Grass cutting blades

• US 4,058,959 A
• Filed: 10/06/1975
• Issued: 11/22/1977
• Est. Priority Date: 10/06/1975
• Status: Expired due to Term

• Current Assignee: Forrest G. Hurst, Robert J. Moss
• Original Assignee: Forrest G. Hurst, Robert J. Moss
• Inventors: Moss, Robert J., Hurst, Forrest G.
• Primary Examiner(s): Eskovitz, Jay N.
• Application Number:
  US05/620,152
• Time in Patent Office: 778 Days
• Field of Search: 56/12.7, 56/295, 56/256, 30/DIG. 5, 30/347
• US Class Current: 56/295
• CPC Class Codes: A01D 34/736 Flail type

Abstract

A grass cutting and trimming blade having a rigid main bar adapted for rotation either in a vertical or horizontal plane, a pair of wire forms for cutting elements removably attached one at one end of said main bar and one at the other end of said main bar, each of said cutting elements adapted for cutting grass upon being rotated by a power source and each cutting element being yieldable in the plane of rotation to prevent breakage thereof when striking an object.

Claims

1. A grass cutting blade comprising a main bar of thin flat metal, a grass cutting element one on each end of said main bar, each of said cutting elements being both removably and pivotably attached to said main bar, each of said cutting elements being made of a spring wire material having preformed loops in the wire, said cutting elements being also provided with legs extended in a plane parallel to the plane of said main bar and said loop section said legs having end sections which are bent substantially 90°

away from the plane of said main bar, an anchoring rivet on each end of said bar one for each of said cutting elements, each of said elements being rotatable around its anchoring rivet from a folded non-operative position to an operative position with the legs of each element extending beyond the extreme ends of said main bar.

2. A grass cutting blade adapted for rotation in a vertical plane by an edger trimmer comprising a main bar of thin flat material, means for attaching said bar to a power source, a pair of grass cutting elements one at each end of said main bar, said cutting elements consisting in a spring wire form with each being both removable and pivotally attached to said main bar, each of said elements provided with extended legs bent outwardly from the plane of said main bar for a cutting operation by said extended legs in a horizontal plane, while said bar is rotating in a vertical plane and means for locking said cutting elements in a folded non-operative position.

3. A grass cutting blade comprising a main bar, mounting rivets on said bar, one positioned at each end of the same, each rivet having a shank portion with an enlarged head, a pair of cutting elements one for each rivet, each of said cutting elements consisting in a spring wire bent upon itself to form a partially closed loop of such diameter as to permit said loop by being stretched as a spring to grip the shank portion of its rivet beneath the head thereof yet permit the same to be moved in pivotal action when being acted upon by some outside force, said wire being also bent into a second partially closed loop contiguous with said first mentioned loop and of a diameter slightly larger than the diameter of the head of said rivet to permit removal of said cutting element from said rivet when said second loop is moved into coincidence therewith, the legs of said cutting elements being bent in a substantially 90°

plane away from their normal mounting plane on said main bar.