Excavating – Rotary digger – Endless conveyor
Patent
1977-02-18
1978-08-15
Crowder, Clifford D.
Excavating
Rotary digger
Endless conveyor
E02F 324
Patent
active
041062264
ABSTRACT:
A bidirectional excavator capable of excavating a predetermined swath of earth while moving in a forward or rearward longitudinal direction. The excavator includes a rotatable excavator wheel that operates to disengage and move loosened earth to a centrally located transverse conveyor belt. The belt carries the loosened material to one side of the excavator. Retractable crumbing blades are located on both forward and rearward sides of the excavator wheel. Each is selectively operable to be lowered to an operative position adjacent to the wheel with regard to the selected direction of movement for the machine. The lowered crumbing blade serves to gather and maintain material sloughed from the wheel against the wheel so it may be eventually carried to the discharge conveyor. When it is desired to move the excavator in an opposite direction, the operative crumbing blade is retracted and the previously inoperative plate is extended to its operative position. Design of the excavator wheel is such that it may be rotated in the same direction regardless of directional movement of the machine. Thus, the machine is capable of moving along an elongated path in a forward direction taking a prescribed swath of earth as it goes, and subsequently moving in an opposite direction in order to take the next successive swath.
REFERENCES:
patent: 114395 (1871-05-01), Boas
patent: 199106 (1878-01-01), Randolph
patent: 1911615 (1933-05-01), George
patent: 3690023 (1972-09-01), Peterson
patent: 3916544 (1975-11-01), Swisher, Jr. et al.
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