Apparatus for producing thread or yarn reserve windings on a bobbin tube
AssigneeRieter Machine Works, Ltd.
InventorsAndreas Schwander, Dieter Thalmann
Life of this patent
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Abstract
The invention concerns an apparatus for producing thread or yarn reserve windings on a rotating bobbin tube (2), with a lever (5) for transferring the thread to the thread catching zone at the face side of the bobbin tube, with a thread guide curve (17) for guiding the thread while the thread reserve windings are formed, and with a thread stop (15) for temporarily holding the thread on the thread guide curve (17) for producing the thread reserve windings.
Claims6
An apparatus for producing thread reserve windings on a bobbin tube placed on a rotating bobbin chuck, said apparatus comprising
- a pivotally mounted lever movable between a rest position and a set back position and having a thread guide for guiding a thread into a thread catching zone of the bobbin tube when in said rest position;
- a pivotally mounted thread stop offset from said thread guide towards a longitudinal center of the bobbin tube;
- a carrier element for carrying said thread stop with said lever during pivoting of said lever in a first direction away from said rest position towards said set back position;
- a first force means for pivoting said lever in a second direction opposite said first direction;
- a second force means for pivoting said thread stop in said second direction;
- a damping element for dampening pivoting of said thread stop in said second direction;
- and
- a thread guide curve in a plane parallel to the bobbin tube for receiving a thread thereon during pivoting of said lever in said second direction, said thread guide curve being downwardly curved in a direction towards the longitudinal center of the bobbin tube for guiding a thread thereon after catching in said catching zone.
An apparatus as set forth in clwaim 1 wherein said damping element comprises a first fixed part and a second part connected with said thread stop and moveable therewith, said first and second parts being coupled frictionally via a highly viscous liquid.
Dependencies are inferred from the claim text.