Underwater self-gripping pile cutting device
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorsWayne R. Tausig, Robert N. Cordy
Life of this patent
Estimating the term…
Abstract
A self-gripping scissors-type shear cutting device for pile cutting. The ar blades of this cutting device have spikes located on the blades which automatically grip and hold the wood pile being cut, thus preventing slipping or squeeze-off of the work to be severed. This device avoids the use or need for additional clamping or gripping arrangements to hold the cutting blades against the pile to prevent slipping.
Claims21
A self-gripping underwater pile cutting device, comprising:
- a. an assembly frame;
- b. a pair of opposing shear blades each having one end thereof pivotally mounted on said assembly frame and operable to be moved in a scissor-type action;
- c. means connected between each of said pair of opposing shear blades and said assembly frame for moving said shear blades in opposing scissor-type movement when actuated;
- d. a plurality of gripping means mounted on and forming a portion of said shear blades;
- said gripping means comprising self-clamping teeth which extend outward beyond the leading cutting edges of each of said opposing shear blades;
- e. said shear blades when in an open position being operable to be positioned adjacent to a timber pile to be cut;
- f. said gripping means portion of said shear blades being operable to grip a timber pile and prevent squeezing-off of the pile during cutting operations as said shear blades are actuated to move to a closed position.
A self-gripping underwater pile cutting device, comprising:
- a. a pair of opposing shear blades operable to be moved in a scissor-type action;
- b. means operable for moving said shear blades in opposing scissor-type movement when actuated;
- c. a plurality of spike-like gripping means mounted on and forming a portion of said shear blades;
- said gripping means extending out beyond the leading cutting edges of each of said opposing shear blades and positioned at an optimum angle to penetrate a timber pile at a tangent to the radial cutting direction of said shear blades;
- d. said shear blades when in an open position being operable to be positioned adjacent to a timber pile to be cut;
- e. said gripping means being operable to grip a timber pile immediately prior to cutting by the leading cutting edges of said shear blades for preventing slipping and squeezing-off of the pile during cutting operations as said shear blades are actuated to move to a closed position.
A self-gripping underwater pile cutting device, comprising:
- a. an assembly frame;
- b. a pair of opposing shear blades each having one end thereof pivotally mounted on said assembly frame and operable to be moved in a scissor-type action;
- c. means connected between each of said pair of opposing shear blades and said assembly frame for moving said shear blades in opposing scissor-type movement when actuated;
- d. a plurality of gripping means mounted on and forming a portion of said shear blades;
- said gripping means comprising self-clamping teeth along the leading cutting edges of each of said opposing shear blades;
- e. said gripping means being mounted both above and below the cutting edges of said opposing shear blades;
- f. said shear blades when in an open position being operable to be positioned adjacent to a timber pile to be cut;
- g. said gripping means portion of said shear blades being operable to grip a timber pile and prevent squeezing-off of the pile during cutting operations as said shear blades are actuated to move to a closed position.
Dependencies are inferred from the claim text.