| 摘要 |
<p>In the manufacture of glassware a preliminary stage is making gobs of molten glass. The gobs are formed by forcing the glass through an orifice in the floor of a trough containing molten glass. The glass is forced by a plunger mounted in a plunger chuck assembly situated above the orifice. The plunger chuck assembly comprises a mounting plate (1) from which a sleeve (12) projects. A plunger holder (14) is mounted for reciprocal movement in sleeve (12). The holder (14) is biased in one direction along sleeve (12), and has means for adjusting the longitudinal position of the holder (14) relative to the mounting plate (1). A plunger chuck (28) is provided on the end remote from mounting plate (1) into which a plunger (38) is mounted.</p> |
