GB1446398A - Collapsible cores for moulds - Google Patents

Collapsible cores for moulds

Info

Publication number
GB1446398A
GB1446398A GB1387374A GB1387374A GB1446398A GB 1446398 A GB1446398 A GB 1446398A GB 1387374 A GB1387374 A GB 1387374A GB 1387374 A GB1387374 A GB 1387374A GB 1446398 A GB1446398 A GB 1446398A
Authority
GB
United Kingdom
Prior art keywords
core
slide
side members
lock
struts
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
Application number
GB1387374A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dow Mac Concrete Ltd
Original Assignee
Dow Mac Concrete Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Dow Mac Concrete Ltd filed Critical Dow Mac Concrete Ltd
Priority to GB1387374A priority Critical patent/GB1446398A/en
Publication of GB1446398A publication Critical patent/GB1446398A/en
Expired legal-status Critical Current

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
    • B28B7/30—Cores; Mandrels adjustable, collapsible, or expanding
    • B28B7/303—Cores; Mandrels adjustable, collapsible, or expanding specially for making undercut recesses or continuous cavities the inner section of which is superior to the section of either of the mouths

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Moulds, Cores, Or Mandrels (AREA)

Abstract

1446398 Collapsible core DOW-MAC CONCRETE Ltd 4 Feb 1975 [28 March 1974] 13873/74 Heading B5A A U-shaped reinforced concrete beam A is cast around a core 3 comprising side members 6a mounted by pivoted links 15, 16 to a slide 17 moving on a central support 8. An attachment 18 of the slide is connected to lifting tackle 5, and includes a lock 19. The side members 6a, which are constructed from detachable, interchangeable sections, are guided by links 12 running along slots 14 in the core base 10, which is rigid with the central support 8. A plurality of supports 8 are mounted on pairs of cross-bars 4 that support mould side walls 2. In use.-The slide 17 is locked by the lock 19 in its lowermost position, to hold the core side members 6a in abutment with the core base 10 for moulding. The core is centralized by screws 21 abutting the struts 4. After moulding, the lock 19 is undone and the tackle 5 is raised to lift the slide 17, pivot the side members 6a upwardly and inwardly, to collapse the core, and finally to pivot the struts 4 and so swing the mould side walls 2 outwardly (see Specification 1,325,261) away from the moulded beam A (see Fig. 2, not shown).
GB1387374A 1974-03-28 1974-03-28 Collapsible cores for moulds Expired GB1446398A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1387374A GB1446398A (en) 1974-03-28 1974-03-28 Collapsible cores for moulds

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1387374A GB1446398A (en) 1974-03-28 1974-03-28 Collapsible cores for moulds

Publications (1)

Publication Number Publication Date
GB1446398A true GB1446398A (en) 1976-08-18

Family

ID=10030943

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1387374A Expired GB1446398A (en) 1974-03-28 1974-03-28 Collapsible cores for moulds

Country Status (1)

Country Link
GB (1) GB1446398A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120175814A1 (en) * 2011-01-10 2012-07-12 O'neill Raymond Method of and machine for manufacturing concrete u-wall type construction elements and method of operating the same
US9644334B2 (en) 2013-08-19 2017-05-09 Stable Concrete Structures, Inc. Methods of and systems for controlling water flow, breaking water waves and reducing surface erosion along rivers, streams, waterways and coastal regions
CN106939793A (en) * 2017-04-21 2017-07-11 四川省创力隧道机械设备有限公司 It is easy to the tunnel central trench chassis efficiently constructed
CN106965301A (en) * 2017-04-18 2017-07-21 刘嵩 The rapid mould opening-closing mould and preparation method of a kind of new precast concrete beam column component
CN107060044A (en) * 2017-06-14 2017-08-18 叶良平 A kind of one-time-shaped mould and its application method for being used to pour groove
CN108098982A (en) * 2018-01-17 2018-06-01 中国铁道科学研究院 Large-span Precast box beam hydraulic deploying and retracting internal mold
CN114102849A (en) * 2021-11-25 2022-03-01 江西泽皓电气科技有限公司 Machining die and manufacturing method for assembly type electric power box body foundation
CN115070908A (en) * 2022-06-01 2022-09-20 中交第四公路工程局有限公司 Method and device for fixing and disassembling prefabricated box girder integrally

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10053832B2 (en) 2011-01-10 2018-08-21 Stable Concrete Structures, Inc. Molded concrete U-wall construction block employing a metal reinforcement cage having stem reinforcement portions with open apertures formed therein for multiple purposes
US8888481B2 (en) * 2011-01-10 2014-11-18 Stable Concrete Structures, Inc. Machine for manufacturing concrete U-wall type construction blocks by molding each concrete U-wall construction block from concrete poured about a block cage made from reinforcing material while said block cage is loaded within said machine
US9630342B2 (en) 2011-01-10 2017-04-25 Stable Concrete Structures, Inc. Machine for manufacturing concrete uwall type construction blocks by molding each concrete U-wall construction block from concrete poured about a block cage made from reinforcing material while said block cage is loaded with said machine
US20120175814A1 (en) * 2011-01-10 2012-07-12 O'neill Raymond Method of and machine for manufacturing concrete u-wall type construction elements and method of operating the same
US10443206B2 (en) 2011-01-10 2019-10-15 Stable Concrete Structures, Inc. Block reinforcement cage having stem reinforcement portions with open apertures formed therein, for use in reinforcing a molded concrete U-wall construction block
US9644334B2 (en) 2013-08-19 2017-05-09 Stable Concrete Structures, Inc. Methods of and systems for controlling water flow, breaking water waves and reducing surface erosion along rivers, streams, waterways and coastal regions
CN106965301A (en) * 2017-04-18 2017-07-21 刘嵩 The rapid mould opening-closing mould and preparation method of a kind of new precast concrete beam column component
CN106965301B (en) * 2017-04-18 2022-08-30 苏州久力砼业机械有限公司 Rapid mold opening and closing die for precast concrete beam column component and manufacturing method
CN106939793A (en) * 2017-04-21 2017-07-11 四川省创力隧道机械设备有限公司 It is easy to the tunnel central trench chassis efficiently constructed
CN107060044A (en) * 2017-06-14 2017-08-18 叶良平 A kind of one-time-shaped mould and its application method for being used to pour groove
CN107060044B (en) * 2017-06-14 2022-12-20 四川省环茂工程机械设备有限公司 One-step forming die for pouring groove and using method thereof
CN108098982A (en) * 2018-01-17 2018-06-01 中国铁道科学研究院 Large-span Precast box beam hydraulic deploying and retracting internal mold
CN108098982B (en) * 2018-01-17 2024-04-12 中国铁道科学研究院 Hydraulic retraction internal mold for large-span precast box girder
CN114102849A (en) * 2021-11-25 2022-03-01 江西泽皓电气科技有限公司 Machining die and manufacturing method for assembly type electric power box body foundation
CN115070908A (en) * 2022-06-01 2022-09-20 中交第四公路工程局有限公司 Method and device for fixing and disassembling prefabricated box girder integrally

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee