GB932628A - Improvements in or relating to expansible and contractible cores for moulding mouldable materials, such as concrete - Google Patents

Improvements in or relating to expansible and contractible cores for moulding mouldable materials, such as concrete

Info

Publication number
GB932628A
GB932628A GB1945661A GB1945661A GB932628A GB 932628 A GB932628 A GB 932628A GB 1945661 A GB1945661 A GB 1945661A GB 1945661 A GB1945661 A GB 1945661A GB 932628 A GB932628 A GB 932628A
Authority
GB
United Kingdom
Prior art keywords
tubes
expansible
concrete
members
core
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
GB1945661A
Inventor
William John Wesley Courtney
Edward John Ketteringham
Harry Palmer
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.)
MARLEY CONCRETE Ltd
Original Assignee
MARLEY 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 MARLEY CONCRETE Ltd filed Critical MARLEY CONCRETE Ltd
Priority to GB1945661A priority Critical patent/GB932628A/en
Priority to DE1962M0041558 priority patent/DE1916260U/en
Publication of GB932628A publication Critical patent/GB932628A/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
    • B28B7/32—Cores; Mandrels adjustable, collapsible, or expanding inflatable

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)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Moulds, Cores, Or Mandrels (AREA)

Abstract

932,628. Expansible moulding cores. MARLEY CONCRETE Ltd. May 22, 1962 [May 30, 1961], No. 19456/61. Class 87(2). An expansible and contractible core consists of two rigid members 10, 11 between which are inflatable tubes connected to a supply of fluid under pressure by pipe 16 and union 17. The members 10, 11 are connected together by springs used to urge the members together when the tubes are deflated. Preferably the tubes are enclosed within flexible sheaths 14 and are connected by web 15 which retains the tubes between the arcuate parts of plates 10, 11. Abutments 29, or, in a modification, Fig. 4 (not shown), metal plates attached to the web 15, are used to urge the inflated tubes and sheaths outwardly from each other to resist the pressure of the moulded material. Hollow sockets 21, fixed to the lower member 11, enclose heads 23 of plungers 24, which are fixed to the upper member 10 to restrict the separation of members 10, 11 to a predetermined limit. The core may be removed from the concrete by means of a chain bridle 27 connected by bolts 28 to the core.
GB1945661A 1961-05-30 1961-05-30 Improvements in or relating to expansible and contractible cores for moulding mouldable materials, such as concrete Expired GB932628A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1945661A GB932628A (en) 1961-05-30 1961-05-30 Improvements in or relating to expansible and contractible cores for moulding mouldable materials, such as concrete
DE1962M0041558 DE1916260U (en) 1961-05-30 1962-05-29 CASTING CORE.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1945661A GB932628A (en) 1961-05-30 1961-05-30 Improvements in or relating to expansible and contractible cores for moulding mouldable materials, such as concrete

Publications (1)

Publication Number Publication Date
GB932628A true GB932628A (en) 1963-07-31

Family

ID=10129666

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1945661A Expired GB932628A (en) 1961-05-30 1961-05-30 Improvements in or relating to expansible and contractible cores for moulding mouldable materials, such as concrete

Country Status (2)

Country Link
DE (1) DE1916260U (en)
GB (1) GB932628A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3990830A (en) * 1975-04-07 1976-11-09 Ameron, Inc. Multi-stage trowel for smoothing pipe lining material
WO2023019869A1 (en) * 2021-08-17 2023-02-23 王哲 Combined structure, volume compensation device having housing, and manufacturing method

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1516679A (en) * 1975-06-26 1978-07-05 Nayagam K Pneumatically controlled core former
DE4217100C2 (en) * 1991-12-17 2001-05-17 Veit Dennert Kg Baustoffbetr Process and casting mold for the manufacture of large-length prefabricated chimneys and the prefabricated chimney produced with them

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3990830A (en) * 1975-04-07 1976-11-09 Ameron, Inc. Multi-stage trowel for smoothing pipe lining material
WO2023019869A1 (en) * 2021-08-17 2023-02-23 王哲 Combined structure, volume compensation device having housing, and manufacturing method

Also Published As

Publication number Publication date
DE1916260U (en) 1965-05-20

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