He is placed in a room where he must stay, unless someone frees him.
The Cornish knights (who in Arthurian romance are always represented as hopeless cowards), dare not contest his claim but Tristan challenges him to single combat, slays him and frees Cornwall from tribute.
And when the short brush is stopped a rod from the shaft frees a spring detent which keeps the drum in position and tips it over.
When the poise arrives at zero it frees the clutch which connects the pulley and the sprocket wheel, and the machine is then ready for the next load.
"In the seventh place, try, by the frequent thought of death," the Rhetor said, "to bring yourself to regard it not as a dreaded foe, but as a friend that frees the soul grown weary in the labors of virtue from this distressful life, and leads it to its place of recompense and peace."