| 摘要 |
A single piece safety brake having no moving parts for attachment between a safety line secured to a structure and a safety belt line worn by an aerial workman to prevent falls by the workman. The brake comprises a hollow helical guide member with an arcuate axis adapted to permit the safety line to be passed therethrough. A connecting eyelet may be located at one end of the guide member for connecting the safety belt line thereto. A serrated opening having inwardly projecting teeth is provided opposite the eyelet for exerting a drag on the safety line. The brake may be placed at any position on the safety line and easily moved there along by the workman. A downward force applied to the eyelet causes the brake to assume a substantially horizontal position, bringing the inwardly projecting teeth into contact with the safety line to exert a drag thereon and prevent downward movement of the brake along the safety line.
|
