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US 5,673,625 AGranted
Method of yarding logs by introducing slack into a mono-cable system
OwnerGale Edward Dahlstrominventor
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OwnerGale Edward Dahlstrominventor
Estimating the term…
A method and apparatus for yarding logs by introducing slack is provided for use with a mono-cable system having a continuous loop of cable strung through a logging area along a path that the harvested timber is conveyed. The invention includes advancing the mono-cable system along the path of the mono-cable system until a length of cable not being used to secure a log is available. Slack is then created in the cable of the mono-cable system, after which the cable is transported to a log located on either side and distant from the path. The choker is then secured to the log, and the hook of the choker is secured to the cable. The slack of the cable is then eliminated, such that the secured log is retrieved from its felled position distant from the path to a position adjacent the path. The cable is then advanced such that the hook of the choker is caught on a stopper of the mono-cable system, and the log is moved along the path to a transport location from which the log is removed from the logging area. The use of slack in the mono-cable system provides superior selective harvesting of trees at a logging site, reduces the labor required for retrieving such logs, increases the capacity of the mono-cable system, and reduces dangers heretofore inherent in conventional mono-cable systems caused by the height and constant tension required in the cable, while retaining the advantages of mono-cable systems over conventional line systems.
A method of yarding logs for use with a mono-cable system having a continuous loop of cable strung through a logging area along a path that the logs are to be conveyed, a drive system for advancing the continuous loop of the cable along the path, a tension system for creating slack in the cable, and choking equipment including chokers, hooks connected to one end of each choker, and stoppers along the length of the cable at intermittent locations, used to secure felled trees or logs to the cable, the method comprising:
A method of yarding logs for use with a mono-cable system having a continuous loop of cable strung through a logging area along a path that the logs are to be conveyed, a drive system for advancing the continuous loop of the cable along the path, a tension system for creating slack in the cable, and choking equipment including chokers, hooks connected to one end of each choker, and stoppers along the length of the cable at intermittent locations, used to secure felled trees or logs to the cable, the method comprising:
A mono-cable system for yarding logs comprising:
Dependencies are inferred from the claim text.