Patent No. 4844932A: Separation Of Wort From Mash

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Today in 1989, US Patent 4844932 A was issued, an invention of Iyadh S. Daoud, assigned to The Brewing Research Foundation, for his “Separation of Wort From Mash.” Here’s the Abstract:

A barrier cross-flow separation method is used to separate wort from mash in beermaking. The separator medium is preferably a cylindrical element with an internal diameter of at least 20 mm and a pore size in a range of from 10 μm to 100 μm. High gravity wort is obtainable from a four-step separation process which can handle mash free of husk and including large amounts of cereal adjunct. The wort may be clarified in a subsequent filtering step.

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Patent No. 2513765A: Mashing And Lautering Apparatus For Brewing

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Today in 1950, US Patent 2513765 A was issued, an invention of Arthur B. Webb, assigned to the Cream City Boiler Company, for his “Mashing and Lautering Apparatus For Brewing.” There’s no Abstract, although in the description it includes this summary:

This invention relates to mashing and lautering equipment for use in brewing, and has as its general purpose to provide a combination mash and lauter tub or tank of simplified and improved construction.

Although this invention is primarily concerned with the construction of the aufhack or agitator which keeps the mash suitably agitated during mashing and lautering, and the plow or scraper by which the spent grain is swept out of the tank at the completion of the lautering off period, it will be advantageous to briefly outline the steps followed in mashing and lautering.

The mashing operation consists in cooking the grain in water to convert its starch content into sugar. This may be done in a separate tank, or as contemplated by the present invention the mashing and lautering may be done in the same tank.

Lautering is the drawing off of the extract or liquor from the bottom of the tank. During this procedure the mass is gently agitated, and towards the end of the lautering off, sparging water is sprayed over the contents to flush out all possible extract from the grain. At the completion of the lautering’ and sparging when all of the extract has been drawn off, the spent grain is discharged from the tank through a trapdoor in its bottom. I

In the lautering 01f of the extract the bottom layer of the mass serves as a filter bed. Hence, it is extremely important that this bottom layer be left undisturbed. If it is broken or disturbed, the extract being lautered off becomes turbid. Such breaking of the bottom filter layer thus entails long periods of quiescence to allow the turbidity producing particles to settle out and enable the bed to reform.

Satisfactory lautering, therefore, poses two difficult problems. To assure flushing all the extract from the mash, it is essential that the sparging water reach all portions thereof, and this requires having the aufhack or agitator blades reach down into the mass as far as possible. On the other hand the bottom layer which serves as a filter bed must not be disturbed. It thus follows that the extent to which the agitator blades can be lowered bears a relationship to the spacing between adjacent blades, for blades that are spaced far apart can be brought down closer to the bottom without breaking the bottom layer than blades that are spaced closer together past the desired wide spacing between adjacent blades has been achieved by increasing the number of radial arms-which carry the blades and, of course, staggering their radial distances from the axis of rotation so that the circular paths defined by the blades in operation are quite close together although the distance between adjacent blades is much greater. This obvious solution to the problem of effecting increased spacing between adjacent blades entailed the objection of having the inside of the tank cluttered up with mechanism.

As a result cleaning the tank became a tedious task. In such cleaning, the segmental screen sections which form the false bottom of the tank have to be lifted and are generally set up against the side wall of the tank. Inasmuch as these sections are quite large the presence of three (3) or more agitator arms inside the tank became a source of much inconvenience and irritation. Practically every time a screen section was lifted the agitator had to be moved.

With this objection in mind, the present invention has as one of its objects to provide an improved aufhack or agitator wherein only a single pair of arms carries all of the agitator blades, but in a manner spacing the operating portions of the blades and particularly the lower ends thereof far enough apart to preclude breaking the bottom filter layer, even though the blades are lowered to within a short distance from the false bottom.

As can be readily appreciated, the agitator blades in cutting through the relatively compacted mass, leave circular channels in their wake which if not closed allow the sparging water to by-pass portions of the mass with the result that all the portions of the grain are not flushed as effectively as desirable. Hence, it is another object of this invention to provide means for closing up the circular channels cut into the mass by the blades as they sweep around the tank.

More particularly it is an object of this invention to provide a novel trowel member adapted to ride upon the surface of the mass in a position trailing the agitator blades so as to close the circular channels formed by the blades.

Another object of this invention is to utilize the same structure for effecting the desired troweling action to also plow or scrape the spent grain into the discharge opening at the completion of the lautering off step and also serve as a mixing agitator during the mashing operation.

Another object of this invention is to so mount and arrange the combination plow and trowel structure that upon rotation of the agitator so that the top of the pedestal is submerged in the tank contents, the matter of providing adequate lubrication for the working parts without danger of having the lubricant seep out into the tank contents has always presented a problem.

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Patent No. 654788A: Ale Or Beer Filter

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Today in 1900, US Patent 654788 A was issued, an invention of Alfred E. Feroe, for his “Ale or Beer Filter.” There’s no Abstract, although in the description it includes this summary:

My invention relates to an improved ale and beer filter for brewery use.

The object of my improvement is to provide a device of a very large capacity, simple in construction, strong, durable, and efficient in operation, and of as few parts as is consistent with perfect work.-

To attain these ends the invention comprises a series of filter-sections which when put together form a series of compartments. Each compartment has inlet and outlet passages and means for filtration and is a complete filter in itself.

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Patent No. 2006450A: Capping Machine

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Today in 1935, US Patent 2006450 A was issued, an invention of John J. Gaynor, for his “Capping Machine.” There’s no Abstract, although in the description it includes this summary:

This invention relates to capping machines, or more particularly to bottle crowners of the double head type.

One of the objects of the invention is to provide such a machine of the simplest construction with a minimum number of actuating parts so as to promote compactness, and at the same time insuring reliability and effectiveness in operation; and whereby the caps as applied to containers by both capping heads will be uniform.

Another object of the invention is to provide such a capping machine that can be closely arranged in cooperative relation with the container conveying means of a rotary type container filling machine, so that the containers will be capped shortly after being transferred to the capping heads of the capping machine alternately. The type of filling machine referred to includes a circular rotating container conveyor having peripherally arranged vertically reciprocal container supports in which the containers are placed to be raised into filling heads which depend from the circular liquid supply tanks placed above the conveyor and connected to rotate therewith. As a rule the tank is of greater diameter than the conveyor, which relation of parts presents the problem in arranging the capping mechanism in close cooperative relation with the conveyor.

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Patent No. 1271269A: Manufacture Of Non-Alcoholic Malt Beer

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Today in 1918, US Patent 1271269 A was issued, an invention of Louis Block, for his “Manufacture of Non-Alcoholic Malt Beer.” There’s no Abstract, although in the description it includes this summary:

acter to that known in the art as lager beer with the difference that What I now refer to as malt beer shall contain no alcohol or only a very small percentage thereof, while its nutritious and refreshing qualities are practically the same as that of lager beer. I shall now describe the process of manufacture so that others versed in the art may understand and follow it. The first steps in my process are in a general way the same as employed in the manufacture of lager beer or ale. I mash the malt, malt adjuncts or cereal products, boil the Wort, cool it and ferment it.

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Patent No. 3453114A: Process Of Brewing

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Today in 1969, US Patent 3453114 A was issued, an invention of Peter D. Bayne and John L. Pahlow, assigned to Schlitz Brewing Co., for their “Process of Brewing.” There’s no Abstract, although in the description it includes this summary:

This invention relates to a process of brewing and more particularly to a process and apparatus for reconstituting concentrated brewers wort.

The present invention is directed to a continuous, high capacity process for reconstituting concentrated wort. The wort is reconstituted without color gain, loss of hop bitter or alternation of flavor. According to the invention, concentrated wort at a temperature of from 60 to 120 F., but preferably under and having a solids content of 80% is continuously pumped from a storage tank and/ or shipping containers and passed 4into a mixing system. Deionized water, -or filtered mains water, depending upon the purity of the water, is introduced into a mixer at a constant flow rate and is mixed with the stream of concentrated wort to partially reconstitute or dilute the wort. In some cases, particularly in high capacity installations, a second mixer in series may be employed and -a second stream of either deionized water or filtered mains water is introduced into the second mixer down stream from the first mixer. This second or breakdown stream of water is continuously introduced at a variable flow rate and mixed with the partially reconstituted wort to complete the reconstitution to the fermentation gravity.

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Patent No. 732350A: Brew-House-Apparatus Equipment

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Today in 1903, US Patent 732350 A was issued, an invention of Max Henius, for his “Brew-House-Apparatus Equipment.” There’s no Abstract, although in the description it includes this summary:

My invention relates to an improvement in the equipment of apparatus employed in the department of a brewery known as the brewhouse, which is devoted to the operation of producing the wort by practicing the several generally-stated steps of making the mash, drawing off and hopping and boiling the resultant wort, separating the hopped wort from the hops, and finally cooling the hopped wort preparatory to pumping it into the fermentation-vat.

