GB209108A - Improvement in or relating to looping machines for hosiery - Google Patents

Abstract

209,108. Victorius, M. L. Dec. 30, 1922, [Convention date]. Knitted-fabric sewing-machines. - A circular brush for a linking.machine is oscillated and at the same time intermittently fed forward so that the wear is evenly distributed and the brush is cleaned by a stationary comb. A brush 18 is mounted on a spindle 17 adjacent a friction disc b, adjustably spring-pressed against it. The disc is oscillated by a universally-jointed link 26 from a bell-crank 25, actuated from the machine drive. A sleeve c on the disc b contains a cam-surface g which coacts with a pin h on the stationary spindle 17 so that the brush is actuated for an equal portion of the oscillation of the disc b in each direction. In one direction, however, the brush is freed at the end of its motion so that owing to the presence of a comb 35, the resilience of the bristles will give a slight reverse movement to the brush which is impossible during the opposite movement. The brush is thus fed slightly forward during each oscillation. The bell-crank 25 also actuates the shears. In a modification, the bell-crank 25 is universally connected to one half of a spring-pressed ratchet-clutch, the other half of which is mounted on one side of the brush 18, Fig. 4. On the other side of the brush is fixed a ratchet, wheel 19 which gears with a wheel 34 mounted on a weighted lever 30. Owing to the coaction of a pin 36 on the wheel 34 with the lever 30 and an adjustable stop 37, the wheel 34 can only move during part of the movement of the bell-crank 25 in each direction. This results in relative movement of the clutch parts during clockwise motion and slip between the wheels 19, 34 during the reverse motion, so that the, brush is given the requisite motion. In a further modification, the driving ratchet-clutch part 43, Fig. 7, coacts with teeth 41 on a disc 40 fixed to the brush while peripheral teeth 42 on the disc engage a pivoted ratchet pawl 47, the motion of which in a clockwise direction is limited by a pin 50 and an adjustable stop 49 and in the reverse direction by a spring 48 for the same purpose as above. The clutch-member 43 has two crank pins of different throw, while the crank pin in any of the constructions may be adjustable to vary the throw.