page_title: Bucket (machine part)
section_title: Clamshell bucket
hierarchical_section_title: Bucket (machine part) / Designs / Clamshell bucket
caption_attribution_description: Coal loading shell grabs, now a street art installation near Cardiff Bay
context_page_description: A bucket is a specialized container attached to a machine, as compared to a bucket adapted for manual use by a human being. It is a bulk material handling component.
  The bucket has an inner volume as compared to other types of machine attachments like blades or shovels.
  The bucket could be attached to the lifting hook of a crane, at the end of the arm of an excavating machine, to the wires of a dragline excavator, to the arms of a power shovel or a tractor equipped with a backhoe loader or to a loader, or to a dredge.
  The name "bucket" may have been coined from buckets used in water wheels, or used in water turbines or in similar-looking devices.
context_section_description: The clamshell bucket is a more sophisticated articulated several-piece device, including two elementary buckets associated on a hinged structure forming a claws-like appendage with an internal volume.
caption: Clamshell buckets from a retired coal-loading crane, now displayed at a dock re-development in Cardiff
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