Dictionary
Words, grammatical forms and meanings linked to the ontology.
drop hammer en · NOUN
Meanings
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A heavy weight that is raised and then allowed to drop, as used for piledriving and drop-forging.
On embankments these troughs are supported by piles driven into the ground and recent practice has been to drive them in by a drop hammer, manually operated from a railway wagon, [...].
1961 November, “Talking of Trains: The North Eastern's new rail-mounted piling unit”, in Trains Illustrated, page 646:
Forms