Winding – tensioning – or guiding – Coil holder or support – Spool or core
Patent
1981-07-22
1983-05-24
Gilreath, Stanley N.
Winding, tensioning, or guiding
Coil holder or support
Spool or core
2421183, 24211832, B65H 5454, B65H 7510
Patent
active
043846858
ABSTRACT:
A one-piece, unitarily molded plastic bobbin for support of indefinite length strand material wound in package form thereon, comprising a tubular member having a generally cylindrical exterior surface for receipt of the strand material, and an opening and passageway therethrough for receipt of a rotatable drive spindle. One end portion of the bobbin contains an internal wall member for receiving an upper end portion of the spindle in driving engagement therewith. A major portion of the length of the interior passageway of the bobbin between the ends thereof having a transverse dimension sufficiently larger than the external transverse cross-sectional dimension of the drive spindle to permit radial contraction of the tubular member during the strand winding operation, and the lower open end portion of the bobbin passageway is of reduced transverse cross-sectional dimension with respect to the major portion of the length of the passageway so that the lower end of the bobbin closely surrounds and engages the drive spindle to facilitate stability and support of the bobbin on the spindle during the winding operation.
REFERENCES:
patent: 102587 (1870-05-01), Pearl
patent: 192493 (1877-06-01), Draper
patent: 2615650 (1952-10-01), Betner et al.
patent: 3167262 (1965-01-01), Adams et al.
patent: 3878997 (1975-04-01), Adams et al.
patent: 3958776 (1976-05-01), Torzo
Gilreath Stanley N.
Manning, Jr,. Wellington M.
Pitts Bobby L.
Wilburn, Jr. Luke J.
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