Abstract: A coupling member for a quick-fitting pipe coupling comprising two separate fluid passages communicating each through a different port formed in the sliding socket with two series of passages formed separately in the body and the locking member, thus affording the simultaneous coupling of a double fluid circuit by using a single coupling member.

Abstract: The invention relates to a snap-fitting pipe connecting device comprising a body adapted to be secured to the frame structure of a machine, a connecting member proper and a lock bolt, a fluid passage formed in the connecting member having a portion at right angles to the axis of said member. The body of the device constitutes a connecting or distributor box adapted to supply several different fluids. Each connecting member and the bore receiving same in said body comprise specific assembly means inherent thereto to prevent their accidental operation in another bore intended for other connecting members, and vice versa.

Abstract: The invention relates to a pneumatic device for controlling the termination of an operation on a workpiece by means of the spindle of a machine. Said device comprises, around the front or tool end of the spindle, a sleeve provided with a front seal adapted, at the end of the operation, to engage the workpiece or a jig clamping same, so as to form with said workpiece or jig a closed, sealed space supplied with compressed air, an air exhaust port opening into said space and being adapted to be connected to a pneumatic receiver for controlling the end of the operation.