Abstract: The present invention relates to a conveyor system for log debarking and chipping. Specifically, a conveyor system for log debarking and chipping is provided that, in accordance with the present invention, conveys tree-length logs to and into a debarking drum and conveys debarked logs from the debarking drum to a chipper for chipping the debarked logs. The present invention provides a system adapted for long life, low maintenance and is adapted to withstand high impact loading while permitting high volume log processing.

Abstract: A cylindrical classifier includes a first rotating cylinder having a surface composed of parallel separator rods or tubes that extend along the length of the cylinder. The tubes or rods are spaced from each other to prevent oversized objects from passing between them. Material to be classified is fed to the interior of the cylinder. As the cylinder rotates, objects of the desired size and smaller objects pass between the spaced separator rods and exit the cylinder. The first cylinder is surrounded by a second coaxial cylinder so that there is a space between the first and second cylinders. The outer cylinder has a separating screen which prevents objects of a desired size from passing through.

Abstract: An infeed conveyor for feeding wood of a variety of types and lengths to a debarking drum which can be adjusted in height so as to optimize the infeed conditions as desired. The conveying apparatus is adapted to convey tree-length logs to a debarking drum. To that end, the system includes a foundation and a conveyor disposed vertically above the foundation. The conveyor has an inlet end at which logs to be debarked are loaded and an outlet end adjacent the debarking drum. The conveyor is mounted to the foundation so that the height of the inlet end and/or the outlet end can be selectively varied with respect to the foundation assembly. The conveyor is then held at least temporarily held at a selected height and/or inclination.

Abstract: A wood chipping apparatus which includes a substantially closed chipping area for capturing and chipping slivers. The chipping apparatus includes a rotating cutting disk and a first anvil whereby most wood is chipped. Wood that is chipped passes through slots in the cutting disk to the discharge side of the apparatus. A second anvil or wear plate and an outer containing wall form, with the housing, the disk and the first anvil, a substantially closed compartment adjacent to, but downstream of, the first anvil. Wood parts that escape chipping by the first anvil and pass between the first anvil and the disk are trapped in the compartment until they are chipped by rotating blades which define, together with the disk and one side of the compartment.

Abstract: An infeed chute with a material and air deflector is provided for a shredding device such as a bark hog. The infeed chute is attached to the inlet of the cutting device and a material and air deflector is defined therein for preventing material from being ejected out of the infeed chute by the cutting blades without substantially obstructing material inflow. The material and air deflector is attached to the inside of the infeed chute and includes a flat plate upstream deflector surface and a curved downstream deflector surface. The deflector surfaces extend across the infeed chute to define a substantially tortuous path between the inlet and outlet of the infeed chute to prevent material ejected by the cutting device from leaving the inlet of the infeed chute or from obstructing infeed flow.

Abstract: A system for taking up the slack in two flexible resilient hoses of a high pressure system, for alternately supplying fluid under high pressure from a fixed source to, and exhausting it from, a double-acting fluid motor movable relative to the source, includes a line connecting the hoses intermediate their ends and a movable counterweight connected with the line movably along an intermediate length thereof so that alternate stretching and alternate contracting of the hoses, by the alternate supply of pressure fluid to and the alternate exhaust of pressure fluid from the hoses, does not move the counterweight.

Abstract: An improved wood chipping installation of reduced overall height has conveyor means for feeding wood pieces to a chipping machine. The conveyor means includes a conveyor type screening device for separating proper size chips from oversize chips. Means are provided for transferring material chipped by the chipping machine back to the infeed end of the screening device so that oversize chips are fed by the conveyor, along with other wood pieces, back into the chipping machine while proper size chips and fines are separated out.

Abstract: In a timbering operation wherein the felled trees are fed into a chipper for conversion to chips at the timbering site the chips are fed into a trailer-mounted rotary cylindrical screen which separates the chips from dirt and fine bark particles. Preferably the chips entering the cylindrical screen are blown into engagement with an impact plate to aid in disloading particles of dirt and bark from the chips. The chipper may be mounted on the same trailer or may be a separate trailer-mounted unit.

Abstract: In a wheeled industrial vehicle a single foot pedal operates to disengage an engine from its transmission and to apply the brakes. This function is accomplished by means of a special mechanical linkage including a ratio arm to which a force is applied by the foot pedal, the arm acting first to apply slight braking, second to disengage the engine from the transmission when the brake system begins to generate resistance to further application of braking force and third to apply full braking force when the engine has been disengaged from the transmission.