Fluid supplying and discharging apparatus for shuttleless weaving loom

摘要

In a weaving loom of the shuttleless type having a fluid discharge nozzle adapted to shoot a jet stream of fluid entraining a pick of weft yarn for inserting the weft yarn into the weaving shed of the loom, a fluid supplying and discharging apparatus comprising first valve means alternately opened in synchronism with the weaving cycles of the loom, second valve means for providing communication between the first valve means and a source of fluid under pressure when the loom is in operation, third valve means to be manually operated to open to provide communication between the fluid source and the nozzle through a passageway by-passing the second valve means which is closed when the loom is at rest, and flow restricting means for reducing the fluid pressure to be supplied to the nozzle through the third valve means.