Universal lower stem mold for manufacturing a molded glass stem

Details Universal lower stem mold for manufacturing a molded glass stem Universal lower stem mold for manufacturing a molded glass stem

1988-08-11

1989-08-22

Kellogg, Arthur

Glass manufacturing

Electronic envelope header, terminal, or stem making means

With means inserting wire into glass

65 5925, 65 5927, 65 5928, 65 597, 65140, C03B 1114, C03C 2900

Patent

active

048592269

ABSTRACT:
An apparatus for manufacturing a glass stem for an electron tube comprises a first (upper) stem mold assembly and an improved second (lower) stem mold assembly. The improved second stem mold assembly includes a universal second (lower) stem mold having a plurality of lead-in conductor receiving openings formed therethrough. At least one removable stem mold plug is disposed and retained within one of the openings.

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patent: 2340879 (1944-02-01), Horn
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patent: 3201216 (1965-08-01), Handmann
patent: 4767436 (1988-08-01), Hale
patent: 4801320 (1989-01-01), Prost
patent: 4813991 (1989-03-01), Hale
patent: 4813992 (1989-03-01), Hale
patent: 4824459 (1989-04-01), Hale

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