GB637185A - Improvements in the production of pre-stressed reinforced concrete sleepers and similar beams - Google Patents
Improvements in the production of pre-stressed reinforced concrete sleepers and similar beamsInfo
- Publication number
- GB637185A GB637185A GB1104347A GB1104347A GB637185A GB 637185 A GB637185 A GB 637185A GB 1104347 A GB1104347 A GB 1104347A GB 1104347 A GB1104347 A GB 1104347A GB 637185 A GB637185 A GB 637185A
- Authority
- GB
- United Kingdom
- Prior art keywords
- wires
- moulds
- lines
- mould
- end plates
- 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
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
- B28B23/04—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members the elements being stressed
- B28B23/06—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members the elements being stressed for the production of elongated articles
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
Abstract
Moulds for concrete sleepers or similar beams, which may have slotted removable end plates, as described in Specification 572,387, are successively assembled around reinforcing wires stretched above each of one or more production lines, which may be low brick or concrete walls, and slid along the lines either on a track, e.g., a roller track, or on the reinforcing wires until the lines are full. As each mould arrives at its position it is supported if necessary on wedges or adjustable feet. After tensioning the wires the moulds are filled with concrete from a hopper or bucket carried by an overhead travelling crane having a transverse bridge which extends across all the lines. During and/or after filling each mould is vibrated by an electrical or mechanical vibrator manually applied to the mould. After hardening, which may be accelerated by the process described in Specification 602,024, the wires between the moulds are cut and the crane used to remove the sleepers, with or without the moulds. The last mould is then hauled along each line to stretch new lengths of wires above the lines, the wires running off reels on vertical shafts at one end of the production lines. When the moulds are slid along the wires the end plates have to be closed before moving the moulds and the moulds and end plates may have wheels, hooks or the like to engage the wires and facilitate the movement. Specifications 572,385 and 572,390 also are referred to.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1104347A GB637185A (en) | 1947-04-24 | 1947-04-24 | Improvements in the production of pre-stressed reinforced concrete sleepers and similar beams |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1104347A GB637185A (en) | 1947-04-24 | 1947-04-24 | Improvements in the production of pre-stressed reinforced concrete sleepers and similar beams |
Publications (1)
Publication Number | Publication Date |
---|---|
GB637185A true GB637185A (en) | 1950-05-17 |
Family
ID=9978967
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1104347A Expired GB637185A (en) | 1947-04-24 | 1947-04-24 | Improvements in the production of pre-stressed reinforced concrete sleepers and similar beams |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB637185A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2386396A3 (en) * | 2010-05-11 | 2014-02-26 | LEONHARD MOLL BETONWERKE GmbH & Co KG | Method for manufacturing pre-tensioned concrete construction elements, in particular concrete railway sleepers using a forming bed |
-
1947
- 1947-04-24 GB GB1104347A patent/GB637185A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2386396A3 (en) * | 2010-05-11 | 2014-02-26 | LEONHARD MOLL BETONWERKE GmbH & Co KG | Method for manufacturing pre-tensioned concrete construction elements, in particular concrete railway sleepers using a forming bed |
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