Patent ID: 7086624

Claim:
An accumulator-feeder device for accumulating separated coils of yarn to be fed to a textile, knitting and stocking machines, comprising: a winding drum ( 15 ) turning around a rotating axis (X), means for providing the yarn to said drum and means for furnishing the yarn to the textile machine needing feeding, where the winding drum ( 15 ) is composed of two connected cage rotors, opposite each other, each rotor having a head ( 16 , 17 ) from which rods ( 19 , 25 ) protrude facing towards the head of the other rotor and intercalated with the rods of the latter, characterized byte fact that the rods of said two rotors form peripherally corresponding cylindrical surfaces (A, B); a first rotor rests on said rotating axis (X), whereas the second rotor is oscillating on an axis (Y) at right angles to the rotating axis (X), and outside the plane containing this rotating axis and positioned on a level the head ( 17 ) of said second rotor; the peripheral surface (A) of the first rotor has an axis which coincides with the rotating axis (X) of the winding drum, whereas the peripheral surface (B) of the second rotor has an axis (Z) inclined with respect to the rotating axis (X) starting from said oscillating axis (Y); and the peripheral cylindrical surface (B) of the oscillating rotor is on a slant with respect to the peripheral cylindrical surface (A) of the first rotor and intersects with the latter in an intermediate of the drum so that the peripheral surface (B) of the oscillating rotor protrudes from two diagonally opposite parts of the peripheral surface (A) of the other rotor forming two conical lobes (C, D) adjacent to the opposite heads ( 16 , 17 ) of the drum and protruding depending on the inclination of an oscillating rotor in respect to the first rotor resting on the rotating axis (X), wherein an electric switch ( 27 ) is associated with the head ( 17 ) of the oscillating rotor, inserted in an electric circuit of a motor unit which drives the rotation of the drum, the electric switch being set up to start and stop drum turning in response to the oscillations of said oscillating head respectively between a first slanting position, corresponding to a minimum quantity of yarn on the drum, and a second slanting position, corresponding to a maximum quantity of coils of yarn on the drum, said first slanting position being set by a spring ( 26 ) and by a positive stop, said second position being set by a variation in the slant of the second cylindrical surface (B) caused by the yarn gathered on the drum.