Abstract: A dump chute assembly includes an outer radially-shaped housing having an access door and an inner pivotally movable radially-shaped chute member. The inner chute member includes a sealing panel which seals the assembly from the incinerator chimney. Control member is provided for operatively rotating the inner chute member to the dumping position in the interior of the chimney and the collection position exterior of the chimney.

Abstract: A pass-through structure for enabling objects to be transferred through a dividing wall from one area to another is disclosed wherein an outer drum is provided with opposed openings, one on each side of the dividing wall, and an inner drum provided with one opening is rotatably mounted within the outer drum so that, when the opening in the inner drum is aligned with an opening in the outer drum, objects may be placed therein and the inner drum rotated so that the opening therein comes into alignment with the opening in the outer drum whereby the objects therein may be removed. One or both of the drums may be lead-lined when X-ray film cassettes are the objects being transferred. Latch means are provided to lock the inner drum in at least one of its rotated positions.

Abstract: A portable darkroom especially adapted for use in connection with the processing of X-ray films is disclosed wherein a circular enclosure, comprising an outer cylindrical housing and an inner rotatable door, for the ingress and egress of a person, is in communication with a known film processor by means of an enclosed tunnel arrangement. An opening in the outer shell when aligned with a similar opening in the rotatable door, enables a person to enter the enclosure and thereafter rotate said door to bring the opening therein into alignment with said tunnel, thus closing the opening in said outer shell, and enabling such person to pass a prepared film through said tunnel into said processor.