Snow groomer for snowmobile trails

A cutting blade assembly for use in an apparatus adapted to be towed by a dirigible tracked vehicle for grooming snow on snowmobile trails, which apparatus includes a generally horizontal main frame, a height adjustable gooseneck hitch supporting the forward end of said frame and adapted for towing engagement with the tracked vehicle, a packing roller mounted transversely within and supporting the rear end of said frame, and a moldboard scraper mounted on said main frame intermediate said gooseneck hitch and said packing roller, said cutting blade assembly comprising, in combination:

• a pair of opposed spaced-apart cutting blades pivotally secured at one end to the forward end of the main frame and extending at a rearwardly inclined angle toward the center of the main frame and said moldboard scraper for cutting and directing snow towards the central longitudinal axis of the frame;
• means for swinging said inclined blades to raise or lower their free ends vertically relative to the snow surface being cut thereby to adjust said blades to make a shallower or deeper cut;
• a central V-shaped cutting blade pivotally mounted at its base on the main frame and with its apex directed forwardly for cutting and directing snow away from the central longitudinal axis of the frame;
• means for swinging the V-shaped blade to raise and lower the apex thereof vertically relative to the snow surface thereby to cause said blade to take a shallower or deeper cut;
• both of said swinging means being coordinated to cause the apex of the V-shaped blade to swing oppositely to the free ends of the inclined blades whereby to control the quantity and flow of snow directed through the frame by the cutting blades.

A cutting blade assembly for use in an apparatus adapted to be towed by a dirigible tracked vehicle for grooming snow on snowmobile trails, which apparatus includes a generally horizontal main frame, a height adjustable gooseneck hitch supporting the forward end of said frame and adapted for towing engagement with said tracked vehicle, a packing roller mounted transversely within and supporting the rear end of said frame, and a moldboard scraper mounted on said main frame intermediate said gooseneck hitch and said packing roller, said cutting blade assembly comprising, in combination:

• a pair of opposed spaced-apart inclined cutting blades pivotally secured at one end to the forward end of the main frame and extending at a rearwardly inclined angle toward the center of the main frame and said moldboard scraper for cutting and directing snow towards the central longitudinal axis of the frame;
• a central V-shaped cutting blade pivotally mounted at its base on the main frame and with its apex directed forwardly for cutting and directing snow away from the central longitudinal axis of the frame;
• and directed forwardly for cutting and directing snow away from the central longitudinal axis of the frame;
• and
• means for swinging said inclined blades and said V-shaped cutting blade to raise or lower their free ends and apex respectively thereby to adjust said blades to make a shallower or deeper cut, said means being coordinated to cause the apex of the V-shaped blade to swing oppositely to the free ends of the inclined blades whereby to control the quantity and flow of snow directed through the frame by the cutting blades.