Perfected tightening screw. (Machine-translation by Google Translate, not legally binding)

摘要

Improved tightening screw, characterized in that one of those comprising a fixed arm with a clamp and a sliding arm on a common bar, the sliding arm has at its working end, a double cylindrical recess coax and of different diameter, being wider than it faces the clamp and because in these recesses respectively the pressure piston is housed, to which effect the recess and the surface of the plunger are smooth and the thrust screw to which the recessed effect and the surface is threaded, reciprocally linking to house the pressure piston internally. The cylindrical head, pointed conically, of the thrust spindle, linked reciprocally by a leaf spring in turn housed in the recess for this effect conferred on the base of the pressure piston and because the spring acting stop is accommodated by elasticity, to which effect it presents a transverse section and another curved section, optionally two transverse and one curved and optionally e engages a key required by antagonistic spring. (Machine-translation by Google Translate, not legally binding)