Digger tooth means for front loader buckets

Claim 1

In combination, a normally forwardly opening excavating bucket with normally substantially horizontally disposed vertically spaced top and bottom walls, a vertically extending rear wall and vertical side walls, said bottom wall having a forwardly projecting forwardly disposed transverse earth-engaging lip, elevator and tipping means connected with the rear wall to raise and lower the bucket and to tip the bucket about a transverse axis, a digger tooth attachment comprising a transversely extending elongate bar normally in working position adjacent said lip and having a plurality of elongate laterally spaced digger teeth fixed thereto and projecting forwardly therefrom, elongate normally horizontally disposed elevator arms at the opposite sides of the bucket with forward ends fixed to related ends of said bar and rear ends fixed to the ends of an elongate transversely extending pivot shaft spaced rearward of the rear wall of the bucket, laterally spaced bearing means rotatably and shiftably support the shaft relative to the rear wall of the bucket, a lever arm on and projecting radially from the longitudinal axis of the shaft, a cylinder and ram drive unit fixed to and extending between the bucket and the lever arm selectively rotating and shifting the shaft to pivot the elevator arms and the bar between said normal working position and a non-working position where said bar is positioned adjacent the top wall of the bucket.