SAFETY DEVICE FOR STABILISING A LADDER BY FASTENING AN INTERMEDIATE PORTION THEREOF TO THE TUBULAR OR RECTANGULAR MEMBERS OF A SCAFFOLDING OR RAILING AT ANY ANGLE

摘要

A device for preventing ladder accidents by fastening a ladder to tubular or rectangular members at any angle. The device consists of a ladder-engaging portion (1) within which the ladder upright may be locked by manually tightening a thumbscrew (2) extending through a cylindrical tube (6) secured to a clamp (3) that is fitted around a tubular or rectangular member (10) by means of a screw (4) on which a thumbnut (7) is tightened. The device is particularly suitable for use by building and construction workers.