Benthic dredge construction
AssigneeTrippensee Corporation
InventorsWilliam H. Phillips, Bernhard W. Koepke
Life of this patent
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Abstract
A benthic dredge has a hollow body provided with closures at its upper and lower ends which are movable between open and closed positions. The closure at the lower end of the body is in the form of clamshell jaws which are pivotable about an axis located between the upper and lower ends of the body. Movements of the jaws are controlled by vertically reciprocable operating members and a force transmitting toggle linkage. No part of the linkage extends at any time beyond the confines of the body and the linkage is of such construction as to be capable of applying substantial closing force on the jaws as they approach their closed position.
Claims18
A dredge construction comprising a hollow body having a top and a bottom;
- a pair of clamshell closures;
- means pivoting said closures on said body for rocking movements between first and second positions in which said closures respectively open and fully close said bottom, said closures being rockable about an axis located at a level between said top and said bottom;
- movable operating means;
- and rigid force transmitting means coupling said operating means and said closures for rocking said closures between said positions in response to movements of said operating means, the coupling between said force transmitting means and said closures occupying a level below that of said axis when said closures are in said first position.
A dredge construction comprising a hollow body having a top and a bottom;
- a pair of clamshell closures pivoted on said body for rocking movements about an fixed axis between first and second positions in which said closures respectively open and fully close said bottom;
- operating means;
- means mounting said operating means for vertical reciprocating movements;
- rigid force transmitting means pivotally connecting said operating means to said closures for effecting rocking movements of said closures in response to movements of said operating means;
- anchor means carried by said body;
- retaining means carried by said operating means;
- and releasable latch means reacting between said anchor means and said retaining means for latching said closures in said first position.
Dependencies are inferred from the claim text.