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EP0164032A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Weft feeder for weaving looms

Assignee: Roj Electrotex SpA
•
Filing: 1985-05-24
•
Granted: —
•
Expires: 2005-05-24
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Abstract

Abstract Weft feeder for weaving looms, of the type wherein the drum (1) around which the weft yarn winds to form the reserve is held stationary, while the turns (3) of said reserve are laid thereon by a rotating reel (2) and are moved forward, mutually spaced, by a set of columns (5) prevented from rotating in respect of said drum (1), but partially and variably emerging from special seats of its periphery. The ensemble of said columns has a frustoconical profile, each column (5) being tapered towards the feeder outlet end, until it no longer emerges from said seats where there is maximum tapering. A photoelectric cell unit (8), moving parallely to the axis of the drum (1), detects the presence and the consistency of the weft yarn reserve wound thereon, in order to control the rotation and regulate the speed of the motor of said feeder.

Inventors

  • 👤 Fiorenzo Ghiardo
  • 👤 Bruno Maina

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-05 01:43
CPC Classifications
D; D03; D03D; D03D47/00; D03D47/34; D03D47/36; D03D47/361; D03D47/367

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 110 words
1) Weft feeder for weaving looms - of the type wherein the drum (1) around which the weft yarn winds to form the reserve is held stationary, while the turns (3) of said reserve are laid thereon by a rotating reel (2) and are moved forward, mutually spaced, by a set of columns (5) prevented from rotating in respect of said drum (1), but partially and variably emerging from special seats of its periphery - characterized in that, the ensemble of said columns has a frustoconical profile, each column (5) being tapered towards the feeder outlet end, until it no longer emerges from said seats where there is maximum tapering.
Claim 2
Dependent Claim 110 words
1) Weft feeder for weaving looms - of the type wherein the drum (1) around which the weft yarn winds to form the reserve is held stationary, while the turns (3) of said reserve are laid thereon by a rotating reel (2) and are moved forward, mutually spaced, by a set of columns (5) prevented from rotating in respect of said drum (1), but partially and variably emerging from special seats of its periphery - characterized in that, the ensemble of said columns has a frustoconical profile, each column (5) being tapered towards the feeder outlet end, until it no longer emerges from said seats where there is maximum tapering.
Claim 3
Dependent Claim 51 words
2) Weft feeder as in claim 1), wherein a photoelectric cell unit (8) moving parallely to the axis of the drum (1), detects the presence and the consistency of the weft yarn reserve wound thereon, in order to control the rotation and regulate the speed of the motor of said feeder.
Claim 4
Dependent Claim 30 words
3) Weft feeder as in claim 2), wherein said photoelectric cell unit comprises a photoelectric cell fixedly connected to the feeder frame and a reflecting element mounted on the drum.

References Cited (Backward Citations)

CH381622A Cited
FR2267270A1 Cited
DE2440939A1 Cited
DE3038642A1 Cited
WO1984001394A1 Cited

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