Ladder leveler

Claim 1

A ladder leveler comprising, a ladder having a pair of parallel legs spaced apart by rungs which interconnect them, each of the said legs being channel shaped with spaced flanges projecting parallel to the rungs, at least one leg of the ladder having an adjustable extension mounted to it for extending the effective length of said leg to enable said ladder to rest stably on uneven ground, said extension being in the form of a channel having a back wall and spaced side walls extending from the back wall, said side walls projecting parallel to the said flanges of said one leg, said extension also including inturned retainer lips extending from the side walls and projecting reversely toward said back wall, the said one leg being slidably embraced within the channel and the respective flanges thereof retained between said retainer lips and the adjacent side walls, said extension permitting only longitudinally sliding movement of the leg with respect to it, and a lock for locking the longitudinal position of the extension of the leg, said lock being mounted to one of the extension and the leg, the other of the extension and the leg having a series of longitudinally spaced holes, said lock including a finger projecting through said one of said extension and leg and selectively engageable in the respective holes of said series to prevent movement of the extension on the leg.