Parison forming and plungers for use therein.

摘要

A plunger assembly for a glassware forming machine for use in forming parisons comprises a metal plunger with a small chamber at the nose portion of the plunger into which water is supplied when the plunger is in use, the water passing out through a pattern of small holes in the nose portion to provide a vapour barrier between the plunger and the hot glass. The plunger has an internal recess and is cooled by air supplied into the recess.