Brookston Beer Bulletin

Jay R. Brooks on Beer

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Patent No. 3332748A: Extraction Of Hop Bitters From Beer With Iso-Octane Using Synchronized Pulses In A Helical Coil

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Today in 1967, US Patent 3332748 A was issued, an invention of Jack Albert Spicer and Max William Betts, for their “Extraction of Hop Bitters from Beer With Iso-Octane Using Synchronized Pulses in a Helical Coil.” There’s no Abstract, although in the description it includes this summary:

This invention relates to the extraction of chemical substances from liquid mixtures and in particular to the extraction of such substances from complex mixtures for purposes of analysis.

In the analysis of a complex mixture, it may be desired to separate one or more constituents of the mixture, by liquid/liquid extraction methods, in order to obtain a relatively simple solution, for example for spectrographic analysis. Thus, for example, it has been proposed to extract hop bitter substances from brewers wort or beer by liquid/liquid extraction with iso-octane, whereupon the solution of the hop bitter substances may be analyzed by ultra-violet spectrographic analysis. The present invention provides an extraction process suitable for use in the separation of desired compounds from such mixtures.

According to the invention, a process for the extraction of a chemical substance from a liquid mixture comprises feeding the liquid mixture and a solvent for the desired chemical substance in synchronized pulses through a horizontally disposed coiled tube, and separating the residual liquid mixture from the solution of the desired chemical substance in the solvent. Preferably the coiled tube is helically coiled.

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Patent No. 2645893A: Hop Picking Machine

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Today in 1953, US Patent 2645893 A was issued, an invention of Emil Clemens Horst Jr., for his “Hop Picking Machine.” There’s no Abstract, although in the description it includes this summary:

It is therefore an object of my invention to provide a hop picking machine especially designed as a portable unit and especially useful in accommodating variations in the positioning and size of the growing hop vines and also designed with a wide degree of latitude for accommodating variations in the operation of the machine itself.

Another object of the invention is to provide a generally improved hop picking machine.

A further object of the invention is to provide a hop picking machine of the field harvesting type in which substantially all of the hops stripped from the vines are retained in the machine and are not lost upon the ground.

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Patent No. 3195445A: Bale Press

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Today in 1965, US Patent 3195445 A was issued, an invention of Sidney S. Meisler, for his “Bale Press.” There’s no Abstract, although in the description it includes this summary:

This invention relates to baling presses and more particularly to a novel baling press for forming bales and applying a number of tie wires therewith.

It is therefore an object of the present invention to provide apparatus for recompressing hops into cylindrical bales confined against expansion by plural bands supplied by a powered strapping machine, thus materially increasing the speed with which finished bales may be completed and therefore materially decreasing the cost of so doing.

A further object of the present invention lies in the provision of an improved pair of complemental shaping dies by means of which a band may be caused to encircle a bale contained in the fully closed mating dies by passing the band thereabout from one side of the bale press.

Another object of the present invention lies in the provision of an improved bale press having a pair of complemental shaping dies which, when in said mating position, provide complemental ways through which bale banding material may be passed by a power strapping machine.

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Patent No. 244695A: Process Of Purification Of Hops For Brewing Purposes

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Today in 1881, US Patent 244695 A was issued, an invention of James Walkek, for his “Process of Purification of Hops for Brewing Purposes.” There’s no Abstract, although in the description it includes this summary:

The mode or process of purifying hops for brewing purposes — to wit — by steeping the hops in water at or approximating a temperature of 100 Fahrenheit until the supernatant liquor ceases to be turbid, then drawing off the Water, and finally removing the thus purified hops direct to the brew-kettle, substantially as set forth.

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Patent No. 860390A: Hop-Jack

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Today in 1907, US Patent 860390 A was issued, an invention of George Edward Laubenheimer, for his “Hop-Jack.” There’s no Abstract, although in the description it includes this summary:

The Object of this invention is to provide a hop jack in which the screen or strainer is so constructed that the wort quickly drains oh and the hops are quickly and, thoroughly sparged and removed from the greater portion of the surface of the screen by mechanical means, thereby obviating n great deal of the manual lahoi’ usually required where a lalsc bottom is employed.

