# US 4,395,168 A · Multiple cutter rotary tool > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 4,395,168 A - Document ID: US4395168A - Status: Granted - Kind: A - Application number: 06/218,397 - Filed: 1980-12-19 - Granted: 1983-07-26 - Earliest claimed: 1980-12-19 - Inventors: Frank Vicari - Web page: https://patentgrep.com/patent/US4395168A ## CPC - B23B 51/05: for cutting discs from sheet - B23C 5/2239: {with cutting inserts clamped by a clamping member acting almost perpendicular on the cutting face} - Y10T 407/191: Plural simultaneously usable separable tools in common seat or common clamp actuator for plural simultaneously usable tools - Y10T 407/1926: Plural simultaneously usable separable tools in common seat or common clamp actuator for plural simultaneously usable tools - Y10T 408/31: Convertible cutting means - Y10T 408/33: Utilizing common cutting Tool - Y10T 408/352: including rotating cutter other than rotating, axially moving Tool - Y10T 408/906: Axially spaced - B23B: TURNING; BORING (arrangements for copying or controlling B23Q) - B23C: MILLING (broaching B23D; broach-milling in making gears B23F; arrangement for copying or controlling B23Q) - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A tool for use with a rotary drive is provided with a number of differently formed slots therein to receive different cutting blades in various orientations. The tool is adaptable for cutting in a radial direction and in an axial direction and can accommodate molding head cutters as well as standard 1/4-inch tool steel bits in various combinations with spacer bars to provide different cutting profiles in a radial direction and to permit surface boring and milling in the axial direction. ## Claims ### Claim 1 A tool for use with a rotary drive for cutting a workpiece, comprising: a disc-shaped body having centrally located means for mounting to the rotary drive and defining an axis of rotation; a first plurality of elongate (apertures) slots formed substantially radially in said disc-shaped body and passing through from one side to the other side of said disc-shaped body and being adapted for receiving a first tool bit in each of said first plurality of slots; each of said first plurality of slots being elongated to have a length substantially greater than a width of said first tool bit to permit said first tool bit to be positioned at preselected points along the length of said first elongate slot; a second plurality of slots formed in the rim of the said disc-shaped body pointing generally ouwardly from the center of said disc-shaped body and being adapted for receiving a second tool bit in each slot; and a third plurality of slots formed in one side of said body and the rim of said disc-shaped body and not extending through said body and pointing generally outwardly from the center of said body and being adapted for receiving at least one of the first tool bits in each slot, whereby upon said disc-shaped body being mounted to the rotary drive and a first tool bit being arranged in each of said first plurality of slots the tool is adapted for axial cutting and upon a second tool bit being arranged in each of said second plurality of slots, the tool is adapted for radial cutting and upon at least one of the first tool bits being arranged in each of said third plurality of slots the tool is adapted for radial cutting of the workpiece. ### Claim 2 (depends on 1) The tool of claim 1 wherein each of said first plurality of elongate slots is formed at an angle in relation to the axis of rotation of said disc- shaped body. ### Claim 3 (depends on 1) The tool of claim 1 further comprising a first tool bit retaining means affixed to said disc-shaped body proximate each of said first plurality of elongate slots for retaining the first tool bits arranged therein at any point along the length of said first plurality of slots. ### Claim 4 (depends on 1) The tool of claim 1 further comprising second tool retaining means affixed to said disc-shaped body arranged proximate each of said second plurality of slots and being adapted for retaining the second tool bits in said second plurality of slots. ### Claim 5 (depends on 1) The tool of claim 1 further comprising a plurality of spacers for placement within said third plurality of slots in combination with at least one of the first tool bits also being arranged therein, and third retaining means affixed to said disc-shaped body proximate said second plurality of slots for retaining both said spacers and first tool bits in said second plurality of slots. ### Claim 6 (depends on 5) The tool of claim 5 wherein said third retaining means is formed as a flat plate and is affixed to said disc-shaped body by means of screws. ### Claim 7 (depends on 5) The tool of claim 5 wherein said third retaining