DE1056436B - Articulated connector for belts and bands, especially for paper machine drying felts - Google Patents

Description

The invention relates to a connector for belts and tapes, in particular for paper machine drying felts, in which sit on the two straps or felt tabs that are articulated with each other are connected and consist of several layers of fabric, which gradually towards the free ends decrease.

In the previously known designs, the individual layers are glued or sewn to one another. Due to the jerky stresses that occur during operation that arise when the Resulting connector on the guide rollers, takes place in a more or less a short time, a significant wear instead and a loosening of the layers from one another is to be feared.

The disadvantages indicated above in broad outline are eliminated according to the invention in that that all layers of the flaps are woven through. As a result, there are none created by gluing or sewing There are connection points between the layers, which are loosened by the acting forces can. The edges of the individual steps are less sharp than before and are relatively proportionate so low that the impact-like stress and thus the wear and tear are reduced. the The service life of such a connector is therefore much greater than before.

In a further embodiment of the invention, the innermost part of the tabs has at least three layers. aside from that is advantageous, the length of this innermost part of the tabs approximately equal to half the bandwidth, while the length of the remaining layers is the same in a manner known per se. Furthermore, the height of the layers, as known per se, be the same.

According to a modified embodiment, the stepped side of the flaps can be made of tape or felt be facing.

Details of the invention emerge from the description of the exemplary embodiments shown in the drawing. Show it

Fig. 1 and 2 side views of known embodiments,

Fig. 3 is a plan view of an embodiment according to the invention,

Fig. 4 is a side view of Fig. 3,

Fig. 5 is a side view of a modified embodiment and

6 shows, schematically and on an enlarged scale, an embodiment of the fabric of a Tab.

The known connector according to FIG. 1 consists of tabs seated on the belt or felt ends 10, 14. 32, 34, which are single-ply and quilted with the ends 10, 14 or are glued. They have several over articulated connectors

for straps and ribbons, in particular

for paper machine dry feet

Applicant:

Scapa Dryers Limited,
Blackburn, Lancashire (UK)

Representative: Dipl.-Chem. Dr. W. Koch, Hamburg 4,

Simon-von-Utrecht-Str. 43,
and Dr.-Ing. R. Glawe, Munich 27, patent attorneys

Claimed priority:
Great Britain 9 January 1956

Thomas Hindle, Blackburn,

Lancashire (UK),

has been named as the inventor

Wire clips 24, 26 arranged distributed across their width which together with the pin 42 form the joint or hinge. The ends 10, 14 meet at 12 above the ends 28 of the longer wire hook legs close and butt against each other.

If the belt or the felt runs in the direction of arrow A , then there is considerable wear on the front edge 36 and immediately behind the rear edge 38 due to the impact of the guide or guide rollers.

These impact-like stresses and thus the wear and tear are due to the height of the tabs 32, 34 conditional. They may lead to the loosening of the adhesive or stitching connection of the tabs with the Ends 10, 14.

In the known embodiment according to FIG. 2, the tabs consist of two layers 52, 52 'and 54, 54'. the Layers 52, 52 ', like layers 54, 54', are with one another and with the ends 10 and 16, respectively, of the felt or belt glued or sewn. The connector in turn has brackets 24, 26, which together form the hinge joint with the pin 42.

If a felt containing such a connector runs in the direction of arrow A in a paper machine, then at the edges of the steps 56, 56 'and

90Ϊ 508/224

Claims (6)

58, 58 'as well as behind the step 58' at the end 16 of the felt premature wear as a result of the shock-like loads from the guide or guide rollers. Under certain circumstances, these shock-like stresses also cause the adhesive or stitched connections to loosen. In contrast to the above-described embodiments, in the connectors shown in FIGS. 3 to 5, all layers 82 to 88 and 92 to 98 of the tabs 72, 74 are woven through. Such a fabric is e.g. B. for the tab 72 shown in Fig. 6 enlarged. The structure of the fabric is shown schematically in cross section through a straight chain. The flap 72 is then designed in such a way that a single-layer section 88 α is present on ye width, counting from one edge. This is followed by a two-layer section 86 α. This is followed by a three-layer section 84 α, followed by the remainder 82, which takes up approximately half the entire width and consists of four layers. This is a flat fabric, the layers of which are connected to one another by warp threads 89 serving as binders. The arrangement of the weft threads is such that the four-ply portion 82 forms a solid smooth major edge. The tab 74 has a similar cross-section which decreases towards the edges, the sections 92, 94 a, 96 a and 98 a of which consist of four, three, two and one layer. The hinge brackets 24, 26 made of wire, which together with the hinge pin 42 form the hinge joint, are arranged at regular intervals along each edge of the four-day cross-sections 82, 92 of the tabs 72, 74. When a felt equipped with a connector according to Fig. 4 of the invention runs in a paper machine in the direction of arrow A, since the steps are less sharp and relatively flat, the local wear of any part of the flaps or that behind the rear flap is Part of the felt is much less than before. In the embodiment according to FIG. 5, the stresses are even lower than according to FIG. 4, since the binder is on the outside. except at the front and rear connection point on the felt or belt, has no steps, but has a smooth surface. Patent claims: 1. Articulated connector for belts and tapes, especially for paper machine drying felts, in which sit on the two straps or felt tabs that are articulated with each other are connected and consist of several layers of fabric, which gradually follow the free ends decrease towards, characterized in that all layers (82 to 88, 92 to 98) of the tabs (72, 74) are woven through. 2. Connector according to claim 1, characterized in that the innermost part (82, 92) of the tabs has at least three layers. 3. A ^ erbinder according to claims 1 and 2, thereby characterized in that the length of the innermost part (82, 92) of the tabs is approximately equal to half Bandwidth is. 4. Connector according to claims 1 to 3, characterized in that the length of the remaining Layers (84 to 88, 94 to 98) is the same in a manner known per se. 5. Connector according to claims 1 to 4, characterized in that the height of the layers (82 to 88, 92 to 98) is the same in a manner known per se. 6. Connector according to claims 1 to 5, characterized in that the stepped side of the Tabs (72, 74) facing the tape or felt (10). Considered publications:
German Patent No. 21,669;
British Patent No. 695 738. 1 sheet of drawings m 508/224 4.59