Patent ID: 7811040

Claim:
A safety device for an appliance for lifting boards onto ceilings and walls, the appliance including a telescopic mast having an upper part accommodating a board holder, and a fraction rope and a safety rope operated by a manually controlled winch, the safety device comprising: an attachment component for attaching and fastening the traction rope and the safety rope so that the traction rope and the safety rope are at a same fastening level, said attachment component being fixed in a lower receiving part of a terminal inner section of the telescopic mast, a mechanism for tensioning the safety rope, said mechanism being external relative to the telescopic mast and situated facing the winch, and a vertically arranged shaped support part for attachment to a fixed section of the telescopic mast, the support part facilitating gripping and moving the appliance and accommodating, on a support surface of the support part, the winch on which the traction rope and the safety rope are wound, and wherein the mechanism for tensioning the safety rope is located in the support part, the fixed section has, at a location of the support part, an opening around which there is provided an externally protruding fixed V-shaped yoke joint separately mounted on a support face of the section, the yoke joint has two vertical, parallel wings, two deflecting pulleys of the traction rope and the safety rope respectively are mounted on a shaft between the wings, the shaft protrudes beyond the yoke joint and mounts the mechanism for tensioning the safety rope, the mechanism for tensioning comprises a connecting rod freely articulatedly mounted on the shaft via a positioning hole, and an other end of the mechanism receives, in opposition, another deflecting pulley of the safety rope.