The invention relates to a device for attaching and removing a masonry guide to and from an already brick-built part of a brick wall to be further erected, comprising a joint body which is provided with means for attaching at least one masonry guide attaching element and which is configured to be placed between building bricks in a joint, wherein the at least one masonry guide attaching element can be connected to the joint body and to the masonry guide. Such a device is known from WO 2014/098585 Al.

During the laying of the outer leaf of a cavity wall by means of bricks and joint material wooden masonry guide beams (battens) are usually attached vertically to the inner leaf close to the corners. These masonry guide beams serve for level tensioning of horizontal wires along which the upper row of fresh bricks is laid. A known assembly for this purpose consists of several wooden battens and nails with which the masonry guide is fixed to the inner leaf.

Arranging these masonry guides in this way is time-consuming. Long masonry guide beams are therefore used so that they do not, or less frequently, have to be adjusted in the height. The attaching means for the masonry guide beams also get in the way during the bricklaying.

Simply screwing battens fixedly to the building bricks to be laid is not desirable, because this can result in damage to the building bricks. In addition, fixedly screwing the battens by means of a normal plug in the joints is undesirable because this may cause cement residues to leak over the brick wall when the plug is removed. This results in high cleaning costs.

The earlier document EP 2 411 602 Bl already shows a partial solution to the above stated problem by attaching the masonry guide to the inner leaf of a cavity wall with masonry guide attaching means. Figure 1, copied from EP 2 411 602, shows an assembly for temporarily attaching a vertical masonry guide beam A12 to an inner leaf A10 of a cavity wall during the laying of an outer leaf Al 1 of a cavity wall, comprising an inner leaf attaching part A6 for attaching the assembly to inner leaf A10, a masonry guide beam attaching part A4 for attaching the assembly to masonry guide beam A12, and a connecting part Al, A2 for mutually connecting the inner leaf attaching part A6 and the masonry guide beam attaching part A4. During the bricklaying the masonry guide attaching means Al, A2 however still get in the way of the brickwork and the insulating material A13 which must be placed in the cavity. In addition, the solution cannot be used in the erection of a half-brick bond wall.

The above stated document WO 2014/098585 Al shows a device similar to the device of EP 2 411 602 Bl, but which is provided with joint bodies which enable the masonry guide attaching means to be attached between the joints of an already brick-built part of the brick wall to be further erected. The figure 2, known from this document, shows how, instead of attaching masonry guide beam B 100 to the inner leaf, masonry guide beam B100 can also be attached to the outer leaf, thus an already brick-built part of the brick wall to be further erected, by means of a joint body B10.

The whole device according to WO 2014/098585 Al comprises the joint body B10 and a number of masonry guide attaching elements B21, B22. Joint body B10 comprises a first part Bl 1 and a second part B12 which can be slid into first part Bl 1. The first part Bl 1 is for this purpose thicker in the height direction than the second part B12, and the second part B12 tapers toward a visible side, on which the masonry guide attaching elements are attached. The document describes that the joint body consists of two members which are slidable into each other, for instance by being struck with a hammer. Because the two parts have to slide into each other the joint plug has a considerable thickness and cannot be used when a very thin joint is desired.

Finally, NL 2 004 502 C describes a device and a method for attaching adjusting elements for masonry under construction. The device comprises a first element or attaching element 4 to which an adjusting element 7 can be attached, and a second element 2 comprising a receiving space 3 into which the first element 4 can be slid. The first element 4 can be displaced relative to the second element 2 between a first position, in which first element 4 is enclosed by second element 2, and a second position in which first element 4 protrudes outside second element 2 and also outside the joint 28, so that adjusting element 7 can be attached thereto. The first element 4 and the receiving space 3 can have a tapering part, whereby first element 4 becomes jammed when slid to the second position, or first element 4 can comprise an end stop element 18 which prevents it from being slid wholly out of receiving space 3. The device described here is set into a joint 28 in the first (slid-in) position, then slid out in order to attach the adjusting element 7, and slid in again after use. Space then remains in joint 28, which can be filled with additional mortar 9.

