Patent GB-433292-A (GB)
Title: Improvements in slub catchers or clearers for yarns or threads
IPC: B65H63/06
Filed: 1933-11-08
Abstract: 433,292. Yarn clearers. AMBLER, G. H., Chellow Grange, Bradford, Yorkshire, and HOLT, H., Atlas Iron Works, Whitworth Road, Rochdale, Lancashire. Nov. 8, 1933, Nos. 31012/33, 34129/34, and 35402/34. [Class 120 (ii)] In a slub catcher or clearer having a device which, when moved by a slub or thick portion in the yarn, moves a clamping or severing device into contact with a table, bed or rest over which the yarn runs and presses or catches the yarn against the table, the devices are formed as two oscillatable parts mounted about the same centre line and adjustable in relation to a hollow in the table and formed integrally or secured together so that on the one part, which presents an edge close to but not touching the table, being moved by a slub, &c., the other is moved with the first part to present an edge portion or teeth to the table and catch or hold the slub &c. there-against. The hollow in the table is of circular curvature about approximately the centre-line of oscillation of the oscillatable parts. A resilient part may be secured to the oscillatable parts so as to yield to properly formed knots but being moved further by a slub &c. to move the other two oscillatable parts. As shown in Figs. 1 and 2, the part b is formed with a rolled part bl mounted on a stud d in one arm of a bifurcated holder i and has the other part c, formed with teeth c<1>, adjustably secured to it by a bolt b<4> and distance piece b<5>. The table a with the hollow a<1> is secured to the other arm of the holder and the arms are drawn together or allowed to spring apart to adjust the part b relatively to the table a by a screw j. The yarn is guided between the table a and part b by guides e, f and the guide f and a resilient stop h<1> limit the movements of the part b; the parts b, c may be turned against the influence of the stop h<1> into a position for cleaning. The part c may project through a slot b<3> in the part b and the bolt b<4> may adjustably engage a slot therein. The movements of the parts b, c may be limited by a pair of lugs on a gapped lever mounted on the stud d and controlled by a coiled spring and by rotating the lever against the influence of the spring the parts b, c may be moved into a position for cleaning. In the form shown in Figs. 5 and 6 the rolled part b<1> of the part b is mounted between collars q, r loose on the stud d, is controlled by a spring s and is limited in its movement against the action of the spring s by a stop o ; the guide fingers e, f are formed from a single piece of wire clamped in the holder i and the finger e normally shields the part c from contact with the yarn. In another form in which the movement of the parts b, c is limited by a pair of lugs on a gapped lever, a second lever, pivoted to the holder i, is formed with a lateral projection and finger piece so that it can be moved to bring the projection into the gap of the first lever and hold it while the parts are being adjusted to suit the yarn. In the form shown in Fig. 11, the part b is mounted on the stud d by ears b<7> and the stud extends eccentrically from a cylindrical part z<1> mounted in the holder i and held therein by a pad and bolt 3, so that, by rotating the stud in the holder, the parts b, c can be adjusted relatively to the table a ; the movement of the parts b, c are limited by a saddle plate 6 secured to the holder i. In another form the parts b, c are secured together by spot welding and the stud d is carried from a block slidably mounted in the holder i. In the form shown in Fig. 12, a resilient part 8 is secured to the parts b, c and has its edge disposed over the hollow of the table a and adjusted in relation to the parts b, c and table, so that properly formed knots in the yarn will move the part 8 slightly and not affect the parts b, c but a slub or imperfectly tied knot will move the part 8 to move the parts b, c and cause the yarn to be clamped or pressed against the table a ; the gapped lever m pivotally mounted on the stud d is provided with one lug m<2> and a peg 10 for limiting the movement of the parts ; the peg 10 may be fitted into either of a pair of holes 9 and when fitted into the hole nearer the lug m<2> the parts b, c act as in the other forms and the part 8 is put out of action. The stud d on which the parts 8, b, c are mounted may be adjustable and a saddle plate may be used to limit the movements of the parts instead of the lever m. The table a may be formed with an incline a<2> extending away from the hollow a<1> in a direction opposite to that of the passage of the yarn.