Textiles: knitting – Needle cooperating elements – Sinkers or web holders
Patent
1992-10-21
1993-09-14
Crowder, Clifford D.
Textiles: knitting
Needle cooperating elements
Sinkers or web holders
66 57, 66217, D04B 900, D04B 1534
Patent
active
052438392
ABSTRACT:
An improved sinker cam assembly for a circular knitting machine is disclosed which contains a series of cam segments attached to a stationary circular cam ring to form an endless undulating cam race. The assembly also includes a rotating sinker ring to which a plurality of sinkers are slidably attached for reciprocal movement as the sinker ring rotates relative to the cam ring. Each sinker conventionally contains a radially inwardly located, axially extending cam follower arm and a spaced apart, radially outwardly located, axially extending cam follower arm. The arms confine the cam surfaces of the cam race therebetween so that the cam surfaces control the reciprocal movements of the sinkers as the sinker ring rotates. The cam elements contain gaps between successive pairs thereof, which have gap openings on the two cam surfaces. The cam elements are constructed such that the outer and inner gap openings of each gap fall on distinctly separate radial lines extending from the axial center of the cam ring such that the outer arm of any one of the sinkers completely crosses an outer gap opening before the inner arm of that sinker encounters and crosses the inner gap opening of the corresponding gap. Banging and jolting of the sinkers as they each cross from one cam segment to the next is thus substantially eliminated.
REFERENCES:
patent: 3293887 (1966-12-01), Crawford
patent: 3331219 (1967-07-01), Brook
patent: 3413823 (1968-12-01), Beucus
patent: 4040276 (1977-08-01), Koegel
DiGiuseppe Joseph
DiGiuseppe Joseph E.
Calvert John J.
Crowder Clifford D.
Miller Jr. Maurice L.
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