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US 6,004,082 AGranted
Tenon cutter
AssigneeLee Valley Tools Ltd.
InventorsPaul V. Ruhlmann, Abdul Aziz
Life of this patent
Estimating the term…
Abstract
A rotating tenon cutter having a wooden or aluminum body and a curved cutter blade positioned adjacent to a throat having a bell mouth with a matching curve. A cylindrical tenon is formed with an attractive shoulder that curves from the tenon to the largest cross-sectional dimension of the work piece on the same radius as the cutter blade. A bubble level vial in the body indicates when the axis of rotation (and axis of the tenon to be formed) is horizontal. The cutter blade is repositionable on the body so that the bevel is appropriately presented for sharpening using a drum sander while the face or a flat side of the tenon cutter body rests on a drill press table.
Claims25
Apparatus for forming a cylindrical section on a wooden work piece, comprising:
- a body having an axis of rotation, a face penetrated by a cylindrical bore centered on the axis of rotation and a bell-shaped mouth transitioning from the face to the bore,
- means for rotating the body and work piece relative to each other about the axis of rotation,
- a cutter blade having a bevel, and
- means for attaching the cutter blade to the body in a first, cutting position adjacent to the bell mouth and in a second, sharpening position presenting the bevel for contact with a cylindrical abrasive surface.
1 more element
A tenon cutter comprising:
- a body having a face penetrated by a cylindrical bore centered on an axis of rotation and a bell-shaped mouth transitioning from the bore to the face, the surface of the mouth defined by rotating a curve about the axis of rotation,
- a shank for rotating the body about the axis of rotation,
- for attachment to the body, a cutter blade having a cutting arris substantially matching the curve,
- means for positioning the cutting blade in a first position with the arris adjacent to the bell mouth and adjusting the blade position tangentially relative to the axis of rotation of the tenon cutter, and
- additional, separate means for adjusting the position of the cutter blade by moving at least a portion of the blade generally radially relative to the axis of rotation of the tenon cutter.
2 more elements
A tenon cutter comprising:
- a body having a face penetrated by a cylindrical bore centered on an axis of rotation and a bell-shaped mouth transitioning from the bore to the face, the surface of the mouth defined by rotating a curve about the axis of rotation,
- a shank for rotating the body about the axis of rotation,
- for attachment to the body, a cutter blade having a cutting arris substantially matching the curve,
- means for adjustably positioning the cutting blade in a first position with the arris adjacent to the bell mouth, and
- means for positioning the cutter on the body in a second position for sharpening the cutter using a rotating cylindrical abrasive surface.
2 more elements
A tenon cutter comprising:
- a body having a face penetrated by a cylindrical bore centered on an axis of rotation and a bell-shaped mouth transitioning from the bore to the face, the surface of the mouth defined by rotating a curve about the axis of rotation,
- a shank for rotating the body about the axis of rotation,
- for attachment to the body, a cutter blade having a cutting arris substantially matching the curve, and
- means for adjustably positioning the cutting blade in a first position with the arris adjacent to the bell mouth, wherein the means for adjusting comprises a shim for positioning between the cutter blade and the body.
1 more element
A tenon cutter comprising:
- a body having a face penetrated by a cylindrical bore centered on an axis of rotation and a bell-shaped mouth transitioning from the bore to the face, the surface of the mouth defined by rotating a curve about the axis of rotation,
- a shank for rotating the body about the axis of rotation,
- for attachment to the body, a cutter blade having a cutting arris substantially matching the curve, wherein the cutter blade may be sharpened by repositioning the cutter on the body while the body rests on a surface positioned normal to the axis of rotation of a cylindrical abrasive surface, and
- means for adjustably positioning the cutting blade in a first position with the arris adjacent to the bell mouth.
1 more element
A tenon cutter comprising:
- an anodized aluminum body having a face penetrated by a cylindrical, blind bore centered on an axis of rotation and a bell-shaped mouth transitioning from the bore to the face, the surface of the mouth defined by rotating an approximately 90 degree segment of a circle having a radius of about 0.75 inch about the axis of rotation,
- a shank attached to the body coaxial with the axis of rotation for rotating the body about the axis of rotation using an electric drill motor,
- for attachment to the body, a semi-cylindrical cutter blade penetrated by at least one hole and having a concave side and a cutting arris formed by a bevel on the concave side of the blade, the arris having a radius substantially matching the circle radius, and
- a screw for passing through the hole in the blade and into the body for positioning the cutting blade in a first, cutting position with the arris adjacent to the bell mouth and in a second, sharpening position for contact with an abrasive surface,
- a level secured in the body to indicate when the axis of rotation is horizontal.
2 more elements
A method for forming a cylindrical tenon having a cylindrical axis on a wooden work piece having a longitudinal axis, with the cylindrical axis of the tenon offset from the work piece longitudinal axis, comprising the steps of:
- a) securing the work piece with the longitudinal axis offset from horizontal so that the cylindrical axis of the desired tenon to be formed on the work piece is horizontal;
- b) orienting a tenon cutter having a means for accurately determining orientation of the tenon cutter relative to horizontal in a position so that the tenon cutter is horizontal;
- c) rotating the tenon cutter against the work piece to remove material therefrom and thereby form a cylindrical tenon while maintaining the orientation of the rotational axis of the tenon cutter horizontal.
Dependencies are inferred from the claim text.