METHOD AND BOOSTERDEVICE FOR POSITIONNING OF ZERO-SETTING OF MOLTEN GLASS GOB DISTRIBUTOR'S SHAFT

摘要

A method of accurately circumferentially orienting the output shaft of each of a plurality of oscillating gob distribution drive units (S) with respect to one another and with respect to a support device (T) used to support a plurality of gob chutes. A fixture (10) having a slot (22) extending therethrough is secured to the output shaft of each of the drive units and in a fixed circular position relative thereto. The positions of the output shafts are adjusted to bring the slots into alignment with one another by inserting the shank portion (42) of a zeroing bar (40) into the slots of the fixtures, and the position of the support device is circumferentially adjusted to bring a recess therein into a predetermined circular orientation with respect to a step end portion (46) of the zeroing bar. The support devices are then vertically positioned with respect to one another by positioning the position bars (64) of a step fixture (60) into recesses (26) of the fixtures, the step fixture having portions that are adapted to engage the support devices when the support devices are properly vertically positioned.