GB196489A - Improvements in winding machines for yarn or thread - Google Patents

Abstract

196,489. Barbour, W. T., and Bell, W. M. May 9, 1922. Winding-machines; stop-motions.-Relates to the stop-motion of a drum winding-machine which acts, on the breakage of an end or when the roll A<1> has attained a predetermined diameter, to lift the said roll clear of the driving- drum A<2>. The roll-carriage A mounted on a pivot a, has fixed thereto a ratchet segment a<1> formed with a brake-rim a<2> on which the shoe a<3> of a weighted brake-lever a<4> acts. A plain segment B, notched at b, is mounted loosely on the pivot a and is provided with a stud b<1> on which is pivoted a weighted pawl a<5> which gears with the ratchet segment a<1>. The stud b<1> carries the brake-lever a<4>. A stud a<7> projecting from the frame a<8> carries a catch b<2> which engages the notch b and holds the segment B in its working position. A lever C' with a yarn-guide c is held up by the passing yarn against the action of a spring c<1> which encircles a rod c<2> and is compressed between a nut c<3> and a fixed lug c', the lever C<1> and the rod c<2> being attached to a member c<5> pivoted on the stud a'. When the yarn breaks, the arm C' falls and strikes a lug b<3>, thereby knocking the catch b<2> out of the notch b and releasing the segment B, whereupon the weighted brake-lever a<4> causes the roll-carriage A to turn about its pivot a and raise the roll A<1> out of contact with the drum A<2>. As the roll A<1> grows, the carriage A is raised against the brake action on the rim a<2> and the teeth of the segment a' slip past the pawl a<5>. When the roll A<1> has attained a predetermined size, a screw a<9> carried by the segment a<1> engages a lug b<4> on the catch b<2> and releases the latter, whereupon the roll A<1> is raised off the drum A<2>. The machine is re-set by raising the lever C' until a projection c<6> engages an abutment a<10> on the pawl a' and disengages the latter from the segment a<1> allowing the roll A<1> to contact with the drum A<2>. Further upward movement moves the brake lever a' back and re-engages the catch b<2> in the notch b. In a modification, the lever C<1> when lifted raises a pivoted lever the free end of which disengages the pawl a<5> and permits the mechanism to be re-set. Specification 141,858 is referred to in the Provisional Specification.