Manual or mechanically powered device for extension or contraction of sheets or profiles (Machine-translation by Google Translate, not legally binding)

摘要

Improvements introduced in the object of the main Patent No. 235,873, granted on November 4, 1957, by "Manual or mechanically operated device for the extension or contraction of plates or profiles", consisting of a lower tool and an upper tool that when left subjected to a vertical compression, they imprison the piece to be deformed, producing by opposite movements of their clamping jaws the extension or contraction of said piece to be deformed, and whose jaws are provided with compression plates of synthetic material, characterized by being associated to the steel base compression plates that form a unitary assembly with them, said bases being able to be joined with the compression plates, for example by gluing or melting and by providing the steel bases with projections or with holes for the fitting of spikes, cylinders or similar that, on the one hand, fit in the plaque of synthetic material and, on the other hand, in corresponding s cavities or lodgings of the clamping jaws. (Machine-translation by Google Translate, not legally binding)