Precision disc tiller and safety device therefor

Details Precision disc tiller and safety device therefor Precision disc tiller and safety device therefor

A - Human Necessities

01

B

A01B 15/16 (2006.01) A01B 21/08 (2006.01) A01B 23/06 (2006.01) A01B 61/04 (2006.01)

Patent

CA 2501338

The invention concerns a precision disc tiller (1) comprising a frame (2) equipped with at least one gang of non-motorized rotary discs (3) mounted respectively independent and oscillating relative to the support frame (2) via a safety device (5). Said disc tiller is characterized in that each disc (3) is linked to the frame (2) by a coil spring (6) forming at least one and a half turns, one end (6A) of the spring (6) being linkable to the frame (2) while the other end (6B) of the spring (6) is linkable to the hub (8) of the disc (3), said spring (6) being oriented such that the turn(s) of said spring are tightened by winding when the pressure exerted on the disc (3) is higher than the predetermined pressure allowing the disc to be vertically cleared (3) by being lifted.

L'invention concerne une déchaumeuse (1) de précision du type comprenant un châssis (2) équipé d'au moins un train de disques (3) rotatifs non moteurs montés respectivement indépendants et oscillants par rapport au châssis (2) porteur par l'intermédiaire d'un dispositif (5) de sécurité. Cette déchaumeuse est caractérisée en ce que chaque disque (3) est relié au châssis (2) par un ressort (6) hélicoïdal formant au moins une spire et demi, une extrémité (6A) du ressort (6) étant couplable au châssis (2) tandis que l'autre extrémité (6B) du 'ressort (6) est couplable au moyeu (8) du disque (3), ce ressort (6) étant orienté de manière telle que la ou les spires dudit ressort se resserrent par enroulement lorsque la pression exercée sur le disque (3) est supérieure à la pression prédéterminée en autorisant un effacement vertical du disque (3) par soulèvement.

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