Patent GB-336724-A (GB)
Title: Improvements relating to dyeing machines for automatic fabric return
IPC: D06B3/32
Filed: 1929-08-26
Abstract: 336,724. Obermeyer, O. Aug. 26, 1929. Operating clutches.-A width dyeing machine with an automatic fabric reversing gear and a setting device for suitably limiting the number of passages of the fabric through the dyeing liquid, the fabric being led round a fabric spreader and beneath the lye, is provided with a controlling shaft 39 which effects reversal of the rising rollers and simultaneously tensions a braking device 42, 43, 44 for each tension roller alternately so that the unwinding roller is braked. The rising rollers 1, carried by spindles 2, are driven by frictional contact with tension rollers 3, driven alternately by bevels 6, 7 and a clutch device 11, 12 mounted on a shaft 8 carrying a clutch 8<a> and fast and loose pulleys 9, 10. The upper portion 14 of the clutch sleeve 12 is formed roofshape, so that a spring-pressed member 15, with a flat bottom 15<a>, will hasten the engagement with either side by lateral pressure. When a rising roller is almost unwound, the end of the spindle 2 bears on a lever train 16, 19 and raises a spring-pressed hooked member 20, which in turn depresses the rod 25 against spring action 26 to move the quadrant 27 downwardly. A pin 28 is thereby released and the clutch member 29 is moved by spring action 37 into engagement with the member 30 driven by the system 31, 34. The worm 36 thus rotates the wheel 38 attached to the controlling shaft 39. A wheel 45 with cam faces 46 is carried by the shaft 39 and is set so that immediately on rotation of the shaft the member 20 is released against the spring 48, so that the quadrant 27 is again brought into the path of the pin 28. After the clutch 29 has therefore made rotation through 270‹, the pin 28 begins to bear on the quadrant 27 and gradually releases the clutch 29 from engagement with the driver 30. For each such part-revolution, the wheel 38, and therefore the shaft 39, is turned through 180‹, the clutch sleeve 12 being moved by a cam thereon into the respective extreme position, and a brake disc 42, 43 moves the braking device 43<a>, 44 to brake the unwinding roller. A similar set of motions obtain when the other rising roller is almost unwound, the end of its spindle bearing on a lever train preferably so connected to the other that the rest of the apparatus is not duplicated. The front end of the shaft 39 is reduced and carries a hollow shaft 53 upon which is feathered a spring- pressed hand wheel 64 engaging by a lug 63 with the end of the hollow shaft. Keyed to the shaft 53 is the first member 54 of a wheel train which, when the shaft 39, and therefore also the shaft 53, has rotated through 180‹, will move a looselymounted bush 58, carrying a graduated disc 59 fixed rigidly thereto, through one division of the setting device; the latter consists of a loose disc 60 provided with a number of holes 61 equal in number to the graduations of disc 59 and carrying a pin 62 which can be used to couple the two discs together. The disc 60 is provided with a recess in its periphery into which the nose of a spring-pressed lever 67 is adapted to engage and in doing so retracts the lever 68 so that the lever 69, under the influence of the spring 70, will release the clutch 8a and stop the machine. A hand disengaging mechanism 72 may be provided ; or alternatively a single driving pulley may be used with a combined spring-pressed and hand operated lever for manipulating the clutch 8<a>.