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(11) | EP 1 132 510 A3 |
(12) | EUROPEAN PATENT APPLICATION |
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(54) | Anti-balloon device for weaving loom weft feeders |
(57) In a weft feeder (1) comprising a fixed drum (2) on which a rotating arm (3) winds
a weft reserve (RT) whose turns unwind from the drum (2), passing through a terminal
thread guide (G) under the control of a braking means (4), an anti-balloon device
(5) constituted by a frustum-shaped ring (5a) whose smaller diameter is slightly larger
than the diameter of the feeder drum (2); the ring is fitted on the drum and is arranged
directly ahead of the braking means (4), and the ring (5a) is connected, by way of
pivoting means (6) with controlled rotation, to the structure of the feeder (1) so
that it can be inclined at an angle to the longitudinal axis of the drum (2) in order
to pass from an active position, in which the ring is at right angles to the axis
of the drum (2), to a position for threading the feeder (1), in which the ring is
inclined at an angle with respect to the drum axis. |