| 摘要 |
An improved nozzle arrangement having facilities for reducing turbulence in the flow of hydraulic pressure pulses during the introduction of a weft-propelling fluid to a pressure chamber of such arrangement is described. An annular insert is disposed coaxially within the outer nozzle housing exhibiting a liquid-introducing radial opening, the insert having a peripheral recess in alignment with the radial opening in the housing. A plurality of axial bores are disposed symmetrically around the circumference of the insert, and extend forwardly from the front wall of the peripheral groove to communicate with the pressure chamber defined between the front wall of the insert and the front flange of a nozzle member, such nozzle member having a central tubular element extending rearwardly from the flange and into the hollow interior of the insert. The propelling fluid is loaded into the pressure chamber via the radial opening, the peripheral groove and the axial bores, and communicates with the weft-propelling interior of the nozzle via an intermittently opened resiliently biased reciprocable valve element.
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