GB1238167A - - Google Patents
Info
- Publication number
- GB1238167A GB1238167A GB1238167DA GB1238167A GB 1238167 A GB1238167 A GB 1238167A GB 1238167D A GB1238167D A GB 1238167DA GB 1238167 A GB1238167 A GB 1238167A
- Authority
- GB
- United Kingdom
- Prior art keywords
- core
- head
- mould
- march
- structural members
- 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
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/28—Cores; Mandrels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/08—Producing shaped prefabricated articles from the material by vibrating or jolting
- B28B1/093—Producing shaped prefabricated articles from the material by vibrating or jolting by means directly acting on the material, e.g. by cores wholly or partly immersed in the material or elements acting on the upper surface of the material
- B28B1/0935—Producing shaped prefabricated articles from the material by vibrating or jolting by means directly acting on the material, e.g. by cores wholly or partly immersed in the material or elements acting on the upper surface of the material using only elements wholly or partly immersed in the material, e.g. cores
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
1,238,167. Making structural members. W. DICKINSON. 25 March, 1970 [25 March, 1969], No. 15628/69. Heading B5A. Apparatus for manufacturing structural members comprises an elongated mould, means for feeding a settable material, such as concrete, into the mould, a core 4, 4a positioned in the mould, and means for drawing the core through the settable material to form a void in the member being produced, characterized in that the core has a ploughshare-like head member 8. The head comprises a leading edge 8a which may curve upwards and an upwardly projecting central portion having a sharp upper edge 8b curving convexly upwards and rearwards from the leading edge 8a, and concave side walls (8c and 8d). An upper tongue 8e of width less than the width of the core, is also provided on the head member 8. The head may be integral with the core or detachable or the core may be in two parts 4, 4a separated by a damper or resilient member. The part of the core carrying the head may be vibrated.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1562869 | 1969-03-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1238167A true GB1238167A (en) | 1971-07-07 |
Family
ID=10062580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1238167D Expired GB1238167A (en) | 1969-03-25 | 1969-03-25 |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1238167A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2493382A1 (en) * | 1980-10-31 | 1982-05-07 | Delmagyarorszagi Magas Melyepi | Casting concrete members with ducts - the ducts being formed by rubber rods or tubes removable by pulling |
-
1969
- 1969-03-25 GB GB1238167D patent/GB1238167A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2493382A1 (en) * | 1980-10-31 | 1982-05-07 | Delmagyarorszagi Magas Melyepi | Casting concrete members with ducts - the ducts being formed by rubber rods or tubes removable by pulling |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |