Apparatus for and method of stopping fiber-material feed
AssigneeRieter Machine Works, Ltd.
InventorWerner Oeggerli
Life of this patent
Estimating the term…
Abstract
In the event of a yarn breakage the pressing roll of the inlet roll pair of a drafting arrangement is raised by a slubbing guide element from the inlet drafting roll or cylinder while simultaneously forming a clamping location for the slubbing or other fiber material.
Claims7
An apparatus for stopping fiber-material feed to a pair of rolls having a first driveable roll and a second roll engaging the fiber material therebetween and defining a nip line, said second roll having an outer surface and being driveable by contact of said outer surface with said first driveable roll, said apparatus comprising:
- clamping means for defining a fiber-material clamping location with said outer surface of said second roll;
- said clamping means having a stand-by position and an operative position;
- said operative position defining a fiber-material retaining position;
- means for moving said clamping means approximately radially with respect to said second roll between said stand-by position and said fiber-material retaining position;
- said clamping means comprising a fiber-material guide element having at least one edge portion;
- said fiber-material guide element serving to guide the fiber material into the nip line of said pair of rolls;
- means for mounting said fiber-material guide element for pivotable movement between said stand-by position and said fiber-material retaining position;
- and
- said fiber-material guide element comprising a fiber-material condenser having a converging guide passage.
A method of stopping fiber-material feed to a pair of rolls, comprising the steps of:
- guiding the fiber material by means of a guide element in order to convey the fiber material into a nip line of the pair of rolls;
- controllably moving the guide element toward a predetermined clamping location on the outer surface of one roll of the pair of rolls;
- and
- clamping the fiber material at the predetermined clamping location by means of the moving guide element and thus inhibiting further movement of the fiber material.
Dependencies are inferred from the claim text.