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Patent No. 4160787A: Process For Extracting Bitter Flavoring Principles From Hops

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Today in 1979, US Patent 4160787 A was issued, an invention of Manfred Moll, Roland Flayeux, Pierre Dicesare, and Bernard Gross, for their “Process For Extracting Bitter Flavoring Principles From Hops.” Here’s the Abstract:

A process is described for converting the α- and β-acids of hops into the iso-α acids for use as a bitter flavoring principle ingredient for beers. The α-acids content of the hops is directly isomerized to the iso-α-acid, the bitter principle ingredient. The β acids in the hops extract is transformed to the α acid either after a direct separation step before the α-acid isomerization or the residual β-acids, after the isomerization, are then transformed and the resultant α-acid is isomerized. The β-acid transformation results from a radiation activation followed by an oxidation step with a per – acid.

The isomerization of the α-acid to the iso-α-acid is accomplished by reaction with an alkaline earth metal ethoxide preferably the magnesium ethoxide.

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Patent No. 2893870A: Hopping Of Beer

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Today in 1959, US Patent 2893870 A was issued, an invention of Kurt Ritter, for his “Hopping of Beer.” There’s no Abstract, although in the description it includes this summary:

The invention relates to improvements in beer brewing and more particularly to an improved method of hopping beer.

The brewing of beer comprises generally the following steps: Ground malt is mashed with water, and the obtained malt solution (first wort) is freed from the malt residues (spent grains). Subsequently, the wort is boiled with addition of the required amount of hops and then separated from the spent hops and fermented with yeast. The hops are generally added as such or in coarsely disintegrated state to the Wort.

Said procedure has the drawback that, on boiling, only about one-third to one-fourth of the bitter principle (resins), contained in the hops, passes into the wort; in addition, a certain amount of the resins, e.g. about 3 to 7 percent, is lost in further processing (fermentation and storage) by precipitation.

So far, attempts to eliminate said drawbacks have not met with satisfactory results. Recently, it has been proposed to extract the resins by subjecting the hops in water or aqueous solutions to ultrasonic irradiation and to introduce the thus obtained resin extract into the boiling wort instead of hopping with natural hops. Said method, however, must be carried out with expensive and delicate devices, the operation of which requires high energy cost, and which are therefore uneconomical for commercial purposes. The preparation of such resin extracts by means of ultrasonic irradiation takes considerable time, for instance 1 to 2 hours and more. During this prolonged treatment, undesired side reactions may take place which may affect the brewing process, for instance with respect to the uniformly fine and pleasant taste of the produced beer.

It is a principal object of the invention to provide a simple, reliable, and economic hopping procedure.

It is another object of the invention to provide a method by which the required amount of hops is considerably reduced and nonetheless a beer of uniform excellent quality and taste is produced.

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Patent No. PP8824P: Hop Plant Named “H87203-1”

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Today in 1994, US Patent PP8824 P was issued, an invention of Gene Probasco, assigned to John I. Haas, Inc., for his “Hop Plant Named ‘H87203-1.'” It’s almost identical to the previous patent for the hop plant named H87207-2. Here’s the Abstract for this one:

A new variety of hop plant (H87203-1) originating as the result of a controlled corss pollination between unpatented Galena female hop plant with unpatented John I. Haas, Inc. (Haas) male hop plant No. 833-53M, and unique particularly for its cones’ unusually high percentage of beta acids when compared to its female parent variety Galena (unpatented) and otherwise as herein described.

It’s been 21 years since this other hop variety was patented. Did it ever get its own name? Does anybody know?
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Patent No. PP8823P: Hop Plant Named “H87207-2”

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Today in 1994, US Patent PP8823 P was issued, an invention of Gene Probasco, assigned to John I. Haas, Inc., for his “Hop Plant Named ‘H87207-2.'” Here’s the Abstract:

A new variety of hop plant (H87207-2) originating as the result of a controlled cross pollination between unpatented Galena female hop plant with unpatented John I. Haas, Inc. (Haas) male hop plant No. 833-53M, and unique particularly for its cones’ unusually high percentage of beta acids when compared to its female parent variety Galena (unpatented) and otherwise as herein described.

It’s been 21 years since this hop variety was patented. Did it ever get its own name? Does anybody know?
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Patent No. 1232098A: Process Of Leaching Out Hops

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Today in 1917, US Patent 1232098 A was issued, an invention of Heinrich Schneider, for his “Process Of Leaching Out Hops.” There’s no Abstract, although in the description it includes this summary:

The object of the present invention is a process of leaching hops in a hop extracting apparatus provided with a strainer and stirring device, but passing the wort and after-wort through the hops on their way between the refining vat and the copper.

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