Lathe tool and toolrest
OwnerJoseph A. Kennyinventor
Life of this patent
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Abstract
A lathe tool and toolrest assembly is disclosed in which a cutting blade is attached across one end of a blade mounting shaft, which shaft may be rotated and/or slid lengthways with respect to the sleeve portion of a toolrest comprising a T-bar. A handle is attached to the other end of the blade mounting shaft for manipulating the tool. The tool may be used to remove a cylindrical core from a workpiece mounted on the lathe, or successively smaller cores so as to produce a set of nesting bowls. A set of blade attachments is also provided to hollow out a cylindrical core through a narrow opening in a workpiece. A frusto-conical core may be removed from a workpiece in conjunction with a double T-bar toolrest which serves as a universal joint when manipulating the tool.
Claims9
A tool for use on a wood-turning lathe comprising cutting means and a mounting member therefor, slidable within a toolrest, wherein the cutting means is secured across one end of the mounted member, and adapted for lateral displacement in a plane transverse to the turning axis of the lathe when the tool is inserted in a previously formed aperture or annular groove in a workpiece mounted on and lathe, and means for securing a handle across the opposite end of the mounting member whereby a person using the tool can manually steady the tool within the troolrest, such that a cylindrical core may be removed from the workpiece.
A method of turning a set of nesting bowls from a single workpiece mounted on a conventional wood-turning spindle lathe comprising the steps of:
- a) forming a first circular groove in the workpiece,
- b) inserting an arcuate cutting blade in said groove, disposed transverse to the turning axis of the lathe,
- c) rotating in a clockwise direction by applying a manual force to a handle fixed to the blade the arcuate blade so as to remove a cylindrical core,
- d) forming a second circular groove in the remaining workpiece,
- e) inserting a larger arcuate blade in said groove, disposed transverse to the turning axis of the lathe,
- f) rotating in a clockwise direction by applying a manual force to a handle fixed to the blade the larger arcuate blade so as to remove a bowl from the workpiece having cylindrical side walls, and
- g) removing the remaining workpiece in the form of a larger bowl having cylindrical side walls from the lathe.
A method of removing a cylindrical core from a workpiece mounted on a lathe, comprising the steps of
- a) cutting a narrow opening in the centre of the workpiece,
- b) inserting a blade through said opening disposed transverse to the turning axis of the lathe and rotating said workpiece to widen the base of the opening,
- c) replacing said blade in step b) with successively longer blades so as to deepen and widen the hollow cut by said blades through said narrow opening.
A tool for use on a wood-turning lathe comprising cutting means and a mounting member therefor slidable within a toolrest, wherein
- said toolrest comprises a steam adapted to be fixed to the lathe, and a sleeve portion transverse to the stem,
- means are provided for a universal joint connection disposed between the toolrest stem and the mounting member,
- the mounting member having secured across one end thereof cutting means, and across the opposite end a handle,
- whereby the cutting means is adapted for lateral displacement in a plane transverse to the turning axis of the lathe by means of manual manipulation to the tool by a user grasping the handle when the tool is inserted in a previously formed aperture or groove in a workpiece mounted on the lathe, such that a cylindrical or a frusto-conical core may be removed from the workpiece.
Dependencies are inferred from the claim text.