초록 ▼

A method of logging a tree includes the steps of cutting the tree part way through the trunk with a cut near the bottom thereof, leaving a connecting portion of the trunk connecting an upper portion of the trunk above the cut to a lower portion of the trunk below the cut. A helicopter above the tree

A method of logging a tree includes the steps of cutting the tree part way through the trunk with a cut near the bottom thereof, leaving a connecting portion of the trunk connecting an upper portion of the trunk above the cut to a lower portion of the trunk below the cut. A helicopter above the tree is connected to a point near the top of the trunk. The helicopter is moved away from the tree, thereby breaking the connecting portion and allowing the upper portion of the tree to be carried away by the helicopter. The method utilizes a helicopter logging tool comprising a body having a connection for a lifting device. There is a hook on the body guide connected to the body by a hinge. The guide extends vertically downwards away from the body when the tool is connected only to the lifting device. There is a hook on the body to one side of the guide for engaging an object. When the hook engages an object and the body is lifted by the lifting device, the body rotates and the guide rotates about the hinge so that the guide continues to extend vertically. There is also a jig apparatus for cutting the tree. There are two guides bars, at least one of which has a stop mechanism. Spikes allow the guide bars to be connected to the trunk of the tree in horizontal, parallel positions on opposite sides thereof. A chain saw mount is slidingly received on each of the guide bars. When a chain saw is placed on the chain saw mounted and moved towards the trunk of the tree along the guide bars, the tree is cut to a position determined by the stop mechanism on the guide bars.

대표청구항 ▼

[ What is claimed is:] [1.] A method of logging a tree having a trunk with a top and a bottom, comprising the steps of:cutting the tree part way through the trunk with a cut near the bottom thereof, leaving a connecting portion of the trunk connecting an upper portion of the trunk above the cut to a

[ What is claimed is:] [1.] A method of logging a tree having a trunk with a top and a bottom, comprising the steps of:cutting the tree part way through the trunk with a cut near the bottom thereof, leaving a connecting portion of the trunk connecting an upper portion of the trunk above the cut to a lower portion of the trunk below the cut;connecting a helicopter above the tree to a point near the top of the trunk; andmoving the helicopter away from the tree, thereby breaking the connecting portion and allowing the upper portion of the trunk to be carried away by helicopter.