E - Fixed Constructions – 02 – B
Patent
E - Fixed Constructions
02
B
61/33
E02B 11/00 (2006.01) E02F 5/18 (2006.01)
Patent
CA 1048800
IMPROVED DRAIN DIGGING MACHINE ABSTRACT OF THE DISCLOSURE A machine for digging drains in which a digging tool, known as a mole, is carried at the rear end of a beam which is slung between chassis members carrying road wheels, about which the beam is pivotable both about an axis parallel to the axis of rotation of the road wheels and about an axis running from front to back of the machine perpendicular to the first mentioned axis. The mole digging tool is attached to the beam through an arm which can be adjusted relative to the beam so as to control the depth to which the mole penetrates. The beam is linked to the road wheel chassis through a hydraulic ram so that the relative angular inclination of the beam and chassis can be adjusted. A disc coulter is mounted in advance of the arm carrying the mole digging tool, to open up the soil in front thereof and facilitate the passage of the arm through the soil. - 1 -
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