GB1604386A

GB1604386A - Chimney block

Info

Publication number: GB1604386A
Application number: GB171881A
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 BLOCK (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 statement: The present invention relates to chimney blocks for forming a chimney, 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 sizes 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 block for forming a chimney in a building comprising a first part of generally rectangular horizontal cross-section incorporating a generally vertical flue portion and a second part comprising a projecting member of generally rectangular horizontal crosssection adpated to be built into and forming part of an adjacent wall of the building, the second part extending from a first side of the first art adjacent a second side adjacent said first side, so that one side of the second part and said second side of the first part form a substantially continuous surface and a second side of the second part adjacent said first side having a width no greater than the width of the wall into which it is to be built.

The present invention also provides a chimney comprising a plurality of chimney blocks as set out in the previous paragraph laid above one another so that their flue portions align and said second parts of some of said blocks extending one direction and said second parts of the remaining blocks extend in the opposite direction.

It is preferred that the height af the 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.

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.

A chimney block and method of constructing a chimney will now be described by way of example only and with reference to the accompanying drawings in which: Figure 1 shows a chimney block according to the invention, Figure 2 shows a side view of a chimney constructed of blocks of the invention, Figure 3 shows a perspective view of the chimney block of Figures 1 incorporated into a wall, and Figure 4 shows a sectional view of the chimney block incorporating a flu 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 1 of generally rectangular horizontal cross-section including a flue 11 which passes from the bottom surface 18 to the upper surface 19 of the block, and a second part 30 of generally rectangular horizontal cross-section adapted to be built into an adjacent wall of a house.

The second part 30 comprises a protecting member 12 which protrudes from a side wall 15 of the first part I 0 adjacent a rear wall 13 so that the rear wall 13 of the first part and rear wall of the second part 30 form a substantially continuous surface.

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 wa. The width of the second part 12 (ie from the rear wall to its front wall) is 100 mm.

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 as follows and as shown in Figures 2 and 3. 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 3. 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 of a width no greater than the blocks 22 and so it is preferred that the chimney block 23 in Figure 3 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 2S 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 pro jecting 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.

Thus the rear wall 13 of the block and the second part 12 are adapted to be built into an adjacent wall.

As shown in Figure 4, a flue liner may be mortared into the flue 11 if desired or such flue liner may be permanently inserted dur ing manufacture.

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

It will be understood that in each case, the chimney blocks may readily be carried by a single man so that the minimum 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.

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

Reference may be made to my copending patent application 28538/77 (Serial No.

1 604 385) from which this patent application is divided.

WHAT I CLAIM IS: 1. A chimney block for forming a chimney in a building comprising a first part of generally rectangular horizontal crosssection incorporating a generally vertical flue portion and a second part comprising a projecting member of generally rectangular horizontal cross-section adapted to be built into and forming part of an adjacent wall of the building, the second part extending from a first side of the first part adjacent a second side adjacent said first side, so that one side of the second part and said second side of the first part form a substantially continuous surface and a second side of the second part adjacent said first side having a width no greater than the width of the wall into which it is to be built.

2. A chimney block as claimed in Claim 1 in which said flue portion is centrally disposed within said first part.

3. A chimney block as claimed in Claim 1 or 2 in which said width of said second side of the second part is 100mm.

4. A chimney block as claimed in any of Claims 1 to 3 of lightweight aerated clay.

5. A chimney block as claimed in any of Claims 1 to 4 in which the second part is of a height equal to or a multiple of the height of standard bricks or blocks of which the wall is to be constructed.

6. A chimney block as claimed in any of Claims 1 to 5 including an integral chimney liner.

7. A chimney block as claimed in any of Claims 1 to 5 adapted for use with a separate chimney liner.

8. A chimney comprising a plurality of

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

Claims

**WARNING** start of CLMS field may overlap end of DESC **. bottom surface 18 to the upper surface 19 of the block, and a second part 30 of generally rectangular horizontal cross-section adapted to be built into an adjacent wall of a house. The second part 30 comprises a protecting member 12 which protrudes from a side wall 15 of the first part I 0 adjacent a rear wall 13 so that the rear wall 13 of the first part and rear wall of the second part 30 form a substantially continuous surface. 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 wa. The width of the second part 12 (ie from the rear wall to its front wall) is 100 mm. 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 as follows and as shown in Figures 2 and 3. 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 3. 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 of a width no greater than the blocks 22 and so it is preferred that the chimney block 23 in Figure 3 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 2S 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 pro jecting 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. Thus the rear wall 13 of the block and the second part 12 are adapted to be built into an adjacent wall. As shown in Figure 4, a flue liner may be mortared into the flue 11 if desired or such flue liner may be permanently inserted dur ing manufacture. Figure 2 illustrates a side view of a chim ney built with chimney blocks according to Figures 1. It will be understood that in each case, the chimney blocks may readily be carried by a single man so that the minimum 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. The invention is not restricted to the details of the foregoing examples. Reference may be made to my copending patent application 28538/77 (Serial No.

1 604 385) from which this patent application is divided.

8. A chimney comprising a plurality of

chimney blocks as claimed in any of Claims 1 to 7 laid above one another so that their flue portions align and said second parts of some said blocks extend in one direction and said second parts of some other blocks extend in the opposite direction.