Abstract: Method for guiding a saw blade (1), in which method at least one guide stop (2) at least on one side of the blade is used to guide the blade. A layer of an intermediate agent (3) in a substantially solid state, such as a layer of ice, is formed on that surface of the guide stop (2) which faces the blade (1).

Abstract: Apparatus for releasably adjusting a position of a first portion of a device relative to a second portion of the device. The first portion includes a first surface, and the second portion includes a second surface. A workpiece support surface is defined by the first and second surfaces, and the first surface is rotatable relative to the second surface. A locking mechanism is provided to selectively restrain rotation of the first surface relative to the second surface. An indexing mechanism optionally is provided including a detent mechanism which selectively restrains rotation of the first surface relative to the second surface in one of a plurality of predetermined positions.

Abstract: The invention relates to a rotating cutting device for producing letter envelope cuts from a printed endless, moving material web. The position of the cut is pre-set by register marks printed on the web. In this process, the cutting device is fully automatically synchronized with the register marks. This is accomplished via a computer-supported controller which, via sensors, first determines the spacing between two adjacent marks, then adjusts the cutting device to the determined length of the section, and finally continually monitors the phase position between the knife and the register mark and changes the phase position by slightly accelerating or slowing down the material web until the cut and the register mark coincide.