Patent ID: 7721981
Filing Date: 2010-05-25
Classification: A01G,B02C

Abstract:
1. An apparatus for chipping brush comprising at least one feed roller, a feed table, and a feed control assembly comprising: an upper feed control bar, operatively pivotally connected to the feed table; a feed control cam having at least four positions that define at least four distinct positions for the upper feed bar; a feed control linkage having a first end and a second end, the first end being operatively, pivotally connected to the upper feed bar while the second end is operatively, pivotally connected to the feed control cam; a support structure located between the first and second ends of the feed control linkage; a stop cam having two detent positions including an operating position and a stop position; a spring-centered hydraulic control valve having three positions including feed, stop, and reverse; and an actuator cam operatively, pivotally mounted to the support structure of the feed control link and operatively connected to the stop cam on a first side and the control valve on a second, opposite side and wherein the actuator cam rotates relative to the support structure of the feed control link such that the actuator cam actuates the control valve to one of said three positions as the upper feed control bar moves to any of the upper feed control bar's four positions.