ES193642U - Pneumatic control for the operation of rotating shafts. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Pneumatic control for the drive of rotating shafts, of the type of the compounds by a cylindrical chamber closed at its ends by respective caps and provided in its interior two twin pistons mutually facing and acting, by means of a rack, on a central pinion gear that extending axially to the outside allows coupling with the axis to be governed, which is characterized by the fact that the said pistons are joined with corresponding tubes that cross them transversely by their respective area of the rack, which tubes, in their alternate longitudinal displacement accompanied by corresponding piston, slide at their ends inside respective cavities existing precisely for that purpose on the inner side of the caps, concurring the particular circumstance that two of said cavities of one of the tubes communicate, through appropriate internal conduits with the respective recin coughs located between each of the plungers and the immediate lid, while the other tube has an intermediate hole that goes precisely to open, directly or indirectly, to the central space located between the two repeated plungers, so that the penetration of air by one or the other of the two existing openings for that purpose in one of the covers and which are coincident with a respective cavity, gives rise to the approach or the mutual distance of the pistons, and consequently to the whistle in one or the other direction of the toothed pinion and its external prolongation, being able to come interposed, between the extreme faces of each of the two pistons and the respective cover that is related, a plurality of springs mounted according to technique designed to ensure stability or adoption of maximum approach between those moving elements when ceasing any (Machine-translation by Google Translate, not legally binding)