Device for splicing textile yarns with the aid of compressed air

A device for splicing textile yarns by admixing and intermingling their component fibers with the aid of compressed air, which comprises a blending chamber having a substantially V-shaped cross-sectional outline and having a port opening centrally through its bottom wall and connected through a cutoff valve to a source of compressed air, a lid for closing said chamber frontally means for shifting said lid from an inoperative position away of said chamber to a position of closure of said chamber and vice versa, means synchronized with said lid-shifting means to open said valve as the lid is in its closed position, and members for positioning and introducing the yarns to be spliced in the blending chamber and for severing the free ends thereof, said members being controllable synchronously with the motion of said lid from its inoperative position to the position of closure of the blending chamber, the device being characterized in that it is comprised of a pneumatic control unit having an air intake duct connected to a source of compressed air and an air outlet duct in direct communication with said port opening into the blending chamber, said air intake duct communicating with the outlet duct through a channel in which said cutoff valve controllable by said means synchronized with said lid-shifting means is inserted serially with a second cutoff member, there being formed in the pneumatic control unit a timing reservoir connected through a passageway to a point, downstream of said second cutoff members, of said communication channel, said reservoir having at least one wall shiftable against the bias of resilient means and carrying said second cutoff member.