Patent GB-190804930-A (GB)
Title: Improvements in or relating to Shuttle-exchanging Devices for Looms.
Inventor: WAECHTLER FRANZ LOUIS
Filed: 1908-03-04
Granted: 1908-11-19
Abstract: 4930. Wõchtler, F. L. March 4. Loom shuttle-changing mechanism ; weft, cutting ; checking shuttles.-By means of an eccentric-rod 75, Fig. 12, a lever 76 carrying a pawl 78 is rocked and a ratchet-wheel 77 is rotated, a notched disk 87 being driven therefrom by spur gearing. When a projection 91 on a lever 88 drops into the notch on the disk, a rod 92 is raised, and a rod or wire 93, Fig. 2, connected to a bell-crank lever 95, which embraces a pin 96, is rocked so that the rod or wire 93 is removed from a stop 94 and a spring 97 depresses the pin 96. The pin then acts upon the cam-face of a hub 101, Fig. 14, of a disk 108 on a wheel 17, Figs. 16 and 14, provided with a long tooth and interdental spaces x and carried on a shaft 18, which is driven from the crank-shaft, and the wheel 17 is caused to slide along its shaft into gear with a wheel 16 on a shaft 14, Fig. 2, provided with a counter disk 107, the shaft 14, which is provided with grooved cams to operate various levers 12, 13, 26, 46, 56, being given a complete revolution. The pin 96 is then raised, so as to allow a spring 102 to return the wheel 16 from engagement with the wheel 17, by means of a pin 104 on the lever 46, which is embraced by a loop 105 on a rod 106 connected to the bell-crank lever 95. The rod 93 comes to rest behind the stop 94, and the disk 108 enters a recess in the disk 107. The shuttles 2 in the magazine are supported by holders, which are withdrawn when shuttle-changing is to occur by levers connected to a double-armed lever 4 on a shaft 7, which is rocked by means of a draw-bar 10 and the cam-operated lever 12. A shuttle is thus freed from the holders and fed to horizontal arms 19 on the horizontal part of a bow 21, which is raised and lowered in bearings 27 by the forked cam-operated lever 26. The arms 19 and the lowermost shuttle supported thereby are first lowered to the position shown in dotted lines, and the shuttle is pushed by the slide 22 and camoperated lever 46 into the open angles 25 on the arms 19. The arms 19 are then lowered still farther, Fig. 6, and the lay swings forwards, whereupon the upper cell 31 of the shuttle box completely surrounds the full shuttle, the arms 19 extending through openings in the back wall of the cell. Catches 32, 33, Fig. 9, are then moved towards each other to grasp the shuttle by lever mechanism and the cam-actuated lever 46 ; or instead of sliding grippers as shown, rocking grippers may be employed. The fresh shuttle then returns with the lay, and the plates 19 are returned to their normal positions. The shuttlebox lever is then lowered by lever mechanism operated from the cam-operated lever 56, so that the cell 31 is brought to a level with the race. The check or swell 58, pressed upon by a spring, is moved out of the cell somewhat by an arm 62, which is moved by cam-operated lever mechanism 64, 65, 68, 46 so as to engage the chamfered end 60 of the check 58. Another arm 63 limits the outward movement of the check. The exhausted shuttle is removed from the shuttle box on the backward swing of the lay by hook-shaped grippers 69, 70, secured to the loom front and formed into a tray 71, into which the shuttle is sent. The weft end is cut by a knife 110, Fig. 22, guided between steel rails and connected by a link 118 to a lever which has a roller moving in a slot and arranged on a projection on the shuttle box. When the shuttle box is lowered, a spring 114 raises the knife 110 and the weft is cut.