Abstract: An apparatus for twisting and winding strand onto a rotating bobbin comprises a spindle located within an open top pot both mounted for coincident rotation about a common axis. A strand guide mounted on the wall of the pot guides strand from an external source to be twisted and wound onto the bobbin. During rotation of the bobbin and pot, the pot is axially reciprocated relative to the bobbin to layer the strand while strand tension is monitored by a transducer located in the strand supply path. Strand tension is controlled by controlling the differential between the speeds of rotation of the bobbin and pot in response to the output of the transducer and a reference, as taught in my U.S. Pat. No. 4,128,988.

Abstract: An apparatus for twisting and winding strand onto a rotating bobbin comprises a spindle and an open top pot both mounted for coincident rotation about a common axis. A lower portion of the spindle extends outside the pot and is journalled in a set of low friction bearings. The bobbin is provided with a pair of sleeve bearings so that the bobbin is rotatable about the spindle. On the inner wall of the pot, a strand hook is provided to guide strand material onto the rotating bobbin. During operation, a strand is continually supplied to the apparatus at a constant lineal rate as the spindle and pot are rotated by a first motor thereby imparting twist to the incoming strand. The strand hook is axially reciprocated to traverse the strand along the length of the bobbin so as to distribute the strand in successive layers thereon. A second motor, mounted inside the pot, rotates the bobbin relative to the pot for winding the strand.