Abstract: A device for measuring angles, primarily for measuring bending angles attained by press brakes and similar when a piece to be worked is bent between upper and lower pressing tools (1), includes an oscillating device (6) that detects the angled position of the piece to be worked. The detection device comprises a rocker (6) that is connected directly to a detecting mechanism (12) such as, for example, a rotating potentiometer. The rocker is arranged to pivot around an axis (5) that runs parallel with the longitudinal axis of the lower pressing tool. In its turn, the axis shaft (5) is supported by a supporting and displacement device (3, 4) that can displace the axle, and thereby the rocker, towards and away from the piece to be worked at an oblique angle to the relative direction of movement of the upper and lower pressing tools.

Abstract: This invention relates to an arrangement at lower tools for edging presses and the like where a pair of jaws or pads are displaceable in at least the one direction by means of a system including obliquely arranged surfaces. The novelty lies in that there are arranged at a first sliding face of a sliding plate, a number of slots or recess (3) in pairs and positioned in opposing directions on each side of a central plane of the tool and at second inverted sliding faces each connected to a jaw or pad means (12) mirror inverted slots (8) having greater length than the former slots and in that in the shorter slots there are arranged keys having a depth adapted to the slots so that a protruding portion of each key projects into each of the elongated slots.