Mowing machine
OwnerJames L. Perryinventor
Life of this patent
Estimating the term…
Abstract
A mowing machine of the offset rotary type wherein an assembly of rotary blades is carried by a frame movable along a surface bearing grass or foliage and including an additional rotary mower blade carried by a swinging arm at one end of the machine frame. The swing arm is held in a forward position by biasing springs, and it is moved to a rearward position to direct the additional blade around obstacles such as tree trunks and fence posts by retraction of an hydraulic cylinder, the rod end of which is coupled through a slack coupling to the swing arm. Operation of the hydraulic cylinder can be under manual control by the person driving the mowing machine, and it can be automatic in response to operation of a sensing element carried by the machine frame forwardly of the swing arm for detecting obstacles by contact.
Claims16
In a mowing machine comprising a frame movable along a land surface, mowing blade means carried by said frame and drive means carried by said frame and operatively connected to said mowing blade means:
- a. support arm means movably connected adjacent one end to said frame and extending outwardly therefrom;
- b. additional blade means carried by said arm means and operatively connected to said blade drive means;
- biasing means holding said arm means in a first position;
- d. motive power means carried by said frame and operatively coupled to said arm means for moving said arm means to move said additional blade means around obstacles such as plants, trees, posts and the like;
- and
- e. control means operatively connected to said motive power means for controlling operation of said power means, said control means comprising sensing means for detecting said obstacles and causing operation of said motive power means in response thereto.
In a moving machine comprising a frame movable along a land surface, mowing blade means carried by said frame and drive means carried by said frame and operatively connected to said mowing blade means:
- a. support arm means movably connected adjacent one end to said frame and extending outwardly therefrom;
- b. additional blade means carried by said arm means and operatively connected to said blade drive means;
- c. biasing means holding said arm means in a first position;
- d. motive power means carried by said frame and operatively coupled to said arm means for moving said arm means to move said additional blade means around obstacles such as plants, trees, posts and the like;
- e. control means operatively connected to said motive power means for controlling operation of said power means;
- and
- f. slack coupling means between said motive power means and said support arm means.
In a mowing machine comprising a frame movable along a land surface, mowing blade means carried by said frame and drive means carried by said frame and operatively connected to said mowing blade means;
- a. support arm means movably connected adjacent one end to said frame and extending outwardly therefrom;
- b. additional blade means carried by said arm means and operatively connected to said blade drive means;
- c. biasing means holding said arm means in a first position;
- d. motive power means carried by said frame and operatively coupled to said arm means for moving said arm means to move said additional blade means around obstacles such as plants, trees, posts and the like, said motive power means comprising an hydraulic cylinder operatively connected in an hydraulic circuit having a source of hydraulic fluid;
- and
- e. control means operatively connected to said motive power means for controlling operation of said power means, said control means comprising sensing means for detecting said obstacles and valve means controlled by said sensing means and connected in said circuit in controlling relation to said hydraulic cylinder.
Dependencies are inferred from the claim text.