Patent GB-191128894-A (GB)
Title: Improvements in the Method of and Means for Effecting Replenishment of Weft in Change Box Looms.
Inventor: AINLEY JOHN SHAW
IPC: D03D45/20
Filed: 1911-12-22
Granted: 1912-12-23
Abstract: 28,894. Ainley, J. S. Dec. 22. Weft-replenishing mechanism.-Weft - replenishment is effected by picking the substantially-exhausted or spent shuttle 6, Figs. 1 3, and 4, into an auxiliary shuttle box 3, moving this box into an inoperative position above drop-boxes 2, 2<1>, uniting the weft end from the spent shuttle to the thread from a supply spool 9, and then rotating the spent shuttle peg or spindle, provided with a gear 8 for this purpose, so as to wind a fresh supply of weft thereon before the shuttle is again brought into use. The loom may have supply bobbins 9, auxiliary boxes 3, and weft-feeler motions at each side, the feeler motions operating alternately and a fresh supply of weft being wound first on one and then on the other side of the loom. Normally, the boxes 3 and drop-boxes 2, 2<1> remain in the positions shown in Fig. 8, but, when the feeler mechanism, say at the right-hand side, is operated, the usual rock-shaft causes an indicator chain controlling the boxes 2, 2', 3 and the winding-mechanism to be driven from the head-motion driving- mechanism. The boxes 2, 2<1> and the right-hand box 3 are then operated in such a manner that a freshly-wound shuttle is picked from the right-hand box 3 into action and the spent shuttle is afterwards received therein, the box being then raised into its winding position, whereupon the gear-wheel 8, Figs. 1, 3, and 4, of the shuttle peg &c. is moved into gear with a spur-wheel 4. The indicator chain afterwards causes a clutch i on a constantly-rotating shaft a to be geared to a pulley b that drives a pulley d on a shaft e geared to a traversing - screw shaft n, the weaver having meanwhile united the weft ends from the supply spool and spent shuttle. The shaft n is thus rotated and a thread-guide block 5 is moved from the position shown in full lines to the starting position 5<a>, a pivoted member p<1> thereof wiping over a fixed cam q and being thereby moved from a position where it engages the thread to a position where the thread is held between a fixed member p and the member p<1>. The block 5 then engages a movable stop and causes the clutch i to be geared to a second pulley f, whereby the shaft n is driven in the reverse direction, whilst it is also reciprocated bv a heart cam r. At the same time, a driving-belt s<1> is moved from a loose pulley t to a fast pulley u, the spindle &c. 7 being thus rotated and the thread wound thereon in the required chases. When the block reaches the position 5<b>, it causes the winding to be stopped, whilst, when it reaches the position shown in full lines, it causes the clutch to be moved to an intermediate inoperative position, and also causes the release of the feeler mechanism at the same side of the loom. The shuttle is then ready for use when next the feeler mechanism at the same side of the loom is operated. Two winding-boxes at the same side of the loom may be used, and two shuttles may be simultaneously wound, two active shuttles being used. The boxes 3 may be operated by being automatically locked at the required times to the boxes 2, 2<1> instead of being independently operated. According to the Provisional Specification, the auxiliary boxes may move constantly with the ordinary boxes, and also the thread ends from the supply spool and spent shuttle may be united by a knot-tying device.