GB387438A - Improvements in or relating to moulds and their manufacture, particularly pneumatic and other tyre moulds - Google Patents

Improvements in or relating to moulds and their manufacture, particularly pneumatic and other tyre moulds

Info

Publication number
GB387438A
GB387438A GB3132631A GB3132631A GB387438A GB 387438 A GB387438 A GB 387438A GB 3132631 A GB3132631 A GB 3132631A GB 3132631 A GB3132631 A GB 3132631A GB 387438 A GB387438 A GB 387438A
Authority
GB
United Kingdom
Prior art keywords
moulds
shell
casting
die
gates
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
GB3132631A
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.)
HAROLD BLACKMORE
Dunlop Rubber Co Ltd
Original Assignee
HAROLD BLACKMORE
Dunlop Rubber Co 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 HAROLD BLACKMORE, Dunlop Rubber Co Ltd filed Critical HAROLD BLACKMORE
Priority to GB3132631A priority Critical patent/GB387438A/en
Publication of GB387438A publication Critical patent/GB387438A/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
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00—Producing pneumatic or solid tyres or parts thereof
    • B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
    • B29D30/0601—Vulcanising tyres; Vulcanising presses for tyres
    • B29D30/0606—Vulcanising moulds not integral with vulcanising presses
    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/42—Moulds or cores; Details thereof or accessories therefor characterised by the shape of the moulding surface, e.g. ribs or grooves
    • 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)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)

Abstract

387,438. Casting tyre and other moulds. DUNLOP RUBBER CO., Ltd., 32, Osnaburgh Street, London, DAVIES, T. E. and BLACKMORE, H., Fort Dunlop, Birmingham. Nov. 12, 1931, No. 31326. [Class 83 (i).] Casting - machines ; moulds ; clamping moulds.-Tyre and other moulds or cores are made by die-casting metal on a foundation so as to provide a mould surface of required form. The cast metal forms only part of the mould surface and the foundation may be fitted into a reinforcing shell or directly into vulcanizing apparatus. The foundation shell 1 is carried by a rotatable table 19, Fig. 2, provided, if desired, with indexing mechanism. A die 41, having a cavity corresponding to required transverse ribs to be cast, is clamped by means of a toggle 44 to the inside of the shell 1, the outside being supported by a formation of the table or an adjustable arm 48. A casting- machine 11 is pivoted on a shaft 25 and supported by a spring 33 suspended from a shaft 29, both shafts being adjustably secured on rails 26. The machine is normally depressed by a cam 37, on the shaft 29, engaging a projection 34, but in the position shown the cam allows the spring 33 to force the nozzle 23 into engagement with one of the gates 24 formed in the shell. The metal is forced in by compressed air through a passage 13 in the closure 14. Undercut grooves 6, Fig. 1, or holes 7, 9 are formed in the shell and in any circumferential ribs 8 thereof. The gates 24 may then be plugged. In modifications other means may be used for introducing the molten metal, a gate may be formed in the die instead of gates in the shell, the die may be heated in any way, the rotation of the table may sever runners or otherwise finish the casting and any of the operations may be performed by power means, the whole cycle being carried out automatically if desired.
GB3132631A 1931-11-12 1931-11-12 Improvements in or relating to moulds and their manufacture, particularly pneumatic and other tyre moulds Expired GB387438A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3132631A GB387438A (en) 1931-11-12 1931-11-12 Improvements in or relating to moulds and their manufacture, particularly pneumatic and other tyre moulds

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3132631A GB387438A (en) 1931-11-12 1931-11-12 Improvements in or relating to moulds and their manufacture, particularly pneumatic and other tyre moulds

Publications (1)

Publication Number Publication Date
GB387438A true GB387438A (en) 1933-02-09

Family

ID=10321466

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3132631A Expired GB387438A (en) 1931-11-12 1931-11-12 Improvements in or relating to moulds and their manufacture, particularly pneumatic and other tyre moulds

Country Status (1)

Country Link
GB (1) GB387438A (en)

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