초록 ▼

A lumber incisor comprising a rotatable drum. A plurality of annular incisor rings are mounted on the drum to turn with the drum. Teeth on the periphery of each incisor ring, extend outwardly from a tooth base on the periphery of the incisor rings. An annular spacer ring is positioned between each p

A lumber incisor comprising a rotatable drum. A plurality of annular incisor rings are mounted on the drum to turn with the drum. Teeth on the periphery of each incisor ring, extend outwardly from a tooth base on the periphery of the incisor rings. An annular spacer ring is positioned between each pair of neighboring incisor rings. An annular cleaning ring surrounds each spacer ring and is freely movable between the neighboring incisor rings. Each of the above annular rings has an inner radius, an outer radius and a ring width equal to the outer radius less the inner radius. The spacer rings have an outer radius less than the outer radius of the incisor rings. The outside diameter of each cleaner ring is at least equal to the incisor ring outside diameter plus a height of one tooth.

대표청구항 ▼

A method for operating a lumber incisor for forming a pattern of incisions in the outer surface of a piece of lumber during an incising operation and for self-cleaning the lumber incisor, the method comprising: providing a rotatable drum having a plurality of annular incisor rings mounted on the dru

A method for operating a lumber incisor for forming a pattern of incisions in the outer surface of a piece of lumber during an incising operation and for self-cleaning the lumber incisor, the method comprising: providing a rotatable drum having a plurality of annular incisor rings mounted on the drum to turn with the drum, with teeth spaced apart along the periphery of each incisor ring, each tooth extending outwardly from a tooth base on the periphery of the incisor ring; and an annular cleaning ring freely movable radially outwardly from the drum between the neighbouring incisor rings, in which the outside diameter of each cleaning ring is at least equal to the incisor ring outside diameter plus the height of one tooth; and forcing the combined annular incisor rings and the cleaning rings into pressure contact with the outer surface of the lumber so that the teeth engage the lumber for forming a pattern of incisions in the lumber, causing the cleaning rings to freely move by being forced outwardly away from the lumber as the teeth engage the lumber so the cleaning rings project beyond the teeth for a sub-stantial portion of the periphery of the cleaning rings to push outwardly from the teeth any substances attached to them from the incising operation.