Weft supplier for shuttleless looms
OwnerGiuseppe Vischianiinventor
Life of this patent
Estimating the term…
Abstract
A weft supplier for shuttleless looms comprises a drum (6) for the yarn reserve put in rotation by a motor (30) through a clutch (2). The yarn is taken up from the reserve and transferred to a passage between the drum (6) and a cylindrical conical body (13) lying at a given distance on the drum outlet end. Said cylindrical-conical body (13) is rotated synchronously and without shiftings in relation to said drum (6) by means of permanent magnets (12, 16) on facing surfaces of said body (13) and drum (6). The drum (6) bears braking bristles (17) that insist on an area of the cylindrical conical body (13).
Claims8
A weft supplier for shuttleless looms, including:
- a drum 16) having a front end rotated by a motor (30) and on which a reserve of yarn turns is wound under the control of a detector (8) for switching on and off the rotations of the drum (6), said yarn turns being then unwound to supply a Icom, passing through a brake formed by one or more rows of bristles, the improvement comprising:
- a cylindrical-conical body (13) coaxial with said drum (6) and rotatably supported by bearings (15) mounted on a projecting arm (14), a free annular space (19) defined between said cylindrical-conical body having a truncated core portion (13) and the winding drum (6) to allow a yarn passage towards the Icom;
- the drum (6) being provided with at least one row of bristles (17) extending radially in said annular passage (19) in an outward direction;
- means provided for causing a rotation of the cylindrical-conical body (13) equal to and synchronous with that of the drum (6);
- a first series (12) of permanent magnets disposed at the front end of the drum, the permanent magnets being equidistributed on the drum with circumferentially alternate polarities;
- and a cylindrical portion (21 ) of said cylindrical-conical body (13) carrying a second series (16) of permanent magnets, equidistributed on the cylindrical portion and having circumferentially alternate polarities, the magnets of the two series radially facing each other.
Dependencies are inferred from the claim text.