GB767931A - Improvements in or relating to forcing screws for extruding machines - Google Patents
Improvements in or relating to forcing screws for extruding machinesInfo
- Publication number
- GB767931A GB767931A GB9920/51A GB992051A GB767931A GB 767931 A GB767931 A GB 767931A GB 9920/51 A GB9920/51 A GB 9920/51A GB 992051 A GB992051 A GB 992051A GB 767931 A GB767931 A GB 767931A
- Authority
- GB
- United Kingdom
- Prior art keywords
- screw
- depth
- extruding
- thread
- relating
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Turning (AREA)
- Screw Conveyors (AREA)
Abstract
767,931. Extruding; making screw conveyers. BITUMEX, Ltd. April 24, 1952 [April 27, 1951], No. 9920/51. Classes 83 (2) and 83 (4). [Also in Groups V and XXX] An extruding-screw has a thread or threads A of constant pitch, the depth D of each thread groove diminishing progressively along its length and the width W of its crest surfaces progressively increasing as the depth decreases. The crest surfaces lie on an imaginary cylindrical surface. Such a screw may be made by taking a conical screw blank, Fig. 2 (B indicating the cone angle), cutting on it a thread of constant pitch and constant depth, and machining it to cylindrical form. Specification 685,043, [Group V], is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9920/51A GB767931A (en) | 1951-04-27 | 1951-04-27 | Improvements in or relating to forcing screws for extruding machines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9920/51A GB767931A (en) | 1951-04-27 | 1951-04-27 | Improvements in or relating to forcing screws for extruding machines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB767931A true GB767931A (en) | 1957-02-13 |
Family
ID=9881220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9920/51A Expired GB767931A (en) | 1951-04-27 | 1951-04-27 | Improvements in or relating to forcing screws for extruding machines |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB767931A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2399311A1 (en) * | 1977-08-05 | 1979-03-02 | Bucher Guyer Ag Masch | LAMINATION MACHINE FOR TREATMENT OF RAW MATERIALS IN THE FORM OF TAPE |
| NL1033423C2 (en) * | 2007-02-19 | 2008-08-20 | Esha Group B V | Device and method for recycling bituminous roofing waste. |
-
1951
- 1951-04-27 GB GB9920/51A patent/GB767931A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2399311A1 (en) * | 1977-08-05 | 1979-03-02 | Bucher Guyer Ag Masch | LAMINATION MACHINE FOR TREATMENT OF RAW MATERIALS IN THE FORM OF TAPE |
| NL1033423C2 (en) * | 2007-02-19 | 2008-08-20 | Esha Group B V | Device and method for recycling bituminous roofing waste. |
| WO2008103035A1 (en) * | 2007-02-19 | 2008-08-28 | Esha Group B.V. | Apparatus and method for recycling bituminous roofing waste |
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