In a machine for forming glass articles, at least one forming mold is at least partially closed at the top by a dedicated closing element, the height position of which is continuously adjusted according to the height of the mold by a mechanical transmission that is motorized or manually operable from the outside.

In a machine for forming glass articles, at least one forming mold is at least partially closed at the top by a dedicated closing element, the height position of which is continuously adjusted according to the height of the mold by a mechanical transmission that is motorized or manually operable from the outside.

A apparatus for molding curved glass comprises: a plurality of mold units formed in a chamber for thermomolding and including a lower mold which has one or more cavities such that each of the cavities is injected with glass and an upper mold corresponding to the shape of glass to be processed and arranged on the upper side of the lower mold; and first and second processing apparatuses respectively including an inlet part for the plurality of mold units which are put, a preheating part for increasing the temperature of the glass, a molding part for molding the glass, a cooling part for cooling the molded glass and an outlet part for discharging the cooled glass, wherein the molding part can gradually decrease the increase rate of the heat applied to the plurality of mold units from the inlet part side to the cooling part side.

In a method of manufacturing a tube of quartz glass by molding a hollow cylinder having a wall thickness of at least 20 mm, the cylinder is continuously fed under rotation about a rotational axis into a heating zone at a relative feed rate V.sub.C, softened and radially expanded under the effect of a gas pressure. A tube strand is continuously formed and is withdrawn at a withdrawal rate V.sub.T. In order to mold thick-walled initial hollow cylinders of quartz glass into tubes with larger diameter, the gas pressure is used as an actuating variable of a diameter regulation for the tube outer diameter or for a geometrical correlated parameter thereof, and in a pressure build-up phase the gas pressure is gradually increased from a lower initial value to a higher final value, and that the following applies to the ratio of V.sub.C and V.sub.T:V.sub.T=V.sub.C±0.2.Math.V.sub.C.

In a method of manufacturing a tube of quartz glass by molding a hollow cylinder having a wall thickness of at least 20 mm, the cylinder is continuously fed under rotation about a rotational axis into a heating zone at a relative feed rate V.sub.C, softened and radially expanded under the effect of a gas pressure. A tube strand is continuously formed and is withdrawn at a withdrawal rate V.sub.T. In order to mold thick-walled initial hollow cylinders of quartz glass into tubes with larger diameter, the gas pressure is used as an actuating variable of a diameter regulation for the tube outer diameter or for a geometrical correlated parameter thereof, and in a pressure build-up phase the gas pressure is gradually increased from a lower initial value to a higher final value, and that the following applies to the ratio of V.sub.C and V.sub.T:V.sub.T=V.sub.C±0.2.Math.V.sub.C.

An apparatus (10) and a method of actuating a parison plunger includes transforming linear force applied to a plunger extension (54) into roto-translational motion of the plunger extension (54) via a cam path (98) between the plunger extension (54) and a piston (94).

An apparatus (10) and a method of actuating a parison plunger includes transforming linear force applied to a plunger extension (54) into roto-translational motion of the plunger extension (54) via a cam path (98) between the plunger extension (54) and a piston (94).

A glassware manufacturing system, waste handling system, and method are disclosed. The glassware manufacturing system, in accordance with one aspect of the disclosure, comprises an architectural installation having a forming floor and no basement beneath the forming floor; a glassware forming machine carried on the forming floor; a molten glass feeder configured to provide molten glass to the glassware forming machine; and a glassware manufacturing waste handling system including a sump pit in the forming floor, and a waste liquid trench substantially surrounding the glassware forming machine and flowing to the sump pit. Also, a cullet material handler and/or a molten waste glass sluice may be configured to receive molten glass and unused molten glass streams from the molten glass feeder and hot glassware rejects from the glassware forming machine.

An apparatus (10) and a method of actuating a parison plunger includes transforming linear force applied to a plunger extension (54) into roto-translational motion of the plunger extension (54) via a cam path (98) between the plunger extension (54) and a piston (94).

An apparatus (10) and a method of actuating a parison plunger includes transforming linear force applied to a plunger extension (54) into roto-translational motion of the plunger extension (54) via a cam path (98) between the plunger extension (54) and a piston (94).