Double-twist apparatus

Details Double-twist apparatus Double-twist apparatus

1975-11-07

1976-11-16

Petrakes, John

Textiles: spinning, twisting, and twining

Apparatus and processes

Stopping or starting

57 89, 57135, D01H 722, D01H 712, D01H 1316

Patent

active

039915468

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.

REFERENCES:
patent: 1471292 (1923-10-01), Sloat
patent: 2252037 (1941-08-01), Schaum
patent: 2786324 (1957-03-01), Keith et al.
patent: 3640144 (1972-02-01), Eckholt
patent: 3645084 (1972-02-01), Nimtz

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