Excavating – Peat excavators
Patent
1978-03-30
1979-05-29
Crowder, Clifford D.
Excavating
Peat excavators
37DIG1, 318626, E02F 388
Patent
active
041563174
ABSTRACT:
A dredge swinging system for automatically swinging a dredge in a leftward and rightward direction a predetermined degree in response to the equalization of electronic compass output signals representative of the position of a dredge and electronic memory output signals representative of the degree to which it is desired that the dredge be swung.
REFERENCES:
patent: 890470 (1908-06-01), Taft et al.
patent: 1792065 (1931-02-01), Bowers
patent: 2461311 (1949-02-01), Cushing et al.
patent: 3471949 (1969-10-01), Cargile, Jr.
Crowder Clifford D.
Maser Thomas O.
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