I thrust the warming pan hastily between the sheets at the foot of the bed and shoved it back and forth.
Diana Gabaldon. Outlander (1991)
---
Morose: Let his warming pan be ever cold.
Truewit: A perpetual frost underneath it, sir.
Ben Jonson. Epicoene; or, the Silent Woman (1609)
---
Uncle Silas he had a noble brass warming-pan which he thought considerable of, because it belonged to one of his ancesters with a long wooden handle that come over from England with William the Conqueror in the Mayflower or one of them early ships
Mark Twain. Huckleberry Finn.
---
Lucy Worsley: [...] and how was the baby supposed to have been transported? [...] [in] the infamous warming pan.
BBC. Tales from the Royal Bedchamber (August 5, 2013)
---
"Oh, he's Mr. Hawkshaw's stepson, over at Combe Mary," Winnie answered with a nod. "Mr. Hawkshaw's the vicar there till Mamma's nephew is ready to take the living—what they call a warming-pan.