Chain saw brush cutting accessory

Claim 1

In a chain saw of the type having a housing, a power drive unit mounted in the housing, a sprocket wheel rotatably mounted in the housing and drivably engaged by the power drive unit, a chain guide bar having its inner end affixed to the housing adjacent the sprocket wheel, the chain guide bar having its free outer end extending away from the housing, an endless cutting chain slidably carried on the periphery of the chain guide bar and driven by the sprocket wheel to run outwardly from the housing on the upper side of the chain guide bar and to run inwardly toward the housing on the lower side of the chain guide bar, a rear handle mounted on the housing and extending in an opposite direction from the chain guide bar, the rear handle enclosing a trigger switch for actuating the power drive unit, and a front handle mounted on the housing and extending above and around at least one side of the housing, the improvement therein comprising a brush cutting accessory device adapted to be attached to the chain saw, said improvement comprising: a. a hollow tip enclosure attached to the free outer end of the chain guide bar and enclosing the cutting chain as it passes around the outer end of the chain guide bar, said hollow tip enclosure having inner walls spaced from the cutting chain to provide running clearance therebetween, said tip enclosure having outer walls for shielding the chain from contact with external obstructions, and b. a brush guide mounted on said hollow tip enclosure, said brush guide extending upwardly from a first point on said tip enclosure adjacent to the upper outward run of the cutting chain to a second point spaced above the upward outward run of the cutting chain, said brush guide further having a continuous guiding edge facing the housing, said guiding edge being adapted to support and to guide brush and limbs into engagement with the cutting chain at the location where the upper outward run of the cutting chain enters said hollow tip enclosure.