This invention relates to bricklaying.
Building a wall from bricks, blocks, stones, or the like building elements is a relatively skilled task. Within this patent specification the term “brick” shall be used generally to refer to all such building elements.
A wall is built up from ground level in a number of layers or courses of bricks with the bricklayer spreading a layer of mortar along the top of each course of bricks and placing another course of bricks on the layer of mortar. This application of mortar, usually by means of a trowel, is extremely messy and wasteful. Usually excess mortar falls away on each side of the wall. Furthermore, it is relatively difficult to evenly spread the mortar to retain a level course of bricks and the bricklayer needs to spend time embedding in and levelling each brick on the mortar. Also pointing is required to remove excess mortar and give a finished face to the mortar between the bricks. Therefore there is a considerable wastage of mortar, and time spent in cleaning up the mortar joints during building of the wall and in cleaning up the waste mortar which falls away during the wall building.
A number of bricklaying aids have been previously proposed. For example, British Patent Specification No. 2321271 discloses a bricklaying aid which sits on top of a wall to form a rectangular frame having sides which sit along opposite sides of the wall for applying a measured amount of mortar onto the top of the all between the sides of the frame. British Patent Specification No. 1538803 describes a bricklaying tool for controlling the spread and amount of mortar applied to the joints between bricks. The tool has an L-shaped frame for applying a measured amount of mortar along a top face of a wall and against an end face of a previously laid brick on top of the wall. U.S. Pat. No. 4,709,526 discloses a template for application of mortar onto a top surface of pre-cast hollow concrete blocks which have a pair of voids extending between a top and a bottom of the block. The template is seated on top of the block and has panels which cover the voids and channels for applying a layer of mortar along the top edges of the block side walls, around the void and in the middle of the block top face between the voids. In U.S. Pat. No. 4,074,503 there is disclosed a bricklaying device having a rectangular frame for placing on a previously laid course of bricks to define a trough for forming a layer of mortar on top of the bricks ready to receive the next layer of bricks.
The various prior art devices have not been entirely satisfactory and it is an object of the present invention to provide an improved bricklaying tool which is easy to use, particularly for amateur or DIY builders, and is cheap to manufacture.
According to the invention there is provided a bricklaying tool for use in laying bricks to form a wall, comprising:
Conveniently, the mortar guide member is engagable with the wall such that the slot co-operates with the wall to allow deposition of a predetermined amount of mortar in a desired orientation on the wall. Mortar is supported on the brick engagement panel ready for filling the mortar receiving slot and is prevented from spilling off by the mortar retaining flange. Thus a layer of mortar can be readily easily and accurately and cleanly formed on the wall ready for reception of the next course of bricks.
The mortar retaining flange may extend along a rear edge of the brick engagement panel. Thus advantageously mortar is prevented from falling down behind the wall as it is being built.
In a particularly preferred embodiment, the mortar retaining flange extends along a rear edge and along a side edge of the brick engagement panel.
In a further embodiment, the bricklaying tool includes a level indicating means. The level indicating means may be formed by a spirit level. Conveniently, the level indicating means may be mounted on the mortar retaining flange and may be used for indicating both a longitudinal and a transverse level of the mortar guide member. For example, a spirit level may be mounted on a first portion of the mortar retaining flange at a rear edge of the brick engagement panel and on a second portion of the mortar retaining flange at the side edge of the brick engagement panel.
In a further embodiment, the locating means comprises one or more outwardly extending locator elements on a wall engaging face of the mortar guide member at one or both sides of the slot for engagement with side faces of bricks in the wall against which the mortar guide member is mounted. The locating means may comprise two pairs of spaced-apart lugs on a wall engaging face of the mortar guide member on each side of the mortar receiving slot for engagement with both side faces of the bricks in the wall against which the mortar guide is mounted.
In a further embodiment, the locating means is operable to position each side of the slot 10 mm inwardly from side faces of the bricks with which the mortar guide member is engaged in use.
Conveniently, a hand grip may be provided on the mortar guide member.
In a particularly preferred embodiment, the mortar guide member has an elongate brick engagement panel with a mortar receiving slot extending through the panel, an upstanding flange extending upwardly from a top of the panel along one side of the panel, and locator lugs projecting downwardly from a bottom of the panel at opposite sides of the mortar receiving slot.
