GB570999A - Improvements in or relating to screw-presses - Google Patents

Improvements in or relating to screw-presses

Info

Publication number
GB570999A
GB570999A GB1568543A GB1568543A GB570999A GB 570999 A GB570999 A GB 570999A GB 1568543 A GB1568543 A GB 1568543A GB 1568543 A GB1568543 A GB 1568543A GB 570999 A GB570999 A GB 570999A
Authority
GB
United Kingdom
Prior art keywords
screws
screw
outlet
press
grooves
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
GB1568543A
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.)
British Cellophane Ltd
Original Assignee
British Cellophane Ltd
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
Priority to US466810A priority Critical patent/US2360984A/en
Application filed by British Cellophane Ltd filed Critical British Cellophane Ltd
Publication of GB570999A publication Critical patent/GB570999A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B30PRESSES
    • B30BPRESSES IN GENERAL
    • B30B9/00Presses specially adapted for particular purposes
    • B30B9/02Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material
    • B30B9/12Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using pressing worms or screws co-operating with a permeable casing
    • B30B9/16Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using pressing worms or screws co-operating with a permeable casing operating with two or more screws or worms

Abstract

<PICT:0570999/IV/1> <PICT:0570999/IV/2> A press for removing carbon bisulphide from sodium cellulose xanthate and compacting the latter to remove air therefrom comprises a pair of intermeshing screws 14, 16, the threads of each of which fill the complementary grooves of the other screw at the position where they intermesh, and the said screws are so formed that the volumetric capacity of the grooves gradually decreases from the inlet 26 to the outlet of the press. A solid forming die 28 is positioned closely about the non-intermeshing portions of the screws at the outlet end, and a perforated cover or sleeve 36 is disposed around the screws. In the construction shown, the decrease in volumetric capacity is obtained by decreasing the depth of the grooves, but in a modification, Fig. 5 (not shown), the depth is maintained constant and the width of the rooves decreases. The die 28 is held in place by bolts 30 and spacing members 32. Screw-operated wedge bars 40 urge the sleeve 36 into contact with the screws. Each screw shaft 18 has a packing gland comprising a flange 50, which is secured to the press frame 22 and has a cavity in which rotates a dip ring or thrower 58. The cavity may be connected to vacuum through opening 60. The casing 12 is air-tight and a vacuum is applied to the carbon bisulphide outlet 34.
GB1568543A 1942-11-24 1943-09-24 Improvements in or relating to screw-presses Expired GB570999A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US466810A US2360984A (en) 1942-11-24 1942-11-24 Screw press

Publications (1)

Publication Number Publication Date
GB570999A true GB570999A (en) 1945-08-01

Family

ID=23853179

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1568543A Expired GB570999A (en) 1942-11-24 1943-09-24 Improvements in or relating to screw-presses

Country Status (2)

Country Link
US (1) US2360984A (en)
GB (1) GB570999A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2633074A (en) * 1948-05-01 1953-03-31 Monsanto Chemicals Apparatus for densifying dry powdered solids
US4438691A (en) * 1980-06-13 1984-03-27 Stord Bartz A/S Screw press arrangements
FR2644729A1 (en) * 1989-03-24 1990-09-28 Nat Food Res Double-screw press

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU28825A1 (en) * 1939-02-06 1900-01-01
US2567219A (en) * 1945-02-12 1951-09-11 Masonite Corp Plural intermeshing feed or press screws
US2466934A (en) * 1946-01-05 1949-04-12 Charles E Dellenbarger Extruding machine for plastic material
US2488595A (en) * 1946-08-30 1949-11-22 Western Electric Co Apparatus for plasticizing and straining plastic material
NL67723C (en) * 1947-06-25 1900-01-01
FR985086A (en) * 1949-02-19 1951-07-13 Kraffe De Laubarede Screwing device for advancing, mixing, homogenization and pressurizing the thermoplastic plastics and the like products
US2709956A (en) * 1949-10-18 1955-06-07 Maurice A Napier Screw conveyor press
US2646199A (en) * 1950-03-17 1953-07-21 United Shoe Machinery Corp Mechanism for filling dispensing guns
GB897023A (en) * 1957-10-28 1962-05-23 Asplund Arne J A Improvements in continuous disc type presses
FR1399683A (en) * 1964-04-08 1965-05-21 Rhone Poulenc Sa Improvement to filter devices in the plastics extrusion
JP2594526B2 (en) * 1992-12-22 1997-03-26 カゴメ株式会社 Biaxially-different rotating extruder for juice

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2633074A (en) * 1948-05-01 1953-03-31 Monsanto Chemicals Apparatus for densifying dry powdered solids
US4438691A (en) * 1980-06-13 1984-03-27 Stord Bartz A/S Screw press arrangements
FR2644729A1 (en) * 1989-03-24 1990-09-28 Nat Food Res Double-screw press

Also Published As

Publication number Publication date
US2360984A (en) 1944-10-24

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