| 摘要 |
A machine for the pitting of drupaceous fruits, e.g. prunes, has an endless chain of articulated conveyor plates each provided with several vertical cylindrical bores whose flared mouths face upward on the upper run of the chain where each plate passes successively, in steps, through a loading station, a pitting station and an ejection station. The loading station comprises a hopper filling each bore of an underlying conveyor plate with a fruit to be pitted; in the pitting and ejecting stations, the conveyor plates are overhung by a vertically reciprocable carrier supporting a series of pushers and an adjoining series of plungers. In the pitting station the conveyor plates are underlain by a base plate having perforations aligned with their bores, each perforation being provided with an elastic insert which closes around a pit being dislodged by a pusher in order to strip adhering pulp therefrom. Upon the ejection of a pitted fruit from a bore, the bore wall is cleaned by a wiper disk mounted on the plunger stem or by a brush suspended from the reciprocable carrier at a location downstream of the ejection station.
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