Abstract: A debarking machine is provided with a plurality of rotors disposed in parallel, and a gap between the rotors is blocked by a comb-tooth shape partition plate. The debarking machine is further provided with a log accommodating body, rotors rotatively mounted inside the log accommodating body and provided with debarking plates, a comb-tooth shape partition plate base disposed at a space between the rotors, a comb-tooth shape partition plate detachably mounted on the comb-tooth shape partition plate base, and a fixer for fastening the comb-tooth shape partition plate to the comb-tooth shape partition plate base. The comb-tooth shape partition plate is composed of partition plate elements divided along the axial directions the rotors, and each partition plate element is detachable separately. Thus the comb-tooth shape partition plates can be rebuilt and replaced easily.

Abstract: The present invention relates to an apparatus for recycling waste raw material, capable of melting and recycling, according to size, small-particle waste metal transported by a small-particle waste metal conveyer (411), medium-particle waste metal transported by a medium-particle waste metal conveyer (412), and large-particle waste metal transported by a large-particle waste metal conveyer (413), and of recycling slag transported by a slag conveyer (414) into cover material, thereby recycling resources as well as preventing environmental pollution in advance.

Abstract: A method, performed by a centrifuge, for treating toughness and hardness of drill bit buttons is provided. The centrifuge comprises a chamber formed by a stationary side wall and a bottom which is rotatable around a rotation axis, the bottom comprising one or more protrusions which at least partly extends between the rotation axis and the side wall, the side wall comprising at least six pushing elements arranged around a periphery of the side wall. The method comprises rotating, by rotation of the bottom with the protrusions, the drill bit buttons around the rotation axis, pushing, by the pushing elements, the drill bit buttons from the side wall during the rotation of the bottom, collectively forming the drill bit buttons into a torus shape at the bottom of the chamber for inducing collisions between the drill bit buttons, thereby treating the toughness and hardness of the drill bit.

Abstract: Systems and methods for controlling the temperature of items such as a sample in a vessel or a specimen, in a thermal bath using thermally efficient pellets as the thermal media. The pellets are typically oblong metallic or oblong metallic-coated pellets with rounded edges, a hardened surface, a smooth polished finish, and characteristics that enable efficient thermal communication between the bath's thermal source, the pellets, and the items that are inserted into the mass of pellets. Further, the pellets are dry and moisture and gas impermeable, and they resist microbial growth and are readily decontaminated by several methods including applying an antimicrobial compound to the pellets. The thermal source is controlled to achieve the desired temperature of the items inserted into the pellets.

Abstract: An apparatus for rotatably supporting a rotating cylindrical body. The apparatus comprises a pair of roller assemblies for supporting an annular bearing surface of a rotating cylindrical body. Each of the roller assemblies comprises a cylindrical roller having a circumferential bearing surface in supporting engagement with the annular bearing surface of the rotating body; first and second shaft extensions extending from the roller; bearings for rotatably supporting the first and second shaft extensions; and a pivot plate for supporting the bearings, the pivot plate being pivotally attached to a base by a pivot pin such that the cylindrical roller self-adjusts to the annular bearing surface of the rotating body.

Abstract: A truck for tree limb removal is disclosed in residential, commercial, municipal, utility, and line clearance applications. The truck includes a vehicle chassis supporting a plurality of wheels. A boom is supported by the vehicle chassis. This boom has an attachment end attached to the vehicle chassis at an attachment joint and a tool-supporting end rotatable and extendable relative to the attachment joint. A feller buncher tool is attached to the tool-supporting end of the boom.

Abstract: A debarking mechanism including of rotatable debarking shafts extending parallel to an advancing direction (A) of the logs to be fed therethrough, which are provided with teeth extending beyond the circumferential surface of the shaft. At least the uppermost debarking shaft is moved sideways towards the inner part of the debarking mechanism in such a way that each debarking shaft directs an impact effect on logs colliding with it and moved by the debarking shafts located in a lower position. The circumferential speed of the debarking shaft is selected to be the greater the higher the debarking shaft is positioned. A free passage is arranged for the bark passing over the debarking shaft.

