Hello, thanks to @gieorgijewski I was able to acquire this beautiful laboratory burner by Gustav Barthel, code name Neukryolith. This gasoline burner is featured into the Laboratory Burners catalog present in the library, as well visible in this image from 1912, always shared by @gieorgijewski: This burner could have been equipped with different burner heads, for different purposes… as well with a regular silent head for large quantity water boiling… so a versatile burner. My example is equipped with the regular head, the others I think were optional. The burner head has a skirt to regulate the air/fuel mixture. As visible in the video, while burning gasoline, I am not sure if it is really needed… maybe it can also burn other fuels like alcohol? We’ll see… After a bath in the ultrasonic cleaner of all the small components, I just had to rebuild the NRV of the detachable pump (spring was rusted out and pip needed to be replaced, as well I cut a new lead washer for the valve to pump tube connection), new filler and pump gaskets and that’s it. The graphite packing of the valve was in very good conditions, so I did not replace it. Here it is: A video of it burning: Nicola
An interesting multifunctional device. A lot of possibilities. That air access controller like a Cyclops eye.
@presscall thanks John! @Knee Thanks Stanislaw, I wish I had all the various heads to test them out! Nicola
Here a later edition of Neukryolith, with newer filler cap, later pump handle, simpler tank shape and the introduction of the brass tag with model name soldered on the tank. Valve knob seems made of Bakelite, while on mine example is more like a fiber knob: BARTHEL neukryolith laboratoire.JPG :: Lampe à souder Nicola
An interesting detail: on later edition the filler cap has been moved from center to the side of the tank top… probably to solve a design defect that I have noticed: on mine, if the filler cap is screwed, is impossible to unscrew the pump because the filler cap interferes with the pump wings Nicola
Absolutely brilliant @Nicola Francesco Elia what a fantastic addition you have acquired. A very well made piece of apparatus, with all the attachments could be used for many purposes, even though all designed for the purpose for a laboratory, well done Nichola on a great addition
@Magne Fahre thanks! @mr optimus well, I have a soft spot for Juwel and Barthel products (their design really fits my taste), but I always try to stop myself to enlarge the collection by adding also blow torches and other devices that are not stoves, lamps or heaters… but I already have a nice selection of lab stoves by Barthel and this beauty, I agree, is a nice addition! Cheers, Nicola
This interested me because in the very early part of my time here, I got fascinated by Barthel and Juwel products because of the ways in which their designs, especially the aesthetic aspects such as tank shape, etc. differed from the Swedish and British standard models. Then somehow I lost interest for the same reason; I preferred the standard configurations. All subjective, of course.
@Ed Winskill thanks for your opinion! I perfectly understand your feeling. Let’s say that I like those brands that tried to re invent the wheel and made that successfully. As well I appreciate a lot the French stoves and lamps, a perfect example of not needed over-complication, but always fascinating. I clearly love the original Swedish design, that defined the industry standards. Probably the large amount of clones of the Swedish stoves let me appreciate even more those that tried to be original… maybe here in Europe we have more Swedish clones than you in the US. Same concept I guess applies to Coleman design and all the other american brands that just made things like Coleman that suscitate most probably less interest for this reason… Who knows if in the future I will hate Gustav Barthel! Thanks, Nicola
