hammer break

English

Noun

hammer break (plural hammer breaks)

  1. (electrical) An interrupter in which contact is broken by the movement of an automatically vibrating hammer between a contact piece and an electromagnet, or of a rapidly moving piece mechanically driven.
    • 1903, The Horseless Age (volume 11, page 645)
      […] a form of contact device was adopted of the commutator and brush type, having rubbing contacts only, and doing away with all platinum points and hammer breaks.
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