DE265955C - - Google Patents

Description

■ IMPERIAL

PATENT OFFICE

Leave the longitudinal ribs and grooves required for sealing on plain tiles can be produced on the extruder without difficulty, as it is in the direction of movement of the strand run, while the production of transverse ribs and transverse grooves does not is easily possible on the extruder.

The invention now relates to a method

ίο to produce the necessary for the transverse seal Transverse rib and transverse groove in plain tiles and the like on the extrusion press. While it is already a method of manufacture the hanging lugs on roof tiles on the extrusion press become known, which can also be used with appropriate training Production of the cross ribs could be used. However, this procedure would require that each time a transverse rib is formed, the strand is held up in the press mouth by holding a board in front of it or the like would, with which of course a reduction in production would be connected.

The method according to the invention now eliminates this disadvantage in that on the strand coming out of the press mouth in the plane of the strand movement running stroke is carried out, which at the corresponding point of the brick the The material compresses and thus forms the transverse rib. This method has the advantage that the Strand is constantly in motion, so that compared to the known method there is an increase in production.

The invention also enables the advantages of the extrusion press the turret press, which in much faster and therefore cheaper work as well as in significantly lower acquisition costs exist for the production of plain tiles to make usable.

The transverse groove required for the transverse seal on the underside of the tile can be known in a known manner Way can be made by scraping or cutting out, the device being advantageous for producing the transverse rib connected to that for producing the transverse groove can be.

In the drawing, an embodiment of a plain tile is shown, which is produced by the method according to the invention.

Fig. Ι shows the brick in top view,

Fig. 2 in bottom view;

Fig. 3 is a section along line AB and

FIG. 4 shows such a line CD in FIG. 1 in the direction of arrow P. FIG.

During production by the extrusion press, the brick b receives longitudinal ribs c on the upper side and longitudinal grooves d on the lower side, which of course extend over the entire length.

If the brick has come out of the mouth of the press, the transverse groove f is made on its underside by hand or by machine.

Likewise, the nail holes g are then made by the fall of a punch, and

At the same time, a tool strikes the rear edge of the brick from the machine, compresses the pressed material and produces the transverse rib α on the top of the brick.

When laying the bricks, the grooves d of the upper brick cover ribs c of two underlying ribs, and the groove f engages over transverse ribs α of two adjacent lower bricks.

Claims (1)

Patent claim: A method for producing bricks with transverse ribs and transverse grooves on the extruder, characterized in that a blow running in the plane of the strand movement is performed on the brick emerging from the press mouth, which compresses the material to be pressed and thus produces a transverse rib (a). 1 sheet of drawings.