Action
The curb chain applies pressure to the curb groove under a horse's chin when the curb rein of the bit is used. When the curb rein is pulled, the shank of the bit rotates back towards the chest of the horse and the cheek (upper shank) of the bit rotates forward (since it is a lever arm). The curb chain is attached to the rings at the end of the cheek, so, as the cheek moves forward, the chain is pulled and tightened in the curb groove. Once it comes in contact with the curb groove of the horse it acts as a fulcrum, causing the cannons of the bit mouthpiece to push down onto the horse's bars, thus amplifying the bit's pressure on the bars of the horse's mouth.
Read more about this topic: Curb Chain
Famous quotes containing the word action:
“Let those who go home tell the same story of you:
Of action with a common purpose, action
None the less fruitful if neither you nor we
Know, until the moment after death
What is the fruit of action.”
—T.S. (Thomas Stearns)
“The greatest pleasure I know, is to do a good action by stealth, and to have it found out by accident.”
—Charles Lamb (1775–1834)
“When action grows unprofitable, gather information; when information grows unprofitable, sleep.”
—Ursula K. Le Guin (b. 1929)