Earth working implement with tripping mechanism

Claim 2

An earth working implement comprising a frame, said frame including a diagonally extending main frame member and a trip beam adapted to have an earth working tool attached thereto, said trip beam having a body with a downwardly extending rear leg portion behind the main frame member on which said earth working tool is mounted, a bight portion extending forwardly from the rear leg portion disposed above said main frame member and a pair of leg portions, one projecting downwardly from said bight portion in front of the main frame member being pivotally connected adjacent one side thereof and the other leg portion projecting forwardly and laterally from said rear leg portion being pivotally connected adjacent the other side of said main frame member, said pair of leg portions spaced sufficiently apart to resist lateral forces acting on said tool in the working position and pivoting vertically relative to the main frame member when said tool encounters an obstruction and a resilient means on said frame for biasing said trip beam to its working position.

Claim 3

An implement as set forth in claim 1 wherein the axes of said pivotal connections are substantially coaxial and pass through said main frame member.

Claim 4

An implement as set forth in claim 1 wherein said frame includes a generally longitudinally extending bar connected to said main frame member, said one leg being pivotally connected to said bar.

Claim 5

An implement as set forth in claim 3 wherein the axes of said pivotal connections are substantially coaxial and pass through said main frame member.

Claim 6

An implement as set forth in claim 1 including means connected to said trip beam and frame for resiliently biasing said trip beam to said working position.

Claim 7

An implement as set forth in claim 3 including means connected to said trip beam and frame for resiliently biasing said trip beam to said working position.

Claim 8

An implement as set forth in claim 6 wherein said biasing means includes a bellcrank pivotally connected to and disposed above said bar, a link pivotally connected to said bellcrank and trip beam and resilient means connected to said bellcrank and frame.

Claim 9

An earth working implement comprising a frame, said frame including a longitudinal main frame member, a diagonal main frame member connected to said longitudinal main frame member, a plurality of laterally spaced apart and longitudinally extending bars, said bars being connected at one end to said diagonal main frame member, and means connected to said longitudinal main frame member and the other end of said bars for stabilizing said bars, a plurality of trip beams adapted to have an earth working tool attached to each one, each of said trip beams having an inverted generally U-shaped portion with the bight portion thereof disposed above said diagonal main frame member, each of said trip beams also having a bifurcated portion, one leg of said bifurcated portion being pivotally connected to said diagonal main frame member adjacent one side thereof and the other leg of said bifurcated portion being pivotally connected to one of said bars adjacent the other side of said diagonal main frame member so that each of said trip beams is pivotal between a working position and a raised position, and a plurality of resilient means on said frame for biasing said trip beams to their working position.

Claim 10

An earth working implement comprising a frame, said frame including a longitudinal main frame member, a diagonal main frame member connected to said longitudinal main frame member, a plurality of laterally spaced apart and longitudinally extending bars, said bars being connected at one end to said diagonal main frame member, and means connected to said longitudinal main frame member and the other end of said bars for stabilizing said bars, a plurality of trip beams adapted to have an earth working tool attached to each one, each of said trip beams having an inverted generally U-shaped portion with the bight portion thereof disposed above said diagonal main frame member, each of said trip beams also having a bifurcated portion, one leg of said bifurcated portion being pivotally connected to said diagonal main frame member adjacent one side thereof and the other leg of said bifurcated portion being pivotally connected to one of said bars adjacent the other side of said diagonal main frame member so that each of said trip beams is pivotal between a working position and a raised position, and a plurality of resilient means on said frame for biasing said trip beams to their working position.

Claim 11

An implement as set forth in claim 8 wherein each of said biasing means is disposed above said frame whether the associated trip beam is in the working or raised position.