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Useful of roscar, essentially characterized to be constituted on the basis of a cabezal divided in two sections that presents in one of his sides a seat for a piece of compression provided with means of anchoring on the own head that, in addition, forms with that piece compresora a communicating socket with a threaded core that rotates inside said head, with the particularity that the aforementioned socket is substantially receiving a tool whose line of attack consists of an extreme recess that constitutes a peak of threading, simultaneously behaving in the sector that penetrates in that socket a gear for the threaded core, determining the displacement of the tool along the head fitting by means of the drive of that threaded core. (Machine-translation by Google Translate, not legally binding)
Improvements in the construction of manual machines rectifier-sharpeners of flat surfaces. (Machine-translation by Google Translate, not legally binding)