Drilling head with jointly or individually radially adjustable tools
OwnerEmile Pfalzgrafinventor
Life of this patent
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Abstract
Drilling head comprising a body for fastening in a mounting support. The body carries a pair of radially movable tools. A casing is mounted for axial displacement along a bore in the body, the casing being rotatable relative to the body about the axis of the bore. Structure is provided for rotating the casing in the bore and for moving the casing axially along the bore. The casing supports pins which are engageable with both tools of the pair of radially movable tools and which in one axial position of the casing along the bore move both tools in opposite axial directions upon rotation of the casing and which in another axial position of the casing along the bore contact only one tool to move only that one tool radially relative to the other tool.
Claims13
Drilling head comprising a body for fastening in a mounting support, means for mounting on said body a pair of radially movable tools, a casing mounted for axial displacement along a bore in said body, said casing being rotatable relative to said body about the axis of said bore, means for rotating said casing in said bore, means for moving said casing axially along said bore, said casing carrying means which are engageable with both tools of said pair of radially movable tools and which in one axial position of the casing along the bore move both tools in opposite axial directions upon rotation of the casing and which in another axial position of the casing along the bore contact only one tool to move said one tool radially relative to the other said tool upon rotation of the casing.
Dependencies are inferred from the claim text.