Process for compensating short-term fluctuations in thread tension during feeding of thread to winding machines and the like
AssigneeFMN Schuster & Co.
InventorPeter Hermanns
Life of this patent
Estimating the term…
Abstract
A method and apparatus is provided for compensating short duration thread tension fluctuations during feed of thread to a textile machine. The method includes blowing a jet of fluid medium along the thread in a direction opposite to the direction of travel of the thread from a delivery zone to a thread takeup zone. The blown jet of fluid medium produces a deflection of the thread from its straight path to form a storage or reserve of the thread from which thread may be taken during short-term fluctuations. The apparatus includes various forms of a blower mechanism and control means for providing the necessary storage or reserve of thread along its path of travel.
Claims5
A method of compensating for short term fluctuations in thread tension during feeding of a thread to a working station that demands a varying amount of thread length during operation, said method comprising:
- a. supplying thread to run freely along a straight path zone at a constant speed from a delivery zone,
- b. said straight path zone having a downstream end and an upstream end,
- c. blowing a first jet of fluid medium along the thread from the downstream end in a direction opposite to the direction of travel of the thread, and
- d. blowing a second jet of fluid medium along the thread from the upstream end toward said first jet,
- e. said blowing jets of fluid medium being effective to produce a reserve supply of thread within the straight path zone by causing a thread deflection away from the straight path.
A method of delivering thread to a thread package, comprising:
- a. supplying thread to run freely along a straight path zone at a constant speed from a delivery supply zone,
- b. said straight path zone having a downstream end and an upstream end,
- c. blowing a first jet of fluid medium along the thread from the downstream end in a direction opposite to the direction of travel of the thread, and
- d. blowing a second jet of fluid medium along the thread from the upstream end toward said first jet,
- e. said blowing jets of fluid medium being effective to produce a reserve supply of thread within the straight path zone by causing a thread deflection away from the straight path,
- f. reciprocating a thread guide device along the length of a reverse thread roller rotatably mounted adjacent the thread package, and
- g. directing the thread from the straight path zone through said thread guide device and onto the thread package.
Dependencies are inferred from the claim text.