Conveniently, the mortar receiving slot is open at one end. Ideally, a stiffening strip or strut is mounted above the open end of the slot between panel portions at opposite sides of the slot. The stiffening strut may comprise a pair of arms which project upwardly from the panel at opposite sides of the slot. The arms are then interconnected by a cross member.
A handle may conveniently be mounted on the flange.
In a further embodiment, an upstanding flange is provided extending upwardly from the top panel remote from the legs. A handle may be mounted on the flange.
In another embodiment of the invention, the mortar guide member is cranked intermediate it's ends, having an upper portion for seating engagement with a top surface of a brick and a lower portion extending perpendicularly downwardly from the upper portion for engagement with an end face of a brick.
In another aspect the invention provides a bricklaying tool for use in laying bricks to form a wall, which includes a mortar guide member having a slot for reception of mortar, the width of the slot being less than the width of the bricks for constructing said wall, the mortar guide member having locating means for mounting the mortar guide member on a course of bricks forming portion of the wall with the slot defining with a surface of said wall portion a mortar receiving pocket at said surface which is positioned inwardly of the said side faces of the wall, said locating means comprising at least one pair of spring-loaded locator elements. Preferably two spaced-apart pairs of spring-loaded locator elements are mounted on an underside of the mortar guide member.
In a further aspect the invention provides a bricklaying kit comprising a first bricklaying tool for applying mortar to a top surface of bricks in a wall during construction of the wall and a second brick laying tool for applying mortar to a vertical end face of bricks in a wall during construction of the wall, one or both of said first bricklaying tool and said second bricklaying tool being of a type described herein.
In a still further aspect, there is provided a bricklaying kit comprising a first horizontal bricklaying tool for laying a horizontal course of mortar on bricks when constructing a wall and a second vertical bricklaying tool for forming vertical courses of mortar between adjacent vertical end faces of bricks in the wall. The horizontal bricklaying tool may be as previously described and the vertical bricklaying tool may be the bricklaying tool previously described with the cranked mortar guide member. Alternatively, the vertical bricklaying tool may comprise a mortar guide member having a slot for reception of mortar, the width of the slot being less than the width of the bricks for constructing the wall, the mortar guide member having locating means for mounting the mortar guide member against an upright end wall of a brick with the mortar receiving slot defining with a surface of said brick end wall, a mortar receiving pocket at said surface which is positioned inwardly of opposite side faces of the brick.
The invention will be more clearly understood by the following description of some embodiments thereof, given by way of example only, with reference to the accompanying drawings in which:—
Referring to the drawings, and initially to FIGS. 1 to 8 thereof, there is illustrated a bricklaying tool according to the invention, indicated generally by the reference numeral 1. The tool 1 includes a mortar guide member 2 having a slot 3 for reception of mortar such that when the tool 1 is mounted on a wall 5 as shown in
The wall 5 comprises a number of superimposed courses of bricks 8 with mortar 9 therebetween.
The mortar guide member 2 essentially comprises a mortar receiving platform comprising a C-shaped brick engagement panel 10 having a pair of spaced-apart side elements 11, 12 interconnected at one end by an end element 14 to define the slot 3. As can be seen in
Pairs of locating lugs 19, 20 are provided on an underside of each side element 11, 12 of the panel 10 for engagement with opposite side faces 22, 23 of bricks 8 to centrally position the slot 3 along the top faces 24 of the uppermost course of bricks 8 in the wall 5.
FIGS. 4 to 8 show the sequence for using the bricklaying tool to lay a course of bricks 8 on the wall 5. As can be seen, the tool 1 is seated astride the uppermost course of bricks 8 with a bottom face of the panel 10 seated against the top face 24 of the brick 8 with the locators 19, 20 centrally positioning the slot 3 along the top faces 24 of the bricks 8 to form the mortar receiving pocket 6. This bottom or inner and lower, in use, face of the panel forms a wall engagement means. As shown in
Referring now to FIGS. 9 to 13, there is shown another bricklaying tool 30 according to another embodiment of the invention. In this case, the tool 30 is for neatly forming the mortar between end faces of bricks 8 in the wall 5. The tool 30 has a mortar guide member 31 of cranked configuration including a top panel 32 with a pair of spaced-apart downwardly extending legs 33, 34 defining therebetween a mortar receiving slot 35. As shown in the drawings, the mortar receiving slot 35 extends partially across the top panel 32. An upstanding flange 36 is provided extending upwardly from a side of the top panel 32 remote from the legs 33, 34.
