Earth working – Tool – standard or connection – Non-rectangular – symmetrical type
Patent
1986-04-08
1988-10-25
Stouffer, Richard T.
Earth working
Tool, standard or connection
Non-rectangular, symmetrical type
172753, 172762, 403348, 403353, A01B 1502
Patent
active
047796863
ABSTRACT:
A ploughshare assembly includes a ploughshare and a support for the ploughshare. A pair of opposed internal edges defines a recess in the ploughshare. A holder formation on the support includes a foot portion and a pair of grooves adjacent the foot to receive the aforesaid internal edges of the ploughshare so that when the ploughshare is in its working position on the support the foot engages underside the ploughshare and retains it in place. An aperture in the ploughshare behind the internal edges is wider than the separation of the edges and is dimensioned to pass the foot when the ploughshare is sufficiently rotated relative to the support and so allows detachment of the ploughshare from the support. A resilient latch detachably mounted to the support is releasably positionable to engage a detent face on the ploughshare to prevent excessive forward movement of the ploughshare with respect to the support. The support has a forward face which is divided at a ridge into a pair of surfaces which trail rearwardly outwardly from the ridge. The ridge and surfaces serve to divide the material stream thrown up by the share and substantially smoothly deflecting this srteam over the surfaces and past the support. An embodiment of the ploughshare is of broadly triangular configuration and comprises a body portion and a pair of convergent replaceable marginal strips which are secured to the body portion and define respective forward ground working edges.
REFERENCES:
patent: 1328740 (1920-01-01), Huggins
patent: 2712280 (1955-07-01), Peoples
patent: 4333536 (1982-06-01), Ryan
patent: 4497141 (1985-02-01), Jarby
patent: 4605335 (1986-08-01), Otrusina
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