GB1173319A - Apparatus and process for the production of concrete pre-cast units - Google Patents

Apparatus and process for the production of concrete pre-cast units

Info

Publication number
GB1173319A
GB1173319A GB50420/66A GB5042066A GB1173319A GB 1173319 A GB1173319 A GB 1173319A GB 50420/66 A GB50420/66 A GB 50420/66A GB 5042066 A GB5042066 A GB 5042066A GB 1173319 A GB1173319 A GB 1173319A
Authority
GB
United Kingdom
Prior art keywords
mould
moulds
joists
steam
partitions
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
GB50420/66A
Inventor
Hans Haller
Erwin Wendl
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.)
WENDL DIPL ING ERWIN
Original Assignee
WENDL DIPL ING ERWIN
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 WENDL DIPL ING ERWIN filed Critical WENDL DIPL ING ERWIN
Publication of GB1173319A publication Critical patent/GB1173319A/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
    • B28B7/10—Moulds with means incorporated therein, or carried thereby, for ejecting or detaching the moulded article
    • 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
    • B28B7/24—Unitary mould structures with a plurality of moulding spaces, e.g. moulds divided into multiple moulding spaces by integratable partitions, mould part structures providing a number of moulding spaces in mutual co-operation
    • B28B7/241—Detachable assemblies of mould parts providing only in mutual co-operation a number of complete moulding spaces
    • B28B7/246—Detachable assemblies of mould parts providing only in mutual co-operation a number of complete moulding spaces for making oblong objects, e.g. girders
    • 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
    • B28B7/40—Moulds; Cores; Mandrels characterised by means for modifying the properties of the moulding material
    • B28B7/42—Moulds; Cores; Mandrels characterised by means for modifying the properties of the moulding material for heating or cooling, e.g. steam jackets, by means of treating agents acting directly on the moulding material

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)

Abstract

1,173,319. Moulding concrete. H. HALLER and E. WENDL. 10 Nov., 1966 [12 Nov., 1965], No. 50420/66. Heading B5A. [Also in Division E1] Precast reinforced concrete units e.g. floor joists (see Division E1) are moulded and steam cured on a building site in an assembly of moulds defining a steam-tight enclosure which is heated from a mobile steam plant. The moulds 2, 2<SP>1</SP>, 2<SP>11</SP> are provided with insulation (35) packed walls (34) (Figs. 3a and 3b, not shown) and stacked in a vertical arrangement with the upper or lower edges (16) of the walls projecting into heat-insulating material (15) e.g. sand or foam insulant, in a channel-section edge of the wall of a respective lower or upper mould, and the topmost mould 2<SP>11</SP> is surmounted by a steamtight lid 9. Each mould comprises a plurality of cavities for forming the joists 7 which may be defined between fixed upwardly tapering partitions 19 or removable downwardly tapered partitions 18 whereby ejection of the moulded joist is facilitated. The removable partitions 18 are aligned by clearances (12) therein, Figs. la and lb (not shown), into which locate members (11) joined outside the enclosure by a vertical cross member (13). Steam for heating, and air or water for cooling, is circulated throughout the assembly via pipes 20 connected to plates (28) at either end of the mould assembly and supplied from a portable steam generator and distributer. The moulds 2 may be assembled end to end to produce joists of multiples of a unit length. Each mould 2, which may comprise screwed together elements, is conveyed to the casting site by a crane or an overhead gantry crane (8) on rails (27) which also serves to remove the cast joists and the empty moulds so that the placing of reinforcement and concrete can recommence in the bottom mould 2. The moulds are provided with a curvature in the longitudinal joist direction, which may be variable, and the joist section may be varied by using different linings whereby the sag of the joists under full installed load is accounted for. Mould temperatures are measured at a remote location by tele-thermometers installed in the moulds.
GB50420/66A 1965-11-12 1966-11-10 Apparatus and process for the production of concrete pre-cast units Expired GB1173319A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT1022965A AT285409B (en) 1965-11-12 1965-11-12 Form set consisting of several shapes that can be stacked on top of one another and a method for manufacturing reinforced concrete precast elements with the form set

Publications (1)

Publication Number Publication Date
GB1173319A true GB1173319A (en) 1969-12-10

Family

ID=3620832

Family Applications (1)

Application Number Title Priority Date Filing Date
GB50420/66A Expired GB1173319A (en) 1965-11-12 1966-11-10 Apparatus and process for the production of concrete pre-cast units

Country Status (4)

Country Link
US (1) US3491417A (en)
AT (1) AT285409B (en)
FR (1) FR1502125A (en)
GB (1) GB1173319A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2420372A (en) * 2004-11-18 2006-05-24 Philip Mcdonald Insulating concrete during curing

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3999913A (en) * 1974-11-27 1976-12-28 Abraham Branitzky Concrete shaping and stressing means
US5747074A (en) 1995-02-02 1998-05-05 Ollendick; David P. Apparatus for the manufacturing of prestressed reinforced concrete railroad ties and the like

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1312631A (en) * 1919-08-12 Buildihg-block mold
US942092A (en) * 1908-05-06 1909-12-07 Ernest May Block-mold.
US1276264A (en) * 1918-02-23 1918-08-20 George W Porter Knockdown molding apparatus.
US1389722A (en) * 1920-01-05 1921-09-06 John G Webb Mold for plural castings
US1925733A (en) * 1930-02-11 1933-09-05 Pandolfi Paolo Franco Concrete block mold
US2239195A (en) * 1939-01-23 1941-04-22 William P Witherow Method and apparatus for molding slabs
US2632725A (en) * 1943-08-06 1953-03-24 Marks Alvin Method of laminating lenses
US2499532A (en) * 1947-02-07 1950-03-07 Shearer David Mcd Mold for casting revetment mat sections
US2661496A (en) * 1952-07-26 1953-12-08 Us Rubber Co Method of and apparatus for supplying steam to the interior of advancing molds
US2886876A (en) * 1956-03-07 1959-05-19 Wilson John Hart Apparatus for molding concrete building slabs
US2983983A (en) * 1956-08-27 1961-05-16 Miami Stone Inc Sectional mold for use in producing blocks of cementitious material

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2420372A (en) * 2004-11-18 2006-05-24 Philip Mcdonald Insulating concrete during curing

Also Published As

Publication number Publication date
AT285409B (en) 1970-10-27
FR1502125A (en) 1967-11-18
US3491417A (en) 1970-01-27

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees