Patent GB-190310142-A (GB)
Title: Improvements in and appertaining to Looms having Automatic Weft Replenishing Mechanisms.
Inventor: SMITH ALFRED
Filed: 1903-05-05
Granted: 1904-04-21
Abstract: 10,142. Smith, A., and Jackson, S. May 5. Loom weft-replenishing mechanism; stop-motions.-A sliding weft-detector 80, Fig. 13, is pressed forward by the weft 81 in the shuttle as the lay beats up, so that, through a slotted arm 85, a shaft 86 is rocked, and an arm 87 upon it is moved from under a projection on a pivoted catch 90, one end 89 of which is thus allowed to drop. When the weft is nearly exhausted, the arm 87 is not moved far enough, and a pin 94 on the other end of the catch 90 does not raise a ratchet 95, which is then caught by the weft hammer and forced out of its normal position. The ratchet 95 carries with it a lever, which forces the stopping- handle out of its notch, moves the belt from the fast pulley to the loose pulley, and stops the ordinary operation of the loom. At the same time, the lever acts through suitable mechanism to rock a shaft 126, Fig. 1, to change the cop or bobbin in the shuttle, or to change the shuttle. When the shaft 126 is rocked, it acts through suitable mechanism to cause a radial projection from a sleeve on a shaft E to be engaged in one of the notches 16 of an annular flange on a wheel driven by spur gearing from the loose pulley. On the sleeve on the shaft E are mounted four cams 6, 7, 8, 9, which successively come into operation. The cam 6 acts through levers to raise a rod 36, crosshead 37, and the movable front of the shuttle box. The cam 7 then acts through levers to raise a rod 44, so that a plate 49 on an arm 48, connected to the upper end of a bent lever 45, pushes the empty shuttle out of the box, so that it falls down guides. If by any cause the lever 45 is held, a spring 53 yields and prevents breakage. A runner on a lever 32 then enters a hollow part in the cam 8, so that, through a rod 55 and spring-controlled lever 56, a sector lever 54 is moved, and a shuttle-supporting plate 57 is withdrawn from under the shuttles in a receptacle 60. The lowest shuttle falls on to a plate 62, and when, by the action of the cam 8, the lever 54 is moved back, the plate 57 is returned, and the shuttle on the plate 62 is deposited within the shuttle box. The cam 9 then acts through clutch mechanism, so as to cause a shaft 65 to be rocked. A lever on the other end of this shaft is coupled to duplex levers having projections extending on either side of the stopping-handle, so that, when the shaft 65 is rocked, the belt is returned to the fast pulley, and the loom re-started. If, after the weft-detector mechanism has indicated a change of shuttle, the shuttle has failed to enter its box, a swell 74 will not be pressed, and a hook 75 will catch a projection 77 and hold up the rod 36. When this happens, the cam 9 will fail to rock the shaft 65, since the clutch mechanism will be made ineffective, and the loom will not be started. The rod 36 will also be held up if the lever 54 fails to place a new shuttle properly within the box. The loose end of weft thread is cut off by suitably-mounted scissors or cutting-jaws, which are actuated by a cam on the shaft E. The cam is allowed to operate only after a rocking motion of the shaft 65 has taken place.