US PATENT SUBCLASS 65 / 192
.~.~ Air injection means extending through bath

Current as of: June, 1999
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65 /   HD   GLASS MANUFACTURING

187  DF  MEANS DRAWING TUBE OR ROD STOCK FROM BATH {1}
188  DF  .~ Drawing vertically upward {4}
192.~.~ Air injection means extending through bath

DEFINITION

Classification: 65/192

(under subclass 188) Apparatus wherein an internal air supply means for a tube being formed passes through the molten glass source into the lower portion of the tube.