Patent GB-190301152-A (GB)
Title: Improvements in or relating to Automatic Shuttle-changing Mechanism of Looms for Weaving
Inventor: HANSEN CHRISTIAN MARIUS
Filed: 1903-01-16
Granted: 1904-01-07
Abstract: 1152. Hansen, C. M., Muller, C. V., and Carlsson, J. C. B. Jan. 16. Loom shuttle-changing mechanism; stop-motions; shuttle boxes.-Relates to means for automatically changing the shuttle before exhaustion of weft, and for stopping the loom when the weft breaks. The lay l is carried by a lever k pivoted upon a spindle j, to which is also pivoted a lever i actuated by means of a spring and an eccentric plate h. This plate is rotated by means of a chain f and toothed wheels b, c, the wheel b having half as many teeth as the wheel c. The lever i is, by these means, rocked towards the lay at every second rotation of the driving-shaft. Upon the lever i is mounted a feeler comprising two rods 15 fitted within two cylinders 13 and normally pushed outwards by springs 14. Pins on the rods 15 slide within slots 16 formed in the cylinders, and the outer ends of the rods are pivoted to an insulating-plate 17. A contact-plate S is attached to the front wall of the shuttle box ; this plate can be adjusted by means of screws so as to be fixed parallel to the layer of weft whether on a cylindrical or a conical spool. When the weft is exhausted, pins strike the contact-plate S. Electromagnets u connected to a battery 19 are mounted on the breast beam, and their armature x is attached to a spring plate and carries a rod z, which is screwed to a projection on a guide-plate 20. This plate slides upon a clutchrod 3, which actuates a clutch 4, serving in a known manner to cause the shutde to be automatically changed. A bent rod 5 on the plate 20 carries a hooked rod 6 adapted to engage with the weft-fork hammer 10 when moved to the right with the plate 20. To the rod 3 is attached a weft-fork 8, which, on a breakage of weft, effects a backward movement of the rod 3 and guide-plate 20 in the usual way ; the plate 20 has, in addition to the usual notch 11, a shallower notch 12. The spring plate supporting the armature x tends to hold the armature away from the poles, and normally, therefore, the plate 20 will be pulled into a position with its notch 11. opposite to the clutch 4. If the weft breaks when the guide-plate is in this position, the clutch 4 will not be actuated during the backward motion of the plate 20. When, however, only a small amount of weft remains on the spool, the plate 20 is moved away from the magnets by the action of the feeler mechanism so as to bring the notch 12 opposite the clutch, and, when the parts are in this position, the clutch will be actuated during the backward stroke of the plate 20. A shuttle-box tongue m, in the back wall of the box, is actuated by a two-armed lever n, o connected to a spring p. A bow or arm q on the breast beam passes above the arm o when the lay moves to the right, and prevents the lever n, o from being rocked too far. The mechanism for stoppirg the loom is of the usual kind, and is controlled by means of a stopping and starting rod 27, which engages with a notch in a plate 23, from which the rod is disengaged by the plate 20.