Bobby Lee Pitts

US Patent:

43846858, May 24, 1983

Filed:

Jul 22, 1981

Appl. No.:

6/285832

Inventors:

Bobby L. Pitts - Wellford SC

International Classification:

B65H 5454
B65H 7510

US Classification:

242 4621

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.