A heretic or blasphemer was bound, his or her mouth forced open with the Mouth Opener. Next, the iron Tongue Tearer was produced, used to grab the most likely uncomfortably twitching tongue within it's rough grippers. Once a firm hold was maintained, the screw could be firmly tightened and the tongue was roughly torn from the prisoner's head.
Trivia & Comment
There were some examples which contained staggered teeth much like pinking shears which shredded the tongue into ribbons.