US PATENT SUBCLASS 57 / 72
.~.~ Bobbin lag or drag type

Current as of: June, 1999
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57 /   HD   TEXTILES: SPINNING, TWISTING, AND TWINING

1 R  DF  APPARATUS AND PROCESSES {45}
66  DF  .~ Receiving twist type {7}
72.~.~ Bobbin lag or drag type

DEFINITION

Classification: 57/72

(under subclass 66) Devices wherein the strand receiver is rotated by the pull of the material being twisted and wound. Usually some friction means is provided to retard and govern and rotation of the receiver.

(1) Note. Search also this class, subclass 70.