Double Action

Double action may refer to:

  • Double-action, a system in firearms where the trigger both cocks and releases the hammer
  • Double-acting cylinder, a system in steam and internal combustion engines
  • Simple expansion, a system in steam engines and their accessories where a piston has the ability to both push and pull a connecting rod

Famous quotes containing the words double and/or action:

    “Art has a double face, of expression and illusion, just like science has a double face: the reality of error and the phantom of truth.”
    —René Daumal (1908–1944)

    “Power is action; the electoral principle is discussion. No political action is possible when discussion is permanently established.”
    —Honoré De Balzac (1799–1850)