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Johann Franz Hugo Gronwald
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Publication of GB189726532ApublicationCriticalpatent/GB189726532A/en
26,532. Gronwald, J. F. H. Nov. 13. Drawings to Specification. Beer, preserving.-Beer, before sterilization, has deleterious volatile matters removed from it by subjecting it to a vacuum, or by passing an innocuous gas such as carbonic-acid gas through it, or by subjecting it successively to a vacuum and the passage of a gas. The apparatus employed may consist of a vessel provided with stirrers, and with a casing which serves for the passage of heating or cooling substances, and the vessel is also connected with a vacuum pump, and with a supply of carbonic-acid gas.
GB189726532D1897-11-131897-11-13Improvements in and relating to Preserving Beer.
ExpiredGB189726532A
(en)
Purification of liquids by subjecting successively confined portions of said liquid to supersonic vibrations and simultaneously bubbling oxygen through said confined portions