Excavating – Peat excavators
Patent
1978-02-08
1979-12-11
Crowder, Clifford D.
Excavating
Peat excavators
37195, 37DIG1, 37DIG19, 114230, E02F 390
Patent
active
041775856
ABSTRACT:
In order to accurately control the cutter head of a cutter head suction dredger anchored by means of ropes, the tension in at least one of the two longitudinal ropes is measured and the winch of at least one of the two longitudinal ropes is actuated in dependence upon the tension measured in the one longitudinal rope.
REFERENCES:
patent: 2242520 (1941-05-01), Grundborg
patent: 2361404 (1944-10-01), Kalix
patent: 3350798 (1967-11-01), Nelson
patent: 4084334 (1978-04-01), Wolters et al.
de Koning Jan
Steyn Jan
Ballast-Nedam Groep N.V., Amsterdamse Ballast Bagger en Grond (A
Crowder Clifford D.
Scheepswerf en Machinefabriek "De Liesbosch" B.V.
Snyder John P.
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