Abstract: A debarking apparatus includes a cutting body having a cutting surface and a first projection configured to cooperate with a fastener. The debarking apparatus also includes a holding body for removably holding the cutting body, the holding body having a trailing surface and defining a first recess generally complementary to the first projection to receive therein the first projection in a close surrounding fit, and a first opening sized to receive the fastener. The fastener is configurable to pass through the first opening and to cooperate with the first projection and with the holding body to hold the first projection in the first recess in a close surrounding fit.

Abstract: A linkage element for a flail chain comprising more than two shank portions and more than two angled portions connecting the shank portions. The shank portions and angled portions define an interior space of the linkage element. A flail chain comprising at least one such linkage element forms a part of a flailing apparatus used to debark trees.

Abstract: A debarking apparatus includes a cutting body having a cutting surface and a first projection configured to cooperate with a fastener. The debarking apparatus also includes a holding body for removably holding the cutting body, the holding body having a trailing surface and defining a first recess generally complementary to the first projection to receive therein the first projection in a close surrounding fit, and a first opening sized to receive the fastener. The fastener is configurable to pass through the first opening and to cooperate with the first projection and with the holding body to hold the first projection in the first recess in a close surrounding fit.

Abstract: The present invention concerns an apparatus for receiving and feeding into a chipper wood to be chipped, said apparatus containing a feed conveyor receiving log bundles, a tumbling drum breaking the bundles, and a receiving conveyor. The feed conveyor is speed-controlled according to the position information of a log bundle, and the speed of rotation of the tumbling drum is adjusted depending on the amount of wood discharged from the drum. The position information of the log bundle is received for example from the torque moment or input power of the drives of the drum. Thereby the speed of the feed conveyor, respectively the rotation speed of the drum, is set to slow down as a result of the increasing toque moment or input power of the drum, respectively to speed up as a result of the decreasing torque moment or input power.

Abstract: The invention concerns a method and an apparatus for drum debarking of wood, the bark being removed from the wood in a debarking drum being rotatable alternatively in the opposite directions and having different debarking properties in the alternative directions of rotation thereof. According to the invention, the wood and the loosened bark along with it are guided to a bark separation dependent on the direction of rotation of the debarking drum.

Abstract: A feed wheel (10) for tree trunks, with rows of drive teeth (30) protruding from extended supports (20) united with a peripheral surface (18) of the wheel. In order to make the spaces between the supports (20) more self-clearing, supports (20) that are neighbours extend mutually divergently throughout the complete sideways direction of the peripheral surface (18) (at an angle ?).

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: The present invention relates to method for separating loose bark from a flow of debarked wood logs are conveyed substantially in the direction of their longitudinal axis along a substantially horizontal conveyor track. During their travel, the logs are forced into unidirectional accelerating rotation that simultaneously moves the logs laterally. An accelerating rotary motion is advantageously imparted to the logs on a rolling ramp adapted between two conveyors operating at different height levels.

Abstract: A debarking drum has a cylindrical steel shell mounted for rotation about the drum axis. The drum receives logs fed into one end and is rotated such that the tumbling action of the logs against one another within the drum causes the bark to be removed, and the debarked logs to be discharged at an outlet end of the drum. The cylindrical shell of the drum is penetrated by a multiplicity of slots at least some of which are larger than normal having a minimum width of 3½ inches, preferably 6 inches, and a length of about one to two feet. The slots are arrayed circumferentially about the drum and axially along the length of the drum. Each of the larger slots has a cover which is mounted to the exterior of the drum and is spaced to form a minimum gap between the exterior surface of the drum and the cover of two inches.

Abstract: A debarking apparatus comprises eccentric debarking discs having a non-circular perimeter shape.

Abstract: A method of measuring amount of wood (13) in a rotating barking drum (1). By means of a transducer (11), the distance of the level of the wood bed (13) in the drum is measured through an opening or openings (7) of the drum.

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 retractable debarking block for a debarker having an enclosure to receive logs for debarking in order to vary the aggressiveness of the debarking process. The block member has a debarking surface with projecting teeth and is positionable within the enclosure of the debarker to be movable between a retracted position in which the debarking surface does not contact logs in the enclosure and an exposed position in which the debarking surface is exposed to engage logs. The block member is fittable into a rotor or drum type debarker. An actuator is provided to move the debarking surface between the retracted and exposed positions. The actuator is adapted to permit automatic movement of the debarking surface toward the retracted position if the force exerted by the logs exceeds a pre-set limit to prevent damage to the blocks and the logs. Preferably, the actuator is an airbag or telescoping cylinder operable over a range of pressures to permit adjustment of the pre-set limit.

