| 摘要 |
<p>An automatic safety device for a hulling machine comprising a housing, a fixed hulling roll and a movable hulling roll forming a pair rotatably mounted parallel to each other in the housing, means for driving the two hulling rolls and means for forcing the movable hulling roll to move toward the fixed hulling roll. Each hulling roll has fitted thereover a metallic annular member and a resilient annular member in the indicated order. The automatic safety device includes detecting means for detecting that at least one of the resilient annular members of the hulling rolls has reached a predetermined wear limit radius, and a safety control electric circuit connected to said detecting means and including warning means and/or means for interrupting the operation of the means for driving the hulling rolls.</p> |
