Carriage for cable logging system

摘要

A skyline logging system wherein a skyline cable is supported at an intermediate location by an intermediate support assembly and a logging carriage is supported on the cable and is arranged to pass over the intermediate support assembly. The carriage has inwardly tapered pulleys which ride on oppositely bevelled tracks on the top edges of an upwardly-facing channel shaped member forming part of the intermediate support assembly. The top edges have ramp-like end portions. The carriage is lifted off the cable and rides on the bevelled tracks when crossing over the intermediate support assembly. The carriage can tilt laterally relative to the intermediate support assembly while riding on the bevelled tracks because of the lateral movability of the tapered pulleys on the oppositely bevelled tracks, whereby to maintain stability during passage of the carriage over the intermediate support.