Patent ID: 6186245
Filing Date: 2001-02-13
Classification: A01B

Abstract:
A combination of a soil-working part and a mounting part to be provided on a plough body, said working part having a pair of opposed working tips and being intended to be mounted on said mounting part so that one of said tips is an outboard tip which projects from the mounting part so as to be capable of carrying out a soil-working operation in use of the plough body, and the other of said tips is an inboard tip, in which:(a) the working part has first and second modes of adjustment relative to the mounting part when tip wear occurs;(b) the first mode of adjustment can be carried out when reversal of the tips is required whereby the worn outboard tip becomes the inboard tip, and the inboard tip becomes the outboard tip;(c) the second mode of adjustment can be carried out when a worn outboard tip is required to be moved in a direction outwardly of the mounting part to compensate for tip wear;(d) a single fastener is operative to connect the working part to the mounting part, said fastener when tightened clamping the parts together and when partly released defining a pivot axis which allows rotation of the working part so as to reverse the tips, when the first mode of adjustment is required;(e) a single mounting hole is formed in a first of said parts, and first and second mounting holes are formed in a second of said parts and which are axially spaced from each other with respect to the longitudinal axis of the working part which extends between the opposed tips; in which the fastener is receivable by said single mounting hole and is initially mountable in the first of said mounting holes when the working part is installed, and is mountable in the second of said mounting holes when tip wear requires increased projection of the outboard tip when the second mode of adjustment is carried out; and,(f) a set of four pegs and a set of co-operating recesses are provided on said parts and which are able to co-operate in order to couple the parts together against rotation about the axis of the fastener when the parts are clamped together, the arrangement being such that(i) each of the four pegs is receivable by a respective recess in each position of tip reversal which can be taken-up by the first mode of adjustment, and(ii) two of the pegs can be received each by a respective recess when the second mode of adjustment is carried out, in which the fastener is moved from the first mounting hole to the second mounting hole in order to increase the projection of a worn tip from the leading edge of the mounting part.