Showing my age now! I remember a comic of the fifties that ran a series of pictures of various weapons etc, one of wch was this very device! The illustration accompanying it showed an RAF erk making toast over the flames, clearly an opportunistic chap. At the time, wartime weird devices were quite well known to the public, and typically appeared in similar comics for boys, usually accompanied by an imaginative drawing, such as this one.
Afficianados of Wizard, Hotspur, Eagle etc will no doubt remember them.
Alan1.