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The cables can be rigged in several configurations. There are two classes; High lead logging, in which a simple loop of cable runs from the yarder out through pulley blocks anchored to stumps at the far end of the cut. Skyline, in which a carriage, pulled by hauling cables, runs along a skyline cable, providing vertical lift to the logs.
A yarder is piece of logging equipment that uses a system of cables to pull or fly logs from the stump to a collection point. [1] It generally consists of an engine, drums, and spar, but has a range of configurations and variations, such as the swing yarder. Clyde Skidder at Marathon Logging Camp near Newton, MS ~1921 Madill 124 Yarder. An ...
High lead logging is a method of cable logging using a spar, yarder and loader. It was developed by Oscar Wirkkala. It is accomplished with two lines (cables) and two winches (or cable drums). The mainline or yarding line extends out from one winch, while a second usually lighter line called the haulback line extends out from the other winch to ...
Skyline logging (or skyline yarding) is a form of cable logging in which harvested logs are transported on a suspended steel cable (a cableway or "highline") from where the trees are felled to a central processing location.
A swing yarder is a mobile piece of heavy duty forestry equipment used for pulling logs from the woods to a logging road with cables. The swing yarder is also known as a grapple yarder. In any logging operation, it is necessary to transport the harvested tree from the stump to a landing for transport to market (usually on a truck). If the ...
A choker setter or choke setter is a logger who attaches cables to logs for retrieval by skidders or skylines. [ 1 ] [ 2 ] The work process involves the choker setter wrapping a special cable end (choker) around a log and then moving clear so the yarding engineer (e.g. skidder operator) can pull the log to a central area.
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The log was taken either to a mill or to a "landing" where it would be transferred for onward shipment by railroad, road or river – either send down a flume, loaded onto boats, or floated directly in the water, often becoming part of a large log raft or "boom". Later, a "haulback" drum was added to the donkey, where a smaller cable could be ...