Abstract: The disclosure concerns a device for clamping two axially telescoping rods in a selected telescoped position, wherein the device includes a case supported at the end of the outside one of the two rods and the case encloses an annular bush wrapped around the inside one of the two rods. One side of the bush is open for defining an axial gap. Terminal flanges extend away from the bush at opposite sides of the gap. A shaft extends from the second of the terminal portions, through the first of the terminal portions and then outside the case. A two-position cam is journaled to the shaft and is shaped to engage the exterior of the case. As the cam is moved between its two positions, it selectively draws the terminal portion flanges together or permits them to move apart for selectively clamping or releasing the bush on the rod. A spring normally biases the terminal portion flanges apart.

Abstract: The disclosure concerns a tom-tom holder for supporting a pair of tom-toms on a stand. The holder has two arms which are pivotally attached to each other at an upright support rod. Each arm includes a hinge ball pressing part above and a hinge ball receiving part below, which parts are hinged together to pivot toward and away from each other for clamping a hinge ball between them. The hinge ball has an attached rod for holding a drum. The ball is clamped at a selected orientation through a cam mechanism comprising a rod extending from the ball pressing to the ball receiving element and being attached to the ball receiving element through a nut screwed onto the rod. A cam is attached to the rod at the ball pressing element. The cam is adjustable in its orientation for pressing upon the ball pressing element for drawing the rod and the attached ball receiving element into a hinge ball clamping position with respect to the ball pressing element.