Patent ID: 8850725

Claim:
A trench edging member comprising: a substantially rectangular shaped horizontal section constructed to be placed on a ground surface adjacent a trench to be excavated, said horizontal section including a longitudinal front edge and a pair of side edges, an inclined vertical section joined to said substantially horizontal section forming a back stop for soil as it is thrown onto the trench edging member, said vertical section being substantially rectangular in shape and substantially the same width as said horizontal section, said vertical section including a rear longitudinal edge; said horizontal and said vertical sections of said trench edging member being formed with a plurality of undulations having peaks separated by valleys, said peaks and valleys spaced for nested engagement with like constructed trench edging members in a stacked arrangement, said undulations include a height, said height of said undulations increasing as they approach the junction between said horizontal section and said vertical section, whereby the buckling strength of said trench edging member is increased.