means is formed as an inverted U-shaped member and arranged above said second plurality of slots for permitting a number of spacers and first tool bits to be arranged within said second plurality of slots in excess of the number permitted by the depth of said third plurality of slots. ### Claim 8 (depends on 7) The tool of claim 7 wherein said third retaining means includes protrusions arranged on the inner surface of said inverted U-shaped member. ### Claim 9 (depends on 1) The tool of claim 1 wherein said disc-shaped body has a central portion having a thickness less than the rim portion of said disc-shaped body. ### Claim 10 (depends on 1) The tool of claim 1 further including a pilot bit means attached to said disc-shaped body on the side opposite the rotary drive, said pilot bit means comprising a drill bit arranged concentrically with said disc-shaped body. ### Claim 11 A device for attachment to a rotating drive shaft, comprising: a flat body member having two flat surfaces and outer peripheral edges and with a central axis of rotation substantially perpendicular to said flat surfaces and having first, second, and third plurality of slots formed therein, said first plurality of slots being formed completely through said flat body member from one flat surface to the other flat surface so as to define inner central hub walls and outer rim walls in said flat body member, each of said plurality of slots being of a length to receive cutting tool bits therein at any point along the length of the slot, the tool bits being arranged in substantially the direction of the central axis of rotation, said second plurality of slots formed in outer peripheral edges of said flat body member being in spaced-apart relationship with said first plurality of slots arranged radiating outwardly from said central axis of rotation and being adapted to receive molding cutter blades therein, said third plurality of slots formed in said outer peipheral edges of said flat body member being in spaced-apart relationship to said first and second plurality of slots arranged radiating outwardly from said central axis of rotation including means to form a floor member for said third plurality of slots and being formed having a depth to receive a plurality of cutting tool bits and bar-shaped spacer means therein arranged parallel to the flat surfaces of said flat body member, whereby when tool bits and spacer means are placed in said slots, the device is attached to the rotary drive shaft, and rotated in contact with a workpiece, the workpiece is cut. ### Claim 12 (depends on 11) The device of claim 11 wherein said first plurality of slots are formed at an angle of substantially 40 degrees in relation to a plane perpendicular to the central axis of rotation of said flat body member. ### Claim 13 (depends on 11) The device of claim 11 further comprising a flat tool retaining plate affixed to said flat body member at each of said first plurality of slots for retaining the tool bit in said slot at any point along the length of said slot. ### Claim 14 (depends on 11) The device of claim 11 further including retaining screw means threadedly engaged in said flat body member adjacent said second plurality of slots for retaining said molding cutter blades in said flat body member. ### Claim 15 (depends on 11) The device of claim 11 wherein said bar-spaced spacer means are arranged within said third plurality of slots in combination with the cutting tool bits so as to completely fill each of said third plurality of slots with the combination of cutting tool bits and said spacers and further comprising retaining means affixed to said flat body member for retaining the combination of spacers and cutting tool bits in said flat body member. ### Claim 16 (depends on 15) The device of claim 15 wherein said retaining means is formed as a flat plate. ### Claim 17 (depends on 15) The device of claim 15 wherein said retaining means is formed is an inverted U-shaped member arranged in relation to each of said third plurality of slots so as to permit a number of spacers and cutting tool bits to be mounted in relation to said slot which are greater than the number determined by the depth of the third plurality of slots. ### Claim 18 (depends on 11) The device of claim 11 wherein said flat body member is formed having a area concentric with said central axis of rotation which has a thickness less than the remainder of said flat body member, said area of lesser thickness being arranged on the rotating drive shaft side of said flat body member. ### Claim 19 (depends on 11) The device of claim 11 further including a pilot bit assembly attached to the flat side opposite rotating drive shaft of said flat body member and including a drill bit concentrically aligned with said central axis of rotation.