GB709252A - Improvements in manufacture of pipe - Google Patents
Improvements in manufacture of pipeInfo
- Publication number
- GB709252A GB709252A GB15402/52A GB1540252A GB709252A GB 709252 A GB709252 A GB 709252A GB 15402/52 A GB15402/52 A GB 15402/52A GB 1540252 A GB1540252 A GB 1540252A GB 709252 A GB709252 A GB 709252A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fibres
- disposed
- helically
- pipe
- wound
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/16—Rigid pipes wound from sheets or strips, with or without reinforcement
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulding By Coating Moulds (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
709,252. Pipes of fibrous material. GANAHL, C. DE. June 18, 1952 [Aug. 4, 1951], No. 15402/52. Class 99 (2). In a pipe consisting essentially of glass reinforcing fibres bonded together by and substantially embedded in a substantially impervious body of plastic material, a portion of the fibres is disposed helically in at least two layers 4, 8, the pitches of the helices being equal in magnitude and opposite in direction and a portion of the fibres is disposed in wholly random orientations in a substantially felted mat 1, e.g. two helically wound tapes 2, 3 preferably having overlapping adjacent edges. The angle a which the helically-wound fibres make with the axis of the pipe may be such that 3 sin<SP>2</SP>a+2/m sina=1 where m is the ratio of the total cross-sectional area of the, helically disposed fibres to the total crosssectional area of longitudinally-disposed fibres 9 which may be incorporated in the wall of the pipe. There may be disposed over the fibres 9 a further helically wound layer of fibres 10 which are fewer in number and more widely spaced than the fibres in the layers 4, 8. There may be additional felted mat layers 5, 11 as shown. The plastic material may be thermosetting or thermoplastic in character, and comprise a composition of styrene and an alkyd resin. or vinyl halide resins and copolymers with vinyl esters, nylon, methacrylate resins, polyethylene, phenol-, urea-, and melamine-formaldehyde condensation polymers, cellulose esters and various blends of these materials; also, a natural wax, resin or gum may be employed. The pipe may be made on a machine, such as that described in Specification 687,552, wherein packages of glass fibre rovings are carried on a number of horizontal tables revolving about upwardly advancing mandrels onto which the plasticcoated fibres are wound. Specification 709,251 also is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US709252XA | 1951-08-04 | 1951-08-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB709252A true GB709252A (en) | 1954-05-19 |
Family
ID=22098185
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB15402/52A Expired GB709252A (en) | 1951-08-04 | 1952-06-18 | Improvements in manufacture of pipe |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB709252A (en) |
-
1952
- 1952-06-18 GB GB15402/52A patent/GB709252A/en not_active Expired
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