Woodworking – Bark rosser – Tree climber
Patent
1985-02-25
1986-09-02
Bray, W. D.
Woodworking
Bark rosser
Tree climber
144340, B27L 100
Patent
active
046090207
ABSTRACT:
A log debarker having a frame, a stator supported by the frame, a rotor journaled in the stator for rotation about a longitudinal axis of the rotor, a rotating mechanism for rotating the rotor about the longitudinal axis, and a plurality of debarking tools attached to the rotor. An infeed mechanism positioned on the infeed end of the stator feeds logs axially into the rotor. The infeed mechanism includes a first feed roll, a second feed roll, and a third feed roll, all of which are disposed in a triangular relationship around the longitudinal axis. A first rigid link connects the first and second feed rolls, and a second rigid link connects the second and third feed rolls. An air-operated tensioning mechanism is provided having an air cylinder connected at one end to the second feed roll for adjusting the position of the infeed means relative to the longitudinal axis. The air cylinder when energized causes the first, second, and third feed rolls to move together relative to the longitudinal axis. The air cylinder includes at least one air inlet, an air outlet with a quick release valve, a sliding piston, and a solenoid valve connected to the air inlet for inputting air into the air cylinder thereby pushing the sliding piston out and opening the infeed mechanism. A limited pressure cushion on both sides of the piston of the air cylinder prevents the piston from slapping one end or the other as it changes directions.
REFERENCES:
patent: 2857945 (1958-10-01), Brundell et al.
patent: 3490665 (1970-01-01), Jonsson
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