Method and apparatus for edge-trimming a board

Claim 1

The method of edge-trimming a board which has two unfinished sides, which consists of (1) centering the board symmetrically in relation to a feeding line; (2) determining the optimum trimming direction and trimming width of the board by location of the center line of the board in relation to the feeding line by means of a measuring device; (3) passing the board through an edge-trimming device comprising two cutter heads which are adjustable in relation to each other, without changing the position of the board in relation to the feeding line; (4) moving the cutter heads in unison in a direction transverse to the feeding line while maintaining the distance between the cutter heads constant and (5) controlling the motion of the cutter heads in such a manner that the board acquires two longitudinal, parallel, finished side surfaces and the width is the desired optimum value.

Claim 2

The method of edge-trimming a board which has two unfinished sides, which consists of (1) centering the board symmetrically in relation to a feeding line; (2) determining the optimum trimming direction and trimming width of the board by location of the center line of the board in relation to the feeding line by means of a measuring device; (3) passing the board through an edge-trimming device comprising two cutter heads which are adjustable in relation to each other, without changing the position of the board in relation to the feeding line; (4) moving the cutter heads in unison in a direction transverse to the feeding line while maintaining the distance between the cutter heads constant and (5) controlling the motion of the cutter heads in such a manner that the board acquires two longitudinal, parallel, finished side surfaces and the width is the desired optimum value.

Claim 4

An apparatus for edge trimming a board which has two unfinished sides, said apparatus comprising: means for centering said board symmetrically in relation to a feeding line, a measuring device mounted along said feeding line for determining the optimum trimming direction and trimming width of said board; an edge trimming device for trimming the sides of said board, said edge trimming device comprising two oppositely spaced adjustable cutter heads disposed on opposite sides of said feeding line; computer means for adjusting said cutter heads in relation to each other in response to said measuring devices determinations; said computer means defining means for longitudinally guiding the board in such a manner that it passes from the measuring device into the edge trimming device and through it without changing said board's position in relation to the feeding line and further defining means for transversely moving the said cutter heads in relation to the longitudinal axis of said board while maintaining said adjusted relationship between said cutter heads.

Claim 5

An apparatus for edge trimming a board which has two unfinished sides, said apparatus comprising: means for centering said board symmetrically in relation to a feeding line, a measuring device mounted along said feeding line for determining the optimum trimming direction and trimming width of said board; an edge trimming device for trimming the sides of said board, said edge trimming device comprising two oppositely spaced adjustable cutter heads disposed on opposite sides of said feeding line; computer means for adjusting said cutter heads in relation to each other in response to said measuring devices determinations; said computer means defining means for longitudinally guiding the board in such a manner that it passes from the measuring device into the edge trimming device and through it without changing said board's position in relation to the feeding line and further defining means for transversely moving the said cutter heads in relation to the longitudinal axis of said board while maintaining said adjusted relationship between said cutter heads.