SHARPENED EDGE YARD TOOL
A yard tool blade is provided with a distal edge to dig a work material, with a surface to support the work material and an adaptor at a proximal end for receipt of a handle. The distal edge is sharpened to an angle within a tolerance of forty to fifty degrees for a reduced thickness to cut the work material. A method for manufacturing the yard tool blade forms a yard tool blade blank. A cutting edge is machined on a distal edge of the yard tool blade blank. The yard tool blade blank is formed into a shaped yard tool blade. The shaped yard tool blade is heat treated after the cutting edge is machined on the distal edge.
1 . A method for manufacturing a yard tool blade comprising:
forming a yard tool blade blank;
machining a cutting edge on a distal edge of the yard tool blade blank;
forming the yard tool blade blank into a shaped yard tool blade; and
heat treating the shaped yard tool blade after the cutting edge is machined on the distal edge.
2 . The method of claim 1 further comprising stamping the yard tool blade blank from flat steel.
3 . The method of claim 1 further comprising machining the cutting edge within a range of forty to fifty degrees.
4 . The method of claim 1 further comprising stamping the yard tool blade blank into a curved yard tool blade before heat treating the shaped yard tool blade.
5 . A yard tool blade manufactured from a method comprising:
forming a yard tool blade blank;
machining a cutting edge on a distal edge of the yard tool blade blank;
forming the yard tool blade blank into a shaped yard tool blade; and
heat treating the shaped yard tool blade after the cutting edge is machined on the distal edge.
6 . A yard tool blade with a distal edge to dig a work material, with a surface to support the work material, and an adaptor at a proximal end for receipt of a handle, wherein the distal edge is sharpened to an angle within a tolerance of forty to fifty degrees for a reduced thickness to cut the work material.
7 . The yard tool blade of claim 6 wherein the yard tool blade has a hardness within a tolerance of thirty-eight to forty-seven HRC Rockwell hardness.
8 . The yard tool blade of claim 6 wherein a radius is formed along the distal edge, that is within a range of 0.006 to 0.025 inches.
9 . The yard tool blade of claim 6 wherein the yard tool blade is curved to provide a curved work material surface.
10 . The yard tool blade of claim 6 wherein the sharpened angle of the distal edge is within a tolerance of forty-three to forty-seven degrees.
11 . The yard tool blade of claim 6 wherein the sharpened angle of the distal edge is forty-two and one-half degrees.
12 . The yard tool blade of claim 6 wherein the yard tool blade comprises a shovel blade for a shovel.
13 . A shovel comprising:
the shovel blade of claim 12 ; and
a handle received in the adaptor.
14 . The yard tool blade of claim 12 wherein the shovel blade comprises a round point shovel blade, a square point shovel blade, a drain spade shovel blade, a trenching shovel blade, or a garden spade shovel blade.
15 . The yard tool blade of claim 6 wherein the yard tool blade comprises a hoe blade.
16 . A hoe comprising:
the hoe blade of claim 15 ; and
a handle received in the adaptor.
17 . The yard tool blade of claim 6 wherein the yard tool blade comprises a rake blade.
18 . A rake comprising:
the rake blade of claim 17 ; and
a handle received in the adaptor.
19 . A post hole digger blade with a distal edge to dig a work material, with a surface to support the work material, and an adaptor at a proximal end for receipt of a handle, wherein the distal edge is sharpened to an angle within a tolerance of thirty to fifty degrees for a reduced thickness to cut the work material.
20 . A post hole digger comprising:
a pair of post hole digger blades of claim 19 pivotally connected together; and
a pair of handles each received in the adaptor of one of the pair of post hole digger blades.