| CPC B07B 1/15 (2013.01) [E02F 3/407 (2013.01)] | 19 Claims |
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1. An agitating shaft for use with an agitating screen of a mechanical screening bucket, the agitating shaft comprising:
a shaft member;
a spacer rail comprising:
a base comprising a mounting surface configured to engage the shaft member;
a plurality of protrusions extending in a direction opposite the mounting surface; and
a plurality of recesses formed between the plurality of protrusions;
a plurality of first agitating discs;
a plurality of second agitating discs; and
a plurality of circular spacer discs, wherein:
the plurality of first agitating discs and the plurality of second agitating discs are coupled to the shaft member and the spacer rail such that each of the plurality of first agitating discs and each of the plurality of second agitating discs engage only one recess of the plurality of recesses of the spacer rail with each side of each of the plurality of first agitating discs and each of the plurality of the second agitating discs retained between two protrusions extending on each side of the one recess; and
the plurality of circular spacer discs are coupled to the shaft member and the spacer rail such that each of the plurality of circular spacer discs engage only one protrusion of the plurality of protrusions of the spacer rail, locating each circular spacer disc between each first agitating disc and each second agitating disc.
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