Abstract: The invention relates to a debarking machine for the debarking of logs and for the expulsion of at least some of the removed bark from a wood flow passing through the debarking machine. The debarking machine having a number of rotating debarking shafts extending parallel to an advancing direction (A) of the logs to be fed therethrough. The debarking shafts are provided with a number of teeth adapted to strip bark off the logs transversely to the lengthwise direction of the logs and at the same time to convey the logs transversely relative to said shafts. The shafts, together with the teeth thereof constitute at least a section of a support surface upon which the logs travel through the debarking machine. For feeding the logs into the debarking machine, its admission end is provided with a conveyor adapted to positively feed the logs through an opening in the admission end of the debarking machine. The feed rate and feed force of the conveyor are preferably regulated.

Abstract: The invention relates to a debarking shaft arrangement for a debarking machine (1). A number of rotatable debarking shafts (3) extending parallel to the advancing direction of the logs (2) are provided with a number of teeth (4) extending beyond the circumferential surface of the shaft (3) and adapted to strip bark off the logs transversely to the lengthwise direction of the logs. The teeth (4) are designed to be effective in both rotating directions of said rotatable debarking shafts (3), and the debarking shafts (3) are designed to be reversibly mounted in the debarking machine. Reversible debarking shafts equipped with bi-directionally effective teeth permit renewal of worn teeth on a debarking shaft by reversing the orientation of the shaft relative to the debarking machine.

Abstract: The invention relates to a debarking shaft (3) for a debarking machine (1). The debarking shaft (3) has its teeth (4) designed as a number of annular tooth rims (20), each of said tooth rims comprising two or more releasably connected elements (21, 22), having the outer periphery provided with the teeth (4) and said elements being adapted to be fitted around a body member (25) of the debarking shaft (3) by way of press clamping.

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: The invention relates to an arrangement at the discharge end of a debarking machine (12) for the preliminary debarking of logs (2) prior to a separately performed final barking and for the expulsion of at least some of the removed barks from a wood flow passing through the debarking machine. The debarking machine (1) has its discharge side provided with an extension (5), continuing from the lower section level of the support surface of the debarking machine used for bearing the logs (2), and guiding the logs (2) discharging out of the debarking machine (1). The extension may include a variable speed conveyor (7), varying the speed of which influences the admission rate of logs into the debarking machine and the dwell time of logs therein.

Abstract: An apparatus for debarking logs comprising a drum rotatable about an axis and having an inner surface and outer surface with at least one movable debarking surface adjacent the inner surface of the drum to debark logs that come into contact with the movable debarking surface at a first rate. There is at least one fixed debarking surface at the inner surface of the drum to debark logs that come into contact with the fixed debarking surface at a second rate. The movable debarking surface is movable with respect to the inner surface of the drum between an operating position to allow contact between the movable debarking surface and the logs and a retracted position to minimize contact between the movable debarking surface and the logs.

Abstract: The present invention relates to a method controlling a drum debarker by way of using the drum weighing information in the control of the drum debarking process. The method comprises the steps of determining the weight of the contents in the drum determining the filling degree of the debarking drum determining the average density of the log bunch tumbling in the debarking drum from drum weighing information and drum filling degree information, and determining a target value for the log retention time or debarking work in the debarking drum. Based on the information thus obtained, at least one following variables is controlled: the drum rotating speed, discharge rate of logs from the drum and infeed rate of logs into the drum so as to achieve the desired target value for the log retention time or debarking work in the debarking drum.

Abstract: The present invention concerns a method and an apparatus for defrosting frozen wood prior to debarking. The defrosting method of logs of the invention is based on bringing heat zone-specifically to logs in transfer motion on a conveyor according to their heat receiving capacity immediately from the moment of starting of the defrosting, and at the end of the defrosting process, the heat volume per time unit, supplied at a higher temperature, is only a part of the heat volume of the starting phase of the defrosting process. For instance, it is possible to spray water on the wood to be defrosted so that the row interval of the showers in the initial part of the piping is a fraction of the row Interval in the tail end of the piping. In the tall end of the defrosting conveyor steam can also be supplied.

