Patent GB-109454-A (GB)
IPC: D03J1/14
Abstract: 109,454. Fleming, H., and Ward, F. Sept. 18, 1916. Healds and reeds, threading.-A device for selecting ends for the drawing-in of weaving warps comprises in combination a needle adapted to select an end, a moving positioning-finger receiving the end, and a toothed wheel rotating step by step in synchronism with the movements of the needle and finger and taking up the end in one of its notches, so that successive ends are held in spaced notches in its periphery. The invention is described as applied to the combined selecting and denting machine described in Specification 108,648 and comprising a frame 2, Fig. 1, carrying the warp beam 1, stiff and loose clamps 3, 4 for the warp ends, the healds 7, reed 10, and an automatically traversed reed hook 9 mounted on a slide 11 to move along a bar 12 carried by brackets 13 on a bar 14, which is reciprocated vertically by a roller 16 on its forked end engaging a curved slot in a lever 17 keyed to a shaft 18 and rocked by arms 19 and a hand or foot rail 20 and by a counterweight 21. As the bar 14 is reciprocated, a tappet 22 thereon reciprocates a spring-controlled plunger 23 and with it a transverse bar 24 extending across the frame and engaged by a fork 25 with a pin 31, which extends through a slot 30, Fig. 3, in the base-plate 35 of a carriage 6 having wheels 56 running on rails 5 extending across the frame 2. The plate 35 carries the selecting and separating mechanism, which comprises a selecting-needle 43, Fig. 4, mounted in one arm 42 of a bell-crank lever pivoted at 39 to an extension 38 of a lever 37 and acted upon by a spring so that its other arm 40 is always in contact with a pin 41. The lever 37 is pivoted at 34 to the under side of the plate 35 and has a curved slot 36 engaged by the pin 31 of the fork 25. The needle 43 is thereby moved in the arc of a circle to engage a warp end lying against the edge 144 of the plate and carry it towards a curved edge 145, where it is engaged by a finger 33, also pivoted at 34, but above the plate, and having a cam slot 32 engaged by the pin 31, so that the finger is moved in the arc of a circle overlapping the path of the needle 43 and carries the end over the edge 145 and into a notch 50 of a toothed wheel 48 pivoted at 49 under the plate. The wheel 48 is rotated tooth by tooth by a pawl 47 pivoted at 46 to an extension 45 of the lever 37 and connected by a spring 152 to a detent pawl 51. The carriage is traversed along the rails by a ratchet-wheel 54 fixed to the axle of one pair of wheels 56 and adapted to be actuated by a pawl 53 carried by a bent lever 52 pivoted at 80 to the top of the plate 35 and having an arm 81 moved by the pin 31 against the action of a spring 82. A feeler arm 59 having an adjustable counterweight 58 is pressed against the unselected warp ends, and, when a number of ends are lying against the arm, it is moved to cause a catch-arm 61 on its pivot pin 60 to engage the lever 52 and stop further movement of the carriage. A pair of wheels 62 engages the undersides of the rails and may be drawn down against spring action and turned through a right-angle to enable the carriage to be lifted off the rails. The arm 42 may be provided with a holder 66, Fig. 5, with needles 43<a>, 43<b>, 43<c> adapted to select warp ends of different counts, a spring 67 clamping the holder in its adjusted position. During a complete reciprocation of the bar 14, the tappet 22 effects the selection of two ends, and, to select a single or additional end, a pivoted tappet 26, operative when the bar is moving only in one direction, may be used. If the selecting-mechanism fails to select an end, an additional movement may be given to the bar 24, independent of the bar 14, by a bellcrank lever 27, a rod 28, and a foot pedal &c. 29. In using the machine, the operator passes a hook, for example of the kind described in Specification 100,871, through the heald eyes, takes one or more ends from the wheel 48, a preferably adjustable guard-plate 151 with stepped stops acting to position the hook correctlv to take the ends, and draws the ends through the heald eyes and causes them to be engaged by the notch 8 of the reed hook 9.