Plunger foot assembly for a glassware forming machine

Glass manufacturing – Press molding machine – With means to adjust plunger stroke

Reexamination Certificate

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Details

C065S362000

Reexamination Certificate

active

07958751

ABSTRACT:
A plunger foot assembly includes a preassembled gearbox for mounting on a section box base plate of a glassware forming machine. The preassembled gearbox has an input and an output gear with an internally threaded central opening. A hollow externally threaded shaft is threadably coupled to and extends from the internally threaded opening of the output gear. A plunger support is mounted on the hollow externally threaded shaft such that rotation of the output gear of the gearbox raises and lowers the plunger support. The plunger support has an upper face for mounting at least one plunger with air ports of the plunger opening at the face of the support. The plunger support also has air passages for feeding plunger up, plunger down and plunger cooling air to the air ports of a plunger mounted on the plunger support, and a cooling air exhaust passage for feeding cooling air exhaust from the plunger mounted on the support to the hollow interior of the externally threaded shaft. At least one telescoping tube assembly has a base for mounting on the section box base plate, and telescoping tubes with inlet ports for receiving plunger up, plunger down and plunger cooling air and outlets coupled to the air passages in the plunger support.

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patent: 1072179 (1967-06-01), None
patent: 2115803 (1983-09-01), None

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