The invention has for its object to provide a device with which the attaching and removal of a masonry guide becomes less time-consuming, with which material and waste can be saved, with which the bricklayer is impeded less during the bricklaying, a better quality of brickwork can be obtained, the bricklaying requires less time and/or a thinner joint can be arranged.

According to the invention, this is achieved in a device of the above described type in that the joint body comprises a base member and a removal member, wherein the removal member can be separated from the base member and after separation can be slid from the joint in a direction substantially perpendicularly of a visible side of the brick wall to be erected.

Because the removal member can be separated from the base member, the base member need be no thicker than the removal member, as seen in the direction of the joint height. The whole joint body can hereby take a thinner form, and the two members can have the same thickness. Material is further saved in that the removal member of the joint body can be removed from the wall and only the base member remains in the joint.

By removing the removal member from the wall in the sliding direction no damage is done to the joint or to the building bricks, whereby no costs will be made for repairing or cleaning thereof. Only a gap in which the removal member was situated remains in the joint, which gap can be easily smoothed over with joint material.

In an embodiment of the invention the base member is provided on a front side directed toward the visible side of the wall with a male or female slide connection member. A rear side of the removal member directed toward the front side of the base member is then provided with a complementary slide connection member.

The slide connection members provide for limited movement in determined directions. Because the base member and the removal member cannot move relative to each other in a direction other than the sliding direction, the joint body provides rigidity in those directions and the base member and the removal member remain aligned relative to each other.

The connection can further also be a clamping connection, whereby the members do not accidentally separate during arranging, and/or a releasing connection, whereby the separating in the sliding direction is facilitated.

It is on the other hand also possible to envisage the slide member and the base member being releasably connected to each other by means of a screw connection. The two parts of the joint body can thus be connected to each other and be detached from each other again in simple manner.

In another embodiment of the invention the removal member is provided with engaging means on a front side directed toward the visible side of the wall.

The engaging means make it easy for the bricklayer to pull the removal member out of the joint.

In another embodiment of the invention the engaging means comprise at least one blind screw hole extending from the front side into the removal member. The bricklayer can screw one or more screws into the at least one screw hole, after which he can pull the removal member out of the joint by said one or more screws.

In another embodiment of the invention the joint defines a main plane and the joint defines a height direction transversely thereof. A dimension of the joint body in height direction of the joint is considerably smaller than dimensions of the joint body in directions parallel to the main plane of the joint.

The joint body is hereby substantially thin in this embodiment. Giving the joint body a thin form enables it to be placed on a building brick in simple and stable manner. No joint material is then necessary between the building bricks and the joint body, unless a joint height greater than the thickness of the joint body is desired. The large surface area with which the joint body lies between the bricks provides sufficient grip for attaching a masonry guide to the joint body.

In another embodiment of the invention the joint body is thinner than 10 millimetres, more preferably thinner than 7 millimetres, still more preferably thinner than 5 millimetres and most preferably thinner than 4 millimetres.

Giving the joint body a form which is so much thinner than the joint body according to WO 2014/098585 Al makes the joint body suitable for use during the erection of a wall wherein a very small joint height is desired, to less than even 4 millimetres (but greater than or equal to the thickness of the joint body). Brickwork with very thin joints is highly valued by users, and is less susceptible to damage.

In another embodiment of the invention the removal member and the base member have substantially the same dimension in the height direction. This makes it easier to place bricks and joint material on the joint body.

In another embodiment of the invention the dimensions of the removal member in width or height direction increase in the removal direction, as seen from the base member to the visible side of the wall.

Because the width and/or thickness of the removal member decrease in this direction, the removal member has a releasing form relative to the joint. The removal member can hereby be removed more easily by the bricklayer, and pushing the removal member further into the joint is impeded.

In another embodiment of the invention the base member is provided with means for holding it in the joint. The front side of the base member can also be wider than the rear side of the removal member, whereby recesses are formed in which joint material can collect.

