| 摘要 |
A slide for frictionally engaging a flexible line to control a person's descent along the line. An outer shell has a helical opening in one side with a longitudinal offset at its lower end for receiving the line. An inner friction member, which is adjustable rotationally and longitudinally inside the outer shell, has a transverse slot in its inner end and a helical screw thread behind for frictionally receiving the line. Indicia on the friction member are visible at an opening in the outer shell to show the body weight for which the slide has been adjusted. The slide has a fail-safe lock acting between the outer shell and the friction member.
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