the invention relates to a device for a yarn cable track including longitudinal warp yarns and transverse weft yarns , that includes a base with a mounting surface on the cable track as well as an attachment means . the device further includes : at least one trough - shaped longitudinal housing for receiving a first yarn of the cable track and formed in the mounting surface ; at least one bearing surface made as an undercut relative to the mounting surface , said surface extending perpendicularly to the longitudinal housing and parallel to the bottom of the longitudinal housing at an intermediate level between the bottom of said housing and the mounting surface ; and at least one transverse cut - out corresponding to each intersection between a longitudinal housing and a bearing surface , said cut - out extending from one edge of the mounting surface to a longitudinal housing .