GB1336440A - Travelling wave shedding looms - Google Patents

Abstract

1336440 Travelling wave shed looms A LINKA 15 Dec 1970 [17 Dec 1969] 59586/70 Heading D1E A travelling wave shedding mechanism comprises healds 6 at the ends of longitudinally slidable rods 3 whose other ends have butts 15 sliding in moving guide tracks 12, 13 which have branching sections 14, 38 with diverters 21 at the junction points of the branches, controlled to guide the butts 15 selectively into a selected branch of the track, to produce different weaves. The guide tracks are formed on members 9a, 9b which are curved, Fig. 3, and rotated about a vertical axis when the mechanism is used on a circular loom (Fig. 1, not shown), or which are straight and hinged together with a plurality of such members and driven in an endless chain, when the mechanism is used on a conventional straight loom Fig. 7. Three sets of guide tracks I, II and III are provided corresponding to three different lengths of rods 3. The rods 3 are arranged one above another in radial grooves 2 in a fixed bed 1 as described in Specification 1300464. The diverters 21 are arranged on rotatable shafts (24), Fig. 6 (not shown) projecting through the members 9a, 9b and having arms (25) acted upon by an element (27) on a fixed part of the loom to move the arm (25) and hence the diverter one way or the other as it passes by. The elements (27) are operated by solenoids connected to a pattern reading mechanism, through a controller (C) Fig. 5, not shown). A thread breakage detector may be connected to the controller so that, upon breakage of a thread being detected, all of the butts are diverted into a branch 38 of the guide track, so that all of the warps are held outside of the path of the shuttle and no shed is formed.