| 摘要 |
This disclosure depicts shadow mask storage apparatus for use in the manufacture of television picture tubes and, specifically, for use with screening apparatus for screening picture tube faceplates. The apparatus has a mechanical memory for holding and cataloging shadow masks uniquely paired with the faceplates while the faceplates are being screened. The apparatus includes a plurality of mask holders which follow a cycle of being bottom loaded upward onto a stack of ascending mask holders, ratcheted upwards, rotated to a stack of descending mask holders, ratcheted downward, removed downward from the bottom of the stack of descending mask holders, rotated to a predetermined load/unload position, and rotated to the bottom of the stack of ascending mask holders. The apparatus insures in a foolproof way that a one-to-one relationship is retained between the faceplates and the shadow masks when the faceplates are separated from the shadow masks and insures that excessive handling of and the possibility of damage to the shadow masks is prevented.
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