(under subclass 164) Subject matter wherein the apparatus is provided with means capable of effecting axial movement between a die-head and stock material to thereby relieve the strain resulting from a feeding operation.
SEE OR SEARCH CLASS
408, Cutting by Use of Rotating Axially Moving Tool,
62+, and 129+ for drilling machines which feed the work or tool or both relative to one another along the axis of relative rotation of tool and work.
