1924 Audos MR 3

In 1924, Hagenuk worked closely with the manufacturer AUER. The name Auer came from the Deutsche Gasglühlicht-Auer-Gesellschaft mbh Berlin, or DGAG. Audos devices had a long history which is described on this page. Read Michael Jung’s story at the end of the webpage. Auer produced both oxygen rebreathers and Rouquayrol-Denayrouze-inspired compressed air diving apparatus

The Hagenuk firm patented many inventions, many of which reflected the spirit of the times, injektor devices and superoxide systems. Remarkable was the invention of the lung controlled breathing systems, patented as early as 1919 and recognised in 1928. Below some of Hagenuk (a combination of HAG = Hanseatische Apparatenbau Gesellschaft and NUK = Neufeldt und Kuhncke) inventions.

DE 299764

Patent claims:

1. device for carrying out the circulation of the respiratory air on respiratory devices operating according to the regeneration principle and serving for use on diving apparatus, characterised in that the respiratory air is guided in reverse movement before and after passing through the chemicals of the regeneration cartridge in such a way that, when water enters the diver’s clothing, the chemicals themselves remain in an air cushion and thus the entry of alkali into the interior of the diver’s body is avoided. The device according to claim 1, characterized in that the breathing air before and after passing through the chemicals is guided through risers (f, I), the upper ends of which are higher than the upper end of the chemicals.

DE 322539

PATENTCLAIM:

1. breathing device ensuring a continuous air circuit by means of an injector and a branch pipe surrounding the injector, characterised in that the said branch pipe surrounds the injector.

2. device according to claim i, characterised in that oxygen is supplied directly to the branch pipe (e) as required through a special pipe.

Device according to claim i or 2, characterized in that the injector is arranged relative to the branch line (e) in such a way that a second injector effect occurs at the upper mouth (g) of the jet funnel in cooperation with the branch line (e).

DE 331364

PATENT CLAIMS 

A method of purifying the breathing air in diving apparatus, characterised in that the breathing air to be refreshed is circulated in a closed circuit, and the room air of the helmet or suit is passed separately through a purification device. a. Method according to claim z, characterized in that the movement of the ambient air through the special purification device is effected by the volume displacement of the air occurring during breathing. 3. apparatus for carrying out the method according to claim x and 2, characterized in that – in the closed circuit of the breathing air, a breathing bag is provided inside a rigid, sealed container, which in turn is connected to the helmet or suit room via an air purification device.

DE 419610

PATENT CLAIMS:

1. Production of oxygen from alkali superoxides which suddenly evolve and can be used, for example, as auxiliary masses for breathing operations, characterised in that anhydrous superoxides are mixed with approximately equivalent quantities of anhydrous low-volatility solid acid anhydrides or residues of water of crystallisation or water of hydration which only release above
15o°. Process according to claim i, characterised in that SiO2″ Wo03″ Mo03, MnO2 and the like are admixed with the superoxide. 3. process according to claim 1, characterised in that technically anhydrous copper sulphate, hydroxides of the alkaline earths and the like are admixed with the superoxide. q… Process according to claim i, characterised in that substances are also added to the masses which react with the substances present with strong heat development. Process according to claim 1, characterised in that carbon of metals or other catalytically active substances are added to the masses. 6. process according to claim 1, characterised in that acid-releasing substances are added.

DE 461873

PATENT CLAIMS:

1. Oxygen breathing apparatus with a breathing bag connected to each of the inhalation and exhalation lines, characterised in that the two breathing bags (L and g) are accommodated in a closed rigid container. 2. Oxygen breathing apparatus according to claim 1, characterised in that one or more adjustable openings (w) establishing the connection with the outside air are provided in the wall of the container (v). Oxygen breathing apparatus according to claim 1 and 2, characterised in that absorption filters (y) are installed in the openings (w) of the container wall.

DE 504376

PATENT CLAIM:

High-altitude breathing apparatus with a supply of pressurised oxygen which is supplied to the apparatus carrier via a pressure-reducing valve and a device which is automatically controlled by a barometer box and regulates the supply quantity, characterised in that the device which regulates the supply quantity consists of a control valve (E) which is arranged downstream of the pressure-reducing valve (B), the diaphragm of which is controlled by the barometer box (F) instead of by a loading spring, so that the pressure of the oxygen inside the control valve (E) increases in the same proportion as the pressure of the outside air decreases.

DE 508555

PATENT CLAIMS:

1. device for reducing the nitrogen hazard in closed-circuit breathing apparatus, in particular in those with lung-automatic oxygen supply, consisting of a switching device, by the actuation of which the apparatus is switched over to an open apparatus in such a way that the inhalation air is taken from the interior of the apparatus, but the exhalation air flows into the open air. 2. device according to claim 1, consisting of a three-way valve (12) in the exhalation line (7), through which, in the open position, the exhalation air is expelled into the open air. A circuit breathing apparatus with a device according to claims 1 and 2, characterised by an automatically closing valve (13) mounted downstream of the three-way valve (12) on the branch pipe leading to the outside.