Apparatus for and method of sorting sheet material

• US 3,358,831 A
• Filed: 09/03/1965
• Issued: 12/19/1967
• Est. Priority Date: 09/03/1965
• Status: Expired due to Term

• Current Assignee: Cothrell Le Roy E
• Original Assignee: Cothrell Le Roy E
• Inventors: COTHRELL LE ROY E
• Application Number:
  US04/484,877
• Time in Patent Office: 837 Days
• US Class Current: 209/606
• CPC Class Codes: B27L 5/002 Wood or veneer transporting devices B27L5/022 takes precedence
• CPC Class Codes: Y10S 209/905 Feeder conveyor holding item by suction
• CPC Class Codes: Y10S 277/906 Seal for article of indefinite length, e.g. strip, sheet
• CPC Class Codes: Y10S 277/913 Seal for fluid pressure below atmospheric, e.g. vacuum

Claims

1. APPARATUS FOR CONVEYING AND SORTING SEMI-RIGID SHEET MATERIAL ALONG INCLINED PATHS EXTENDING IN A SINGLE LONGITUDINAL DIRECTION, SAID APPARATUS COMPRISING A STORAGE ZONE, A GRADING ZONE, A TRANSFER ZONE AND A RECEIVING ZONE ALL ARRANGED CONTIGUOUSLY AND SUCCESSIVELY CONVEYING THE SHEET MATERIAL IN SAID DIRECTION, CONVEYOR MEANS FOR SAID SHEET MATERIAL WITHIN EACH OF SAID ZONES WITH SAID CONVEYOR MEANS IN SAID STORAGE AND TRANSFER ZONES COMPRISING VERTICALLY SPACED APART TRAYS, SUCTION MEANS WITHIN SAID STORAGE AND GRADING ZONES SUBJACENT SAID CONVEYOR MEANS WHEREBY THE UNDERSIDE OF SHEET MATERIAL CONVEYED THEREIN WILL BE SUBJECTED TO A REDUCED ATMOSPHERIC PRESSURE RESULTING IN PRESSURED CONTACT WITH SAID CONVEYOR MEANS.