ES195058U - Automatic mechanism for pneumatically operated pistopetters or engineers. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Automatic mechanism for pneumatically driven nailers or staple guns, for repeatedly expelling staples according to an adjustable rhythm, comprising a cylinder in the pistol body and in the zone for ejecting the nail, means for actuating said pistol grip, an intake conduit for the compressed air to said cylinder and an outlet conduit therefor from said cylinder, a piston slidably mounted in said cylinder and driven by compressed air to eject staples, a valve having a closing member with a larger base and a minor base arranged to control the air flow in and out of the cylinder, characterized in that it also comprises a substantially annular space disposed between the pistol body and the cylinder and in communication with the latter by means of at least two openings separated from each other. By a distance substantially equal to the axial dimension of the plunger; a tubular guide element substantially coaxial with respect to the valve; a shutter member movable in such tubular element and provided with a larger base and a smaller base; a first chamber in communication with the annular space defined between said tubular element and major base of the sealing member, and a second space that is defined between said tabular element, the smaller base of the sealing member and the larger base of the closing member of the valve ; an intake duct for the compressed air in said second chamber, controlled by the pistol actuation means and susceptible to interception by the sealing member; openings in said second chamber, susceptible to interception by said closing member of the valve and communicating with a compressed air outlet duct, susceptible to interception by said sealing member, and regulation means for the movement of the latter. (Machine-translation by Google Translate, not legally binding)