These torture devices were something I have never seen before, but thought were rather interesting.
This device was used for pirates. People would put captured pirates in their to show a warning to other pirates of the consequences.
Head cages were used to hold the head into one place while the prisoner was tortured. Their arms and legs would be tied down as well.
The Thumbscrew was a milder form of torture. They would use this on prisoners when they needed a confession or more informartion.