The claim refers to a jacquard mechanism for controlling the shed selection of warp yarns. It includes at least one selector body adapted for connection to a heald and mounted for movement between upper and lower shed positions, several elongate support members arranged side by side in a parallel relationship, the selector body being slidably mounted relative to the support members for longitudinal movement along them. At least one of these members is static and at least one other is mounted for longitudinal reciprocal movement. The selector body and support members include co-operable latch means operable between latch and unlatch positions to cause selective engagement between them. IPC D03C.