Rocks & mirror
WÄRTSILÄ
Encyclopedia of Marine and Energy Technology

Bell crank

marine

A hydraulically-operated mechanism which folds the second pair of covers in a four-panel folding hatch cover. The bell crank consists a pair of hydraulically-operated arms which engage in a lug or roller on the first panel of the trailing pair. The bell crank then turns the panels to their stowage position.

Bell crank
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