Ripper assembly for tractor drawn scraper

Claim 1

In an earth working machine which comprises a scraper having a bowl with a back, a bottom, two sides and a forward cutting edge, a spreader forward of said cutting edge and supported by forward extensions of said sides, a tractor forward of said spreader for pulling said scraper and means for raising and lowering a forward end of said scraper relative to said tractor, a ripper assembly which raises and lowers in fixed relation to said spreader and to said cutting edge on operation of said raising and lowering means comprising: a beam suspended generally vertically downwardly fraom said spreader and generally forwardly from said bowl; a plurality of ripper sockets extending laterally from said beam; a plurality of ripper shanks held in said sockets; a means for adjusting the vertical separation between said beam and said spreader; a pair of telescoping means between said beam and said spreader pivotally attached to a respective one of said beam and said spreader; and a pair of arms, each pivotally attached at a first end thereof to a respective side of said bowl and attached at a second end thereof to said beam generally at an end thereof, said pair of arms, sides of said bowl and a pair of telescoping means forming a pair of triangular braces for said ripper assembly.