E - Fixed Constructions – 02 – F
Patent
E - Fixed Constructions
02
F
37/28
E02F 3/76 (2006.01) E01H 5/06 (2006.01)
Patent
CA 1147953
ABSTRACT OF THE DISCLOSURE There is provided an improved wing plough apparatus for attachment to a road maintenance vehicle comprising at least one support member adapted to be secured to said vehicle and including forward and rearward longitudinally spaced points for pivotal connection of a wing blade and a wing blade pivotally connected at said two points to said at least one member for rotation about an axis parallel to the longitudinal axis of said vehicle, said first pivotal connection at said forward point comprising a first bracket secured to the inner end of said blade and pivotally connected at said forward point; and said second pivotal connection comprising a bell crank pivotally connected at its centre pivot to said rearward point and rigidly connected relative to its direction of rotation to the outer end of said blade by means of a hinged linkage, the outer pivots of said bell crank connected to a pair of oppositely acting hydraulic cylinders which are in turn rotatably secured to said at least one support member, whereby the action of said hydraulic cylinders causes the rotation of said bell crank and hence of said blade about said parallel axis.
405649
Haskett
Ross Joseph
LandOfFree
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