Feeder has pair of cogged rollers with cogged discs, injector, pins, weighted piston, and entry socket

摘要

A pair of cogged rollers with cogged discs (1) is positioned in front of the injector or other connecting-point on the path of the dust into the test-room. A pair of rollers (2) with pins (3) engaging with the gaps between the cogged discs is positioned after the pair of cogged rollers. A weighted piston (7) slides in the entry-socket (6) above the pair o f cogged rollers.