Device for continuously measuring a dimension of a workpiece by reflected light
OwnerRichard A. Maddeninventor
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Abstract
There is disclosed in the present application apparatus for continuously measuring a dimension such as the gage of a strand on the thickness of a web by a plurality of reflections of light focused on points at varying distances from the normal center line of the path of the strand or web. The light is conveyed to the various points of a set from a common light source through fibrous light guides and if reflected by the strand or web at a specific point, the light is conveyed to a display board through a light guide of a second set to indicate the size of the strand or web.
Claims7
Apparatus for continuously measuring a narrow work-piece in motion along a pre-determined linear path comprising a common light source, means for projecting a plurality of light beams toward points spaced longitudinally along and at varying distances laterally from the center of the path, visual display means for exhibiting a plurality of discrete light beams reflected from the work-piece, means for conducting light from the light source to the means for projecting each light beam and means for directing reflected light from the work-piece to the visual display means whereby the width of the work-piece is determined in steps by the number of light beams appearing at the visual display means.
Dependencies are inferred from the claim text.