Shaker chain drive assembly for tomato harvester or the like

Details Shaker chain drive assembly for tomato harvester or the like Shaker chain drive assembly for tomato harvester or the like

1979-08-30

1981-04-21

Eskovitz, Jay N.

Unearthing plants or buried objects

With above-ground means for detachment of plant part

Detachment by pulling, beating, shaking or crushing

56 165, 56327R, 56DIG2, 130 30R, 209365R, A01D 1708

Patent

active

042627508

ABSTRACT:
The drive unit of a conventional mechanically actuated shaker for removing comestibles from their support vines is supplanted by a pair of hydraulic motors capable of effecting extremely rapid forward and reverse movement of the shaker. An adjustable multivibrator circuit produces electrical pulses of predetermined duration and frequency. The pulses activate a solenoid-operated hydraulic valve supplying first the forward motor and then the reverse motor with hydraulic fluid. The quick, snapping action of the shaker afforded by the electro-hydraulic drive apparatus effectively denudes the plants or vines of their fruit.

REFERENCES:
patent: 2734537 (1956-02-01), Geisler
patent: 3364770 (1968-01-01), Button et al.
patent: 3603168 (1971-09-01), Kaplan
patent: 3666017 (1972-05-01), Gates et al.
patent: 3721132 (1973-03-01), Johnson

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