Parabrahm Orgue de Schiedmayer & Weigle

A True discovery this week. From 1908 the Parabrahm Organ was invented by Paul Schmidt, Schiedmayer Pianofortefabrik (with his Meisterharmonium Domintor) and Organ builder Weigle, and the word has been for more than 100 years, only THREE were built.
During my study however, I found there was a FOURTH copy built. Read all about it on my website on this page:



http://www.harmoniumnet.nl/schiedmayer-dominator-parabrahm-1.html

Quite interesting ! I don't get all the details because of my poor german, but this seems to be some extraordinary instruments !
Is there any device to keep the pipes and the harmonium part in tune ?

Très intéressant ! Je ne saisis pas tout car je ne lis pas l'allemand, mais ces instruments semblent être (avoir été ?) extraordinaires !
Y avait-il un quelconque dispositif pour maintenir les tuyaux et les anches accordés ?