Abstract: In a loop holding mechanism (31), loop engaging pins (39) which are carried by pin blocks (38) are arranged successively to engage at a feed end (310) of the mechanism loop portions of yarns formed at opposite side edges of a multi-axial yarn structure being formed. The pin blocks (38) at each side of the mechanism (31) advance in abutting relationship along an advancement track (32) to a delivery end (311) of the mechanism (31) where they are returned along a return track (34) and again engaged in the successively formed loop portions.

Abstract: A device for forming from warp sheet a bias yarn assembly comprising two superposed bias yarn sub-assemblies in which the bias yarns of one sub-assembly are inclined to the bias yarns of the other sub-assembly and in both of which the bias yarns are inclined to the warp feed direction includes a yarn transfer mechanism having a lower yarn guide member with upstanding yarn guide elements which extend through the thickness of the warp sheet and define warp yarn guide openings through which the warp yarns of the warp sheet pass and which hold the warp yarns in positions spaced apart in the weft direction and an upper yarn transfer member which includes yarn guide elements which extend downwardly and which define transfer openings for the reception of yarns of the warp sheet from the yard guide openings for transfer to the other yarn guide openings.