Respiration apparatus for manual and motor drive according to Ludwig (Cyon IX,4). The excursion of the bellows may by adjusted by the eccentric shaft. Due to the gradual lifting the flow of air decreases and encreases slowly without shocks. The excess air may escape by an adjustable valve. The apparatus is mounted practically below the experimental table; 10,600 kg.
Respirations-Apparat für Hand- und Motorbetrieb nach Ludwig. (Cyon IX, 4.)
Source
Zimmermann, E. 1923. Liste 44: Über physiologische Apparate. Leipzig, Berlin