Abstract: A power-operated chuck for a tool spindle of a machine tool includes a chuck body and at least one chucking device which is guided in a radial guide of the chuck body and which, for exerting a desired chucking force on a workpiece chucked in the chuck, can be adjusted relative to the chuck body by a chucking-force generator via at least one drive member arranged in the chuck body. At least one chucking device has a measuring device for measuring a chucking force exerted by the chucking device on the workpiece chucked in the chuck and an evaluating device for evaluating the chucking force measured by the measuring device.

Abstract: A printer cassette device is arranged to be removably mounted to or inserted into a printing device of a weighing scale. The printer cassette device comprises a rotatable locking mechanism for rotational engagement with the printing device.

Abstract: A synchronized gripping mechanism is provided which includes coupled slider-crank mechanisms. The coupled mechanisms each include a sliding grip and an intermediate link connected by a pivotal connector. A coupler link is provided on a stationary pivot and which couples and synchronizes the two slider-crank mechanisms. Overload protection structure is provided to prevent damaging the links if one of the sliding grips encounters an off-center specimen.