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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 ground is relatively flat it may be possible to transport the tree or logs cut from the tree on a wheeled or tracked machine.
Leo Heikkinen in 1960. Leo Leonard Heikkinen (June 11, 1917 – September 10, 1999) [1] was an American entrepreneur and millionaire who founded and owned numerous forestry production companies in Prentice, Wisconsin, including Prentice Hydraulics, Inc. (now a division of Caterpillar, Inc.) [2] and Multitek North America, LLC. [1]
The winch or grapple holds the trees while the skidder drags them to a landing area. Cable skidders are more labor-intensive than grapple skidders because someone (the operator or a second person) must drag the winch line out to the logs and hook them up manually. Nowadays, cable skidders are less popular than in the past.
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.
Grapple (tool), a hook or claw used to catch or hold something; Grapple skidder, type of heavy vehicle used in a logging operation for pulling cut trees out of a forest; Grapple truck, a truck that has a grapple loader mounted to its frame; Grapple (network layer), a free software package for adding multiplayer support to computer games and ...
Oshkosh M911 tractor hauling logs. A logging truck or timber lorry is a large truck used to carry logs. [1] Some have integrated flatbeds, some are discrete tractor units, and some are configured to spread a load between the tractor unit and a dollied trailer pulled behind it.