Clearing attachment for planter shoes

Claim 1

Ground preparation apparatus for use in a method of trash farming, said attachment apparatus comprising: a topsoil opener means for forming a continuous, opened seed-bed in the topsoil as the opener is advanced; a disc-shaped, rotary scraping element provided with a concave, material-deflecting face having an outer, marginal scraping periphery; and mounting means rotatably and adjustably mounting said element on the opener in leading relationship thereto in a plane oblique to the course of travel of the opener for skimming a narrow path of extraneous surface material from the topsoil ahead of the opener to present a strip of clear topsoil for the opener, said opener means having an elongated aperture therein, said mounting means including double-pivot adjusting means including a bracket having a pair of laterally spaced slots communicating with opposite ends of the aperture and a releasable fastener in each slot respectively extending through the aperture, said fasteners each being independently movable longitudinally of the aperture when the fasteners are released and the bracket rotated such that adjustment of the bracket may be effected about either or both fasteners to correspondingly vary the pitch and depth of the obliquely disposed element.