Glass molding apparatus including adjustable cooling nozzles and methods of using the same

A method of cooling molten glass to form a glass article, the method comprising:

• flowing molten glass into a cavity defined by a cooling surface of a mold shell, the cooling surface comprising a first zone and a second zone such that the first zone and the second zone are thermally isolated from one another;
• supplying fluid to an adjustable nozzle system comprising a mold-facing surface having a plurality of apertures, each of the plurality of apertures sized to receive one of a plurality of nozzles;
• and
• each of the plurality of nozzles coupled to and extending through a corresponding one of the plurality of apertures to direct a first stream of fluid onto the cooling surface of the mold shell to impinge against the first zone to cause a first cooling intensity and to direct a second stream of fluid to impinge against the second zone to cause a second cooling intensity, the first cooling intensity and the second cooling intensity drawing heat away from the molten glass, thereby cooling the molten glass to form a glass article, wherein the second cooling intensity is different from the first cooling intensity.