Patent GB-190718070-A (GB)
Title: Improvements in or relating to the Shedding Devices of Looms for Weaving.
Inventor: BEAUMONT ROBERTS
Filed: 1908-03-09
Granted: 1908-10-29
Abstract: 18,070. Beaumont, R., and Hollis, T. March 9, 1908. Loom shedding-motions; shedding-levers; healds.- The shedding is effected by Woodcroft or sectional tappets which operate levers z, Fig. 1, rigidly and adjustably connected to either the top or the bottom shafts b, b<1> of the healds. These shafts may be rigidly connected by uprights c, c', which slide in recesses in a guide-piece d connected to pendent brackets e, or they may be mounted in rigid frames. The rigid connexions from the tappet levers z include rods u having right and left handed adjusting-screws x, adjustable pieces r, double-armed levers m, links o, o' having bosses for right and left handed adjusting-screws p, p', double-armed levers f, f<1>, bars i, i<1>, loops &c. j, h, n, and lugs h<1>, n<1> or screws. The rods u have spherical ends t, Fig. 13, fitting in recesses in the projections s of the pieces r, thus providing universal join.s. A cap v envelopes the sphere t and projection s, to which it is secured by a pin w. To keep the levers z in contact with the peripheries of the ordinary tappets, the levers are provided with bands 36, Fig. 1, which pass round pulleys 28 provided with steel or other bands 30 passing under and partly round pulleys 29 on a lever 32 pivoted on a rod 33. This rod passes through a bracket 34, and is provided with a coiled spring 35. Or the Woodcroft tappet may be made positive, the segments 7, Fig. 8, being enlarged and the outer projection 9 being made continuous so as to give a positive control to its lever z, which is provided with a bowl working in the cam path 10. In order to facilitate the positioning of the levers z and their bowls, one section of each tappet is provided with an opening through which a bowl may be introduced, and it is closed by a piece 19 having two recesses 20, 21, to enable it to be put into position from the inside of the cam path and to be forced outwards under the nuts of the bolts 22, 23, until its outer portion is in contact with the projections 24, 25 on the segment 7. The piece 19 is then retained in position by these bolts. The segments are retained in position as usual by projections 11, 12 on the plate 6, engaged by circular disks, and also by bolts passing through the holes 13. The levers m, f, f<1> may be arranged below the shafts a, b..In a further modification, the faces of the tappets are parallel to the front of the loom, and the levers m, Fig. 5, are directly operated by the tappets and may have spacing-pieces m<4>. The tappet-shaft 3 is driven through bevel and spur gearing, a special bracket 41 being provided. In a further modification, the levers f, f are linked together and one of the bars o, o<1> is dispensed with. In a modified form of guiding-frame 51, Fig. 40, fixed to the frame of the loom, recessed tilting plates 53 guide the stays 55, Fig. 43, which connect the shafts b, b<1>. The stays have enlarged parts or loops 57 for receiving the ends of the shafts b, b<1>, and pins 56 which fit in recessed parts thereof. Or the shaft after being passed through similar loops may be secured by a screw and nipple therein. One or both ends of the stay may be bifurcated. Hoops and eyes for connecting the shafts b, b<1> to the bars i, i<1> are shown in Fig. 47.