| 摘要 |
A locking mechanism for securing the tray of a scale during the transporting of flat articles, such as envelopes, onto and across the tray of the scale. When a flat has been placed in a position for weighing, the conveying mechanism is put into an inoperative mode and causes the locking mechanism to release the tray. After the article is weighed, the conveying mechanism is placed into the operating mode and acts upon the locking mechanism to cause it to once more secure the tray.
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