Apparatus and method for measuring the roughness of lumber

Details Apparatus and method for measuring the roughness of lumber Apparatus and method for measuring the roughness of lumber

1979-06-04

1982-01-26

Krass, Errol A.

Boots, shoes, and leggings

73105, 356237, 364507, G01B 528

Patent

active

043131727

ABSTRACT:
A method and an apparatus for automatically measuring the thickness and the roughness of elongated articles, such as wooden boards. The device comprises a housing having an opening therethrough to receive at least a portion of a board to be measured. At least one contact probe is provided in the housing and is biased against at least one surface of the board to sense irregularities in the flatness of the surface along a measured length thereof. A measuring circuit is connected to the contact probe to provide a measurement signal representative of the sensed irregularities and variations in thickness. A distance measuring device is also provided in the housing to measure the distance of displacement of the board past the contact probe. An output display means indicates selected ones of the measurements obtained. A computing means accumulates measured values of the means, minimum and maximum thickness, for a group of boards and permits the extraction of such statistical information.

REFERENCES:
patent: 3544774 (1970-12-01), Peklenik
patent: 3931501 (1976-01-01), Barr et al.
patent: 3983371 (1976-09-01), Siranni et al.
patent: 4009376 (1977-02-01), Faraguet
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patent: 4163321 (1979-08-01), Cunningham
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patent: 4206633 (1980-06-01), McKechnie et al.
patent: 4213331 (1980-07-01), Porter
Underwood et al.; "The Surfagage-An Instrument for Roughness Measurement"; Research Labs. Div.-Gener'l Motors Corp.; Mar. 1952.
"The Profilometer"; Physicists Research Company; Ann Arbor, Mich.; Jun. 1947.

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