Bulldozer means with a pivotable blade

Claim 1

Bulldozer means comprising: a. support means to mount said bulldozer means with a tractor, b. frame means pivotally connected to said support means, c. mounting means transversely pivotally mounted with said frame means, pivotable about an upright axis, d. earthworking means pivotally mounted with said mounting means pivotable in an upright plane about a point, e. first means connected to said support means and said frame means to pivot said frame means, f. second means connected to said frame means and said mount means to pivot said mounting means, g. third means connected to said earthworking means and said mounting means to pivot said earthworking means, h. friction means mounted between said earthworking means and said mounting means to restrain pivotal movement of same, said bulldozer means is adapted to be mountable on a tractor means and have said earthworking means transversely pivotable, tiltable and vertically adjustable, and said friction means to restrain pivotal movement of said earthworking means is a plurality of friction pad assemblies mounted between said mounting means and said earthworking means, said friction pad assemblies each having a bolt member secured to said earthworking means and a friction pad mounted on said bolt member against said mounting means by a nut member, and said third means being a piston and said hydraulic cylinder operably to overcome frictional contact of said frictional pads and aid in holding the said earthworking means in the adjusted rotation position about a horizontal axis.