Abstract: A concentric coaxial cutting machine which cuts cylinders, cylindroids or cones using a chain saw from a single larger object such as a wood tree trunk, a block of ice or a block of plastic.

Abstract: A precision multi-purpose machining apparatus for facilitating lathing, milling, drilling, sawing or routing operations typically using a rotary-type cutting tool. In a preferred embodiment the multi-purpose machining apparatus of this invention is characterized by an elongated support frame and a cutting tool mount cradle which is adjustably mounted on the support frame for receiving a cutting tool, such as an electric-powered DREMEL (trademark) rotary cutting tool. The support frame is capable of resting in a horizontal position, in which the cutting tool can be fitted with a cutting tool bit and the frame fitted with alternative workstock mounting attachments, to facilitate various lathing operations on a wooden or aluminum workstock. Alternatively, a saw table and saw blade can be removably mounted on the horizontal support frame and the cutting tool becomes a saw motor, the rotating shaft of which is connected to the saw blade by means of a drive belt, to facilitate various sawing operations.

Abstract: The present invention consists of a main frame that mounts atop a table saw. An axis shaft on a rocker assembly holds a wooden workpiece which is rotated and lowered into the circular cutting blade. Either a radius or square shoulder tenon can be cut depending on the orientation of the axis shaft.

Abstract: Woodworking machines which can hold works in tilted positions thereby to render possible the suitable working of cave portion in said works. The woodworking machine according to the invention has a swiveling table 2 carrying a plurality of rotating jigs 4 in parallel relation to each other and a tailstock 3 carrying holders 5 corresponding to said jigs 4 for holding respective works between said holders 5 and said jigs 4, said swiveling table 2 and said tailstock 3 being located on the upper surface of a base plate 8, wherein said holders 5 are located on said tailstock 3 which can be vertically shifted according to the invention, thereby to hold said works 1 in their tilted positions.

Abstract: A dado lathe is provided for use with a table saw in performing numerous cutting operations on a piece of wood stock. The dado lathe device includes a pair of parallel, spaced apart guide rails upon which a frame is slidably mounted. The frame includes vertically and longitudinally adjustable headstock and tailstock spindles for rotatably supporting the wood stock. A drive system selectively rotates the wood stock while moving the frame longitudinally along the guide rails. Using the dado lathe device, a square wood stock can be turned to a round wood stock, spiral and grooves can be cut in the wood stock, the wood stock can be tapered, and beading and reeding can be cut along the length of the wood stock.

Abstract: Apparatus for duplicating a master object includes a router which is positioned on a pivoting carriage which has a follower which engages a rotating three dimensional master object. The work piece is rotated at the same rate as the master object and a router carried on the carriage engages the work piece. The location of the axis about which the master object rotates may be varied to change the scale factor so that the work piece may be smaller than the master object.

Abstract: This invention provides a device for employing a motorized hand tool, such as a portable router and the like, to cut a spiralled groove in a workpiece, such as a leg for a table, chair, and the like. Basically, the device comprises: frame means including end block means rotatably journalling chuck means for holding the workpiece for rotation around an axis and guide means interconnected to the end block means for guiding the motorized hand tool for movement with respect thereto in a direction generally parallel to the axis; and drive means mounted on the frame means and being interconnectable between the motorized hand tool and the chuck means to cause movement of the motorized hand tool in a direction generally parallel to the axis in response to rotary movement of the workpiece around the axis.