초록 ▼

A subsoil applicator has an upright shank provided with a leading soil-slicing edge and a pair of opposite sides. At the bottom of the shank, a pair of soil lifting wings are provided, presenting a pair of outermost wing edges that diverge rearwardly from the lowermost and forwardmost point of the s

A subsoil applicator has an upright shank provided with a leading soil-slicing edge and a pair of opposite sides. At the bottom of the shank, a pair of soil lifting wings are provided, presenting a pair of outermost wing edges that diverge rearwardly from the lowermost and forwardmost point of the shank to the rear extremity of the applicator. The wings are generally relatively thin and flat except for a thickened portion across their rear extremity making an upright, rearwardly facing rear wall. A pair of laterally spaced discharge outlets are located in the rear wall and communicate with an internal tubular passage within the shank for delivering substance down into the soil behind the wall as the applicator advances through the soil. The discharge outlets are located in undercut portions of the rear wall, while top, upwardly facing surfaces of the thickened portion are convexly curved to improve soil flow and provide extra protection against premature wear for the internal substance passageways.

대표청구항 ▼

1. A subsoil applicator comprising:an upright shank having a leading, generally upright edge and a pair of opposite sides extending rearwardly from said leading edge; a pair of wings adjacent the lower end of said shank projecting laterally outwardly from opposite sides of the shank, said wings pres

1. A subsoil applicator comprising:an upright shank having a leading, generally upright edge and a pair of opposite sides extending rearwardly from said leading edge; a pair of wings adjacent the lower end of said shank projecting laterally outwardly from opposite sides of the shank, said wings presenting a pair of laterally outermost edges that diverge rearwardly from the leading edge of the shank to a transversely extending rear extremity of each wing, each of said wings having an upwardly projecting boss extending along and disposed forwardly adjacent its rear extremity, said boss having a generally upwardly facing, convexly upper surface that extends outwardly from the corresponding side of the shank to the outermost edge of the corresponding wing; and tubular structure for discharging a substance into the subsoil behind the rear extremity of the wings. 2. A subsoil applicator as claimed in claim 1,said wings having a rearwardly facing rear wall extending across the rear of the applicator and interconnecting said outermost edges of the wings, said tubular structure including rearwardly facing discharge outlets in said rear wall. 3. A subsoil applicator as claimed in claim 2,said rear wall including an upper overhanging portion and a lower undercut portion to define a lower transverse recess across the rear of the applicator, said discharge outlets being located in said undercut portion. 4. A subsoil applicator comprising:an upright shank having a leading, generally unright edge and a pair of opposite sides extending rearwardly from said leading edge; a pair of wings adjacent the lower end of said shank projecting laterally outwardly from opposite sides of the shank, said wings presenting a pair of laterally outermost edges that diverge rearwardly from the leading edge of the shank to a transversely extending rear extremity of each wing, each of said wings having an upwardly projecting boss extending along and disposed forwardly adjacent its rear extremity, said boss having a generally upwardly facing convex upper surface that extends outwardly from the corresponding side of the shank to the outermost edge of the corresponding wing; and tubular structure for discharging a substance into the subsoil behind the rear extremity of the wings, said wings having a rearwardly facing rear wall extending across the rear of the applicator and interconnecting said outermost edges of the wings, said tubular structure including rearwardly facing discharge outlets in said rear wall, said shank further including a generally upright rear edge, said tubular structure further including an upright, internal passage in said shank forward of said rear edge and communicating with said discharge outlets. 5. A subsoil applicator as claimed in claim 4,said rear wall including an upper overhanging portion and a lower undercut portion to define a lower transverse recess across the rear of the applicator, said discharge outlets being located in said undercut portion. 6. A subsoil applicator comprising:an upright shank having a leading, generally upright edge and a pair of opposite sides extending rearwardly from said leading edge; a pair of wings adjacent the lower end of said shank projecting laterally outwardly from opposite sides of the shank, said wings presenting a pair of laterally outermost edges that diverge rearwardly from the leading edge of the shank to a rearwardly facing rear wall extending across the rear of the applicator and interconnecting said outermost edges of the wings, said rear wall having rearwardly facing discharge outlets therein; and tubular structure communicating with said discharge outlets for discharging a substance into the subsoil behind said rear wall, said rear wall including an upper rearwardly projecting overhanging portion and a lower forwardly disposed undercut portion to define a lower transverse recess under the overhanging portion across the rear of the applicator, said discharge outlets being located in said undercut portion. 7. A subsoil applicator comprising:an upright shank having a leading, generally upright edge and a pair of opposite sides extending rearwardly from said leading edge; a pair of wings adjacent the lower end of said shank projecting laterally outwardly from opposite sides of the shank, said wings presenting a pair of laterally outermost edges that diverge rearwardly from the leading edge of the shank to a rearwardly facing rear wall extending across the rear of the applicator and interconnecting said outermost edges of the wings, said rear wall having rearwardly facing discharge outlets therein; and tubular structure communicating with said discharge outlets for discharging a substance into the subsoil behind said rear wall, said shank further including a generally upright rear edge, said tubular structure further including an upright, internal passage in said shank forward of said rear edge and communicating with said discharge outlets. 8. A subsoil applicator as claimed in claim 7,said rear wall including an upper overhanging portion and a lower undercut portion to define a lower transverse recess across the rear of the applicator, said discharge outlets being located in said undercut portion. 9. A subsoil applicator as claimed in claim 6,each of said wings having an upwardly projecting boss extending along and disposed forwardly adjacent said rear wall, said boss having a generally upwardly facing, convex upper surface that extends outwardly from the corresponding side of the shank to the outermost edge of the corresponding wing.