GB1229497A - - Google Patents
Info
- Publication number
- GB1229497A GB1229497A GB1229497DA GB1229497A GB 1229497 A GB1229497 A GB 1229497A GB 1229497D A GB1229497D A GB 1229497DA GB 1229497 A GB1229497 A GB 1229497A
- Authority
- GB
- United Kingdom
- Prior art keywords
- glass fibre
- manhole
- former
- moulded
- polyester
- 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
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/02—Manhole shafts or other inspection chambers; Snow-filling openings; accessories
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Reinforced Plastic Materials (AREA)
Abstract
1,229,497. Moulding manholes. A. E. D. THORNHILL, and E. THORNHILL. 9 Oct., 1969 [22 Oct., 1968], No. 50178/68. Heading B5A. [Also in Division E1] A unitary glass fibre reinforced polyester manhole bottom 11, having an interior shape comprising a main open conduit 12 into which may merge one or more open inlet conduits 14, and with semi-annular recesses 19 for pipe jointing, and having also an outwardly projecting flange 17 for building into the manhole brickwork, is moulded by applying to a former, configured to the interior manhole shape and flange, a gel coat of polyester resin, including a thixotropic powder or paste, which is hardened to a tacky consistency prior to applying thereto one or more coats of a polyester resin, including benzol peroxide or methylethylketone catalyst and cobalt accelerator, into which is then forced a sheet of flexible glass fibre, e.g. by pressure of either a manually operated roller, or an opposed forming surface, or a press platen urged inflated rubber bag. The manhole bottom is moulded with the walls thereof closing the ends of the channels, which are opened by cutting during installation. The former may be of wood, and the manhole bottom moulded thereon may also be used to produce further formers of glass fibre reinforced resin similarly applied thereto. The glass fibre may comprise a felted sheet impregnated with a polyester emulsion binder, or a woven cloth treated with heat and pressure to effect fibre binding and preferably also preimpregnated with a chemical binder. Curing may be completed, after removal from the former, at ambient temperatures, e.g. 65‹ F., or at elevated temperatures, e.g. up to 160‹ F.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB5017868 | 1968-10-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1229497A true GB1229497A (en) | 1971-04-21 |
Family
ID=10454953
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1229497D Expired GB1229497A (en) | 1968-10-22 | 1968-10-22 |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1229497A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS522054A (en) * | 1975-06-24 | 1977-01-08 | Hideo Eya | Drainage manhole and method of laying the same |
GB2172848A (en) * | 1985-03-29 | 1986-10-01 | Joel Harry Johnson | Method of producing boards or panels faced with glass reinforced polyester |
GB2243107A (en) * | 1990-04-20 | 1991-10-23 | British Aerospace | Moulding a mould and mould liner skin of composite material for moulding an article of composite material |
WO1993019258A1 (en) * | 1992-03-19 | 1993-09-30 | Caswick Limited | Manholes and inspection chambers |
EP1726726A1 (en) * | 2005-05-23 | 2006-11-29 | Dyka B. V. | Inspection pit |
DE102009037042A1 (en) * | 2009-08-13 | 2011-02-17 | Hegler Plastik Gmbh | Shaft, in particular a control and flushing shaft for wastewater with a flow channel and plate for a flow channel |
-
1968
- 1968-10-22 GB GB1229497D patent/GB1229497A/en not_active Expired
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS522054A (en) * | 1975-06-24 | 1977-01-08 | Hideo Eya | Drainage manhole and method of laying the same |
GB2172848A (en) * | 1985-03-29 | 1986-10-01 | Joel Harry Johnson | Method of producing boards or panels faced with glass reinforced polyester |
GB2243107A (en) * | 1990-04-20 | 1991-10-23 | British Aerospace | Moulding a mould and mould liner skin of composite material for moulding an article of composite material |
GB2243107B (en) * | 1990-04-20 | 1994-01-19 | British Aerospace | Composite material manufacture |
WO1993019258A1 (en) * | 1992-03-19 | 1993-09-30 | Caswick Limited | Manholes and inspection chambers |
GB2279373A (en) * | 1992-03-19 | 1995-01-04 | Caswick Ltd | Manholes and inspection chambers |
GB2279373B (en) * | 1992-03-19 | 1995-07-19 | Caswick Ltd | Manholes and inspection chambers |
EP1726726A1 (en) * | 2005-05-23 | 2006-11-29 | Dyka B. V. | Inspection pit |
NL1029091C2 (en) * | 2005-05-23 | 2006-11-30 | Dyka B V | Inspection pit. |
DE102009037042A1 (en) * | 2009-08-13 | 2011-02-17 | Hegler Plastik Gmbh | Shaft, in particular a control and flushing shaft for wastewater with a flow channel and plate for a flow channel |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |