GB371943A - Improvements in tea withering - Google Patents

Improvements in tea withering

Info

Publication number
GB371943A
GB371943A GB316231A GB316231A GB371943A GB 371943 A GB371943 A GB 371943A GB 316231 A GB316231 A GB 316231A GB 316231 A GB316231 A GB 316231A GB 371943 A GB371943 A GB 371943A
Authority
GB
United Kingdom
Prior art keywords
leaf
withering
air
tea
heating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB316231A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB316231A priority Critical patent/GB371943A/en
Publication of GB371943A publication Critical patent/GB371943A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
    • F26B9/06—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers
    • F26B9/066—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers the products to be dried being disposed on one or more containers, which may have at least partly gas-previous walls, e.g. trays or shelves in a stack
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23F—COFFEE; TEA; THEIR SUBSTITUTES; MANUFACTURE, PREPARATION, OR INFUSION THEREOF
    • A23F3/00—Tea; Tea substitutes; Preparations thereof
    • A23F3/06—Treating tea before extraction; Preparations produced thereby
    • A23F3/08—Oxidation; Fermentation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/06—Controlling, e.g. regulating, parameters of gas supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B2200/00—Drying processes and machines for solid materials characterised by the specific requirements of the drying good
    • F26B2200/20—Teas, i.e. drying, conditioning, withering of tea leaves

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Biotechnology (AREA)
  • Chemical & Material Sciences (AREA)
  • Food Science & Technology (AREA)
  • Polymers & Plastics (AREA)
  • Tea And Coffee (AREA)

Abstract

371,943. Tea withering. MAIN, J. A., Clydesdale Ironworks, Possilpark, Glasgow. Jan. 31, 1931, No. 3162. [Class 34 (ii).] In a controlled tea-withering process, air is passed through the enclosure containing the leaf racks and periodically over heat-exchanging means in order to maintain it within the limits of temperature and humidity demanded by the condition of the leaf. Withering is carried out at a temperature of about 60-80‹ F. As shown in Figs. 1 and 2, apparatus for carrying out the process comprises a chamber with trays or shelves 2 facing the airtight doors 3. The shelves 2 may be pivoted to a partition disposed longitudinally in the centre of the chamber and may be withdrawn or tilted when the doors are opened or removed. Air enters through a duct 5 and strikes the first set of transverse heating or - cooling coils 6 and after passing over a tray containing tea passes in contact with another set of coils. The'air thus passes alternately in contact with the heat-exchanging devices and with a section of the leaf racks. If a reversible air current is to be employed, a set of heating or cooling coils is placed adjacent to the outlet duct 7. As shown in Fig. 4, the leaf racks 8 are enclosed in a number of chambers connected in series by ducts 10 in which the heating or cooling coils 11 are placed.
GB316231A 1931-01-31 1931-01-31 Improvements in tea withering Expired GB371943A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB316231A GB371943A (en) 1931-01-31 1931-01-31 Improvements in tea withering

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB316231A GB371943A (en) 1931-01-31 1931-01-31 Improvements in tea withering

Publications (1)

Publication Number Publication Date
GB371943A true GB371943A (en) 1932-05-02

Family

ID=9753101

Family Applications (1)

Application Number Title Priority Date Filing Date
GB316231A Expired GB371943A (en) 1931-01-31 1931-01-31 Improvements in tea withering

Country Status (1)

Country Link
GB (1) GB371943A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2330475A1 (en) * 1975-11-05 1977-06-03 Carpenter Technology Corp IMPROVEMENTS IN THE MANUFACTURING METHODS OF HIGH PRECISION TUBULAR ELEMENTS AND TUBULAR ELEMENTS THUS MANUFACTURED

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2330475A1 (en) * 1975-11-05 1977-06-03 Carpenter Technology Corp IMPROVEMENTS IN THE MANUFACTURING METHODS OF HIGH PRECISION TUBULAR ELEMENTS AND TUBULAR ELEMENTS THUS MANUFACTURED

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