Mowing device
AssigneeJames E. Cummings
InventorFrancis J. Lawson
Life of this patent
Estimating the term…
Abstract
A two-piece cutter member for mounting on a sickle bar has a rigid thin support element arranged for relatively permanent attachment to a sickle bar, and a flat planar pyramid-shaped spring metal blade. A portion of the blade provides at least one bridge or loop for encircling the support element and holding the blade on the support element. A section of either said the portion or the support element is displaced with respect to the support face to releasably hold the blade on the support when the blade is fully positioned on said support element.
Claims30
A two-piece cutter member for mounting on a sickle bar comprising a rigid thin support element arranged for relatively permanent attachment to a sickle bar, a flat planar pyramid-shaped spring metal blade having a cutting face and a support face, a portion of the blade being displaced away from the support face to provide at least one loop for encircling said support element and holding said blade onto said support element, an opening in said support element, a portion of said one loop being bent toward the plane of the blade and positioned to engage said opening in the support element to releasably hold said blade on said support when said blade is fully positioned on said support element, other portions of said blade being displaced from the plane of the blade to engage edges of the support element to resist sideways displacement of the blade during use.
A two-piece cutting device for mounting on a sickle bar, comprising a rigid, thin support element arranged for relatively permanent attachment to the sickle bar;
- a flat, planar metal blade having a cutting face and a support face wherein the cutting face is displaced away from the support face, said blade having at least one loop portion for encircling said support element and holding said blade on said support element, said loop portion being bent toward the plane of the blade and positioned to engage said support element to releasably hold said blade on said support element when said blade is fully positioned on said support element.
A two-piece cutting device for mounting on a sickle bar, comprising a rigid, thin support element arranged for relatively permanent attachment to the sickle bar;
- a flat, generally planar metal blade having a support face for engaging the support element and an opposite face, and wherein the opposite face is displaced away from the support face, said blade having at least one loop portion for encircling said support element and holding said blade on said support element, a section of either said loop portion or said support element being displaced with respect to the support face to releasably hold said blade on said support element when said blade is fully positioned on said support element.
A triangular shaped blade element for mounting on a relatively rigid flat triangular support element attached to a sickle bar, said blade element being formed of a spring metal sheet and having at least one loop portion for encircling said support element, said loop portion being flexible so as to move away from contact with said support element as it is slid on said support element and reaches a point where a section of either said loop portion or said support element is displaced with respect to the area of contact between the loop portion and the support element, said flexible loop portion returning to its original shape when the blade is fully seated and the displaced portion acts to releasably hold the blade on the support element.
Dependencies are inferred from the claim text.