DE63322C - Yeast propagator - Google Patents

Description

IMPERIAL

PATENT OFFICE.

FRANZ PEST in BERLIN. Yeast propagator.

The yeast propagation apparatus shown in the accompanying drawing with combined sterilization and Gährcylinder differs from the already existing constructions in many Points; so in particular through the peculiar ventilation device, which at the same time represents the place of an agitator, furthermore by the arrangement in the connection of the Yeast vessel 'with the main vessel. Furthermore, by attaching a water shower easy cleaning of the main vessel after each emptying.

The apparatus consists of the large sterilization and fermentation vessel A and the yeast vessel B. A is a copper cylinder with a solid, conical bottom and a flat, arched lid that can be screwed off. A number of pipes open into A, through which air, wort, water and steam can be supplied. Attached to the Deekel is the curved exhaust pipe a, through which the air BEZW. the carbon dioxide produced during fermentation can escape; b is a water supply pipe that ends with shower c.

Inside A is the snake d, through which you can steam or. Can circulate water for the purpose of heating BEZW. Cooling of the wort.

On the lower part of the cylinder jacket is the beer drainage valve χ , through which the fermented wort is drawn off at the end of fermentation. The conical bottom ends at the top in a larger, cross-shaped piece of pipe that carries four taps. The pipe is connected to the wort pipe through m , and to the steam pipe through k.

The side walls of the cone are pierced by the three ventilation pipes g ¹ g ² g ^s; they only reach a very short distance into the interior of A and are bent to the shape of a knee. Their openings are so placed that when the air is ventilated, the wort in the apparatus is swirled up vigorously both on the periphery and in the axis of the cylinder. Through which the wort also displaced from ^l g and ² g incoming air in a swirling motion, h is a stub provided with a valve, which by means of a rubber hose p ² with the Hefengefäfs B is connected. The pipes g ^1, g ² and g ³ combine at g to form a pipe, in the extension of which we see the wort stand pipe f and the air filter η drawn. The two nozzles e ¹ and e ' ² connect the wort stand pipe with A. The cock ο ¹ is through a rubber hose ρ ^x respectively. a narrow pipe connected to B. The cock ο ² comes into function when steaming out the wort standpipe or. of the pipes gg ^l g ² and g ³ , and samples of the fermenting wort can also be taken through the same. B is a larger copper tank with three nozzles. The sowing yeast can be introduced through the nozzle r.

Handling the device:
The steaming out. First, cock i and / are closed, k and m opened and the steam passed through the wort pipe m, m is then closed again, i and α opened. The steaming out of A takes approx. Y ₂ hours and care is taken during this time.

bear that through all openings and pipelines at both A and B the steam temporarily flows through. Finally only α η ¹ and r remain open. While the steam is still flowing out weakly at n ^l , the filter η is put on. The cock η 'is then closed immediately afterwards, and shortly afterwards the rubber hose r with a metal stopper. Now w ^{1 is} opened and, while steam is still emerging from α , air is introduced into apparatus A ^{by way of O 1} P ¹ q Bp ^ h . Gradually the steam supply is increasingly reduced by k and k schliefslich completely closed. In the meantime, the vessel B will have already cooled down. The air is now fed into apparatus A in a different way. Close tap h and o ¹ and open e ¹ . The air now enters the device through n ^l e ^l and escapes through a. The apparatus can now be filled with wort (approx. 200 l). Before that, the condensation water is drained from A by briefly opening /; You also close all the taps on apparatus A, except for α and i. Is the spice no longer remains hot enough to cook them on again by passing through the coil d steam. Shortly after the start of boiling, the wort begins to be aerated; at the same time the steam for the snake is turned off. The air enters on the way nfgg ^ g ' ² and g · ³ . So you ventilate for about an hour, then you only lead the air into the apparatus on the way n ^l e ^{l .;} the wort comes at rest and part of the excretions present in it settles on the bottom and can be removed by briefly opening the tap i and /.

Afterwards, the entire amount of wort is gradually cooled (cold water is fed in through coil d and spray ring s) with simultaneous aeration. The latter can be done here again by gg ¹ g ^% and g ³ .

While the wort is cooled down to about 10 ° R., B can be inoculated with the sowing yeast. The inoculation flask is connected to r . The overflow of the yeast to B takes place somewhat slowly, since at the same time the air displaced by the yeast liquid has to escape after the inoculation flask. Finally, r is withdrawn from the inoculation flask and closed with a metal stopper.

If you want to push the yeast over to A , you have to o ¹ q and h. to open. During fermentation, B remains empty and taps h and o ^{1 are} closed.

After inoculating the wort with yeast, you only ventilate from below for a short time; later, until the fermentation starts, the air is only allowed to enter ^{through e 1.} Finally, the air is switched off completely by closing the tap e ¹ .

At the end of the fermentation, air is again placed on the wort by opening the tap e ¹ and pressing the beer through χ out of the apparatus. As soon as foam comes in, you close valve x.

The beer that remains, together with the lees yeast, is whirled up from below by air and partly pressed to B , partly discharged through i and /. The amount that has spilled over to B can be estimated approximately by hanging B on a spiral spring hand scale. By closing taps h and o ¹ , apparatus B is disconnected from the main apparatus. After A has been emptied, shower c is set to function and the wall and pipe coverings are rinsed off. Afterwards, steaming and filling of apparatus A are started again in the manner described above.

Claims (2)

Patent Claims: ι. On a pure breeding apparatus, the arrangement of the ventilation device in such a way that that the air outlet openings respectively against the floor. the walls of the fermentation cylinder are so directed that, when aired, the wort, which is set in regular circulation, removes the yeast from the wall and peeled off the floor. 2. In connection with 1. the application of a conical bottom. 1 sheet of drawings.