HEKEL- OF KAARDINRICHTING.

摘要

The rollers are arranged to form a nip through which the roving passes and are provided with axially extending peripheral slots, in which needle bars are radially slidable. The ends of the needle bars engage cam elements adjacent each end of the rollers and secured on the inner face of the roller housing, and the cam elements act to move the needle bars radially as the rollers rotate to adjust the operative height of the needles. Pref. brush rollers act on the needle rollers to remove waste fibre. A better opening is achieved.