Improvements in apparatus for holding bobbins, or other analogous bodies holding or formed of yarn or thread to be unwound in creels or other supports in machines for winding, or winding and also doubling, or twisting or otherwise operating upon or usingyarns or threads

摘要

386,087. Creel apparatus for spinning, winding, warping, or beaming machines, looms, &c. AMBLER, G. H., Chellow Grange, Bradford, Yorkshire, HOLT, H., Atlas Iron Works, Whitworth Road, Rochdale, and GREENWOOD, H., 25, Rawling Street, Ingrow, Keighley, Yorkshire. Nov. 20, 1931, Nos. 32176/31 and 26102/32. [Classes 120 (ii), 120 (iii), 142 (ii), and 142 (iv).] In creel apparatus wherein the yarn is unwound axially from bobbins x, Fig. 1, a support a for the pegs c2 is mounted so as to be movable up into a position for the application of bobbins to the pegs and down into the unwinding position by being oscillated about a stud g the axis of which passes through or approximately through a guide p through which the yarn being unwound is guided. The support a may be oscillated through members a2, r by a treadle b. The member c carrying the pegs c2 is rotatable on the support a and a catch d is pivoted on a bracket v so that when the support a is swung upwardly one arm c1 of the member c engages therwith and the member c is turned through 120‹ on the support a. A curved inclined guide rail e is provided to dislodge the used bobbin. The last wound end of one bobbin is joined to the first wound end of another over a guide finger y. A conveyer f for used bobbins may be provided. The support a is held in the unwinding position by a detent spring l. When a bobbin x is completely unwound the treadle b is depressed and the support a swung upwardly in a clockwise direction the arm c1 carrying the now emptied bobbin engaging the catch d and the holder c being thereby rotated through 120‹ the empty bobbin riding up along the rail e and being dislodged from the peg c2. A new bobbin is applied to the third peg c2, now brought to the front, and the ends led over the finger y. On releasing the treadle b the support a moves downwards into contact with the stop m, the holder c rocking the catch d about its pivot w. To minimize shock and to control the downward movement the support a may be mounted loosely on a shaft 4, Fig. 4, constantly revolving at a slow speed, a ratchet wheel 5 being secured thereto and adapted to be engaged by a pawl 6 on the rod r. During unwinding, or when the support a is raised, the ratchet wheel 5 slips past the pawl 6. When the support a moves downwardly the pawl 6 engages the wheel 5 and thus limits the speed of return to that of the shaft 4. Co-operating clutch members employing rollers or balls may be used alternatively. In a further modification, the support a is moved by a handle 10, Fig. 6, being locked in the unwinding or raised positions by the engagement of a spring detent 11 in notches 14, 15. The ratchet wheel and pawl 5, 6 may also be provided in this form of apparatus.