By providing the base member with means for holding it in the joint it is not pulled out of the joint when the removal member is pulled out of the joint.

In another embodiment of the invention the means for being held in the joint comprise at least one opening for receiving joint material, formed in the base member. The joint material can then obtain a better grip on the base member so as to hold it.

In another embodiment of the invention the base member tapers from the rear side to the front side so that it has a non-releasing form in the sliding direction. The base member hereby remains more firmly in place when the removal member is pulled from the joint.

In another embodiment of the invention the means for attaching the at least one masonry guide attaching element comprise at least one screw hole formed in the front side of the base member. The at least one screw hole can be used by the bricklayer for screwing screws into for the purpose of attaching attaching means. The or each screw hole is preferably blind in order to prevent joint material from entering.

In another embodiment of the invention the means for attaching the at least one masonry guide attaching element comprise at least one continuous aligning hole formed from the front side of the removal member.

The at least one aligning hole ensures that the bricklayer can screw screws into the first body without having to aim. Because of the aligning holes, the bricklayer cannot accidentally place a screw askew, causing the base member to be missed and/or a building brick and/or the joint to be damaged.

In another embodiment of the invention the at least one aligning hole in the removal member lies substantially in line with the at least one screw hole in the base member. A screw carried into an aligning hole on the front side of the removal member will then automatically align in the screw hole of the base member.

The screw which is screwed fixedly into the base member from the front side of the removal member holds the base member and the removal member together and provides strength for attaching the masonry guide attaching means to the joint body.

In another embodiment of the invention a dimension of the joint body in a direction perpendicularly of the visible side of the wall to be erected is at most equal to the thickness of the wall.

Because this is the maximum length of the joint body, the joint body need not protrude from the wall and does not get in the way of insulating material or masonry guide attaching means. The joint body can thus in length direction also be smaller than the thickness of the wall, whereby the joint body is not visible on either side of the wall. This latter is particularly important for half-brick bond walls, which are visible on both sides.

In another embodiment of the invention the removal member is provided with positioning edges. The positioning edges are parallel to the visible side of the wall and extend outside the plane of the joint body.

The positioning edges aid the bricklayer in placing of the joint body on the building bricks. When the positioning edge lies along the building bricks, the longitudinal direction of the joint body is parallel to the sliding direction, and the front side of the joint body coincides with the visible side of the wall to be erected.

The invention also relates to a method for attaching and removing a masonry guide to and from an already brick-built part of a brick wall to be further erected. Such a method is also already known from WO 2014/098585 Al . Both in this known method and in the method according to the invention the joint body is firstly placed on an already brick-built part of the wall. A layer of joint material is then arranged on the same brick-built part, wherein joint material is also arranged on and in the joint body if necessary. At least a layer of building bricks is then arranged, whereby the joint body is situated firmly in a joint. The masonry guide can then be attached to the joint body using at least one masonry guide attaching element, after which laying of bricks continues.

Releasing of the masonry guide is done by first releasing the masonry guide attaching means from the joint body. The method according to the invention is distinguished from the known method by the pulling of the removal member of the joint body from the joint in a direction substantially perpendicularly of the visible side of the wall to be erected. This creates a gap in the joint where the removal member once was. The base member remains in the joint. The bricklayer then smooths over the gap in the joint with joint material.

In another embodiment of the invention the joint body in the above described method comprises engaging means, and the removal member is pulled from the joint by these engaging means. The engaging means provide for an easy removal by and sufficient grip for the bricklayer.

In another embodiment of the method according to the invention the removal member is removed from the joint by screwing a screw into a screw hole and pulling the removal member from the joint using this screw. This way of removing a plug from the wall is already known among bricklayers because they already pull cylindrical plugs from walls in this way.

In another embodiment of the method according to the invention the masonry guide is attached to the joint body by screwing a screw into at least one screw hole in the joint body. The screw can, but need not, be carried through the aligning holes first. The screw holes and aligning holes enable easy screwing in of screws by the bricklayer, without the screw being screwed into the joint body askew here.

