A TOOL PROVIDED WITH A MARKING DEVICE

摘要

A tool is provided with two jaws (16, 17) which are movable between an open position and a closed position, means (19, 20, 22) for transmitting movement to the jaws, and a marking device (3-8, 10) for the indication of a completed jaw movement and/or the prevention of a premature interruption of an initiated jaw movement. The marking device includes a cam (3) and a cam follower (7) which are carried by an associated movement transmitting means or an associated jaw. The cam follower (7) projects outwardly of and is mounted for movement along a U-shaped or V-shaped slot (10) which is arranged in an associated movement transmitting means or jaw adjacent the cam and the legs of which extend obliquely away from the cam (3) and the base-part of which is at least partially covered by the cam when the jaws are in a position between the open position and the closed position. The cam surface (6) is arcuate and smooth or toothed. The means or jaw carrying the cam (3) can be pivoted about a pivot centre (23) which coincides with the centre of the arc.