In the original story, String of Pearls: A Romance, published in 1846, Sweeney Todd was a demon barber who used his razor to torture his victims before turning them into meat pies.
The Iron Maiden is a man-sized iron cabinet used for torture. Some historians argue that many were created by museums for the commercial draw of the macabre.
Lawrence of Rome was martyred on a gridiron by the Roman emperor Valerian. During the torture he pointed out that it was time to flip him over so he could be evenly cooked.