Abstract:
This invention relates to a nozzle structure for use in a pressurizer machine in glass forming. The pressurizer machine operates to insert a pipe or nozzle into the opening of a glass ribbon and newly formed glass article supported on an apertured orifice plate of a ribbon glass forming machine. Just prior to crack-off of the article from the ribbon in or near the aperture of the plate, the nozzle is inserted below the crack-off line of the glass ribbon and air is emitted in the article to flow out of the mouth opening. Any chips or loose particles of glass as may result at crack-off are carried by the air flow out of the mouth and away from the article. The nozzle structure includes: (1) a frustro conical side wall for baffling or directing air flow upwardly and radially, (2) regulating volume and pressure by the nozzle openings in proportioning their area to the supply pipe, (3) inclining these openings in a 30*-60* inclination to the axis of the nozzle in directing air emission, and (4) providing a carrier-actuator for moving the nozzle-a pressurizer head assembly-whereby the nozzle is moved into the article below the orifice plate elevation in applying the air in the article.