A cutting method and apparatus for closures of the “tethered” type are disclosed, in which a spindle that carries a closure is moved to a cutting device with one or more horizontal blades and at least one vertical or oblique blade. During cutting, the spindle rotates and the closure rolls on the cutting device. The spindle, which is fed several times to the cutting device carrying each time a different closure, comprises a portion made of a softer material than the blades so that during cutting the blades penetrate the material of the closure and then sink into the softer portion of the spindle. Feeding the spindle that carries the closure to the cutting device is coordinated with rotation of the spindle so that the vertical or oblique blade, each time that the spindle is fed to the cutting device, always meets the same zone of the softer portion of the spindle.

A cutting device for cutting rock includes a disc and a plurality of cutting elements secured to the disc. The disc is supported for rotation about an axis of rotation, and the disc includes a peripheral edge extending around the axis of rotation. The plurality of cutting elements are spaced apart along the peripheral edge of the disc and positioned in a cutting plane. Each of the cutting elements includes a base portion and a cutting portion including a cutting edge, and the cutting portion has a width that is larger than a width of the base portion.

A roof cutter and a method of cutting a roof is provided. The roof cutter includes a base that is movable between a retracted configuration and a cutting configuration. In the retracted configuration, the blade is displaced from the roof. In the cutting configuration, the blade is positioned so as to facilitate cutting of the roof. The roof cutter includes a stop assembly and an engagement member that is configured to engage with the stop assembly when the base is in the cutting configuration, thereby establishing a maximum cutting depth. A dampening mechanism softens impacts associated with the blade moving to the cutting depth and absorbs vibrations associated with cutting the roof at the cutting depth. An adjustment assembly is configured to selectively adjust the cutting depth and/or to selectively restrain the base in the retracted configuration, thereby preventing the blade from cutting the roof.

A cutting apparatus cuts a workpiece by a cutting blade. The cutting apparatus includes a mount flange on which the cutting blade is mounted and a replacement apparatus that replaces the cutting blade mounted on the mount flange with the cutting blade for replacement. The replacement apparatus includes a rotating part, a first holding part that holds the cutting blade mounted on the mount flange on a front surface side, a second holding part that holds the cutting blade for replacement on a front surface side, and a nut rotation part that has a nut holding part that holds a nut for fixing the cutting blade to the mount flange and rotates the nut held by the nut holding part. The rotating part is coupled to the first holding part, the second holding part, and the nut rotation part.

A food product forming machine is configured to slice food product into slices. A main frame mounts a load assembly which receives food product and moves the food product through an opening in the main frame, a feed assembly downstream of the load assembly which moves food product through the main frame, and a slicing assembly downstream of the feed assembly which slices the food product into slices. In a first embodiment, the load assembly is at a rear end of the main frame, and in a second embodiment, the load assembly is at a side of the main frame. The load assembly is pivotally mounted to the main frame.

A rotary cutting disc (10) comprising two coaxial mutually opposed disc-shaped elements (12a, 12b) each having a circumferential edge, wherein circumferential edges (14a, 14b) of the disc-shaped elements (12a, 12b) are joined together forming a cutting edge (16) of the cutting disc (10); wherein each of the disc-shaped elements (12a, 12b) comprises one or more at least partly curved elongated deformation lines (30), wherein the one or more deformation lines (30) have a radial distance from the centre (26) of the cutting disc (10) that increases along at least a part of the length of the deformation line (30). The rotary cutting disc (10) has an increased critical speed that allows improving the efficiency of a cutting operation with a cutting disc while maintaining acceptable levels of quality, cutting precision and safety.

An improved detachable cutting assembly used in a food cutting machine includes a rotating disc with a window and a pivot hole. A flap is connected radially to the rotation axis of the cutting machine by its insert ring. The insert ring includes a fixing area in which at least one nut is embedded and on which there is at least one fastening hole coinciding with the at least one nut, and a lifting wedge on which a blade is partially embedded, leaving the cutting edge of the blade protruding on the upper face of the rotating disc through the window of the rotating disc. Existing in the fixing area of the rotating disc, there is at least one fastening hole coinciding with the at least one fastening hole and the at least one nut of the flap and capable of fixing the whole assembly by linking elements.

A cutting device for cutting rock includes a disc and a plurality of cutting elements secured to the disc. The disc is supported for rotation about an axis of rotation, and the disc includes a peripheral edge extending around the axis of rotation. The plurality of cutting elements are spaced apart along the peripheral edge of the disc and positioned in a cutting plane. Each of the cutting elements includes a base portion and a cutting portion including a cutting edge, and the cutting portion has a width that is larger than a width of the base portion.

A cutting assembly for use in a hydro-cutting system in which water and food products are conveyed through tubes and the food products are sliced into smaller pieces. The cutting assembly includes multiple disks and U-shaped blades. Legs of the blades are mounted between the substantially parallel disks on opposite sides of the disks, thereby holding the blades in place. A rotationally-driven motor driveshaft extends through the assembly and the assembly is mounted in a tube. When the water and food products are conveyed into the cutting assembly, the rotating assembly slices pieces from the food product, and the pieces are separated from the water for later use or processing. The water can be used in another slicing cycle.

The invention relates to an interface between a knife and a knife holder, wherein the knife and the knife holder are designed such that the knife can be mounted on the knife holder in such a way that the knife is initially positioned on the knife holder in the axial direction, and then by rotating either the knife relative to the knife holder and/or the knife holder relative to the knife, the knife is locked on the knife holder with respect to the axial direction, wherein the knife has a single central fastening opening which is delimited by a knife edge region, and the knife holder has a fastening section for the fastening opening of the knife, which is delimited by a holder edge region.