Press, has additional upper portion which cooperates with threaded spindle units, such that portion is moved in direction opposite to direction of motion of another upper portion

摘要

The press has a base portion (1) and an upper portion (2a) that is vertically displaced relative to the base portion by threaded spindle units (4a, 4b). The spindle units connect the upper and base portions together. An additional upper portion (2b) is provided, which cooperates with the spindle units in such a manner, that the portion (2b) is moved in a direction opposite to the direction of the motion of the portion (2a).