Excavating – Rotary digger – Endless conveyor
Patent
1975-07-17
1976-10-26
Eickholt, E. H.
Excavating
Rotary digger
Endless conveyor
299 76, E02F 324
Patent
active
039875644
ABSTRACT:
An excavating and loading system includes an excavating wheel assembly at the front thereof and a plurality of conveyors for conveying material from the excavating wheel assembly upwardly and rearwardly. The excavating wheel assembly includes at least one excavating wheel which is wider than the overall width of the following portion of the system. A supporting and housing apparatus rotatably supports the excavating wheel and includes portions which engage the ends of the excavating wheel. Apparatus is provided for raising and lowering the supporting and housing apparatus to raise and lower the excavating height of the excavating wheel assembly and thereby vary the grade of the excavation. The excavation wheel is provided with means for positively moving the walls of a plurality of buckets between digging and dumping positions.
REFERENCES:
patent: 818215 (1906-04-01), Anderson
patent: 853985 (1907-05-01), Linga
patent: 1455206 (1923-05-01), Howe et al.
patent: 1482904 (1924-02-01), Moore et al.
patent: 1858327 (1932-05-01), Hays
patent: 2748505 (1956-06-01), Turner
patent: 2762141 (1956-09-01), Le Tourneau
patent: 3052455 (1962-09-01), McLaughlin et al.
patent: 3290096 (1966-12-01), Stalker
patent: 3487565 (1970-01-01), Grandin
patent: 3500563 (1970-03-01), Smith
Eickholt E. H.
Unit Rig & Equipment Co.
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