Cutting machine particularly for use in the pruning or preprunin

Details Cutting machine particularly for use in the pruning or preprunin Cutting machine particularly for use in the pruning or preprunin

1995-08-09

1998-04-14

Bray, W. Donald

Harvesters

Cutting

Hedge or plant-row trimmers

56 149, 56255, 144 341, 47 143, 47 58, A01D 5518

Patent

active

057379084

ABSTRACT:
A pre-pruning machine for trellised vines comprises a cutting module featuring superimposed tools each consisting of a cage and a cutting organ, and a feeding module consisting of superimposed feeding discs, it being possible to swivel the supports holding these modules by the action of a jack so that the said modules may interpenetrate each other in working phase. According to the invention, at least the motor of the cages is submitted to a slide drive limiting the torque, which is adjustable by the action of a pressure limiter (131; 133) within a calibrated range and selected by the operator in function of the working conditions (pruning type, advancing speed, etc.). Preferably, the motors of the cutting organs, feeders and cages are connected in series, the opening/closing device by means of the jack is connected in branch-off upstream of the feeder motor, and the feeder motor is also connected to a pressure limiter (131). When, for example, an obstacle is encountered, the motor of the cage module will "slide", thereby avoiding all damage. The rotation speeds of the feeders and the cages are adjusted by means of the device (131). In interpenetration phase, in an evacuation zone of severed shoots, the tangential components of the feeder rotation speeds are higher than the tangential components of the cage rotation speed, so as to ensure proper evacuation from the trellised wires of the shoots attached to the said wires by their tendrils.

REFERENCES:
patent: 2532174 (1950-11-01), Lieberman
patent: 4174601 (1979-11-01), Griffin
patent: 4383400 (1983-05-01), Mead et al.
patent: 4397136 (1983-08-01), McLeod
patent: 4459796 (1984-07-01), Stokes
patent: 4733525 (1988-03-01), Pellenc et al.
patent: 4860808 (1989-08-01), Le Clerc De Bussy
European Search Report dated Nov. 7, 1995.

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