A cutting device for cutting a pipe having a pipe wall. The cutting device includes an elongate carrier having a tool end which is engageable with a power tool and an opposed free end. The device includes a guide wheel located at the free end of the carrier which is loosely mounted thereon for rotation relative thereto, having a bearing surface extending parallel to a longitudinal axis of the carrier. The device also includes a cutting element having a peripheral cutting edge which is located adjacent to the guide wheel being positioned intermediate the guide wheel and the tool end. The cutting element is of greater transverse dimension than the guide wheel so that when the bearing surface bears against an internal surface of the pipe the distance between the cutting edge of the cutting element and the bearing surface enables the cutting element to cut through the pipe wall.

Disclosed are apparatuses and methods for cutting thin film solar cells. The apparatus may include circular knife cutter rollers, each having a knife edge and coupled with a cutter arbor, support rollers, each coupled to a support arbor and having first and second outer surfaces and a circumferential gap between the first and second outer surfaces partially defined by a first side, a second side facing and offset from the first side, a first rounded edge where the first side intersects with the first outer surface, and a second sharp edge where the second side intersects with the second outer surface. The cutter arbor and support arbor are offset, and the knife cutter rollers and support rollers are axially spaced, such that one knife edge is positioned in the gap of each support roller and the web may be fed between the cutter arbor and the support arbor.

A circular cutting blade is configured for cutting meat when turned about a rotation axis in a predetermined cutting direction. The cutting blade has a peripheral blade edge defined between the first and second sides and a plurality of circumferentially disposed cutting knives. Each cutting knife includes first and second knife sides and an arcuate knife edge that constitutes a portion of the peripheral blade edge. Each knife edge is titled and rises, relative to the rotation axis, between a first blade-edge location corresponding to a minor blade radius and a second blade-edge location corresponding to a major blade radius such that, when the circular blade is rotating in the predetermined cutting direction and cutting a work piece, the work piece first encounters the first blade-edge location of each cutting knife before encountering the second blade-edge location of that cutting knife.

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.

A tablet splitting apparatus includes a guide, a catcher, and a splitting mechanism. The splitting mechanism comprises a pair of blades and a pair of blade shifters. The guide, the catcher, and the splitting mechanism are accommodated in a housing. The housing includes an opening and a support. The support and the guide each include a sliding portion. The guide disposed at the supporting position is slid along the sliding portion of the support so as to be detachable from the supporting position through the opening. The blades and the blade shifters each comprise a sliding portion. The blades and the blade shifters are in a slidable contact with each other at the sliding portions. The blades attached to the respective predetermined positions of the blade shifters are slid along the sliding portions of the blade shifters so as to be detachable from the blade shifters through the opening.

A tablet splitting apparatus includes a plate defining a vertical groove-shaped tablet passage, a catcher for holding a tablet moving downward through the passage at a splitting position, and a mechanism for splitting the tablet at the splitting position. A movable groove-depth defining member faces and covers an upstream part of the tablet passage. A sensor detects a tablet passing through the upstream part of the passage. A controller is responsive to the sensor to activate a mechanism to adjust the distance between the groove bottom surface of the tablet passage and the facing surface of the groove-depth defining member depending on the thickness of the tablet. The apparatus is configured to detect the driving current required to move the cutting blades to automatically determine a time to vary the moving speed of the blades and to release the tablet temporarily held at the splitting position, depending on the thickness of the tablet.

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 engaging a rock face includes a disc body supported for rotation about an axis of rotation, and a plurality of peripheral portions removably secured to the disc body. Each of the peripheral portions including a plurality of cutting bits positioned on a peripheral edge. The peripheral edge of each peripheral portion is aligned with the peripheral edges of adjacent peripheral portions.

A cutting device for a cutting head includes a disc, a plurality of cutting elements secured to the disc, and a plurality of wear elements secured to the disc. The disc rotates about an axis of rotation, and the disc includes a peripheral edge. The cutting elements are spaced apart from one another along the peripheral edge of the disc. The wear elements are spaced apart from one another and from the cutting elements.

A cutting blade, which is useable for cutting a reinforcing strip into reinforcing plies, includes one or more notches disposed at given intervals. When a volume of rubber separating two reinforcing threads is cut by the cutting blade, bridges of rubber are left between a rear edge of a first reinforcing ply and a front edge of a second reinforcing ply.