US 3,991,546 A · Double-twist apparatus

Abstract

A double-twist apparatus has a support provided with a journal in which is rotatably received a sleeve having an eccentric bore in which is centered the shaft of a twist spindle. A whorl carried on the shaft is engageable with a flat belt and rotation of the eccentric spindle within the fixed journal can move the whorl into and out of engagement with the belt. A lever is provided on the sleeve for angular displacement of this sleeve and a spring normally urges the sleeve into a position corresponding to engagement of the whorl with the belt or disengagement of the two. In the case of the spring urging the sleeve into the engaged position a toggle linkage is provided to hold the device in this position. In the arrangement where it urges the whorl away from the belt a spring-loaded device operated by a thread-tension sensor downstream of the apparatus is provided to stop the device in case of thread rupture. A brake is provided on the spindle shaft to arrest it when it is swung out of engagement with the belt.

Claims20

Dependent claims

A filment-spinning apparatus comprising:

a support having a cylindrical bore defining a main axis,
a sleeve rotatable in said bore about said main axis and having an eccentric bore centered on an eccentric axis parallel to and offset from said main axis,
a spindle rotatable in said eccentric bore about said eccentric axis,
a belt continuously displaceable past said support,
a whorl on said spindle adjacent said belt,
means for displacing said sleeve angularly about said main axis between an operating position with said whorl engaging and driven by said belt and a rest position with said whorl spaced from and out of engagement with said belt, and
means on said spindle for supporting a yarn package thereon.

4 more elements

Dependencies are inferred from the claim text.

Double-twist apparatus

Life of this patent

Double-twist apparatus

Life of this patent

Abstract

Claims20