A protection device for tools for cutters and shredders and the like, arranged on a tool-holder seat for a tool-holder rotor rotatable about the axis of the rotor, said tool being housed in a seat arranged on the tool-bolder rotor, and formed by a first surface arranged at the front in the cutting direction and a second surface onto which the tool is fixed with its opposite surface to the cutting direction, the tool having a body that has a front surface in the rotation direction of the rotor, and a rear surface opposing the front surface. The tool and/or the seat having lateral projections and a protection device is dismountable connected to the seat of the tool, laterally as a protection for the tool and the plates being arranged partially between the lateral projections, of the tool and/or the seat of the tool, and the tool-holder rotor.

A shredder includes a shredder box and a shredder rotor positioned within an interior of the shredder box. The shredder rotor is rotatable about a rotor axis and has a plurality of rotor teeth. An access door is pivotally moveable between an open position and a closed position, the access door defining a side wall of the shredder box when in the closed position. A shredder comb is positioned at an interior side of the access door and includes a plurality of shredder comb teeth. When the access door is in the closed position, the shredder comb is positioned at a shredding location to intermesh with the plurality of rotor teeth for shredding material input to the shredder box. The plurality of shredder comb teeth are removable and reversible for use in two orientations.

A hand operated herbal grinder for the disintegration of herbs, spices and plant matter. The apparatus allows a user to place plant matter into the top of a first enclosure. The actuation of the apparatus, particularly through the use of a drive handle rotates blades inward to disintegrate the plant matter with rotational cutting blades.

A bone grinder is provided herein. The bone grinder may have a grinding chamber, an intermediate zone, and a primary cutting element and a secondary cutting element. The intermediate zone may have a first wall and a second wall within the grinding chamber, and the intermediate zone may separate the primary cutting element from the secondary cutting element. The first wall and the second wall may slope inward such that a distance between the first wall and the second wall generally decreases from the primary cutting element to the secondary cutting element. The primary cutting element and the secondary cutting element may be positioned within the grinding chamber to sequentially perform primary cutting operations and secondary cutting operations on a bone. A drive mechanism may operatively engage the primary cutting element and the secondary cutting element.

A waste processing machine for reducing waste material and having a safety device for shearing lines. A housing defines a cutting chamber and an intake opening in communication with the cutting chamber for receiving waste material. A disc is disposed in the cutting chamber, rotates about an axis, and has an axial surface facing the intake opening. A cutting member is fixed to the disc for revolution about the axis concurrent with rotation of the disc for reducing waste material. A cutting anvil is coupled to the housing adjacent to the intake opening and faces the axial surface of the disc for reducing waste material between the cutting anvil and the cutting member. A line shear element is attached to the housing, extends into the cutting chamber toward the axial surface of the disc, and is spaced from the cutting anvil for shearing lines caught by the rotating disc.

A method for separating composite materials and mixtures, in particular solid-material mixtures and slags, and to a device for carrying out said method. The method for separating composite materials and mixtures comprises the step of transporting the composite material or the mixture through a separating device. The composite material to be separated or the mixture to be separated is excited by mechanical impulses as it passes through the separating device and is thereby separated. The device (1) for carrying out the method comprises a drive unit (21) for driving a rotor element (32), which is connected to a bearing/shaft unit (22) and which is part of a rotor unit (31). The rotor element itself has at least one rotor tool (33) and each rotor tool has at least one rotor tool component (34) and is surrounded by a stator element (42), which is part of a stator unit (41). The stator element itself has at least one stator tool (43) and each stator tool has at least one stator tool component (44). The rotor element and the stator element are substantially cylindrical.

A safety device for a waste processing system having a powered cutting system including a rotor rotatably mounted within a housing is disclosed wherein the improvement relates to a safety device which includes a first safety device disposed within the housing, spaced from the rotor and thereby defining a first gap therebetween through which a cable that has been captured by the rotor assembly is automatically cleaved when disposed between the first safety device and rotor assembly.

The present disclosure discloses a device for rapidly processing kitchen waste into an organic fertilizer, including a box; a crushing mechanism, where the crushing mechanism includes a fixed cutter set, a rotating shaft and a moving cutter set, the fixed cutter set is fixedly arranged on an inner wall of the box, the rotating shaft is arranged in middle of a bottom of the box, the moving cutter set is rotatably mounted on the rotating shaft, the moving cutter set includes a plurality of moving cutters, and the moving cutter set and the fixed cutter set move relative to each other to grind the kitchen waste; a heating mechanism, where the heating mechanism is arranged in the box, and is configured to heat the kitchen waste; and a deodorizing mechanism, where the deodorizing mechanism is arranged at the bottom of the box, and is configured to deodorize the kitchen waste.

A food waste disposer, including a fixed cutter wall (40) and a rotating cutter head (30) located below the fixed cutter wall (40), the rotating cutter head (30) includes a body portion (32) and a plurality of working teeth (33) extending outwardly from a periphery of the body portion (32); each of the working teeth (33) are provided with cutting surfaces (330) on both opposite side portions thereof, and each of the cutting surfaces (330) is obliquely disposed relative to a top surface and a bottom surface of the working tooth (33) where the cutting surface is located; the fixed cutter wall (40) includes a circular side portion (42) and a plurality of fixed teeth (41) extending outwardly from an end of the circular side portion (42) adjacent to the rotating cutter head (30); the fixed teeth (41) are engaged with the working teeth (33) of the rotating cutter head (30) to perform cutting; each of the fixed tooth (41) are provided with cutting surfaces (410) on both side portions thereof, and each of the cutting surfaces (410) of the fixed teeth (41) is inclined disposed relative to a top surface and a bottom surface of the fixed tooth (41) where the cutting surface is located.

An apparatus for comminuting solid waste material is provided. The apparatus includes a casing and a comminutor assembly including a plurality of cutting elements mounted on said first shaft in interspaced relationship with a plurality of second cutting elements mounted on said second shaft. The casing includes laterally opposed side rails each having a wall extending parallel to the flow direction of the liquid through the comminution chamber, a plurality of planar fins projecting outwardly of said rear wall in the direction of said stack, aligned with the flow direction of the liquid and being spaced from each other in a vertical direction to form slots therebetween, and the planar fins having a leading edge extending from the wall upstream a rearward edge, the rearward edge extending from an outermost portion of the leading edge toward the wall, and the fins have a path ratio greater than 1.55 to 1.