Patent GB-1085011-A (GB)
Title: Improvements in or relating to twisting frames
IPC: D01H1/36
Filed: 1964-09-18
Abstract: 1,085,011. Control of several motors. MAREMONT CORPORATION. Sept. 18, 1964 [Sept. 19, 1963], No. 38153/64. Heading H2J. [Also in Divisions D1 and D2] Joggling-mechanism is provided in a spinning frame which is operative at the start of a wind to joggle parts of the frame (e.g. a ring-rail) so as to reduce the chance of threads breaking. Tapes 36, 46, 52, Fig. 1, with extensions trained over pulleys and supporting rails for the rings, thread-guides and balloon rectrictors are arranged on each side of the frame. The tapes are secured to pulleys 40, 50, 52 on a shaft 44 and the downward pull they exert on the shaft is slightly overbalanced by the effect of a torsionbar 108 as described in Specification 1,005,013. The shaft 44 is rocked to provide the traverse and advanced step-by-step for the gain by a pulley 90 operated as described in Specification 1,005,012. The means for winding-down the rails for doffing described in this Specification is replaced by the following arrangement. A drum 132 is loosely mounted on shaft 44 and can drive the shaft through a lost-motion device, Fig. 9 (not shown). The tapes are so arranged over pulleys that when the shaft 44 is rotated by the drum 132 they are pulled against the effect of the bar 108 to lower the rails. The drum 132 is rotated by a belt 128 connected at one end to drum 132 and at the other to a pulley 126, and trained around a pulley 130. When pulley 126 is rotated to wind up the belt off drum 132 the latter is rotated to lower the rails and to wind up a spring 134. For rotating the pulley, a motor 153 is connected to a shaft 166 by chain and sprockets; when a wind-down clutch is energized the shaft 166 becomes geared to the shaft of pulley 126. The joggling mechanism comprises the pulley 130 which is rotated bodily by being eccentrically mounted on a shaft 124 alternately to tighten and slacken the belt 128 and so rock pulley 132. Shaft 124 is also driven from motor 153, through a shaft 148, which when a joggleclutch is energized, becomes geared to shaft 124. Lifting the thread guides and further lowering of the balloon-ring rails.-The thread-guides, e.g. 34, Fig. 10, are secured to a rockable shaft 32 on each side of the frame. These are slidably mounted in members 188 which can rotate about adjustably mounted rods 187 through linkages 184, 178, and 182, 180 as a shaft 174 is rocked through 180 degrees at a time by a reversible motor 196. This is controlled by a plunger 200 acted upon by limit cams, e.g. 202. The shaft 32 carries an arm 224 connected by a tape 218 to a frame carrying rollers over which the tapes 52 of the balloon-guide rails are trained; when the arm 32 is rocked the tape is pulled to move the frame against the action of a spring (Fig. 12, not shown), to move the rollers so that the tapes 52 are slackened to lower the rails beyond the position to which they have been lowered by the wind-down device. Operation of the frame.-When the bobLins are filled, shaft 44 has rotated sufficiently for cam 234 to close contact ILS, line 26, Fig. 12. Relay ICR is connected closing contacts at lines 7-9 to operate wind-down motor 153. Contacts ICR, line 28, and line 52, Fig. 13, are also closed, and when a cam 236 on the main reciprocating cam 72 actuates switch 2LS, line 28, relay ITD is connected to close contact ITD, line 25, to energize clutch 150 to cause pulley 126 to rotate. Tape 128 thus rotates shaft 44 through the lost-motion device to pay out the lifter tapes and lower the rails to doffing position. This allows the pick-motion 86 to reset the builder-motion parts. When the rails reach their lowest point, contact ITD. line 23, which is normally closed, opens to allow relay IM to operate contacts at lines 1-3 to de-energize the main motor. Cam 238 on shaft 144 engages contact 3LS, line 30, to energize relay 2TD; (a) contacts at line 27 are opened to de-energize relay ICR to disconnect contacts for the wind-down motor 153; (b) contacts at line 36 are closed to energize relay 2CR to establish a circuit to drive wind-down motor 153 in reverse so that the ring-rail is raised 1<SP>5</SP>/ 8  inch above its low point to starting-position. At this point cam 240 on shaft 44 actuates switch 4LS, line 35, to disconnect relay 2CR so that wind-down motor is stopped; relay 3CR is energized, so that the thread-guide motor 196 is started to raise the thread-guides and further lower the balloon-guide rails. The limit cam on shaft 174 actuates plunger 200 to actuate LS5 and stop the motor 196. The spindles are now doffed automatically or by hand, the operation closing switches 6LS, 7LS (lines 39, 43) to energize relays 7CR, 8CR and close contacts 7CR, 8CR, line 44, to energize relay 4CR, whereby contacts are closed, lines 45, 46, to drive motor 196 in reverse to lower the thread guides and raise the balloonrings until plunger 200 actuates switch 5LS. Relay 6CR is thus connected; contact 6CR, line 44, is opened to disconnect relay 4CR and cut out motor 196; contact 6CR, line 25, is closed to energize relay IM and start the mainmotor 230, and contact 6CR, line 54, is closed to engage joggle-clutch 164. Relay 5CR previously engaged and contact 5CR closed, energize relay 2CR and close contacts 2CR in the wind-down motor circuit so that the jogglepulley 130 is rotated. After, e.g., four rotations of the pulley, a timing-cam associated therewith actuates switch 8LS, line 14, to de-energize relay 9CR disconnecting the 9CR contacts, line 54, to cut out the joggle-clutch, and connecting contacts 9CR, line 53, to energize the wind-down clutch 150. The tape 128 is paid off pulley 126, and drum 132 is urged by spring 134, taking up the tape and at the same time, the slack in the builder-mechanism chains to pulley 90, so that the rails are again under the control of the builder motion. When the tape 128 is fully paid off pulley 126, an associated timing-cam actuates switch 9LS, line 31, de-energizing clutch 150 and cutting out motor 153, the polarity of the circuit being reversed ready for the next winding down of the ring-rails.