Adjustable dredging and trenching apparatus
OwnerJulius H. Leitzinventor
Life of this patent
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Abstract
A stowable agitation trenching apparatus for use on a vessel such as a dredge or barge includes an adjustable, vertically extendable and retractable elongate leg slidably disposed within a mounting bracket pivotally secured to the vessel for selectively disposing a distal end of the leg at a plurality of positions underneath the vessel. An agitation producing propeller is disposed adjacent to the distal end and is movable therewith for producing an eroding current of water against the bottom surface of a body of water to be trenched or dug. The vertically extendable and retractable elongate leg is arranged to be raised and pivoted in the mounting for substantially horizontal stowage on the vessel.
Claims24
A stowable agitation dredging and trenching apparatus for use on a vessel comprising:
- elongate leg means;
- a housing adapted to be pivotally mounted on the vessel for slidably receiving said leg means, said housing adapted to be swung between a position permitting said leg means to be vertically extended or retracted and a position for substantially horizontally stowing said leg means;
- power driven agitation means disposed adjacent to a distal end of said leg means for producing an eroding current of water against the bottom surface of a body of water;
- and
- impeding means mounted on said leg means including a spud foot and means selectively operable for shifting said spud foot relative to said leg means for penetration into the bottom surface.
In combination, a vessel and a stowable dredging and trenching apparatus comprising:
- elongate leg means;
- a housing pivotally mounted on said vessel for slidably receiving said leg means, said housing being swingable between a position permitting said leg means to be vertically extended and retracted and a position for substantially horizontally stowing said leg means;
- power driven agitation means disposed adjacent to a distal end of said leg means for producing an eroding current of water against the bottom surface of a body of water;
- and
- impeding means mounted on said leg means including a spud foot and means selectively operable for shifting said spud foot relative to said leg means for penetration into the bottom surface.
A stowable agitation dredging and trenching apparatus for use on a vessel comprising:
- elongate leg means;
- a housing adapted to be pivotally mounted on the vessel for slidably receiving said leg means, said housing adapted to be swung between a position permitting said leg means to be vertically extended or retracted and a position for substantially horizontally stowing said leg means;
- power-driven agitation means disposed adjacent to a distal end of said leg means for producing an eroding current of water against the bottom surface of a body of water;
- fairleads mounted on said leg means;
- impeding means mounted adjacent said leg means including chain means inserted through said fairleads;
- and
- means operable for selectively paying out lengths of said chain means to be dragged behind said agitation means in the bottom surface.
In combination, a vessel and a stowable dredging and trenching apparatus comprising:
- elongate leg means;
- a housing pivotally mounted on said vessel for slidably receiving said leg means, said housing being swingable between a position permitting said leg means to be vertically extended and retracted and a position for substantially horizontally stowing said leg means;
- power-driven agitation means disposed adjacent to a distal end of said leg means for producing an eroding current of water against the bottom surface of a body of water;
- fairleads mounted on said leg means;
- impeding means mounted adjacent said leg means including chain means inserted through said fairleads;
- and
- means operable for selectively paying out lengths of said chain means to be dragged behind said agitation means in the bottom surface.
Dependencies are inferred from the claim text.