Abstract: The present invention is directed to a shearing machine which is provided with two pairs of upper and lower blades in a manner such that the upper and lower blades of one pair are connected to the upper and lower blades, respectively, of the other pair at right angles to shear right-angled blanks out of sheet-like workpieces. The two upper blades are connected with each other at a right angle on a ram member in a manner such that their shearing edges are originally inclined downward from their intersecting point to their respective free ends. The ram member carrying the upper blades is connected to the machine frame by means of a pivot means which is horizontally disposed higher than the top level of the lower blades. Also, one of the two pairs of upper and lower blades are located outside of the vertical plane of the outer side of the machine frame together with related parts.

Abstract: A shearing machine is disclosed which includes a first lower blade and a second lower blade positioned at right angles with respect to each other. A ram is provided which is swingably movable upwardly and downwardly with respect to the lower blades, the ram including a first upper blade and a second upper blade positioned at right angles with respect to each other. A drive drives the ram upward and downward with respect to the lower blades and connecting rods couple the drive to the ram. An adjusting mechanism is coupled to the ram and the connecting rods for adjusting the lower limit of the stroke of the ram. Furthermore, the machine includes adjustors for adjusting the horizontal clearance between the upper and lower blades when the ram is in its lowered position.