It was mounted on a Ditmar Maxim 501 , manufactured in 1941. The lamp otherwise showed no structural modifications that might suggest the use of a fuel other than kerosene.
Hi all I think this ceramic is not original, it is designed to receive the type of mantle you see in the photo. They were also mounted on natural gas lamps this one is a Mariva
@Reinhard Interesting. I have similar stuff attached to Petromax 823. It seems to be original because fits to the unussually narrow J tube. Pics attached including comparison to regular Px mixing chamber. I am not sure how I am going to attach a mantle there. Maybe using ceramic like posted by @Michel , but these are quite expensive and I am not even sure if will fit to 100 years older parts... Any ideas are welcome. all the best, Piotrek
At least some Petromax lanterns could be fitted with a holder for rigid mantles upon customer request. I can't remember which catalog I saw it in, but this invention did not catch on for some reasons... Erik
I also have a Ditmar lantern with this kind of burner. It seems that these lanterns were prepared to be fitted with rigid mantles. However, I haven't seen this option in the Ditmar catalogues, contrary to Petromax catalogues. I think that this option was not so common because the mantles can fall off easily, especially in rugged mobile applications. I would always prefer soft mantles in lanterns, but rigid mantles were often used in stationary applications such as hanging lamps or street lamps because they can be changed more easily.
This is what the complete lamp with the long burner looked like when I received it . My first thought was: a burner for rigide mantles that screw on , and perhaps for alcohol because of the few but large holes.
A lantern for alcohol would also have the air restrictor and a jet with larger orifice as shown here at my Ditmar 509. Unfortunately I don't recall to which lantern the rigid mantle burner was mounted when I received it in around 2017, and since it looks quite differently than yours I believe that it once belonged to a gas lamp and not to a Ditmar. But the threads fit the Ditmar (and fortunately also my Wiktorin hanging lamp, which missed the burner when I akquired it).
The burner may originalen have belonged to a alcohol-fueled version of a 501. That ' s what I meant !
