Abstract:
A batch debarking apparatus includes a rectangular bin and a plurality of abrader rotors placed across the bin. Log batches are debarked within the bin and discharged laterally through one sidewall of the apparatus.
Abstract:
Apparatus for debarking logs including a drum mounted for rotation about an axis to define an inner drum surface. Debarking apparatus is provided on the inner surface configurable to debark logs within the drum at a first rate on rotation of the drum in a first direction and at a second rate when the drum is rotated in a second direction.
Abstract:
A debarking device includes a drum having a radically outer peripheral surface, the drum being arranged to be rotated about a longitudinal axis. Two bogies, spaced from one another in the circumferential direction of said outer peripheral surface of said drum support the drum from a foundation. Each bogie includes a travelling wheel and a driving wheel, these being spaced from one another in the circumferential direction of the outer peripheral surface of the drum, and each journalled on respective axles for rotation about a respective axis which is substantially parallel to the longitudinal axis. A respective structure is interposed between each said bogie and the foundation, and supports the drum supported by the respective bogie on the foundation. Each structure includes three elastic elements each having a respective cushion. The cushions are located beside one another in the circumferential direction, with spacing therebetween, so as to include an intermediate cushion and two outer cushions. The intermediate cushions are more rigid than said intermediate cushion. Each structure further includes a plate arrangement supporting a respective bogie and being supported by the cushions of a respective three elastic elements.
Abstract:
A bark slitting machine has swing mounted slitting arms on a rotating ring through which a log is fed. The arms have a swept back outer portion with a cutting edge and an attack angle having a size preferably like that of the lead angle of a helix determined by the path of a point rotating at a given rotational speed about the circumference of a log advancing at a given linear speed.
Abstract:
Lubricating oil supplied to the annular antifriction bearing mounting a rotary ring log barker ring on ring-mounting means, and lubricating oil supplied to air seals for a rotary ring log barker annular air plenum chamber is returned to an annular oil-collecting chamber in the inner periphery of the rotary ring. From such oil-collecting chamber oil is scavenged by a stationary scoop tube in the upper portion of the rotary ring-mounting structure and drained by gravity to a reservoir from which it may be pumped for recirculation through the components of the barker requiring lubrication.
Abstract:
The disclosure herein describes improvements to a log debarking machine which consists in allowing the mounting of six debarking tools on the machine rotor which has a central log-passing opening of eighteen inches in diameter. The rotor is arranged with a series of bearing seats for receiving and supporting the tool spindles. The improvements further include a cleaning knife for cutting the bark fiber which adhere to the tools.
Abstract:
A debarking tool for a rotor type debarking machine is provided with an arcuate body having a substantially sharp log engaging climbing edge portion so arranged thereon and positioned closely adjacent a cutter member on the adjacent free end of the arcuate body as to aid the logs in quickly deflecting the debarking tool out of the path of the logs during rotation of the tool with the ring rotor.
Abstract:
An annular barking rotor has a hub portion rotatably supported by a concentric anti-friction bearing and supports a plurality of radially pivotable barking arms each biased by an air motor mounted on the rotor and connected to an annular air chamber within the rotor. Air is supplied to the chamber and motors through a set of sliding air shoes, and the pressure of the air is controlled by a series of pilot operated valves, relay exhaust valves and regulating valves actuated by controls located at a remote console. Pilot operated diaphragm exhaust valves are carried by the rotor for connecting the air chamber directly to atmosphere and are actuated by a pulse of pilot air supplied through another air shoe connected to the main air supply through a pilot operated valve controlled by a valve also located at the console.
Abstract:
The rotary ring of a log barker has a flaring mouth carrying limb-cutting bits in radial planes. Hooked ends of swinging arms rotate around a log as it is moved lengthwise to scrape off the bark. Bark and limb pieces fall into a hog having stationary shearing bars cooperating with rotary shearing bars carried above a plate rotating about a vertical axis. Hogged material dropping through apertures in the plate is swept out of the casing by vanes carried by the rotor.