In use, the tool 30 is mounted at one end of a brick 8 with the top panel 32 seated on the top face 24 of the brick and the legs 33, 34 extending downwardly along an end face 25 of the brick 8. The next brick 8 is then placed on the wall 5 abutting the free faces of the legs 33, 34 so that the pair of bricks 8 and the tool 30 define therebetween a pocket 38, open at the top, for reception of mortar 9 which is dropped into the pocket 38 from above to form a neat joint between the two bricks 8, as illustrated in
Referring to
Referring now to FIGS. 15 to 27, there is illustrated another bricklaying tool according to another embodiment of the invention, indicated generally by the reference numeral 60. This is largely similar to the bricklaying tool described previously with reference to FIGS. 1 to 8, and like parts are assigned the same reference numerals. In this case, an additional mortar retaining flange 61 is provided along an end of the brick engagement panel 10 extending forwardly from the rear mortar retaining flange 17. Level indicators 63 formed by spirit levels are mounted midway along each of the mortar retaining flanges 17, 61 at an upper edge of each of said flanges 17, 61 to indicate both a longitudinal and a transverse level of the mortar guide member 2.
It will be noted that the front side element 11 is of greater width than the rear side element 12 projecting forwardly from the slot 3, and in use the wall, to provide a mortar reservoir platform together with the rear side element 12 and end element 14.
In this case a stiffening strut 65 is mounted across the open end 15 of the slot 3. The stiffening strut 65 comprises a pair of arms 66, 67 which project upwardly and outwardly from the side elements 11, 12 of the brick engagement panel 10 at opposite sides of the slot 3. A cross member 68 forming a handle interconnects outer ends of the arms 66, 67.
Two spaced-apart pairs of spring loaded locator elements 70 (best seen in
A ruler 79 is provided along the top of the rear mortar retaining flange 17 as can be seen in
Referring now to
Referring now to FIGS. 35 to 41, there is illustrated another mortar guide member indicated generally by the reference numeral 90. This is largely similar to the mortar guide member described previously with reference to FIGS. 28 to 34 and to like parts are assigned the same reference numerals. Essentially, the only difference is the fact that the legs 82 are more elongated as the mortar guide member 90 is for use with blocks rather than bricks.
Referring now to FIGS. 42 to 44 there is shown another bricklaying tool indicated generally by the reference numeral 100. This is largely similar to the bricklaying tool described previously with reference to FIGS. 15 to 27 and like parts are assigned the same reference numerals. In this case, two spaced-apart pairs of spring loaded locator elements 101 are provided on an underside of the brick engagement panel 10 to position and hold the bricklaying tool 100 on a wall in use. The locator elements 101 are curved flexible lugs or flaps that can flex to accommodate a variation in the width of bricks and securely resiliently clamp the bricklaying tool 100 on the wall during use.
Referring now to FIGS. 45 to 48 there is illustrated another bricklaying tool indicated generally by the reference numeral 110. This is largely similar to the bricklaying tool shown in
Referring now to FIGS. 49 to 52 there is shown another bricklaying tool indicated generally by the reference numeral 120. This is largely similar to the bricklaying tool previously described with reference to FIGS. 45 to 48 and like parts are assigned the same reference numerals. Essentially the only difference is that the legs 33, 34 have been elongated as the tool 120 is for use with blocks rather than bricks.
The invention advantageously provides a bricklaying tool which facilitates the application of mortar to a wall during construction of the wall in an accurate, efficient, repeatable and non-wasteful manner. Uniform layers of mortar can be readily, easily and quickly applied on top of a course of bricks for reception of the next course of bricks or in end joints between bricks in each course.
Further, the need for pointing is eliminated or at least minimised, with neat joints between bricks being achieved by use of the bricklaying tool. Also there is no wastage of mortar as arises in conventional building techniques.
In the specification the terms “comprise, comprises, comprised and comprising” or any variation thereof and the terms “include, includes, included and including” or any variation thereof are considered to be totally interchangeable and they should all be afforded the widest possible interpretation and vice versa.
The invention is not limited to the embodiments hereinbefore described which may be varied in both construction and detail within the scope of the appended claims.
Number | Date | Country | Kind |
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S2001/0116 | Feb 2001 | IE | national |
Number | Date | Country | |
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Parent | PCT/IE02/00019 | Feb 2002 | US |
Child | 10639691 | Aug 2003 | US |