Importance

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Abstract

In an apparatus for stretching out a rectangular gauze material or the like cloth portion in a printing frame with tensioning devices which are arranged at the sides thereof and in which the cloth portion is fixed by a respective clamping mouth comprising clamping jaws (32, 36) which are movable relative to each other and which can be applied against each other on the closing travel of a closing lever under a pressing pressure and then the cloth portion is tensioned by a change in position of the clamping mouth units, caused by a piston/cylinder unit for a flow medium, in the pulling direction, when the clamping jaws (32, 36) are brought together the closing travel which is determined by the closing lever (50) is followed by a further closing travel and same is controlled by a piston rod. In addition the piston rod is to be part of the piston/cylinder unit for the pulling movement of the stretching device (16). Associated with the piston in the cylinder (20) are an open position of the clamping mouth (18), which is near the clamping jaws (32, 36), a central position with closed clamping jaws, and an adjoining stroke path for the stretching operation.

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First Claim