Accession Number : ADD008972

Title :   Automatic Particle Analyzing System.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Johnson,Richard F

Report Date : 13 Oct 1981

Pagination or Media Count : 9

Abstract : A measured stream of particles is dropped onto the apex of a distributor cone where it is divided into a circular pattern falling through a narrow sizing zone onto the peripheral edge of a rotatable platen. Platen rotation carries each particle into a frame area viewed, preferably, by a microscope and a TV camera the output of which is applied to a computer programmed to analyze selected characteristics. A rotatably-indexed mirror system reflects selected views into the microscope for the analysis. Interfaced with the computer is a signal generator providing feed-back signals that synchronously control system operation. For example, a feedback signal stops platen rotation when a particle is brought into the viewing or frame area. Other signals control other functions such as the indexing of the mirror system to provide the desired views, i.e. front, back, top, bottom, etc. Scanning devices other than optics can be used if so desired. (Author)

Descriptors :   *Patents, *Optical equipment, *Analyzers, Particulates, Sorting, Particle size, Quality control, Optical scanning, Television cameras, Decision making, Automatic, Foraminifera, Micropaleontology

Subject Categories : Geology, Geochemistry and Mineralogy
      Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE