E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Damiens Bed of Steel.
R. F. Damiens, in 1757, attempted the life of Louis XV. He was taken to the Conciergerie; an iron bed, which likewise served as a chair, was prepared for him, and to this he was fastened with chains. He was then tortured, and ultimately torn to pieces by wild horses. (Smollet: History of England, v. 12, p. 39.)