Patent GB-282247-A (GB)
Title: Improvements in and relating to silk dressing machines
IPC: D01G19/10
Filed: 1927-03-19
Abstract: 282,247. Croad, A. K., (Champlain Silk Mills). March 19, 1927. Silk-dressing machines.-In a circular silkdressing machine means is provided to turn over the tufts automatically after one end has been carded and to secure the combed ends in the slides, the sticks being released and discharged. The fibre accumulated on the carding- drums is periodically stripped and formed into a fleece which may be rolled up. The tufts 101, Fig. 7, are wrapped round the sticks 59 and secured between the sliders 54. The drum comprises end discs 51, Figs. 4 and 7, connected by headers 53 against which the sliders are pressed by spring levers 65. The sliders carry projecting studs 56 which rest on the edges of the discs 51 and are held by rings 57. The levers 65 are pivoted to the discs 51 and carry a link 67 connected by a spring 68 to the disc and provided with a roller 69 engaging a cam 70. Another arm on the lever is connected by a spring 72 and a slotted link 73 to the link 67. As the roller rides over a low part of the cam it is engaged by a cam 75 to draw back the lever 65 and allow the sticks to be inserted in recesses 58 in the sliders. When the roller rides on to a high part of the cam, the lever 65 is pressed forward by the spring 72 and the sliders are clamped together. The machine is driven by a motor 80, Fig. 1, which drives the drum through a shaft 81, spiral gears 83, 84 a vertical shaft 82, spiral gears 86, 87, a shaft 85, and a worm driven cross shaft 88 carrying pinions 91 engaging internal gears 92 on the outside of the discs 51. The tufts are combed first on one side and then on the other by carding- drums 170, 171 and are then reversed. A member 106, Figs. 7 and 10, is depressed to engage between rollers 60 on the sliders to separate adjacent pairs. A turn-over member 130, Figs. 4 and 13, is then passed between the separted pairs and on its return draws up the combed end of the tuft which is clamped as the member 106 is withdrawn. A member 150, Fig. 7, is then inserted between the sliders forming the pair and the stick 59 is released and is removed by a member 156, the exposed ends being then combed by carding-drums 172, 173. The members 106, 130 are mounted in compound slides so as to be capable of both vertical movements and horizontal movements to follow the path of the sliders on the rotating drum. They are operated by cams 110, 116, 132, 133 on a central shaft 103 operated by worm gearing 104, 105 from the horizontal shaft 85. The members 150, 156 are operated by cams 152 on the shaft 103, the member 150 being pivotally mounted on a lever 151 and controlled by a spring, and the member 156 being controlled by a slotted link 158 and spring 159. The carding-drums 172, 173 are driven from the shaft 81 through a shaft 181 and cross shaft 184. The drum 172, Fig. 19, is driven through a belt 185 and a clutch on the shaft 187 of the drum, and the drum 173 through a crossed' belt 188. The fibre collected on the drum 173 is transferred to the drum 172 by a brush 190 driven by a chain 191 passing round a sprocket on the shaft 187. A brush 197 driven by its contact with the drum 172 presses the fibre on to the drum. The drum 172 is periodically stopped and its direction of rotation reversed to allow the fibre collected on it to be removed. At such times the brushes 190 and 197 are moved out of contact with the drums by a cam 199 on a shaft 201. The drum 173 rotates continuously. The reversal of the drum 172 is effected through a cam 210 on the shaft 201 and the clutch, and takes place when the drum is opposite one of the spaces 223 between the sets of sliders. The removal of the fibre from the drum 172 is effected bv a toothed' gripper 225, Fig. 39, mounted on sliding rack bars 228 moved forward at the appropriate time by a quadrant 234 operated by a rod 231. The rod 231 is slotted to embrace the shaft 187 and is operated by a cam 235 and by the cam 210 on the shaft 201 to move the rod when the drum 172 starts reversing. The gripper is moved forward and rotated to seize the fibres which bridge the gap 266 in the clothing of the drum 172 and is withdrawn to pull the lap between two aprons 226, 227. The gripper is then rotated to free the lap. The apron 226 is raised to allow the passage of the gripper and is then lowered. The aprons are intermittently rotated to draw off the lap and it may be discharged by them or it may be reinforced by a canvas strip 310 and formed into a roll 315. The canvas strip is passed round guide rollers 313, 314 near the apron 227 and is moved intermittently, the start being delayed until the end of the lap has been advanced sufficiently by the apron 227 to reach the end of the previous lap. A fluted roller 326 co-operates with the canvas strip 310 above the roller 314. The winding-roll 315 is driven through a friction clutch to allow the part to slip as the roll increases in diameter. To ensure the correct passage of the lap along the apron 227, the front edge of the lap is engaged by a pivoted member 350, which frees it from the gripper 225 and pushes it down between the aprons 227 and 351. The carding- drums 170, 171 are similarly arranged and are provided with similar driving-arrangements and' devices to remove and wind-up the lap of fibres collected on the drum 170.