Textiles: fiber preparation – Working – Carding
Patent
1991-10-23
1993-07-27
Crowder, Clifford D.
Textiles: fiber preparation
Working
Carding
19114, 492 48, 492 22, D01G 1514
Patent
active
052301249
DESCRIPTION:
BRIEF SUMMARY
This invention relates to card clothing for application to a carrier cylinder or roll e.g. a doffer roll which forms part of a high pile fabric knitting machine.
High pile fabric knitting machines usually comprise rotary knitting machines provided with a plurality of carding heads, constituting fibre transfer and feeding units, for supplying carded sliver fibres to the knitting needle. Usually, the knitting needles are mounted independently in a cylinder, which is rotatable relative to the several carding heads disposed at circumferentially spaced locations around the cylinder.
The carding heads for feeding carded sliver fibres to the needles of high pile fabric knitting machines are constituted of at least one pair of rotatable sliver feed rolls--usually having either wire-covered or fluted peripheries--a rotatable wire-covered main cylinder and a rotatable wire-covered doffer. The sliver feed rolls draw sliver in rope form from a source of supply, and deliver the fibres, in sheet form, to the main cylinder. The latter, acting as a transfer medium, conveys the sheet of sliver fibres to the doffer which, in turn, feeds the fibres to the needles of the knitting machine. In order to properly transfer the fibres during their delivery to the needles, the main cylinder is caused to rotate faster than the sliver feed rolls, and the doffer is caused to rotate faster than the main cylinder.
In clothing the doffer, it has been the practice for decades to wrap an elongated, narrow strip of wire-covered card clothing helically about the peripheral surface of the doffer roll. Each end of the helically wound strip is secured to the rim of the doffer roll by fastening means, such as a threaded bolt passing through the rim and being secured thereto by a threaded nut. The helical wrapping of the doffer is time consuming and difficult. No matter how careful the winding, empty spaces or voids often occur in the card clothing because such defects usually are inherent in helical winding. Further, in the helical winding of the elongated strips of card clothing, the spirals often depart from a true helix, the result of which is to create undesirable lines or shadows in the high pile of the fabric being knit. Such lines or shadows are detrimental to the quality of the fabric.
The present invention has been developed with a view to provide an improved means for mounting on a carrier roll a single elongate piece of card clothing which is rectangular as seen in plan and which can be wrapped around the roll e.g. a doffer roll, so as to bring the ends of the piece into abutment with each other and thereby to form a substantially uniform distribution of wire covered clothing on the outer periphery of the roll.
According to one aspect of the invention there is provided an elongate piece of card clothing which is rectangular as seen in plan, and which is capable of being wrapped around a carrier roll having a slot in its outer periphery, said card clothing comprising:
an elongate strip of resilient material having opposed ends which are intended substantially to abut one another in the region of said slot in the carrier roll when the card clothing is wrapped around said carrier roll;
wire carding teeth carried by said strip of resilient material and projecting from one side thereof, so as to be able to form a substantially uniform distribution of carding teeth throughout the outer periphery of the carrier roll; and,
an elongate carrier web secured to said elongate strips of resilient material and having opposed ends which each project longitudinally beyond a respective end of the strip so as to form a gripping portion, whereby the two gripping portions can be taken inwardly through said slot in the carrier roll to be engaged by gripping means arranged internally of the carrier roll and operable to apply tension to the web thereby to secure the piece of card clothing in position on the outer periphery of the carrier roll.
Therefore, a piece of card clothing according to the invention can be readily applied to the outer periphery of a car
REFERENCES:
patent: 761470 (1904-05-01), Gessner
patent: 1084786 (1914-01-01), Calderwood
patent: 1731534 (1929-10-01), Karrer
patent: 2002079 (1935-05-01), Dickie
patent: 2437050 (1948-03-01), Schulz
patent: 2489791 (1949-11-01), Liles et al.
patent: 2775199 (1956-12-01), Claff et al.
patent: 3234694 (1966-02-01), Vosburg
patent: 3290729 (1966-12-01), Maynard
patent: 3947922 (1976-04-01), Ibbotson
patent: 4356598 (1982-11-01), Graf
patent: 4408371 (1983-10-01), Quay
patent: 4516292 (1985-05-01), Quay
patent: 4679390 (1987-07-01), Stewart
Crowder Clifford D.
Izaguirre Ismael
James Holdsworth & Brothers Limited
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