Abstract: A stand including a square vessel in which the trunk of a Christmas tree is clamped and held, has a pair of clamping screws extending inward from its opposite corners, along a common diagonal axis. The inner ends of the clamping screws have narrowed necks over which fit slotted clamping angles, whose bottom ends are slotted upwardly to fit onto a diagonal rib in vertical registration with the clamping screw axis. As the screws are advanced inwardly the clamping angles are guided and stabilized by the rib, to maintain parallelism with the square corners of the vessel.

Abstract: A hunting knife blade rotates by a pivot bore at one end thereof about a lock sleeve fixed within one end of a knife handle. Notches around the periphery of the pivot bore align with a radial passage through the lock sleeve when the blade is fully opened or fully closed and a sliding member within the lock sleeve has a depression on its outer surface axially alignable with the radial passage through the lock sleeve. A lock ball, of greater diameter than the sleeve thickness, is engaged in the radial passage, normally extending radially outward into a notch in the blade to lock it from angular rotation, but when said depression is aligned with said radial bore, to be cammed radially inward as the blade starts to rotate, to permit it to move to and lock in the outer position.