Abstract: The present invention concerns a method and an apparatus for defrosting frozen wood prior to debarking. The defrosting method of logs of the invention is based on bringing heat zone-specifically to logs in transfer motion on a conveyor according to their heat receiving capacity immediately from the moment of starting of the defrosting, and at the end of the defrosting process, the heat volume per time unit, supplied at a higher temperature, is only a part of the heat volume of the starting phase of the defrosting process. For instance, it is possible to spray water on the wood to be defrosted so that the row interval of the showers in the initial part of the piping is a fraction of the row interval in the tail end of the piping. In the tail end of the defrosting conveyor steam can also be supplied.

Abstract: The invention relates to a debarking shaft (3) for a debarking machine (1). The debarking shaft (3) has its teeth (4) designed as a number of annular tooth rims (20), each of said tooth rims comprising two or more releasably connected elements (21, 22), having the outer periphery provided with the teeth (4) and said elements being adapted to be fitted around a body member (25) of the debarking shaft (3) by way of press clamping.

Abstract: The invention relates to a debarking machine for the debarking of logs and for the expulsion of at least some of the removed bark from a wood flow passing through the debarking machine. The debarking machine having a number of rotating debarking shafts extending parallel to an advancing direction (A) of the logs to be fed therethrough. The debarking shafts are provided with a number of teeth adapted to strip bark off the logs transversely to the lengthwise direction of the logs and at the same time to convey the logs transversely relative to said shafts. The shafts, together with the teeth thereof constitute at least a section of a support surface upon which the logs travel through the debarking machine. For feeding the logs into the debarking machine, its admission end is provided with a conveyor adapted to positively feed the logs through an opening in the admission end of the debarking machine. The feed rate and feed force of the conveyor are preferably regulated.

Abstract: The invention relates to a debarking shaft arrangement for a debarking machine (1). A number of rotatable debarking shafts (3) extending parallel to the advancing direction of the logs (2) are provided with a number of teeth (4) extending beyond the circumferential surface of the shaft (3) and adapted to strip bark off the logs transversely to the lengthwise direction of the logs. The teeth (4) are designed to be effective in both rotating directions of said rotatable debarking shafts (3), and the debarking shafts (3) are designed to be reversibly mounted in the debarking machine. Reversible debarking shafts equipped with bi-directionally effective teeth permit renewal of worn teeth on a debarking shaft by reversing the orientation of the shaft relative to the debarking machine.

Abstract: The invention relates to an arrangement at the discharge end of a debarking machine (12) for the preliminary debarking of logs (2) prior to a separately performed final barking and for the expulsion of at least some of the removed barks from a wood flow passing through the debarking machine. The debarking machine (1) has its discharge side provided with an extension (5), continuing from the lower section level of the support surface of the debarking machine used for bearing the logs (2), and guiding the logs (2) discharging out of the debarking machine (1). The extension may include a variable speed conveyor (7), varying the speed of which influences the admission rate of logs into the debarking machine and the dwell time of logs therein.

Abstract: A wood working machine for wood like pulp wood, saw timber or similar elongated wood parts comprises a trough designed like a tunnel. The trough has a feeding in end and a feeding out end for the wood. Rotors, each provided with helical threads on its jacket surface, are arranged in the trough for the purpose of at least partially debarking the wood. The machine performs a method where the wood during the working is taken by the rotors (6) from a portion of the trough (2) on a first level to a side-displaced portion of the trough on a second, higher level. The wood falls down to the lower level whereby tumbling of the wood is brought about at the same time as a further working of the wood is conducted. The wood during the working is taken by the rotors from the feeding in end (3) of the trough (2) to its feeding out end (4).

Abstract: Apparatus request for debarking logs comprising a generally horizontal rotary drum debarker having an inlet end, power drive device for continuously rotating the drum of the debarker generally about a horizontal axis, generally horizontal main conveyor element for conveying groups of tree length logs toward the drum, the main conveyor element having a discharge end below the axis of rotation of the drum, drive apparatus for continuously driving the main conveyor element, and auxiliary feed mechanism below the axis of rotation of the drum and between the discharge end of the main conveyor element and the inlet end of the drum for assisting the movement of groups of logs fed by the main conveyor element into the inlet end of the drum. The questions raised in reexamination request No. 90/003,655, filed Dec. 7, 1994, 90/003,826 filed May 8, 1995, and 90/004,552 filed Feb.