DE188738C - - Google Patents

Description

IMPERIAL

PATENT OFFICE.

V ^ 188738 - ■ CLASS 67c. GROUP

of workpieces.

The most common tools for buffing workpieces, especially in the Shoe manufacture, have only a single layer of Buffiermaterial, z. B. sandpaper, that is pulled over and moved by a carrier. When the layer is worn out the tool must be taken out of service and given a new coating. They are tools too

ίο known where several layers of Sandpaper are arranged, however, on different sides of a carrier, so that after after looping through one layer, the carrier must be turned over.

According to the present invention, the buffing tool is now made up of a plurality of Pieces of sandpaper or other suitable material put together in layers are placed on top of each other that the

ao effective areas, d. H. the surfaces bearing the sand covering, all in the same direction lie. You can use the tool continuously after sanding through the top layer continue to use, as the second layer will appear immediately and takes effect. It is not even necessary to remove the remnants of the sanded-through layer remove, as these will be eliminated automatically during machine operation. This will the work with such tools, especially with machines, is greatly facilitated. The object of the invention is thus of 'such older constructions differentiated, in which the tool composing cloth layers o. The like. All work with the edge at the same time on the workpiece, while in the present case, act with a surface. Some particular embodiments that are of particular importance for practice are described in detail below. . ;

Fig. Ι is a side view, partly in · ' Cut.

Fig. 2 is a section through the Buffier ^ disk and the end of the parts used to fasten and move the disk Machine.

Figure 3 is a perspective view of another embodiment of the invention.

4 explains the mode of operation when buffering the angle between the heel front and sole joint surface of a shoe.

In the embodiment shown, the Buffier disc is made up of several circular ones Discs 1 made of emery or sandpaper or the like. Composed. The work surfaces of the discs are all directed downwards. The discs are concentric to one another and their diameter decreases from bottom to top. This creates a thin, effective edge, and wins at the same time one has the advantage that when the Buffing disc is bent open in FIG Weave the edge of the top layers as a result of pressing on the work surface not beyond the edge of the underlayer. can kick. Above the buffing layers is an abutment 5 attached, which from

Claims (5)

a piece of leather or cardboard respectively. other material not suitable for buffing, which is almost as large as the top layer of buffing material and therefore supports it almost to the edge. However, since this abutment is also flexible, the mobility of the Buffier disc is not inhibited. In use, the buffing disk is attached to the end of the spindle ίο of a polishing or buffing machine by means of a holder 2. The holder 2 is fastened to the spindle by means of a screw penetrating a central hole in the Buffing disk and has two lateral tips 2 which engage through holes in the Buffing disk into a disk at the end of the Buffing disk. By turning the buffing spindle, the buffing disk is activated. In the embodiment according to FIG. 3, eyelet rings 4 are inserted into the holes through which the buffing disc is attached to the buffing spindle and hold the entire layers of the buffing disc including the abutment together. In the embodiment according to FIGS. 1 and 2, the Buffing disk is curved downwards, but good results can also be achieved with completely flat disks. Buffing disks of this type are particularly useful for buffing the joint surface of shoes, as can be seen in FIG. The thin edge of the Buffier disc bends so far under the pressure of the shoe held against it that all leather particles are buffed with gentle but even pressure. As the size of the individual layers decreases upwards, it cannot happen that the upper layer protrudes over the lower one when it is bent open, as a result of which it could scratch the front of the heel or rub it off. The thin edge of the Buffier disc also enables the disc to penetrate into the sharpest angles between the heel front and the joint surface and to buff the surface here completely. Pa τ ε ν τ - A ν s ρ r ü c U-E: 1. Tool for buffing, cleaning, polishing or similar treatment of Workpieces, characterized in that there are a plurality of pieces Schabbezw. Buffier material comprises, the layers parallel to the effective surface of the Tool are arranged one above the other. 2. Tool according to claim 1, characterized in that the superimposed Layers of scraping or Buffing material are attached to each other in one or more points to make the tool to be able to handle as a whole. 3. Tool according to claim 2, characterized in that the edge parts of the Layers are not connected to each other, so that they shift against each other can. 4. Tool according to claim 1, characterized in that, the placed one on top of the other Pieces of scraping or buffing material arranged in a circle and in concentric layers of decreasing size so that a thin, effective edge is obtained. 5. Tool according to claim 4, characterized in that the size of the work surface the different pieces of buffing material gradually decrease from the lower part to the upper part of the tool, in such a way that the layers on top do not extend over the edge of the lower ones, when the tool is bent upwards by contact with the workpiece. 1 sheet of drawings.