Patent GB-190416997-A (GB)
Title: Improvements in Winding Machines for Yarn or Thread and the like.
Inventor: FOSTER GEORGE WILLMARTH
Filed: 1904-08-03
Granted: 1905-06-01
Abstract: 16,997. Foster, G. W. Aug. 3. Winding machines; stop - motions.- The yarn &c. drawn from cops on spindles 80, Figs. 1 and 2, passes through guides 78 and between a series of tension wires 70, 72, and is laid by reciprocating thread-guides 14 on to cop tubes 7 placed on cones carried by spindles 6 mounted on ball bearings in supports 8. The tubes and their spindles are driven by frictional contact with conical drums 4 on shafts 2 driven by an endless belt 3 and a fast and a loose pulley on the main shaft 1. The thread-guides 14 are reciprocated in slides 13, at an approximately uniform speed with a minimum dwell at each end, by links 17 from arms 16 on shafts 15, which are rocked by rods 19 from slotted blocks 22 pivoted to toothed discs 18 geared together and driven from a pinion on the shaft 1. The required motion is effected by the combined action of the discs 18 and crank-pins 24 engaging the slotted blocks and carried by shafts 25 revolving in the bearings of, and in the opposite direction to, the discs. To reduce shock, the discs, which act as balance-wheels, are geared together so that the thread-guides arrive at the ends of their travel at different times. The links 17 are adjustably connected to the levers 16 to regulate the travel of the guide, and the levers 16 may be adjusted round the shafts 15 to impart a greater speed to the guides 14 at the inner end of their travel, thereby avoiding bulging of the yarn at the apex and rolling or drawing in at the base ot the cop. The tension device consists of two wires 70, each bent backwards and forwards to form parallel fingers and secured respectively to the bars 71, 75. The limbs of one wire are set opposite those of the other, and the bar 75 is fixed to a rod 74, along which the bar 71 is pressed by a spring 76 to produce the required tension on the yarn passing between the wires. The bar 71 can be pressed back for the insertion of the yarn by applying the thumbs to wires 77. An adjustable stop limits the movement of the bar 71. Each spindle bearing 8 is formed with a lug 9 pivoted to an arm 10 extending from a bracket 34 freely mounted at one side of a fixed collar on a stud 12, and a bell-crank lever 37 is freely mounted on the stud at the other side of the collar, one arm being connected to the bracket 34 and the other carrying a pivoted slotted block 38 to receive a rack-bar 39, which is pivoted to a segment 40 fixed on a shaft 42. When the cone 7 is resting on the driving- cone 4, the segment 40 is retained in the position shown by a catch on a lever 47 engaging a lug on the segment. The lever is suspended from a pivot 48, and a bar 49 is pivoted to the lever and carries a rod 33. The yarn passes from the tension device to the thread-guide over a plate 30 and supports a pivoted bent drop wire 31, which, when the yarn breaks, descends, its other end then acting against the rod 33 to lift the bar 49 and bring a lug on it into the path of a projection carried by the shaft 2. The projection draws forward the bar 49 and tilts the lever 47 to release the segment 40, which is then rotated by a spring 43, fixed at one end and secured at the other to a loose clutch 44 engaging a fixed clutch on the shaft 42, to turn the shaft, draw the lever 37 forward, and thus lift the cop out of contact with the cone 4. When this occurs, a rod 56 on the clutch 44 lifts the wire 31 to permit piecing. A handle 54 on the shaft 42 is rotated to return the parts to operative position and re-charge the spring 43, a pin on the segment 40 acting to tilt the rack-bar 39 so that the block 38 can slide on it and allow the cop to descend on to the drive-roll. As the cop increases in diameter, the lever 37 is gradually turned to lift the bracket 34, and the block 38 slides over the ratchet teeth of the rack-bar 39. To retain the axis of the cop parallel with the axis of the driving-cone 4 as the cop increases in size, the back end of the spindle box 8 is connected by a link 63 having universal joints at each end to a fixed pin arranged eccentrically to the stud 12. A concave spring washer within a concave nut 66 on the screwed end of the stud 12 presses the bracket 34 against the fixed collar on the stud, a frictional resistance to the lifting of the cop as it increases being thus effected. This frictional resistance is gradually reduced as the cop increases by fitting a clip on the bracket to engage teeth round the nut 66, whereby the nut is unscrewed to reduce the pressure on the washer as the cop lifts. The delivery spindles 80 are connected to the frame by universal joints to facilitate setting them with their axes coincident with the path of the yarn.