Multiple Patents (Class 209/311)
With pneumatic treatment (Class 209/312)
Alined (Class 209/313)
Stepped (Class 209/314)
Superposed (Class 209/315)
  • Material separating machine
    Patent number: 4319991
    Abstract: Apparatus for separating a composite of three materials into their particular groups includes a first screen (17) which permits the group of the smallest sized material to pass therethrough. The materials not passing through the screen (17) are fed to a trough (21). Second screens (23) are provided near the end of the trough which permits the group of the mid-sized materials to pass therethrough. The group of the largest sized materials move to and through a discharge spout (25) at the end of the trough (21).
    Type: Grant
    Filed: October 24, 1980
    Date of Patent: March 16, 1982
    Assignee: Midwestern Industries, Inc.
    Inventors: William J. Crone, Jr., John P. Wright
  • Separator apparatus
    Patent number: 4082657
    Abstract: A new and improved separating device for separating particulate from a fluid stream including a plurality of screen units which are releasably held in a screen unit mounting assembly by inflatable tubes; the screen unit angular position is adjustable by adjusting the height of a plurality of adjustable support posts; and, dual vibrators are mounted with the screen unit mounting assembly and are interconnected for simultaneous vibration in mutually perpendicular directions.
    Type: Grant
    Filed: January 19, 1976
    Date of Patent: April 4, 1978
    Inventor: Ernest L. Gage
  • Method and apparatus for comminuting sand clods
    Patent number: 4074867
    Abstract: A method and apparatus for removing form sand from a casting box and for comminuting and sand clods formed by the sand removed from the box, in which the casting box is placed on a grate having two grate portions, preferably tiltable about spaced tilting axes between a first position, in which the grate portions are located in a common substantially horizontal plane for receiving a filled casting box on its upper surface, and a second position in which the two grate portions extend upwardly inclined from a center line of the grate.
    Type: Grant
    Filed: May 20, 1976
    Date of Patent: February 21, 1978
    Inventor: Hermann Jacob