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GB181941A - Improvements in or relating to apparatus for eliminating stalks from tea - Google Patents

Improvements in or relating to apparatus for eliminating stalks from tea

Info

Publication number
GB181941A
GB181941A GB1459121A GB1459121A GB181941A GB 181941 A GB181941 A GB 181941A GB 1459121 A GB1459121 A GB 1459121A GB 1459121 A GB1459121 A GB 1459121A GB 181941 A GB181941 A GB 181941A
Authority
GB
United Kingdom
Prior art keywords
sieve
tea
furrows
stalks
holes
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
GB1459121A
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 GB1459121A priority Critical patent/GB181941A/en
Publication of GB181941A publication Critical patent/GB181941A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
    • B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
    • B07B1/469—Perforated sheet-like material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/04—Stationary flat screens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B13/00—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices
    • B07B13/003—Separation of articles by differences in their geometrical form or by difference in their physical properties, e.g. elasticity, compressibility, hardness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G27/00—Jigging conveyors
    • B65G27/04—Load carriers other than helical or spiral channels or conduits

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tea And Coffee (AREA)
  • Combined Means For Separation Of Solids (AREA)

Abstract

181,941. Myddelton, R. F. May 25, 1921. Reciprocating sieves.-A sieve for eliminating stalk and the like from tea is provided with raised portions which are perforated. In one form A constructed as shown in Figs. 8, 9<a>, and 9<b>, the sieve is formed with shallow longitudinal grooves r and with raised portions c which are perforated at d. The edges of the perforations d may be turned down, and the grooves r may be omitted. A second form of sieve C, Figs. 6 and 7, is provided with longitudinal furrows formed by plates a, j, and m, as shown in Fig. 7, the plate m being also furrowed transversely, Fig. 6 and provided with holes n at the tops of raised parts between the furrows, and with transverse ridges o at the bottoms of the furrows. The plate j forms a base for the plate m and is provided with large holes k. A third sieve B for use in combination with the sieves A and C is shown in Figs. 4, 5, and 12 and comprises a series of longitudinal furrows f in which are disposed transverse ridges g and holes h facing the ridges as indicated particularly in Fig. 5. The furrows f may be contracted near the holes h as shown in Fig. 12. The tea is first treated on the sieve A, which is inclined and reciprocated, and retains the stalk, midrib, and the largest tea and allows these to fall on to the sieve B, the bulk of the tea passing through and being removed by means of a channel or conveyer. The sieve B which is also inclined and reciprocated, allows the stalks which are not forked and the midribs to pass through and delivers the large tea together with any forked stalks to the sieve C, this operation being facilitated by the construction shown in Fig. 12. The sieve C is reciprocated by hand in the direction of the longitudinal furrows and removes the forked and irregularly shaped stalks from the tea.
GB1459121A 1921-05-25 1921-05-25 Improvements in or relating to apparatus for eliminating stalks from tea Expired GB181941A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1459121A GB181941A (en) 1921-05-25 1921-05-25 Improvements in or relating to apparatus for eliminating stalks from tea

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1459121A GB181941A (en) 1921-05-25 1921-05-25 Improvements in or relating to apparatus for eliminating stalks from tea

Publications (1)

Publication Number Publication Date
GB181941A true GB181941A (en) 1922-06-29

Family

ID=10043983

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1459121A Expired GB181941A (en) 1921-05-25 1921-05-25 Improvements in or relating to apparatus for eliminating stalks from tea

Country Status (1)

Country Link
GB (1) GB181941A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006130062A1 (en) * 2005-05-31 2006-12-07 Sandvik Intellectual Property Ab Screening arrangement

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006130062A1 (en) * 2005-05-31 2006-12-07 Sandvik Intellectual Property Ab Screening arrangement
US8066126B2 (en) 2005-05-31 2011-11-29 Sandvik Intellectual Property Ab Screening arrangement

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