Dredging apparatus with spring-supported bucket ladder

Details Dredging apparatus with spring-supported bucket ladder Dredging apparatus with spring-supported bucket ladder

1977-06-10

1979-01-09

Crowder, Clifford D.

Excavating

Peat excavators

37 72, E02F 316

Patent

active

041331206

ABSTRACT:
Dredging apparatus has a bucket ladder pivotally mounted thereon for vertical swinging movement about a horizontal axis. To stabilize the bucket ladder, the free end of the ladder is supported by a pulley and cable assembly which at its upper end is supported from the free arm of a lever pivotally mounted on the pontoon of the dredging apparatus. A hydro-pneumatic or pneumatic spring is pivotally mounted at one end on the pontoon and mounted for pivotal and sliding movement on and along a downwardly concave path on the lever at its other end, thereby to vary the point of application and hence the magnitude and direction of the spring force on the lever.

REFERENCES:
patent: 3734564 (1973-05-01), McKay et al.

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