Process and apparatus for the feeding of tree trunks to a processing machine
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 13, 1990
Grant Date -
N/A
app pub date -
Apr 29, 1988
filing date -
Mar 11, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A tree trunk is fed to a cutting station along a centerline line by a pluity of groups of centering rolls spaced along the centering line. Some rolls are driven to advance the trunks. The groups of rolls are adjustable from a centering mode to a non-centering mode by either retracting the rolls or unloading the rolls. During the advancement of a trunk successively through the roll groups, the groups are successively adjusted between their centering and non-centering modes such that roll groups located to support front and rear ends of the trunk are in their centering modes, while at least one roll group disposed therebetween is in its non-centering mode.
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