GB800516A - Process for making hollow bodies of asbestos cement - Google Patents

Process for making hollow bodies of asbestos cement

Info

Publication number
GB800516A
GB800516A GB32765/55A GB3276555A GB800516A GB 800516 A GB800516 A GB 800516A GB 32765/55 A GB32765/55 A GB 32765/55A GB 3276555 A GB3276555 A GB 3276555A GB 800516 A GB800516 A GB 800516A
Authority
GB
United Kingdom
Prior art keywords
mould
cement
core
asbestos
pipe
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
GB32765/55A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB800516A publication Critical patent/GB800516A/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
    • B28B7/34—Moulds, cores, or mandrels of special material, e.g. destructible materials
    • B28B7/344—Moulds, cores, or mandrels of special material, e.g. destructible materials from absorbent or liquid- or gas-permeable materials, e.g. plaster moulds in general
    • 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
    • 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
    • B28B7/36—Linings or coatings, e.g. removable, absorbent linings, permanent anti-stick coatings; Linings becoming a non-permanent layer of the moulded article
    • B28B7/368—Absorbent linings
    • 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
    • B28B7/46—Moulds; Cores; Mandrels characterised by means for modifying the properties of the moulding material for humidifying or dehumidifying

Abstract

800,516. Moulding hollow asbestos-cement articles. MARCHIOLI, G., and GREMIGNI, G. Nov. 16, 1955 [Dec. 29, 1954], No. 32765/55. Class 87(2). Hollow articles of asbestos cement having an external surface other than a surface of revolution are formed in a sectional mould with its cavity lined with wire gauze 4 permanently secured to the shaped surface of the mould sections, each section of the mould having conduits 3 for draining water squeezed out of asbestos-cement mix through the pressure of an inflated core 7. The mould is in two parts 1, 2 to which the gauze 4 is fixed by soldering at suitable points. The core, e.g., of rubber, may be inflated through a pipe 8. The upper part 1 of the mould is enclosed in a jacket 5 into which air may be admitted through a pipe 6. The ends of the mould are closed by covers 11 slidable in grooves. The asbestos cement is cut into pieces suitable to line the gauze, their edges being shaped to give smooth joints, and arranged in the two mould halves. The core 7 is located and the mould assembled. The mould is put in a press and compressed air is forced into the core ; thus water is squeezed out of the cement and escapes through the channels 3. In dismantling, suction is applied through the pipe 6 and the upper mould part 1 lifted with the moulded article, after which the suction is removed to allow the article to be detached.
GB32765/55A 1954-12-29 1955-11-16 Process for making hollow bodies of asbestos cement Expired GB800516A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT800516X 1954-12-29

Publications (1)

Publication Number Publication Date
GB800516A true GB800516A (en) 1958-08-27

Family

ID=11316861

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32765/55A Expired GB800516A (en) 1954-12-29 1955-11-16 Process for making hollow bodies of asbestos cement

Country Status (3)

Country Link
BE (1) BE535357A (en)
CH (1) CH325776A (en)
GB (1) GB800516A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3154756A4 (en) * 2014-07-29 2017-09-13 161508 Canada Inc. System and process for molding of parts made of fiber cement

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3154756A4 (en) * 2014-07-29 2017-09-13 161508 Canada Inc. System and process for molding of parts made of fiber cement

Also Published As

Publication number Publication date
CH325776A (en) 1957-11-30
BE535357A (en)

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