Angular tool and holding block
AssigneeKeystone Engineering & Manufacturing Corporation
InventorWinchester E. Latham
Life of this patent
Estimating the term…
Abstract
A cutting tool holder, a cutting bit, and a retainer maintaining the cutting bit at a prescribed position relative to the tool holder. The cutting bit is received in a slot located in a first lateral surface that extends through the top surface. The retainer is received in an opening included in the first lateral surface that intercepts the slot. The retainer includes a planar tapered surface that contacts an upwardly and laterally facing oblique surface on a lower end of the cutting bit to hold the lower end of the cutting tool in contact with a lower surface of the slot.
Claims17
A cutting tool comprising:
- a tool holder including a base, lateral surfaces extending upward from the base to an uppermost edge of each lateral surface, a top surface connecting uppermost edges of the lateral surfaces, a slot in a first of the lateral surfaces extending through the top surface, and an opening in the first lateral surface intercepting the slot,
- a retainer having a perimeter surface dimensioned to be received in the opening in the tool holder first lateral surface through movement of the retainer relative to the tool holder along a line of action, the retainer including a planar tapered surface inclined with respect to the line of action and intersecting the perimeter surface, and
- a cutting bit including a generally rectangular body portion dimensioned to be received in the slot at a fixed orientation, an upper end projecting above the tool holder top surface and including a cutting surface, and a lower planar tapered portion obliquely inclined to face laterally and upwardly and positioned for contact by the retainer planar tapered surface so that a downward and laterally inward force can be applied to the cutting bit by the retainer to maintain the cutting bit in the tool holder slot.
A rotary driven cutter having a surface curved about a rotation axis of the cutter and a plurality of cutting tools mounted on the curved surface, each of the cutting tools comprising:
- a tool holder including a base fixed to said curved surface, lateral surfaces extending radially outward from the base to an outermost edge of each lateral surface, a crown surface connecting outermost edges of the lateral surfaces, a slot in a first of the lateral surfaces extending through the crown surface, and an opening in the first lateral surface intercepting the slot,
- a retainer having a perimeter surface dimensioned to be received in the opening in the tool holder first lateral surface through movement of the retainer relative to the tool holder along a line of action, the retainer including a planar tapered surface inclined with respect to the line of action and intersecting the perimeter surface, and
- a cutting bit including an angular body portion dimensioned to be received in the slot at a fixed orientation, an upper end projecting above the tool holder crown surface and including a cutting surface, and a lower planar tapered portion obliquely inclined to face laterally and radially outwardly and positioned for contact by the retainer planar tapered surface so that a radially and laterally inward force can be applied to the cutting bit by the retainer to maintain the cutting bit in the tool holder slot.
Dependencies are inferred from the claim text.