Abstract: A logging carriage is mounted by hinged sheaves for travel along an elevated cable for the conveyance of felled logs to a log unloading site. The carriage is moved in one direction along the elevated cable by an in haul line which is attached at one end to a powered drum in a yarder. The carriage is moved under the force of gravity in a second direction. The other end of the inhaul line is attached to a spring powered rotatable drum structure mounted on the logging carriage. A drop line for raising and lowering felled logs is mounted on a portion of the spring powered rotatable drum. The spring powered rotatable drum structure is actuated by a compressed air actuated brake assembly. A clamp assembly is mounted on the logging carriage and is selectively engageable with the elevated cable to lock the logging carriage in a preselected position along the cable. The clamp and brake assemblies are controlled by solenoid valves and a radio receiver mounted on the logging carriage.