4. Cutting by use of rotating axially moving tool
  5. Means to drive tool
  6. Including means to move tool along tool-axis

Robert J. Petroff

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Lead screw tapping unit

Cutting by use of rotating axially moving tool – With randomly-actuated stopping means – Responsive to condition of tool or tool-drive
Patent

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Machine tool having quill control means

Cutting by use of rotating axially moving tool – Means to drive tool – Including means to move tool along tool-axis
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