SU46200A1 - Weaving tool for producing alternate strips of different weft density - Google Patents

Description

The existing production of striped monochrome fabrics is mainly based on a part of a different number of threads in the Byrd tooth. With this method of production of fabrics, it is impossible to reach duck strips, and it is also impossible to obtain checkered monochrome fabrics. The proposed device makes it possible to obtain fabrics with alternating strips of different density in duck due to a very simple reworking of the dial mechanism.

In the schematic drawing of FIG. 1, 2 and 3 are three types of the main assembly unit.

The use of the proposed tooling in the dial mechanism can be made almost without changing the existing parts of the loom, with the exception of a slight modification of the lever 8 and lengthening the pinch on which the ratchet 4 of the dial mechanism sits, so that another ratchet 3 can be installed with a slightly larger tooth pitch compared to ratchet 4 (already existing). The relative increase in ratchet pitch 3 depends on the desired degree of density of the weft threads of the sparse strips of fabric. The rotation of the ratchet 3 is carried out by the lever 9 and the dog 2.

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The job of the fixture is as follows. The blade of the baton is connected to the levers 8 and 9 by the already existing pull, but the finger 77 must be raised higher along the slit so that the swing amplitude of the lever 9 is different with the swing amplitude of the lever 5 and the pawl 2 has a span corresponding to the ratchet 3. The swing of arms 9, 8 and dogs 7, 2 is continuous, but dogs start to engage with ratchets alternately due to the action of segments 5 and b attached to ratchet rims. Plates 5 and 6 segments can be of various sizes, looking at how wide the strips should be. Ratchets 3 and 4 are fixed on a common axis and rotation of one relative to the other is unacceptable. In this case, as indicated in FIG. 1, the doggie 2 comes into engagement with the ratchet 3 and feeds it to one tooth, the doggie 7 slides on the plate 5, idle, but as soon as the point t reaches the working parts of the doggie, the doggie 7 will go off the segment and engage the ratchet 4 and the doggie 2 will enter segment 6 at the same time and will stop mating with the ratchet until point n reaches the working ends

dogs, then dogs change roles and t, e.

In that case, if the relationship between the ratchet steps is an ultrasound, a stubborn dog that does not allow the ratchet to turn in the opposite direction, you need to put the ratchet with a smaller tooth pitch, but the ratio between the steps can be equal to any fraction of D %, / 4, Vs, etc .; in this case, dog stubs must be put on both ratchets and ratchets on other sides of the ratchets, which would regulate the sequential operation of dog stubs.

The subject matter of the invention.

A weaving attachment for receiving alternating strips of different weft density, wherein a ratchet wheel 3 with teeth of a different pitch and a pawl 2 mounted on the lever 9, which ratchet wheels 3 4 are attached to the ratchet wheel 4 of the machine’s dialing mechanism attached to the side on opposite parts of the circumference of the semi-circular plates 5 and 5, serving to alternately turn off the ratchets 3 4 by lifting the dogs / and 2.

Fig