Abstract: A locking mechanism for a ladder of the extension type having sections slidable over each other where such locking mechanism is affixed to one section and hooks over a rung of the other section to secure the two sections at the desired height, and where such locking mechanism is withdrawable from the plane of the second section during raising or lowering of this section such that it does not bounce and bump against the rungs of the second section during raising or lowering.
Abstract: The invention relates to a self-locking level support primarily for ladders and the like, the support being adjustable to fit ladders of different widths.
Abstract: In a ladder leveler of the type manually actuated through a clutch plate to free a leg extension for adjustibility purposes, a protective guard is applied to the clutch plate in a manner to preclude forces being accidently applied to the clutch plate when the leveler is in use to thereby avoid possibility of tragic accidents.