Abstract: Clump-removal devices are disclosed for separating unacceptably large clumps from an air stream containing both clumps and substantially individualized fibers.

Abstract: Disclosed is an apparatus for dispensing sheet material such as bathroom tissue from a roll. The apparatus includes a cabinet having a dispensing zone from where the sheet material may be removed first from a primary roll and later from a reserve roll. The cabinet also has a storage zone where at least one reserve roll of sheet material is stored for use after depletion of the sheet material on the primary roll. A first spindle for holding the primary roll is attached to the cabinet in the dispensing zone, and a second spindle for holding the reserve roll is attached to the cabinet and is movable from the storage zone to the dispensing zone. The apparatus includes a holding element for holding the second spindle in the storage zone until depletion of the sheet material on the primary roll. The apparatus further includes a release member for releasing the holding element, preferably automatically, only upon depletion of the sheet material on the primary roll.