Device for measuring the width of timber

Details Device for measuring the width of timber Device for measuring the width of timber

1977-02-14

1978-10-31

Corbin, John K.

Optics: measuring and testing

Refraction testing

Prism engaging specimen

356160, 356199, G01B 1102

Patent

active

041231694

ABSTRACT:
The width of a piece of timber, such as a board is measured with a device including a laser tube emitting laser beam to be reflected by a rotatable mirror polyhedron and a parabolic reflector into a direction along the board, mirror rasters being provided at intervals along the board so as to reflect laser beam pulses onto the board, each raster including a group of mirrors reflecting the beam pulses onto spots of the board that are spaced apart laterally across the board, and detecting means being provided for receiving the pulses reflected from the board surface in order to obtain information about the board width. Preferably, the pulses received by the detectors are transferred to a computer which calculates, in a manner known per se, the optimal sawing width for the board. Instead of the reflector, lens means may be used for directing the beam along the board.

REFERENCES:
patent: 2674917 (1954-04-01), Summerhayes
patent: 3470383 (1969-09-01), Persson et al.
patent: 3513321 (1970-05-01), Sherman
patent: 3698818 (1972-10-01), Bowker et al.
patent: 3886372 (1975-05-01), Sanglert

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