Glass sorting apparatus

Claim 1

A glass sorting apparatus for the removal of non-glass parts or glass parts with non-glass components attached thereto from a mixture of glass, paper-labeled glass and non-glass parts, said apparatus comprising first conveyor means for supplying said mixture, second conveyor means for carrying away some of said mixture, said first conveyor means having a discharge end disposed at a first elevation and said second conveyor having a loading end at a lower elevation, a slide extending between the discharge end of said first and the loading end of said second conveyor and being adapted to provide for a predetermined slide speed of the parts deposited thereon, said slide having a transparent section and light sending and receiving units arranged on opposite sides thereof such that any part moving on the slide will pass over said transparent section and past said light sending and receiving units, said light sending unit being adapted to emit an infrared radiation close to visible light and being so arranged as to direct said infrared light toward said receiving unit through said transparent section of said slide and said slide further having a drop gate arranged downstream of said light sending and receiving units and controlled by said light receiving unit so as to be momentarily opened upon sensing of the presence of a non-glass part with a delay depending on the part slide speed such that the non-glass part is discharged through the momentarily opened drop gate.