Ned, why are you such a knob? PPE indeed. Everybody knows that these are springloaded (although the early versions from the FPW were hand cranked), sausage stickers. Used for cooking sausages on a naked (yes naked) flame. keeps the square head away from greasy turns, spitting sausages etc.
And the actual flames obviously.
Don't believe me? Get yourself down to antiques roadshow on that there bbc1 and confront Fiona Bruce about it. Anyway, carry on...