Patent GB-190124614-A (GB)
Title: Improvements in and relating to Automatic Controlling Mechanism for use in Replenishing Weft in Looms, or for use in Stopping Looms
Inventor: BAKER WILLIAM HENRY
Filed: 1901-12-03
Granted: 1902-04-24
Abstract: 24,614. Baker, W. H., and Kip, F. E. Dec. 3. Loom shuttle-changing mechanism; shuttles, changing bobbins in automatically; shuttle boxes; stopmotions; weft cutting.-The shuttles are supplied from a magazine 16, provided with a sliding spring- plate 20, which supports the shuttles, and is pushed back periodically by means of a swinging-arm 19<1>, so as to allow the shuttles to fall upon fingers 18, attached to the magazine. The shuttle box 21 is suspended from an oscillatory shaft 22, mounted upon the lay 3, which carries fingers 18', adapted to intermesh with the fingers 18 and form a guideway, during the transfer of a shuttle to the shuttle box by means of a pusher 19 secured to the arm 19'. This arm is actuated by a rod 26, having a slotted end which rides upon a stud 26", and carrying a pin 26<111> which engages with a cam 23 on a shaft 8. The shuttle box is oscillated by means of a rod 27, connected to a sliding-block 28, fitted upon a rod 29 and attached to a lever 30, having a stud 30<11>, engaging with a cam 24. The cams 23, 24 are rigidly connected, and are normally forced out of engagement with the pins 30", 26<111> by a spring. For the purpose of moving the cams into an operative position, an electrically-controlled apparatus is employed. This comprises an oscillatory shaft 40, which carries an arm 40", Fig. 5, resting upon the sliding-core of an electromagnet 41, included in a circuit 44, having iron contactpieces 43, which make contact with a metallic ring 47, on the shuttle tongue 46, when the weft is nearly exhausted. When the electromagnetic circuit has been closed, the pieces 43 are attracted by the ring 47, and as the lay recedes it draws the core from beneath the arm 40", and allows the shaft 40 to rotate. Upon the shaft 40 is an arm 40', which presses down a lever 39, mounted upon a sliding-carriage 38, and adapted to engage with the weft-fork hammer 9, or with any other suitable vibrating part of the loom. The carriage 38 strikes against an arm 37<11>, on a shaft, which carries an arm, whence a sliding motion is transmitted to the cams by means of a rod 36 and lever 34. In a modified form, the arm 39 carries an armature situated below an electromagnetic coil which forms part of an electric circuit which is closed when the weft is nearly exhausted. When the pusher 19 has been drawn towards the lay, it is temporarily locked by means of a spring hook 31, which engages with a projection or shoulder 32 on the block 28. Injury to the loom, owing to the shuttle accidentally failing to box properly, just before a change of shuttles should be made, may be prevented by curving the upper ends 4<1> of the lay-swords 4, and employing a yielding guide between the inner end of the shuttle box and the outer end of the reed. In a modified form of the apparatus, the shuttle box comprises a pivoted part which serves to eject an exhausted shuttle, and a verticallymovable part which is actuated so as to be moved out of the way of the shuttle during its discharge. Preferably, the shuttle box swings about a fixed bar, and is actuated by means of a horizontal rod travelling in angular slots formed in plates secured to the ends of the shuttle box. In a modification of this form, a swinging arm supported by the shaft 22, forms the rear wall of the temporary box for the full shuttle, until after the first pick. In another arrangement, the entire shuttle box is swung back to discharge the spent shuttle, and the full shuttle passes into a temporary shuttle box, connected to the shuttle-transferring arm. A double-edged cutting-blade, for severing the weft of the spent and full shuttles, as required, is mounted upon the lay, and actuated by means of the shuttle-transferring arm. The electromagnetic means for controlling the apparatus may also be employed for stopping the loom, and for controlling a bobbin or weft-case changing as well as shuttlechanging mechanism.