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Ploughshare assembly having holder rotatably engageable with aperture in ploughshare

  • US 4,779,686 A
  • Filed: 04/08/1986
  • Issued: 10/25/1988
  • Est. Priority Date: 04/09/1985
  • Status: Expired due to Fees
First Claim
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1. A ploughshare assembly comprising:

  • a ploughshare having at least a center member and one forward ground-working edge;

    a support for the ploughshare;

    a recess in said center member, said recess defined by a pair of opposed internal edges on said ploughshare;

    a holder formation on said support including a foot and a pair of grooves adjacent said foot to receive said internal edges of the ploughshare so that when the ploughshare is in its working position on the support the foot engages the underside of the ploughshare and retains it in place; and

    an aperture in said center member of said ploughshare behind said internal edges, which aperture is wider than the separation of said edges and is dimensioned to have said foot pass therethrough when the ploughshare is rotated substantially 180°

    relative to the support and so allow detachment of the ploughshare from the support, said aperture and said recess being so positioned relative to each other, and said internal edges and said grooves being so sized with respect to each other that after said foot is initially passed through said aperture to engage said foot with said ploughshare and said ploughshare is rotated substantially 180°

    , said at least one forward edge of said ploughshare is moved rearwardly toward said grooves and said edges are engaged with said grooves.

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