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US T861053 I4
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DEFENSIVE PUBLICATION UNITED STATES PATENT OFFICE Published at the request of the applicant or owner in accordance with the Notice of Apr. 11, 1968, 849 O.G. 1221. Identification is by serial number of the application and the heading indicates the number of pages of specification, including claims and of sheets of drawing contained in the application as originally filed. The file of this application is available to the public for inspection; reproduction may be purchased for 30 cents per sheet.
T Applications published under the Defensive Publication Program have not been examined as to the merits 01' alleged invention. The Patent Oflice makes no assertion as to the novelty of the disclosed subject matter.
PUBLISHED APRIL 29, 1969 PHOTOELECTRIC SCANNER FOR DETECTING RIDGES AND INDENTATIONS IN A YARN PACKAGE Gerald Irving Buckson, Newark, and John Albert Masino and Stanley Victor Williams, Wilmington, Del., assignors to E. I. du Pont de Nemours and Company, Wilmington Del., a corporation of Delaware Filed Feb. 1, 1968. Published Apr. 29, 1969 Int. Cl. G01n 21/30; H01j 39/12; G01b 11/30 US. Cl. 250-219 1 Sheet Drawing. 10 Pages Specification An apparatus for simultaneously measuring ridges and indentations in the peripheral surface of a rotating cylindrical yarn package wherein a ribbon of light is projected axially across the surface of the package at an angle With respect to the longitudinal axis of the package to cast shadows corresponding to the ridges and indentations. The illuminated portion of the package surface is scanned in a non-specular plane and the light reflected from the package surface in the non-specular plane is redirected to a photosensitive means which detects ridges and indentations in the surface of the package through variations in intensity of the redirected light.
*3 (A April 1969 G. BUCKSON ET AL DEF. PUB.
PHOTOELECTRIC SCANNER FOR DETECTING RIDGES AND INDENTATIONS IN A YARN PACKAGE Filed Feb. 1, 1968 FIG-l 1e DETECTOFTL @L i 2 12.), 1 4 a g 66 DISCRIMlNATOR MEMORY mTERRoGATOR 58 I 80 DEVICE DETECTOR 7 H' FIELD or VIEW F l G. 2;
4 NE F foams u FIELDO VIEW INVENTORS GERALD IRVING BUCKSON JOHN ALBERT MASINO STANLEY VICTOR WILLIAMS ATTORNEY