GB668387A - Apparatus for use in the production from mouldable material of tubes or ring-like members - Google Patents

Apparatus for use in the production from mouldable material of tubes or ring-like members

Info

Publication number
GB668387A
GB668387A GB400149A GB400149A GB668387A GB 668387 A GB668387 A GB 668387A GB 400149 A GB400149 A GB 400149A GB 400149 A GB400149 A GB 400149A GB 668387 A GB668387 A GB 668387A
Authority
GB
United Kingdom
Prior art keywords
mandrel
piston
pressure
casing
tubes
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
GB400149A
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.)
JOSEPH ALEXANDER WALLACE MILLS
WILFRED ARTHUR HANDLEY
Dowty Equipment Ltd
Original Assignee
JOSEPH ALEXANDER WALLACE MILLS
WILFRED ARTHUR HANDLEY
Dowty Equipment 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 JOSEPH ALEXANDER WALLACE MILLS, WILFRED ARTHUR HANDLEY, Dowty Equipment Ltd filed Critical JOSEPH ALEXANDER WALLACE MILLS
Priority to GB400149A priority Critical patent/GB668387A/en
Publication of GB668387A publication Critical patent/GB668387A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/027—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles having an axis of symmetry
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2021/00—Use of unspecified rubbers as moulding material

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

668,387. Mouldings; tubes and rings from rubber &c. DOWTY EQUIPMENT. Ltd.. MILLS, J. A. W., and HANDLEY, W. A. April 21, 1950. [Feb. 14, 1949] No. 4001/49. Class 87(ii). A tube or ring is formed by packing slightly more material, e.g. uncured rubber, than is required to form the finished article into a casing 27, closed at its lower end by a hydraulically operated mandrel 21. A piston 33 is placed on the material, and an end plate 30 is fixed to the top of the casing by arms 32. A hydraulic pressure-head 39 is lowered against the piston 33, until the pressure in the cylinder 37 increases to a predetermined value at which a relief valve 45 comes into operation. The mandrel 21 is then forced up slowly through the material, while the pressure is maintained constant by the cylinder 37 and the valve 45, until the mandrel engages in a conical recess in the piston and the piston abuts against the end plate 30. Excess material escapes through a hole 34<SP>1</SP> in the piston. The pressure-head is raised, by fluid pressure, and the unit comprising the casing 27, the piston 33, and the mandrel 21 are removed along rails 25 and 26 and placed in a curing chamber. After curing, the mandrel is ejected, e.g. by a ram. The machine may be used the other way up. The relief valve may be replaced by a variable escape orifice. Liners 29 may be used to make tubes of various sizes. The mandrel and the inner surfaces of the liners may be chromium plated.
GB400149A 1949-02-14 1949-02-14 Apparatus for use in the production from mouldable material of tubes or ring-like members Expired GB668387A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB400149A GB668387A (en) 1949-02-14 1949-02-14 Apparatus for use in the production from mouldable material of tubes or ring-like members

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB400149A GB668387A (en) 1949-02-14 1949-02-14 Apparatus for use in the production from mouldable material of tubes or ring-like members

Publications (1)

Publication Number Publication Date
GB668387A true GB668387A (en) 1952-03-19

Family

ID=9768898

Family Applications (1)

Application Number Title Priority Date Filing Date
GB400149A Expired GB668387A (en) 1949-02-14 1949-02-14 Apparatus for use in the production from mouldable material of tubes or ring-like members

Country Status (1)

Country Link
GB (1) GB668387A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2455162C1 (en) * 2010-12-21 2012-07-10 Открытое акционерное общество "Композит" (ОАО "Композит") Device for fabricating tubes from composite materials

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2455162C1 (en) * 2010-12-21 2012-07-10 Открытое акционерное общество "Композит" (ОАО "Композит") Device for fabricating tubes from composite materials

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