GB866164A - Method and means of forming cavities in cast materials such as concrete - Google Patents

Method and means of forming cavities in cast materials such as concrete

Info

Publication number
GB866164A
GB866164A GB1054057A GB1054057A GB866164A GB 866164 A GB866164 A GB 866164A GB 1054057 A GB1054057 A GB 1054057A GB 1054057 A GB1054057 A GB 1054057A GB 866164 A GB866164 A GB 866164A
Authority
GB
United Kingdom
Prior art keywords
former
bolt
concrete
wall
replaced
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
GB1054057A
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.)
ALEXANDER FELDMANN
Original Assignee
ALEXANDER FELDMANN
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 ALEXANDER FELDMANN filed Critical ALEXANDER FELDMANN
Priority to GB1054057A priority Critical patent/GB866164A/en
Publication of GB866164A publication Critical patent/GB866164A/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

866,164. Moulding cavities in concrete &c. FELDMANN, A. April 1, 1958 [April 1, 1957; June 28, 1957 ; Aug. 20, 1957 ; Dec. 27, 1957], Nos. 10540/57, 20457/57, 26238/57 and 40162/57. Class 87(2). [Also in Group X] A device for forming a cavity in cast material comprises a first part or former 2 which is of elastic material and is shaped to form an undercut cavity in the cast material when secured to a mould wall 3, and a second part 4 having means for attachment to the former 2 and serving both to secure the former to wall 3 and to provide means for extracting the former from the cavity formed thereby. The rubber former 2 surrounds a threaded sleeve 7 and is fastened to wall 3 by a bolt 4 threaded into sleeve 7. The concrete &c. is cast in the mould, and the bolt is unscrewed, the mould wall removed, the bolt replaced and used to pull out the former 2 by deforming it. The former 2 may have holes 8 to increase its flexibility or have a central part of more spongy material. The sleeve may be replaced by a nut with a cap over the bolt threads and the bolt may be replaced by a quick release locking device, Figs. 3A, 3B (not shown).
GB1054057A 1957-04-01 1957-04-01 Method and means of forming cavities in cast materials such as concrete Expired GB866164A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1054057A GB866164A (en) 1957-04-01 1957-04-01 Method and means of forming cavities in cast materials such as concrete

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1054057A GB866164A (en) 1957-04-01 1957-04-01 Method and means of forming cavities in cast materials such as concrete

Publications (1)

Publication Number Publication Date
GB866164A true GB866164A (en) 1961-04-26

Family

ID=9969703

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1054057A Expired GB866164A (en) 1957-04-01 1957-04-01 Method and means of forming cavities in cast materials such as concrete

Country Status (1)

Country Link
GB (1) GB866164A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3157934A (en) * 1961-04-28 1964-11-24 Frederick P Williams Core member
US4157807A (en) * 1973-12-10 1979-06-12 Mccluskey John R Aperture forming devices
EP0049456A2 (en) * 1980-10-04 1982-04-14 Siegfried Fricker Moulded body for producing a cavity in a finished concrete product
EP0049455A2 (en) * 1980-10-04 1982-04-14 Siegfried Fricker Moulded body for holding an anchor and for producing a cavity in a finished concrete product
USRE31598E (en) * 1973-12-10 1984-06-05 Aperture forming device
GB2174034A (en) * 1984-11-22 1986-10-29 Bip Chemicals Ltd Apparatus for manufacturing a building block
US6354620B1 (en) 1999-08-13 2002-03-12 Dow Corning Corporation Silicone coated textile fabrics

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3157934A (en) * 1961-04-28 1964-11-24 Frederick P Williams Core member
US4157807A (en) * 1973-12-10 1979-06-12 Mccluskey John R Aperture forming devices
USRE31598E (en) * 1973-12-10 1984-06-05 Aperture forming device
EP0049456A2 (en) * 1980-10-04 1982-04-14 Siegfried Fricker Moulded body for producing a cavity in a finished concrete product
EP0049455A2 (en) * 1980-10-04 1982-04-14 Siegfried Fricker Moulded body for holding an anchor and for producing a cavity in a finished concrete product
DE3037595A1 (en) * 1980-10-04 1982-04-22 Siegfried 7135 Wiernsheim Fricker MOLDED BODY FOR GENERATING A RECESS IN A PRECAST CONCRETE PART
EP0049456A3 (en) * 1980-10-04 1982-08-25 Siegfried Fricker Moulded body for producing a cavity in a finished concrete product
EP0049455A3 (en) * 1980-10-04 1982-08-25 Siegfried Fricker Moulded body for holding an anchor and for producing a cavity in a finished concrete product
GB2174034A (en) * 1984-11-22 1986-10-29 Bip Chemicals Ltd Apparatus for manufacturing a building block
US6354620B1 (en) 1999-08-13 2002-03-12 Dow Corning Corporation Silicone coated textile fabrics

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