into the flue 11 if desired or such flue liner may be permanently inserted during manufacture.

The chimney block illustrated in Figure 1 is preferred in some embodiments but the amount by which the chimney stack protrudes into the living space may be reduced by the use of the chimney block according to Figure 2. In this embodiment, rather than the rear wall 13 carrying a projecting member 12, the side wall 15 incorporates a projecting member 30 adjacent the rear wall 13 so that in this case, the overall depth of the chimney block from front to back is reduced.

Thus the rear wall 13 of the block forms part of both the first part 10 incorporating the flue 11 and the second part 12 adapted to be built into an adjacent wall.

Figure 5 shows a perspective view of the chimney block of Figure 2 incorporated into a wall in exactly the same manner as with Figure 4.

As with the previous arrangement successive chimney blocks are Inverted with respect to one another so as to key the chimney blocks into the inner wall 19.

Figure 3 illustrates a side view of a chimney built with chimney blocks according to Figures 1 or 2.

It will be understood that in each case, the chimney blocks may readily be carried by a single man so that the mimmum amount of labour is required to build a chimney of the construction described.

Once the chimney has been completed, it may be finished off by simply plastering the surface or by other cladding. As is well understood, water pipes may pass up from a boiler in the fireplace below the chimney to a tank in the loft. Once the chimney reaches the level of the roof of the house then conventional bricks may be used as necessary or perhaps a more waterproof version of the chimney blocks described but without the projecting members 12 or 30.

Figure 6 illustrates an alternative arrangement of chimney block constructed of similar materials to those previously described and of generally similar dimensions. In this case, the chimney block corresponds generally to that of Figure 2 except that the channels 16, 17 are not provided.

As an alternative to these channels and on the triangular opposite corner to that mounting the projecting member 30, an identical projecting member 30' is provided.

When such a chimney block is used as described, that is, alternate chimney blocks are arranged upside down with respect to one another, the two projections 30, 30' form, in fact, channels between respective projections 30, 30'. In the arrangement actually shown in Figure 6, if the front wall with respect to the drawing is the wall towards the interior of the buildings, then the channel formed along the left hand side of the chimney breast has no wall towards the front of the chimney block but this can be provided by a broken part of a normal building block such as Is used for the inner face of a double skimmed outer house wall.

The advantage of this arrangement is that the channels for the pipes do not intrude into the thickness of the chimney block and so the full thickness (100 mm) is provided around the chimney flue.

This chimney block may be utilised up to the level of the first floor whereafter a chinnel for pipes will not be required and then a similar block or other type of block with no channels for water pipes may be utilised.

The invention is not restricted to the details of the foregoing examples.

Reference may be made to my co-pending Divisional patent application No.

8 101 718, serial no. 1 604 386 for a chimney block.

WHAT I CLAIM IS: 1. A chimney comprising a plurality of identical chimney blocks each of lightweight aerated clay and comprising a first part incorporating a flue portion and a second part built into and forming part of an adjacent wall of the building, successive identical chimney blocks being laid on top of one another upside down with respect to each other so that the flue portions are aligned, the aligned flue portions including chimney liners.

2. A chimney as claimed in claim 1 in which each block is of integral construction.

3. A chimney as claimed in claims 1 or 2 in which at least the second part of each block is of a height equal to or a multiple of the height of standard bricks or blocks of which the adjacent wall is constructed.

4. A chimney as claimed in claims 1, 2 or 3 in which the length and width of the second part of each block corresponds to the length and width of the bricks or blocks of which the adjacent wall is constructed.

5. A chimney as claimed in any ot claims 1 to 4 in which the flue portion of each block includes on its surface a vertically orientated channel along which pipes may be laid.

6. A chimney as claimed in any of claims 1 to 5 in which each block includes an integral chimney liner.

7. A chimney as claimed in any of claims 1 to 5 in which the chimney liners are not integral with the blocks.

8. A chimney as claimed in any of claims 1 to 7 substantially as hereinbefore described with reference to the drawings.

9. A method of building a chimney as claimed in claim 1 comprising stacking a plurality of identical chimney blocks on top of one another, so that successive identical chimney blocks are laid on top of one another upside down with respect to each other, each block including a flue portion and a second part built in to and forming part of an adpacent wall of the building, the flue portions of adjacent chimney blocks being aligned and including chimney liners.

10. A method as claimed in claim 8 substantially as hereinbefore described.

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Claims

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of similar materials to those previously described and of generally similar dimensions. In this case, the chimney block corresponds generally to that of Figure 2 except that the channels 16, 17 are not provided.

As an alternative to these channels and on the triangular opposite corner to that mounting the projecting member 30, an identical projecting member 30' is provided.

When such a chimney block is used as described, that is, alternate chimney blocks are arranged upside down with respect to one another, the two projections 30, 30' form, in fact, channels between respective projections 30, 30'. In the arrangement actually shown in Figure 6, if the front wall with respect to the drawing is the wall towards the interior of the buildings, then the channel formed along the left hand side of the chimney breast has no wall towards the front of the chimney block but this can be provided by a broken part of a normal building block such as Is used for the inner face of a double skimmed outer house wall.

The advantage of this arrangement is that the channels for the pipes do not intrude into the thickness of the chimney block and so the full thickness (100 mm) is provided around the chimney flue.

This chimney block may be utilised up to the level of the first floor whereafter a chinnel for pipes will not be required and then a similar block or other type of block with no channels for water pipes may be utilised.

The invention is not restricted to the details of the foregoing examples.

Reference may be made to my co-pending Divisional patent application No.

8 101 718, serial no. 1 604 386 for a chimney block.

WHAT I CLAIM IS: 1. A chimney comprising a plurality of identical chimney blocks each of lightweight aerated clay and comprising a first part incorporating a flue portion and a second part built into and forming part of an adjacent wall of the building, successive identical chimney blocks being laid on top of one another upside down with respect to each other so that the flue portions are aligned, the aligned flue portions including chimney liners.
2. A chimney as claimed in claim 1 in which each block is of integral construction.
3. A chimney as claimed in claims 1 or 2 in which at least the second part of each block is of a height equal to or a multiple of the height of standard bricks or blocks of which the adjacent wall is constructed.
4. A chimney as claimed in claims 1, 2 or 3 in which the length and width of the second part of each block corresponds to the length and width of the bricks or blocks of which the adjacent wall is constructed.
5. A chimney as claimed in any ot claims 1 to 4 in which the flue portion of each block includes on its surface a vertically orientated channel along which pipes may be laid.
6. A chimney as claimed in any of claims 1 to 5 in which each block includes an integral chimney liner.
7. A chimney as claimed in any of claims 1 to 5 in which the chimney liners are not integral with the blocks.
8. A chimney as claimed in any of claims 1 to 7 substantially as hereinbefore described with reference to the drawings.
9. A method of building a chimney as claimed in claim 1 comprising stacking a plurality of identical chimney blocks on top of one another, so that successive identical chimney blocks are laid on top of one another upside down with respect to each other, each block including a flue portion and a second part built in to and forming part of an adpacent wall of the building, the flue portions of adjacent chimney blocks being aligned and including chimney liners.
10. A method as claimed in claim 8 substantially as hereinbefore described.