Shaft liner assembly

A shaft liner assembly for a manhole adapted for easy assembly and disassembly on site in the ground for retaining when assembled the ground thereabout, said assembly comprising a plurality of vertically adjacent layers of arcuate segments, said segments in each layer forming a circle, each segment having two horizontally disposed arcuate edge portions, one edge portion defining the top edge of said segment and the other defining the bottom edge thereof with the top edges of the segments in a lower one of said layers being in juxtaposition with the bottom edges of the segments in a layer which is vertically adjacent thereto, each segment further having two vertically disposed substantially straight side edges, each vertically disposed side edge being outwardly reversely bent, and a series of connecting brackets, each bracket having a longitudinally extending base portion with wing portions extending from opposite sides thereof and inclined toward one another, each bracket being in vertical sliding engagement with adjacent reversely bent portions of respective laterally adjacent segments in two vertically adjacent layers of segments, the wing portions of each connecting bracket being on the opposite side of the respective reversely bent portions of the segments to the base portion to secure both laterally and vertically adjacent segments together.