Clamping ring system for securing skin to drum, has blocks with rotatable threaded bores for screws arranged around protruding part of ring

摘要

The threaded bores (8) inside the blocks (2) around the drum body (1) are individually rotatable. The holes (23) in the protruding part (22) of the ring (20) are in communication with the outer edge (24) of this protruding part via mouths (25). Clamping screws (30) are passed through the holes in the protruding part of the ring and into the threaded bores in the blocks distributed around the drum body circumference. The protruding part of the ring extends at right angles to the drum body central axis and the number of holes is equal to the number of blocks.