Hydraulic powered arm of balance cutter device

A device for cutting brushwood including bushes, shrubs and the like, comprising:

• a protective frame structure;
• a massive, circular flywheel disk having a geometrical axis and an annular, outer edge surface, which flywheel disk is mounted rotative about its geometrical axis on said frame structure;
• rotative driving means, also mounted on said frame structure, for rotating the flywheel disk at high speed about its geometrical axis;
• a first blade attached to the said flywheel disk through a first pivot peripherally mounted on the circular disk, and a second blade also attached to the said disk through a second pivot also peripherally mounted on the massive disk, said first and second pivots being diametrically opposed with respect to each other;
• the frame structure including a front, transversal frame member, and a rear, transversal frame member, the said flywheel disk and said first and second blades rotating between said front and rear frame members, at least one intermediate, transversal frame member interposed between said front and rear frame members and defining an elongated aperture in which the said disk and said first and second blades rotate, the front, rear and intermediate frame members each being provided with a vertically positioned plate member, and each of said front, rear and intermediate plate members including a bottom surface convexly curved to form a runner capable of sliding on the ground when the said backhoe is rotated about said vertical axis, the brushwood then penetrating the frame structure between said plate members to reach the first and second rotating blades;
• the frame structure further including means for attaching said frame structure to a distal end of a hydraulic backhoe rotatable about a vertical axis whereby said brushwood cutting device can be moved through operation of said backhoe, and wherein said front, rear and intermediate plate members are each bent to define an arc of circle having a radius of curvature corresponding substantially to a mean distance, between the said plate member and the said vertical axis, which can be obtained through operation of the said backhoe;
• and
• whereby, in operation, (a) rotation at high speed of the flywheel disk produces a centrifugal force on the first and second blades to proturde said blades outwardly beyond the annular, outer edge surface of the circular disk, (b) the frame struture is so moved that the protruding blades hit the brushwood to cut the same, (c) the first and second blades pivot on their respective first and second pivots to prevent damage to said blades when hitting larger bushes and shrubs, bush and shrub stumps, and other obstacles, (d) the flywheel nature of the circular disk helps said disk to maintain its rotational speed constant to allow said blades to efficiently cut the brushwood, and (e) as the flywheel disk is massive and circular, obstruction in the rotational movement of the said disk caused by bushes, shrubs, bush and shrub stumps, and other obstacles contacting the disk is greatly reduced and possible only by friction whereby damage to the flywheel disk caused by obstruction is prevented.