| 摘要 |
Edge treating belt-grinder units are provided to produce, in sequences of operation, a desired ground surface on, for example, the lower corner, the upper corner and the vertical surface of a sheet or plate of glass. The glass is moved along a definite path and the abrasive belts are mounted for movement toward and away from the path. Monitoring elements act to control the grinder units in accordance with detected position and contour changes of the glass sheets.
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