Winding – tensioning – or guiding – Bobbin or spool – Thread fastener or guide
Patent
1981-01-13
1983-02-01
Christian, Leonard D.
Winding, tensioning, or guiding
Bobbin or spool
Thread fastener or guide
242 18PW, B65H 7528
Patent
active
043711308
ABSTRACT:
In a yarn tube having a yarn-supporting surface, a yarn-receiving pickup groove formed in the surface and extending circumferentially at least partially around the tube. The groove, specifically configured to accommodate both right hand and left hand yarn pickup, has a constant varying width along the length thereof, and either two widest sections or a common widest section capable of allowing "dropping in" and orientation of the yarn from both the right and left. Constantly narrowing sections extend outward from the widest section or sections to a common narrowest section or point to insure proper snagging of the yarn, initially received within the wide section or sections, regardless of the direction of rotation of the tube or the thickness of the yarn. The entire groove is of constant depth with the constant varying width insuring an accommodation and proper gripping of the yarn over a wide denier range.
REFERENCES:
patent: 2262665 (1941-11-01), Cavanaugh
patent: 2793822 (1957-05-01), Consoletti
patent: 3103305 (1963-09-01), Heatherly
patent: 3326494 (1967-06-01), Hartley, Jr.
patent: 3451639 (1969-06-01), Atwood et al.
patent: 3625451 (1971-12-01), Anderson
patent: 3717291 (1973-02-01), Adams et al.
patent: 3767129 (1973-10-01), Sobel
patent: 3794260 (1974-02-01), Sowell
Christian Leonard D.
Sonoco Products & Company
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