Hitherto the equipment employed in the manufacture of the wort in the brew-house has involved a multiplicity of apparatus, which has rendered not only the installation of the plant in the matter of building and apparatus but also the maintenance and operation very expensive.

The object of my improvement is to simplify the apparatus equipment for a brewhouse by reducing to the minimum the number of apparatuses for practicing the several necessary steps in wort manufacture by adapting a number of the comparatively few apparatuses provided to perform each several of the steps of the process Where hitherto a separate apparatus was in most or at least some instances required for the practice of each separate step.

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Patent No. 3589270A: Device For Preparing Brewing Malt

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Today in 1971, US Patent 3589270 A was issued, an invention of Gisbert Schlimme and Manfred Tschirner, for their “Device For Preparing Brewing Malt.” There’s no Abstract, although in the description it includes this summary:

A single apparatus for preparing brewing malt in three steps, namely steeping, germinating and drying. A horizontal rotary annular perforated rack arranged in a cylindrical trough is charged with the material to be treated and while placed on the rotating rack is firstly steeped in water introduced into the trough below the rack. After the water has been discharged, the germinating step is performed by introducing air conveyed by a fan into the space between the rack and the bottom of the trough and upwardly through the material, which latter is turned by a horizontal series of vertically arranged turning worms which as a unit may be horizontally moved into the material on the rotating rack, the’ unit of worms being vertically movable into the layer of material and again outwardly therefrom.

During the final drying step, the same fan is used to circulate heated air through the material on the rotating rack, and the dried material then discharged from the rack by a conveyor which may be lowered into the material on the rack. The material is then discharged into a worm conveyor leading to a discharge pipe. As conveyor may serve an endless conveyor with buckets which scoop the material from the rack.

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Patent No. 229374A: Apparatus for Purifying Air

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Today in 1880, US Patent 229374 A was issued, an invention of Friedrich A. Bruns, for his “Apparatus for Purifying Air.” There’s no Abstract, although in the description it includes this summary:

The object of this invention is to furnish means for cooling and purifying the atmospheric air which is required for handling beer, ale, wine, and other fermented liquors during fermentation. These liquids are at present transferred by means of air compressing pumps from one cask to another, the air employed for forcing the liquids carrying microscopic organisms and inorganic impurities which impregnate the beer or other liquid and exert an injurious influence thereon. To prevent these organisms from entering the liquids I employ a cooling and purifying apparatus, through which the air is drawn by the air-pump, so that all inorganic and organic impurities are retained and destroyed, and thereby a perfectly pure air supplied for handling the liquids. Fermented liquors treated with air purified in such a manner keep better, become perfectly clear, and are not liable to deterioration.

My invention consists more especially of a cooling-chamber filled with ice and provided with a top screen covered with a layer of cotton or similar material, and of an acid-chamber, into which the air is drawn from the cooling chamber and minutely divided therein by a perforated distributer and screen, to be then conducted off for use. Referring to the drawings, A represents a cooling-chamber, which is filled with ice and provided at the bottom with a discharge pipe for the ice water and with a suitable water-seal.

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Patent No. 3672390A: Draw-Off Tube

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Today in 1972, US Patent 3672390 A was issued, an invention of Elbert Gravesteijn, assigned to Amstel Brouwerij, for his “Draw-Off Tube.” There’s no Abstract, although in the description it includes this summary:

The invention relates to a draw-off tube having on its free end a frontally closed tubular extension, to which there is detachably connected a head with an external, radial flange provided with flattened portions on its circumference, and a cylindrical externally screw threaded casing extending axially from said flange and surrounding said tubular extension coaxially, which external screw thread, after insertion of the draw of? tube in a cask of beer or the like, admits of being screwed into the internal screw thread of the bung hole of the cask, a ring valve loaded by a spring, more particularly .by a helical compression spring, being provided in the space between the inner circumference of the cylindrical casing and the outer circumference of the tubular extension, which ring valve is axially displaceable from the seats formed on said circumferences and which ring valve has its outer circumference adapted to free or close the compressed gas passage and has its inner circumference adapted to simultaneously free or close the beer passage formed by a row of radial openings provided in the wall of the tubular extension adjacent its free end, said cylindrical casing being provided with arms downwardly extending therefrom, which arms are detachably connected with a radial flange provided on the extension, which flange supports the compression spring.

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