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US 5,343,911 AGranted
Stave-cutting machine
OwnerThomas Humphreyinventor
Life of this patent
Estimating the term…
Abstract
A stave-cutting machine has a cutter head mounted on a pivot arm, and the pivoting of said pivot arm about an axis orthogonal to the longitudinal axis of the stave defines the bilge of the stave.
Claims7
A stave-cutting machine, comprising:
- a clamping device for holding a stave in a fixed position while it is being cut so as to define a longitudinal stave axis, stave ends, and a stave midpoint;
- a rotary cutter head having at least one cutter knife and mounted on a pivot arm which pivots about a pivot axis;
- wherein said pivot axis is orthogonal to said longitudinal stave axis;
- and
- wherein, as said pivot arm pivots, said cutter knife traces out an imaginary portion of a conical surface, so as to define a bilge and a flare angle in the plane of the longitudinal stave axis so that, if a stave is held in said clamping device, said cutter knife will cut the bilge and flare angle into the stave.
2 more elements
A stave-cutting machine, comprising:
- a clamping device for holding a stave and defining an end and a midpoint;
- a pivot arm mounted so as to pivot about a pivot axis which is in line with said midpoint;
- a cutter head mounted on said pivot arm such that, as said pivot arm pivots, said cutter head is moved from one end of the stave, through the midpoint, to the other end of the stave, with the height of said cutter head relative to the stave changing as said pivot arm pivots;
- wherein said cutter head includes cutter knives, and said cutter knives are at non-right-angles to said pivot axis, such that, when the height of said cutter head relative to said clamping device changes, it causes the distance from said cutter knives to the clamping device to change, so as to cut more material from the stave at the ends and less at the middle.
1 more element
Dependencies are inferred from the claim text.