antique gas space heater 'radiants'

New CW member Treemusic showed us their old New Method gas heater earlier today

https://www.collectorsweekly.com/stories/302288-new-method-115?in=all

and I replied that it was missing its 'radiants' and tried to explain what those were. Since a picture's worth 1K words and all, plus I so happen to have a similar heater that needed saving, here's pics of its radiants that I took today. (too dark for pics of the heater itself, they'll come later) There are six matching ones here though at least half are broken somehow, enough of the pieces of those still remain that they all fit back onto my heater and sit/look correct despite the way they look here in a box.

The two closest to my cigarette lighter (for size reference) in these pics are the intact ones, they're turned a couple different ways to hopefully show how they're open at their wider bottom end and closed at the top with a triangular profile. Far RH side is turned so its backside is visible, these are marked with their maker's info "THOMPSON NO.4" which matches the maker's name of my heater.

When all assembled these sit directly over the gas burner with their front edges held against a lip there, the fire actually burns up inside them which is what all the little 'nipples' in there are for -- they and indeed much of the rest of the radiants themselves (at least their bottom portions) will become red hot and in fact "radiate" heat out from the heater when it is in use, those little nipples just increase the amount of surface area to get red hot and increase the efficiency.

This set all has a brownish tint/color to their fronts -- most radiants I've seen are just clay-white -- I don't know if these were always that color (fancy?!) or if they've just grown particularly dirty from lots of use.