GB1009582A - Improvements in or relating to prestressed concrete - Google Patents
Improvements in or relating to prestressed concreteInfo
- Publication number
- GB1009582A GB1009582A GB33046/63A GB3304663A GB1009582A GB 1009582 A GB1009582 A GB 1009582A GB 33046/63 A GB33046/63 A GB 33046/63A GB 3304663 A GB3304663 A GB 3304663A GB 1009582 A GB1009582 A GB 1009582A
- Authority
- GB
- United Kingdom
- Prior art keywords
- wire
- concrete
- fed
- rollers
- capstans
- 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
- 239000011513 prestressed concrete Substances 0.000 title 1
- 238000000465 moulding Methods 0.000 abstract 1
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
-
- 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
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
1,009,582. Wire strainers. RICHARD LEES Ltd., and R. R. OAKDEN. Aug. 17, 1964 [Aug. 21, 1963], No. 33046/63. Heading F2G. [Also in Division B5] A stress bed comprising a roller conveyer 5 and curing tunnel 8 receives green concrete from a moulding section 6 by means of a belt conveyer 7, and tensioned stressing wires 12 (one shown) surrounded by the concrete and held therein when it has hardened are continuously fed with the concrete from a reel 13 via a tensioning device 14. The wire is fed around grooved frusto-conical capstans 22 of the device 14, through a heated tunnel 15, where any tendency for the wire to creep under tension is accelerated, around a stressing pulley 16, maintained under constant load by an hydraulically or pneumatically operated piston and cylinder device 17, and finally into the concrete beam 9. Rubber-tyred rollers 19, Fig. 2, connected for rotation with the capstans and which functionally engage the beam 9, are continuously rotated thereby and may be additionally driven by a motor 30 to compensate if the wire is either over or underfed. The motor 30 is controlled by an electrical contact actuated by movement of the device 17. In a an alternative form of the tensioning device, the wire is fed by rollers 31 (Fig. 4, not shown) at a rate less than that at which the hardened concrete is fed from the curing tunnel 8 so that the wire is tensioned, and compensating action is produced by these rollers when similarly actuated by movement of device 17.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB33046/63A GB1009582A (en) | 1963-08-21 | 1963-08-21 | Improvements in or relating to prestressed concrete |
US390088A US3283385A (en) | 1963-08-21 | 1964-08-17 | Apparatus for making prestressed concrete |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB33046/63A GB1009582A (en) | 1963-08-21 | 1963-08-21 | Improvements in or relating to prestressed concrete |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1009582A true GB1009582A (en) | 1965-11-10 |
Family
ID=10347808
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB33046/63A Expired GB1009582A (en) | 1963-08-21 | 1963-08-21 | Improvements in or relating to prestressed concrete |
Country Status (2)
Country | Link |
---|---|
US (1) | US3283385A (en) |
GB (1) | GB1009582A (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1330636A (en) * | 1969-09-30 | 1973-09-19 | Flowcrete Ltd | Production of prestressed concrete |
US3903222A (en) * | 1974-04-11 | 1975-09-02 | Jr Patrick F Brown | Method for producing prestressed concrete |
US4102957A (en) * | 1975-11-20 | 1978-07-25 | Canfarge Ltd (Francon Division) | Apparatus and method for manufacturing prestressed concrete railway ties |
FI75302C (en) * | 1984-04-02 | 1988-06-09 | Partek Ab | Apparatus for continuous casting of a two-way biased end loose concrete product. |
NL1007476C2 (en) * | 1997-11-07 | 1999-05-10 | Peter Cornelis Peters | Method for manufacturing a reinforced elongated longitudinal load-bearing concrete product, and a pile. |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1107235A (en) * | 1910-01-06 | 1914-08-11 | George Rae | Process of manufacturing reinforced-concrete pressure-pipes. |
GB673015A (en) * | 1948-10-01 | 1952-05-28 | Schroeder Werner | Improvements in the manufacture of reinforced concrete elements |
CH292714A (en) * | 1951-08-30 | 1953-08-31 | Robin Ros Mirko | Process for the production of prestressed components and device for carrying out the process. |
US2863206A (en) * | 1952-08-27 | 1958-12-09 | Kirchner Ignatz Adolf | Apparatus for prestressing reinforcing wires for reinforced concrete parts in mass production |
US2853250A (en) * | 1953-06-16 | 1958-09-23 | John Maurice Crom | Apparatus for imparting stresses to structural members |
US3055073A (en) * | 1959-11-06 | 1962-09-25 | Ben C Gerwick Inc | Method and apparatus for the continuous production of prestressed concrete members |
-
1963
- 1963-08-21 GB GB33046/63A patent/GB1009582A/en not_active Expired
-
1964
- 1964-08-17 US US390088A patent/US3283385A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US3283385A (en) | 1966-11-08 |
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