Abstract: A shoring device that utilizes an accessory assembly mounted to a vertical tubular member of a tubular scaffold assembly to receive a shoring member therethrough. With an adjustable threaded ring mounted over the threaded portion of said accessory assembly, a supporting surface or edge is provided to a locking pin that passes through cooperating slots in the accessory assembly and radial through holes in the shoring post member to keep the post member and the accessory assembly at a fixed position with respect to each other. The lower most end of the threaded portion comes in abutting contact with the upper end of the scaffold vertical member thus transmitting the bearing load therethrough. A user can selectively adjust the effective length of the scaffold and shoring assemblies by rotating the ring assembly.

Abstract: An improved load-supporting system for scaffolding, lengths of elongated stock used in the construction industry, tools, and other loads includes a unique system for adjusting the height at which a load is held above a supporting surface. The invention includes a column having a column axis of alignment and at least one sleeve disposed about the column in coaxial sliding engagement therewith. The sleeve has an appendage forming a radially inwardly facing jaw and a jamming washer that surrounds the column and extends into the jaw. The height at which a load is held above a supporting surface is varied by adjusting the relative longitudinal positions of the sleeve and the column. By momentarily forcing the jamming washer into perpendicular alignment relative to the column, incremental adjustment of the relative positions of the sleeve and the column occur.