Levelling device for ladders

Details Levelling device for ladders Levelling device for ladders

E - Fixed Constructions

06

C

228/13

E06C 7/44 (2006.01)

Patent

CA 1162896

ABSTRACT A levelling device for ladders has a pair of locking bars pivotally mounted on the ladder. A support - arc, having feet at each end, passes through apertures in the locking bars, Springs interconnecting each locking bar and the ladder urge the locking bars to an unlocked position where the support arc is free to pass through the apertures. When weight is applied to the ladder, the locking bars are urged to a locked position, against the springs, where the sides of the apertures . engage the support arc to lock it against further movement, By adjustment of the support arc, the feet may be raised or lowered to accommodate any irregularities in the support surface so that the ladder will stand vertically. The levelling device may also be applied to tables, chairs, trestles or like articles.

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