Sulzer Brothers Limited

Mario Tamaro

Hans Zollinger

The tuck-in needle of a mechanical selvedge-forming device has a catcher for a yarn end following a needle tip. The catcher is subdivided into an entry zone and a trough screened from the entry zone by a hook disposed towards the trough. In its catching movement the needle is moved only towards the weft yarn so that the yarn moves into the entry zone of the catcher. The weft yarn then slides inclinedly over the outside of the hook until passing by way of the hook tip into the catcher interior. The weft yarn can be drawn into the cloth selvedge in this position. This construction enables the tucking-in to be very simple.

Tuck-in needle for a selvage forming device

The apparatus contains a ribbon wheel driven in alternating direction of rotation with a flexible insertion ribbon being wound and unwound in a first looping region of the ribbon wheel and lappable over more than 360.degree. of the circumference. A ribbon type guide element loops the portion of the insertion ribbon present on the ribbon wheel. The insertion ribbon and the guide element are each fastened at one end in a trough-like depression of the ribbon wheel by a recessed clamp which has a support surface adapted to the adjacent surface portions to be lapped and ascending in a circumferential direction in a continuous arc. The other end of the guide element is fastened by a second clamp disposed in the same or another depression.

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Ruti, Switzerland

Mario Tamaro