A material reduction machine includes a prime mover driving a cutting mechanism. An infeed portion engages a piece of material to feed it forward to the cutting mechanism. A sensor senses a machine load parameter via the cutting mechanism and/or prime mover and reports a signal to a controller operatively coupled to the infeed portion to control sequential cutting cycles on the piece of material. The controller utilizes a stored first stop threshold value for stopping a first cutting cycle and continues monitoring the signal as machine load increases momentarily after reaching the first stop threshold. The controller determines and adopts a second stop threshold value based on observation of the machine load parameter indicative of maximum load during the continued monitoring following attainment of the first stop threshold, and further being based on a stored correction factor. The second stop threshold value is used for a second cutting cycle.

A device and method for reducing a size of feed material. The device has a knife ring that is stationary within a housing or rotates around an axis. The knife ring has rod-shaped knife carriers that are disposed concentrically around the axis in an axis-parallel position at a mutual circumferential distance from each other and that form an inner circumferential surface of the knife ring with their sides facing the axis. Each knife carrier having a receptacle for fastening a flaking knife. The flaking knife protruding by its edge between two knife carriers into the flaking chamber. A measuring instrument includes at least one distance sensor that measures a distance of the inner circumferential surface and/or the edges of the flaking knives from the at least one distance sensor.

A wood chipper having a rotatable drum configured to reduce the size of wood fed into the wood chipper; a sensor configured to sense a speed of rotation of the rotatable drum; and a controller operably connected to the sensor. The controller is configured to cut power to the rotatable drum when the speed of rotation of the rotatable drum drops below a pre-set threshold value. The controller is operably engaged with a centrifugal clutch that is engaged to enable the rotatable drum to be rotated. When the speed of drum rotation drops below the threshold value because debris is slowing down rotation of the drum, the centrifugal clutch is disengaged by dropping engine speed. Disengagement of the centrifugal clutch cuts power to the drum and rotation thereof ceases so that the debris may be cleared.

A chipping machine includes a debarking assembly, a chipper assembly, and a log advance system to conveys logs through the chipping machine and into contact with the debarking assembly and chipper assembly. A rotating chipper disk cuts chips from the log. A housing encloses the chipper disc and includes a spout that provides an exit path for chips out of the housing. The chipper assembly includes a first path for collecting bark and directing bark out of the machine. A second path that is separate from the first path collects trash and directs the collected trash to first path and out of the machine. An inlet of the second path is an opening formed in a base of the housing. The second path includes a chute onto which trash falls and then slides under the force of gravity to the first path.

A chipping machine includes a debarking assembly, a chipper assembly, and a log advance system to conveys logs through the chipping machine and into contact with the debarking assembly and chipper assembly. A rotating chipper disk cuts chips from the log. A housing encloses the chipper disc and includes a spout that provides an exit path for chips out of the housing. The chipper assembly includes a first path for collecting bark and directing bark out of the machine. A second path that is separate from the first path collects trash and directs the collected trash to first path and out of the machine. An inlet of the second path is an opening formed in a base of the housing. The second path includes a chute onto which trash falls and then slides under the force of gravity to the first path.

An apparatus, system and method for adjusting and setting a fixed position of an axially displaceable shaft and rotary chipper disc combination, without requiring an attachment to or obstruction of an end face of either end of the axially displaceable shaft. A rotary chipper disc recoil mechanism is also provided for the purpose of detection of unwanted axial forces placed upon the rotating shaft caused by unintentional chipping of metal, and for limiting consequential damage caused by the unintentional chipping of metal and other non-wood materials.

Disclosed is a process for the treatment of wood strands suitable for the manufacture of OSB boards, in which the wood strands are treated with steam without drying after extraction, the steam being passed over the wood strands at a temperature between 80° C. and 120° C. and a pressure between 0.5 bar and 2 bar. Also disclosed is a process for the production of OSB wood-based boards including the steps of a) producing wood strands from suitable wood logs; b) treating at least part of the wood strands with steam; c) drying the steam-treated wood strands; d) gluing the steam-treated and dried wood strands and gluing the non-steam-treated wood strands with at least one binder; e) scattering the glued wood strands onto a conveyor belt; and f) pressing the glued wood strands into an OSB wood-based board.

The disclosure discloses a cutterhead assembly of a branch grinder, including a cutterhead body, a center shaft disposed in a center of the cutterhead body and at least two installing shafts circumferentially distributed by using the center shaft as an axis, each of the at least two installing shafts is successively provided with a limiting plate, a first blade, a first bush, a second blade and a second bush from top to bottom, the first blade and the second blade are in clearance fit with a corresponding installing shaft in the at least two installing shafts, a center of the limiting plate is positioned at an upper end of the center shaft and a gap is kept between the limiting plate and an upper end of the first blade, an outer end of the limiting plate is stretched into the installing shafts and fixed, through the above installation, the first blade and the second blade can be completely rotated in 360 degrees relative to the installing shafts, in a circumferential rotating process of the blade, shredded wood can be taken out from the center of the cutterhead body, and a problem, that material blockage is caused to affect a cutting effect of the cutterhead assembly due to the material is stacked in the center of the cutterhead body 1, is avoided.

A method of manufacturing engineered wood is provided, the method comprising: feeding wood through a processor while exposing the wood to compressive and tensile forces to produce naturally oriented strands of fibers; adding an adhesive to naturally oriented strands of fibers to provide adhesive covered strands; feeding the adhesive covered strands into a press; applying a first pressure to the adhesive covered strands to provide a pressed wood with a selected first dimension and a selected second dimension; and applying a second pressure normal to the first pressure to the pressed wood to provide an engineered wood having the selected first dimension, the selected second dimension and a selected third dimension and a selected density. An installation for manufacturing the engineered wood is also provided.

A flywheel and paddle assembly for a chipping or shredding apparatus, including a wood chipper, a brush chipper, and a leaf shredder. The assembly has a flywheel attached coaxially to a drive shaft. The flywheel has at least one aperture extending from the front side to the back side, and carries at least one knife adjacent to the at least one aperture. The knife presents a knife edge on the front side of the flywheel. A paddle is rotatably mounted coaxially to the drive shaft adjacent to the back side of the flywheel. The paddle is configured to rotate on the drive shaft independently of the flywheel. A chipping or shredding apparatus incorporating the aforesaid flywheel and paddle assembly is also disclosed.