A dowell making machine which has a central hollow shaft which is adapted for rotation on connection to a driving means and has associated therewith an end plate which is co-axial with the shaft and adapted to rotate therewith, the end plate having a central aperture larger in diameter than the dowell to be made and having cutting blades thereabout, a cylindrical saw blade is associated with the tool and is co-axial with the axis of the aperture of the shaft and is located between the end plate and the shaft, the arrangement being such that timber passing through the end plate is force formed to a substantially cylindrical shape and, on passing through the cylindrical blade, is sized to form a dowell.
A wood bar rounding machine which has two or more cutting and sanding units arranged concentrically so that a rectangular timber can be rounded and polished to a desired size. The desired product in a high quality can be obtained by a series of sequential steps of rough cutting and fine cutting and sanding after the wood is inserted at the front end and fed automatically by feed rollers.
A method and apparatus for producing deep drill holes, particularly in wood and similarly structured materials, in which two drill elements, embodied as hollow shafts with cutting ends formed as cutting elements and concentrically disposed one within the other, are operated at different speeds, the cutting end of the interior drill element running behind the cutting end of the exterior drill element.
A hollow shaft, threaded on the interior, permits a workpiece, having a square cross section, to be rotated therein and thereby moved axially to be driven against a cutting edge to form the dowel.
A dowel maker having a first rough-sizing blade attached to a body with a micro-adjust assembly for adjusting blade position and a second finish-cutting blade also attached to a body with a micro-adjust assembly for adjusting blade position. Dowel diameters smaller than the largest diameter the body can accommodate may be produced using interchangeable front insert guides, and interchangeable rear guides are also used for different diameter dowels. A workpiece with a square cross-section end is driven through the dowel maker with a square recess socket driven by an electric hand drill.
