P. Conjugate/matched cams: Used in the rapier loom for sley motion — matches with 3. Q. Worm and worm wheel: Provide continuous positive take-up motion — matches with 2. R. Friction clutch device: Drives the cloth roller with slip to avoid breakage — matches with 1. S. Lease rod: Separates the warp sheet for proper shed formation — matches with 4.