E - Fixed Constructions – 02 – F
Patent
E - Fixed Constructions
02
F
214/28, 214/40
E02F 3/78 (2006.01) E02F 3/30 (2006.01) E02F 5/28 (2006.01) E02F 9/18 (2006.01) E02F 3/42 (2006.01)
Patent
CA 1186658
EARTHMOVING MACHINE ABSTRACT An earthmoving machine primarily for land drainage and irrigation purposes has a pivotally mounted boom carrying an arm pivoted at one end to one end of the boom and having a bucket or the like attached at its other end. At the end of the arm which is pivoted on the boom a quadrant is formed around which passes a pendant cable attached to a counterweight which is slidable on the rearwardly extending end of the boom, the counterweight, and thus the arm, being moved by a ram so that radially outwards movement of the arm is accompanied by outwards movement of the counterweight along the end of the boom in the opposite direction to balance the machine. A draw-in rope or cable is attached to the free end of the arm in order to draw-in the arm towards. the pivot axis of the boom, the ram and draw-in rope winch being hydraulically connected so that the one is operative when the other is in neutral and vice versa.
413765
Brocklebank Norman
Deighton Kenneth A.
Borden Ladner Gervais Llp
Priestman Brothers Limited
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