In another embodiment of the method the removal member is reused in combination with a second base member after being removed from the joint.

Material can be saved in this way, because a new removal member is not necessary for each base member.

The invention further comprises the joint body as above as part of a device or as for use in the above described methods.

The invention still further comprises an assembly consisting of more than one base member as above as part of a device or as for use in the above described methods, and at least one removal member as above as part of a device or as for use in the above described methods.

The invention will be further elucidated on the basis of an embodiment of the joint body shown in the figures, in which: Figure 1 shows a part of the prior art by means of a copy of figure 2 from

NL2011700C with modified numbering;

Figure 2 shows a part of the prior art by means of a copy of figure 1 from

EP2411602B1 with modified numbering;

Figure 3 shows schematically two perspective views of an embodiment of the joint body;

Figure 4 shows schematically a top view of embodiments of the base member and the removal member;

Figure 5 shows schematically and in perspective view how the joint body can be placed on a building brick according to an embodiment of the invention;

Figure 6 shows a schematic perspective view of an embodiment of the invention wherein material is saved; and

Figures 7 shows a perspective view with exploded parts of yet another embodiment of the joint body according to the invention.

The following figures describe joint bodies embodied according to the invention as example. The joint bodies are used in an already known device as described above with reference to figure 1 and figure 2.

Figure 3 shows an embodiment of the joint body 1 of the invention. The joint body 1 of figure 3 consists of a base member 2 and a removal member 3, shown lying against each other in this figure. The figure shows a screw hole 11 on the front side 7 of removal member 3. A screw can be screwed into this screw hole for pulling removal member 3 from between building bricks thereby later. In the embodiment of figure 1 base member 2 is provided with means for being held in the joint. In this embodiment these are holes 12 in which joint material can be arranged. This figure further shows how base member 2 is provided with screw holes 13 and that these lie in line with aligning holes 14 in removal member 3.

Figure 4 shows embodiments of base member 2 and removal member 3 separately of each other. Additionally shown here are: front side 5 of base member 2, rear side 6 of base member 2, front side 7 of removal member 3 and rear side 8 of removal member 3. Attached to the rear side 8 of removal member 3 in this example are two male slide connection members 9, which are complementary to two slide connection members 10 in the front side 5 of removal member 3. In this example the slide connection members are beam-shaped pins.

Figure 5 shows how joint body 1 is placed on a building brick 15, wherein front side 7 of removal member 3 coincides with the visible side of the brick wall to be erected.

Direction 4 is hereby defined as being oriented perpendicularly of this side and outward, toward the bricklayer. Figure 6 shows an example wherein dispensing with material has resulted in a more economical embodiment of the invention. Shown here is base member 2 of joint body 1, wherein only the front side 5, two sides and the screw holes 13 are enclosed by material. The upper side, lower side and rear side 6 are open in this example. Dispensing with the upper side in the removal member, as in the base member in this example, is not possible because joint material then comes to lie, accidentally or otherwise, on the upper side of the removal member, which would impede removal of the member.

Finally, figure 7 shows an alternative embodiment of joint body 1, wherein removal member 3 is releasably connected to base member 2 by means of a screw 16. This screw 16 is screwed through a hole 11 in removal member 3 and a hole 5 in base member 2. In order to remove the removal member 3 after the laying of bricks screw 16 can simply be unscrewed, after which removal member 3 can be separated from base member 2. Further visible in this embodiment are two positioning edges 17 which form a stop when joint body 1 is placed on a previously laid layer. Positioning edges 17 are pressed against the visible surface of the brickwork, thereby ensuring that the front side 5 of joint body 1 lies parallel to the visible surface of the brickwork and all holes for the screws and the like are oriented perpendicularly of the visible surface.

Although the invention has been elucidated above on the basis of a number of embodiments, it will be apparent that these can be varied in many ways. The scope of the invention is therefore defined solely by the following claims.