TILE LAYING DEVICE

Abstract

The device is designed for laying rectangular or square tiles. It comprises a laying sheet made up of a network of strips 22, 23 forming rectangular or square grids. The projections 24, intended to define the tile positions and their spacing, are located on the strips 22, 23 outside the areas 25 where they intersect. It is used to facilitate tile laying.

Description

The purpose of this addition is to provide improvements to the tiling device described in the main patent. In the accompanying drawings, given by way of non-limiting examples: - Figure 1 is a partial plan view of a laying sheet intended for laying square-shaped tiles, - Figure 2 is a sectional view along the plane II-II of the laying sheet shown in Figure 1, tiles being laid on this sheet, - Figure 3 is a longitudinal sectional view of a strip of the laying sheet, provided with a hole intended to receive a dormant piece of rivet, - Figure 4 shows the assembly of the strip ends by means of rivet-shaped parts. In Figure 1, there is shown a laying sheet 20 intended for laying tiles 21 of square shape. This laying sheet 20 consists of a network of perpendicular strips 22, 23 forming square meshes. In accordance with the present addition, the projections 24 which enable the tiles 21 to be precisely laid and aligned on the sheet 20 are located on the strips 22, 23 outside the areas or points 25 where these strips intersect. In other words, the meshes formed by the strips 22, 23 are smaller than the tiles 21, so that the joints 26 between the tiles 21 located in alignment with the projections 24 are offset with respect to the strips 22, 23. This arrangement has the following technical advantage The coating that is poured into the joints 26 between the tiles 21, can adhere directly to the concrete floor located under the sheet 20, as in the case of a traditional laying without sheet. The joints between the tiles 21 filled with coating thus do not risk becoming detached or cracking, as in the case where the strips of plastic material or the like are located under the aforementioned joints. The laying sheet in accordance with the present addition thus makes it possible to carry out a tiling laying that is just as reliable and resistant as with the traditional laying, with the further advantage of an extremely easy and precise laying thanks to the 24 protrusions which serve as benchmarks for laying the tiles and precisely define the width of the joints 26 between adjacent tiles. In the example represented in FIG. 1, the distance b between each projection 24 and the closest crossing point 25 of the strips 22, 23 is equal to half the distance between two crossing points 25 of the strips 22, 23. In other words, the meshes formed by the strips 22, 23 have sides whose length is equal to half that of the squares. The projections 24 may, as indicated in the main patent, be thermoformed or molded into the plastic material of the strips 22, 23. In the alternative embodiment represented in FIG. 3, the projections are constituted by parts in the form of rivets 24a, for example made of plastic material, driven into holes 24b made in the strip 22 or 23. The rivets 24a preferably have an annular bead 24c with a diameter slightly larger than that of the holes 24b, so as to allow fixing by snap-fastening in said holes. The embodiment shown in Figure 3 simplifies the manufacture of the laying sheet. According to this embodiment, the laying sheets can be provided to users without the rivets 24a which will have to be put in place in the holes 24b by these users. In the absence of the rivets 24a, the laying sheets can be supplied in the form of rolls having a reduced diameter, thus reducing their size. In this embodiment, the laying sheet can be cut from cardboard that has undergone a treatment so as to resist the water contained in the mortar used to fix the tiles. The laying sheets can be fixed edge to edge by rivets 24a engaged in holes made in two ends of strips 22, 23 overlapping each other, as shown in Figure 4. These strip ends can be thinned so that the thickness of these superimposed ends does not exceed the thickness of a band. Laying the tiles using the laying sheet described in this addition can be carried out as follows In a first step, the user lays on the surface to be tiled several laying sheets fixed edge to edge, so as to cover the entire surface to be tiled. Some laying sheets are cut beforehand so that their edge is flush with the limit of the surface to be tiled. After this first operation, which is easy to perform, the user lays the tiles on the laying sheets, so that these sheets are properly applied to the surface to be tiled. At first, the squares are placed upside down, that is to say their dorsal side upwards. Then simply coat the back faces of the tiles with a layer of cement glue, then return them to their final bonding position. When this gluing operation is finished, all you have to do is let it dry, then make the joints, as in a classic installation. Since under the joints 26 between the tiles, there are large spaces not covered by the strips a2, 23, the material used to fill the joints comes into direct contact with the surface located under the tiles, so that this material can adhere to it perfectly.

Claims

DEMANDS 1. A device for laying tiles according to claim 1 of the main patent, intended for laying rectangular or square tiles (21), the laying sheet being made up of a network of strips (22, 23) with rectangular or square mesh, characterized in that the projections (24) are located on the strips (22, 23) outside the areas < 25) where they intersect.

2. Device according to claim 1, characterized in that the distance (d) between each projection (24) and the nearest crossing zone (25) of the bands (22, 23) is equal to half the distance between two crossing zones (25) of the bands.

3. Device according to one of claims 1 or 2, characterized in that the projections are made up of rivet-shaped parts (24a) driven into holes (24bu) made in the strips (22, 23).

4. Device according to claim 3, characterized in that said rivet-shaped parts (24a) are snapped into the holes (24b).