GB349524A - Improvements in or relating to vulcanisers - Google Patents

Improvements in or relating to vulcanisers

Info

Publication number
GB349524A
GB349524A GB5516/31A GB551631A GB349524A GB 349524 A GB349524 A GB 349524A GB 5516/31 A GB5516/31 A GB 5516/31A GB 551631 A GB551631 A GB 551631A GB 349524 A GB349524 A GB 349524A
Authority
GB
United Kingdom
Prior art keywords
mould
rubber
depressions
crack
ram
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
GB5516/31A
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.)
Bridgestone Firestone Inc
Original Assignee
Firestone Tire and Rubber Co
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
Priority claimed from US375625A external-priority patent/US1908282A/en
Application filed by Firestone Tire and Rubber Co filed Critical Firestone Tire and Rubber Co
Priority to GB5516/31A priority Critical patent/GB349524A/en
Priority to FR689312D priority patent/FR689312A/en
Publication of GB349524A publication Critical patent/GB349524A/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

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

349,524. Vulcanizing tyres. FIRESTONE TYRE & RUBBER CO., Ltd., Gt. West Road, Brentford, Middlesex.-(Firestone Tire & Rubber Co.; Akron, Ohio, U.S.A.) Nov. 21, 1929, No. 5516/31. Divided on 344,345. [Class 70.] A tyre-vulcanizing mould having a series of depressions in the moulding surface for moulding a non-skid thread, is provided with suction means for withdrawing air or gases from the depressions as the rubber becomes plastic. Means may also be provided for insulating the outside of the heating chambers. In the construction shown in Fig. 1, the mould 20, 21 is surrounded by a space 34 adapted to be evacuated by a pipe 35 whereby an insulating vacuum is provided and air is withdrawn from the mould through the crack between the mould halves. The mould halves are adapted to be forced together by a ram 22 which carries the upper mould half. In a modification, Fig. 3, the vacuum jacket is dispensed with, and an annular vacuum chamber 34a is provided around the crack between the mould halves. The lower mould half 20a is carried by a ram 22a. Reference has been directed by the Comptroller to Specification 298,140, [Class 70, Indiarubber &c.].
GB5516/31A 1929-07-03 1929-11-21 Improvements in or relating to vulcanisers Expired GB349524A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB5516/31A GB349524A (en) 1929-07-03 1929-11-21 Improvements in or relating to vulcanisers
FR689312D FR689312A (en) 1929-07-03 1930-01-21 Improvements to vulcanizing devices

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US375625A US1908282A (en) 1929-07-03 1929-07-03 Vulcanizer
GB5516/31A GB349524A (en) 1929-07-03 1929-11-21 Improvements in or relating to vulcanisers

Publications (1)

Publication Number Publication Date
GB349524A true GB349524A (en) 1931-05-21

Family

ID=26239940

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5516/31A Expired GB349524A (en) 1929-07-03 1929-11-21 Improvements in or relating to vulcanisers

Country Status (2)

Country Link
FR (1) FR689312A (en)
GB (1) GB349524A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4743322A (en) * 1983-01-15 1988-05-10 Apsley Metals Limited Molding of elastomeric material components

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4743322A (en) * 1983-01-15 1988-05-10 Apsley Metals Limited Molding of elastomeric material components

Also Published As

Publication number Publication date
FR689312A (en) 1930-09-04

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