Abstract: A computer-implemented method of automatically preserving digital documents stored in a digital preservation system. The method comprises receiving an indication of a change to at least one of configuration data or tools of the digital preservation system, processing the indication to determine at least one affected asset which is stored by the digital preservation system and is affected by the change, determining at least one action to be performed by a tool of the preservation system on the at least one affected asset.

Abstract: An expandable wedge assembly which releasably secures a cutting blade or wafer like indexable insert in a pocket of a cutting tool. The wedge assembly includes flexible legs which expand or flex outwardly to secure the insert against a wall of the pocket and which unexpand or unflex to release the insert for indexing or replacement. Preferably, a screw and ball means movable in a bore in the wedge effect the flexing and unflexing of the wedge. A locater assembly for positioning the insert in the pocket also can be provided. Preferably, the structure and operation of the locator is similar to the structure and operation of the wedge.

Abstract: A metal cutting tool holder and adjusting mechanism having a rotational drive; a housing and cam mounted therein for rotation by the rotational drive; a cam follower mounted on the cam for axial motion; a wedge block axially slidably contained in the housing and adapted to be moved axially by the cam follower; the wedge block having a tapered transverse surface; and a tool holder block transversely slidably contained in the housing and adjacent the wedge block; the tool holder block having a tapered surface thereon slidably engaging the tapered surface of the wedge block but which is a reverse taper compared to the taper of the wedge block, so that the rotation of the motor drives the wedge block axially, and the tapered surfaces cause the tool holder block to move in a radial direction of the wedge block. In alternative embodiments, unidirectional controls cause the rotational drive to move the wedge block in the opposite direction. The controls include a comparative voltage electrical control system.