Thread delivery device and thread brake

A yarn feeding device including a storage body defining an axis and a circumferentially continuous withdrawal rim disposed in surrounding relation with the axis, a yarn brake including a frusto-conical, circumferentially continuous braking band oriented substantially coaxially relative to said storage body and which together with said withdrawal rim defines a yarn braking zone, said braking band being elastically deformable in a direction substantially perpendicular to a generatrix thereof, and a braking band carrier disposed to press said braking band in the axial direction against said withdrawal rim, said carrier loosely supporting said braking band to allow same to float relative to both said withdrawal rim and said carrier, said carrier defining a plurality of circumferentially-spaced pressure elements, the respective pressure elements applying alternatingly stronger and weaker pressing forces to said braking band along a circumference thereof.

A yarn feeding device including a storage body defining an axis and a circumferentially continuous withdrawal rim disposed in surrounding relation with the axis, a yarn brake including a frusto-conical, circumferentially continuous braking band oriented substantially coaxially relative to said storage body and which together with said withdrawal rim defines a yarn braking zone, said braking band being elastically deformable in a direction substantially perpendicular to a generatrix thereof, and a braking band carrier disposed to press said braking band in the axial direction against said withdrawal rim, said carrier loosely supporting said braking band to allow same to float relative to both said withdrawal rim and said carrier, said carrier being mounted on a stationary support disposed adjacent said storage body and said carrier being axially loaded by a spring assembly adjustably mounted on said support.

A yarn feeding device including a storage body defining an axis and a circumferentially continuous withdrawal rim disposed in surrounding relation with the axis, a yarn brake including a frusto-conical, circumferentially continuous braking band oriented substantially coaxially relative to said storage body and which together with said withdrawal rim defines a yarn braking zone, said braking band being elastically deformable in a direction substantially perpendicular to a generatrix thereof, and a braking band carrier disposed to press said braking band in the axial direction against said withdrawal rim, said carrier loosely supporting said braking band to allow same to float relative to both said withdrawal rim and said carrier, said carrier being configured for loosely gripping with a clearance at least one of an outer and an inner annular edge of said braking band, and said carrier defining a plurality of circumferentially-spaced resilient pressure elements which project radially inwardly toward the axis and terminate in respective inner free ends which engage said braking band, said pressure elements respectively comprising spokes, spring-like lamellas or pins constructed of plastic or metal.

A yarn brake for a yarn feeding device, said brake including a circumferentially continuous, annular and frusto-conical braking band which is deformable in a direction substantially perpendicular to a generatrix thereof, and a carrier disposed in mechanical engaging relation with said braking band to hold said braking band in a braking position against a withdrawal rim of a storage body during operation of said yarn brake, said carrier mounting said braking band thereon in a non-fixed and loose manner to allow said braking band to freely float relative to said carrier and the withdrawal rim.

A yarn brake for a yarn feeding device, said brake including a circumferentially continuous, annular and frusto-conical braking band which is deformable in a direction substantially perpendicular to a generatrix thereof, and a carrier disposed to hold said braking band in a braking position against a withdrawal rim of a storage body, said carrier mounting said braking band thereon in a non-fixed and loose manner to allow said braking band to freely float relative to said carrier and the withdrawal rim and so that said braking band is both circumferentially movable along the withdrawal rim relative to said carrier and movable in a direction parallel to the generatrix, said carrier including a plurality of radially inwardly extending and circumferentially-spaced resilient arms which terminate in respective inner free ends which engage said braking band.