GB954390A - A new or improved collapsible core - Google Patents

A new or improved collapsible core

Info

Publication number
GB954390A
GB954390A GB3432361A GB3432361A GB954390A GB 954390 A GB954390 A GB 954390A GB 3432361 A GB3432361 A GB 3432361A GB 3432361 A GB3432361 A GB 3432361A GB 954390 A GB954390 A GB 954390A
Authority
GB
United Kingdom
Prior art keywords
pads
core
shaft
blocks
movement
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
GB3432361A
Inventor
Alan Cuthbert Coker
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.)
Ecrofnier & Partners Ltd
Original Assignee
Ecrofnier & Partners 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 Ecrofnier & Partners Ltd filed Critical Ecrofnier & Partners Ltd
Priority to GB3432361A priority Critical patent/GB954390A/en
Priority to DE19621459257 priority patent/DE1459257A1/en
Publication of GB954390A publication Critical patent/GB954390A/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
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G15/00—Forms or shutterings for making openings, cavities, slits, or channels
    • E04G15/06—Forms or shutterings for making openings, cavities, slits, or channels for cavities or channels in walls of floors, e.g. for making chimneys
    • E04G15/063—Re-usable forms
    • E04G15/065—Re-usable forms with mechanical means to modify the section

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Moulds, Cores, Or Mandrels (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Bathtub Accessories (AREA)

Abstract

954,390. Collapsible cores. ECROFNIER & PARTNERS Ltd. Sept. 25, 1962 [Sept. 25, 1961], No. 34323/61. Heading B5A. A collapsible core for use in moulding concrete &c., comprises a mechanism to expand or collapse the core to which plates of different dimensions or shapes may be releasably attached, so that a variety of core sizes may be obtained. Longitudinally spaced bearing blocks 1 separated by rigid bars 2 are slidably mounted upon a shaft 3. Blocks 4 mounted on shaft 3 for movement therewith, are connected, through links 5, to the pads 8 which releasably carry side walls 9 (which may be of various sizes, as shown in Fig. la) by means of spring clips 11. Lateral movement of the pads 8 is guided by members 10 which are slidable in block 1. The upper and lower walls 13 are releasably carried upon pads 14 by a series of clips 17 each of which slides over the bevelled surfaces 16 of the pads (see Fig. 1a). The pads are connected through links 23 to blocks 24 which are carried by the shaft 3, the lateral movement of the pads being guided by members 15 slidable in the block 1. To accommodate side walls of various sizes, adaptors 18 comprising pads similar to 14 are clipped on to the pads 14 and the upper and lower walls clipped on to the adaptors as before (Figs. 6, 7, not shown). The core is expanded and collapsed by longitudinal movement of the shaft 3 which movement may be furnished by screwing the rod into or out of one of the blocks 1 as shown in Fig. 1. Several units may be joined together by coupling members as in Figs. 4, 5 (not shown).
GB3432361A 1961-09-25 1961-09-25 A new or improved collapsible core Expired GB954390A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB3432361A GB954390A (en) 1961-09-25 1961-09-25 A new or improved collapsible core
DE19621459257 DE1459257A1 (en) 1961-09-25 1962-09-24 Actuating device for the mold plates of a collapsible core

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3432361A GB954390A (en) 1961-09-25 1961-09-25 A new or improved collapsible core

Publications (1)

Publication Number Publication Date
GB954390A true GB954390A (en) 1964-04-08

Family

ID=10364214

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3432361A Expired GB954390A (en) 1961-09-25 1961-09-25 A new or improved collapsible core

Country Status (2)

Country Link
DE (1) DE1459257A1 (en)
GB (1) GB954390A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102441638A (en) * 2010-10-07 2012-05-09 通用汽车环球科技运作有限责任公司 Mold insert assembly and method of use
EP2712974A1 (en) * 2012-09-27 2014-04-02 Abr Alemar Holding Co., LLC Shrinkable core for forming hollow precast load bearing wall panels

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1907713C3 (en) * 1969-02-15 1981-11-26 Heinrich 7434 Riederich Druba Formwork device for concrete work or the like. for the production of ventilation shafts or similar shaft-like cavities or recesses
DE102020204417A1 (en) 2020-04-06 2021-10-07 Johann Schlüsselbauer Molding core for a mold for the production of hollow concrete bodies and a molding device having such a molding core

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102441638A (en) * 2010-10-07 2012-05-09 通用汽车环球科技运作有限责任公司 Mold insert assembly and method of use
US8714513B2 (en) 2010-10-07 2014-05-06 GM Global Technology Operations LLC Mold insert assembly and method of use
CN102441638B (en) * 2010-10-07 2016-06-15 通用汽车环球科技运作有限责任公司 Mold insert device and using method thereof
EP2712974A1 (en) * 2012-09-27 2014-04-02 Abr Alemar Holding Co., LLC Shrinkable core for forming hollow precast load bearing wall panels
WO2014049069A1 (en) * 2012-09-27 2014-04-03 Abr Alemar Holding Co., Llc Shrinkable core for forming hollow precast load bearing wall panels
CN104822886A (en) * 2012-09-27 2015-08-05 阿尔瓦坦单元有限责任公司 Shrinkable core for forming hollow precast load bearing wall panels
AU2013322610B2 (en) * 2012-09-27 2017-02-16 Alwatan Units Co., Llc. Shrinkable core for forming hollow precast load bearing wall panels
CN104822886B (en) * 2012-09-27 2017-07-18 阿尔瓦坦单元有限责任公司 Collapsible core for forming hollow pre-cast load-bearing wall panel
US9878466B2 (en) 2012-09-27 2018-01-30 Alwatan Units Co., Llc Shrinkable core for forming hollow precast load bearing wall panels

Also Published As

Publication number Publication date
DE1459257A1 (en) 1968-11-21

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