Balanced reciprocating, brush cutting, mower attachment
OwnerCyril A. Ryaninventor
Life of this patent
Estimating the term…
Abstract
A reciprocating, brush cutting attachment for a vehicle such as a riding lawn mower. The attachment is in the form of a sickle head having a bottom support plate that acts as a frame for the sickle head. Two top blades reciprocate back and forth on top of the support plate, one on each side. The bottom support plate and the two top blades all include front blade edges having a plurality of teeth. As the top blades move back and forth, vegetation between the teeth is cut. The prime advantage of the sickle head of the present invention is the reduction of vibrations achieved by continuously driving the colinear top blades in opposite directions with respect to each other.
Claims14
A sickle head for cutting brush, grass and other vegetation, said sickle head comprising:
- a bottom, support plate including a left side, a right side and a front blade edge, said front blade edge having a plurality of teeth;
- a first, top blade supported on top of the left side of said bottom plate, said first top blade having a blade edge with a first number of teeth;
- a second, top blade supported on top of the right side of said bottom plate, said second top blade having a blade edge with a second number of teeth;
- a drive shaft rotatably and centrally mounted to said support plate;
- first driving means for driving said first top blade along said top left side of said bottom plate in a reciprocating, continuous motion, said first means for driving comprising a first crank attached
- perpendicularly to said drive shaft, and a first connecting rod operatively attaching said first crank and said first top blade;
- and
- second driving means for driving said second top blade along said top right side of said bottom plate in a reciprocating, continuous motion, said second means for driving comprising a second crank attached perpendicularly to said drive shaft and disposed at a 180 degree angle with respect to said first crank, and a second connecting rod operatively attaching said second crank and said first top blade;
- wherein
- wherein said first number of teeth and said second number of teeth engage said plurality of teeth on said support plate to thereby cut vegetation between said teeth, as said top blades are driven in the reciprocating continuous motion;
- and
- said first driving means and said second driving means are configured to drive said first top blade and said second top blade in continuous, opposite directions with respect to one another.
A cutting attachment for a vehicle, said cutting attachment comprising:
- a bottom, support plate including a left side, a right side and a front blade edge, said front blade edge having a plurality of teeth;
- a first, top blade supported on top of the left side of said bottom plate, said first top blade having a blade edge with a first number of teeth;
- a second, top blade supported on top of the right side of said bottom plate, said second top blade having a blade edge with a second number of teeth;
- a drive shaft rotatably and centrally mounted to said support plate;
- first driving means for driving said first top blade along said top left side of said bottom plate in a reciprocating, continuous motion, said first means for driving comprising a first crank attached perpendicularly to said drive shaft, a first connecting rod operatively attaching said first crank and said first top blade;
- second driving means for driving said second top blade along said top right side of said bottom plate in a reciprocating, continuous motion, said second means for driving comprising a second crank attached perpendicularly to said drive shaft and disposed at a 180° degree angle with respect to said first crank, a second connecting rod operatively attaching said second crank and said first top blade;
- wherein
- said first number of teeth and said second number of teeth engage said plurality of teeth on said support plate to thereby cut vegetation between said teeth, as said top blades are driven in the reciprocating continuous motion;
- and
- said first driving means and said second driving means are configured to drive said first top blade and said second top blade in continuous, opposite directions with respect to one another.
Dependencies are inferred from the claim text.