| 摘要 |
A series of pairs of toothed roll assemblies form bights or troughs for reception of whole lemons, and all of the toothed roll assemblies turn in the same direction, every other one turning at higher speed. The higher speed rolls comprise a plurality of discs each having a toothed periphery, the discs being frictionally driven from a supporting shaft. The slower speed rolls comprise toothed discs of the same type but are clamped solidly to rotate with the slower speed shaft. Each of the slower speed rolls includes a plurality of bumper elements spaced along the length of the roll and each having a protuberance extending beyond the periphery of the toothed discs, the protuberances serving to shift the lemons about in the troughs between adjacent rolls and to insure that substantially the entire outer surface of the lemon is exposed to the oil cell puncturing action of the teeth of the discs. The toothed discs are submerged in a pool of water and the puncturing action takes place below the water level to minimize losses in recovery of the oil. A conveyor driven by a Geneva movement advances intermittently to move the lemons from one trough to the next.
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