DE614662C - Method of sewing foam rubber soles to slippers and slipper made by this method - Google Patents

Description

Method of sewing foam rubber soles to slippers and after slipper manufactured using this method Kaanelhaarschuhe, one has so far already foam rubber soles o. The like. Used that finished in a certain shape with heel and a top layer of crepe rubber; delivered will. The attachment of such soles to the fabric was previously only possible through vulcanization or gluing is known, or the rubber sole has been sewn through with lockstitch.

You probably have ordinary rubber soles for sports purposes with blind stitching sewn, but mostly an insole, felt sole or the like was rider-sewn, or it special devices were used to protect the seam, mostly on leather soles. Here you have also arranged laterally protruding tabs or depressions, which served to hide the seam.

The invention now consists in that known for felt soles Reversing process on foam or sponge rubber soles transfers, using the known edge strips even with such types of rubber special stresses Enter turn.

For this purpose there is a vertically protruding upper side on the edge of the sole Edge strip arranged, which is bent when sewing in the turning process, with tension arise, which disappear again when the shaft is turned back; the sidebar then lies upright close to the puncture and covers it.

Especially with such soft and at least porous types of rubber, the Seams without a covering are particularly at risk because of the flexibility of the material has a particular tendency to be exposed to the outside.

In the drawing, the invention is, for example, in section Foam sole: shown.

Fig. I shows a section through the shoe and sole of a normal shoe, A.bb. Fig. 2 shows a section with the shoe turned around, Fig. 3 shows with the shoe broken away Part the covered seam.

In the drawings, a commercially available foam or sponge rubber sole i is arranged with a vulcanized crepe strip 3, which is provided with edge edges q. is provided. The felt or camel hair shaft 2 is fastened within the marginal edge in the usual way. This attachment was made previously by dropping cure: the sole i or by sticking with liquid raw rubber. The new method now sews the shaft 2 onto the rubber sole by preparing the workpiece in the usual way, as in Fig. 2, so that the shaft is under the sole and the edges .des. Exposed shaft for sewing. As a result of this preparation, the foam mini sole i is stretched below the edges of the upper at 6, in that the edge q. is bent downward by the shaft. In: these stretched rubber parts, which run around the sole like a ring, the seam 5 is now attached with a special machine, whereby the seam creates a groove 7 and thus connects the upper edge with the sole through stitch 5. When turning over, the edge q is then placed. back up again, as in Fig. i, and the tensioned parts of the sole at 6 pull together so that the seam 5 does not exert any tearing effects on the rubber.

So far, there have been finished profiled foam rubber soles of this type in Turning process not yet established, and only through this type of the above This method can achieve a perfect seam fastening of the shaft with the sole turn around.

Claims (2)

PATENT CLAIMS: i. Method for sewing on sponge or foam rubber soles on slippers without a midsole, characterized in that .the with an upright, the upper side protruding edge strip (q.) provided foam rubber sole (i) or the like. as an outsole with the inwardly curved edge map of the upper (2) in the turning process is sewn in such a way that the upright standing during sewing of the turned shoe Edge strip (q.) Is bent, but after turning back the resulting seam covers above the sole. 2. Slipper manufactured according to the method of claim i, characterized by a profiled, well-known foam or sponge rubber sole, the upright edge of which is sewn with a seam (5) after turning back Covers the edge of the shaft.