Logging carriage

摘要

A carriage is provided for guided movement along a skyline and includes guide structure for supporting a dragline for longitudinal shifting relative to the carriage. A skyline stop is provided for coaction with the carriage, a dragline abutment is provided for coaction with the carriage and the carriage includes a stop with which the abutment is engageable to limit movement of the dragline in one direction relative to the carriage. The carriage is engageable with the skyline stop to limit movement of the carriage downwardly along the skyline and the abutment is provided for engagement with the carriage stop to limit upward movement of the dragline relative to the carriage. Latch structure is shiftably supported from the carriage for movement between first and second positions and is latchingly engageable with the skyline stop and engageable with the dragline abutment when in one position and inoperative to latchingly engage the skyline stop and engage the dragline abutment when in the second position. However, the latch structure and skyline stop and dragline abutment include coacting portions for shifting the latch toward the second position thereof in response to movement of the carriage down the associated skyline to the lower limit position thereof defined by the skyline stop and movement of the dragline upwardly relative to the carriage to a position closely spaced from the upper limit position thereof defined by engagement of the abutment with the carriage stop.