Patent GB-190805767-A (GB)
Title: Improvements in or relating to Tension Mechanism for Winding Machines.
Inventor: WARDWELL SIMON WILLARD
Filed: 1908-03-14
Granted: 1909-03-15
Abstract: 5767. Wardwell, S. W. March 14. Winding-machines ; tension arrangements; stopmotions; traverse mechanism; pressing- arrangements ; stop-apparatus, non-automatic. - Tension mechanism for winding-machines for taper-nosed cops and the like is provided with an auxiliary tension device which augments the tension as the winding proceeds from the base to the tapered end of the nose of the cop and vice versa, and is combined with a broken-end and a measuring stop motion and a non-automatic stop apparatus. The yarn y, Figs. 1 and 2, passes through an ordinary gridiron tension device B, and, after being threaded under the loops 25, 26 of the broken-end stop motion and over the loop 32 of the tensionaugmenting devices, passes to the thread-guide o. The broken-end stop motion has a detector wire 23 mounted on a pin 19, Fig. 3, and having an arm 21 with an inclined end 22 adapted, when the thread breaks and the detector wire falls, to raise the stopping-lever 9, hinged on a lever 6, into a position where it is engaged by projections on a collar 11 rotating with the spindle b. This movement releases a detent so that the spring-pressed rockshaft v is rotated to operate the clutch levers (not shown) and stop the rotation of the spindle. The tension-augmenting device has a wire lever 31 pivoted to the bracket C, and the yarn passes over the bent end 32 of the wire lever. The other end of the wire lever is formed as a loop 38 adapted to receive a stud 53, Fig. 7, preferably formed of a wire coil and having an extension 54 engaging with notches 55 on a second wire lever 43, pivoted on the pin 19 and having an extension 44 with a coiled wire thimble 49, Fig. 4, on its end engaging with the traverse rod d. The arrangement is such that, as the traverse bar reciprocates, the wire lever 31 oscillates towards and away from the loop in the detector wire so that the increasing triangular deflexion of the yarn and its consequent augmented tension coincide with the winding of the yarn from the base to the tapered end of the nose of the cop, and vice versa. The starting and stopping of the machine is controlled through the rock-shaft v which is manually operated to start the machine by a handle z, the rock-shaft extending through the frame of the machine and controlling the spindledriving clutch levers (not shown). The rock-shaft also has an arm 3 engaging a detent on the pivoted lever 6, carrying a counterbalance weight 8 at its lower end and the stopping-lever 9 at its upper end. The stopping-lever has an off-set part adapted to be engaged by projections on the collar 11, which rotates with the spindle. The stopping-lever 9 is limited in its downward movement by an arm 12 on a rock-shaft 13, which carries at its other end a second arm 14 adapted to be tilted by the threadguide holder m when this holder reaches the end of its progressive mevement along the screw-threaded traverse bar, that is, when the cop is completed. The arms 14, 12 are thus tilted and the stopping- lever engages with the collar on the spindle and stops it ; the detent arm 3 is simultaneously released and the spindle-driving clutch levers are operated as before. The traverse bar d is reciprocated from an arm h on a rock-shaft i through an adjustable connecting-link j as described in Specification No. 5765, A.D. 1908. To prevent chattering due to the rapid reciprocation and oscillation of the thread-guide, a bearirg bar p presses by its weight on the thread-guide through an intermediate wire bail s, as described in Specification No. 3082, A.D. 1909.