GB432412A - Improvements in or relating to the shaping of flat band tyre cover carcases - Google Patents

Improvements in or relating to the shaping of flat band tyre cover carcases

Info

Publication number
GB432412A
GB432412A GB36349/34A GB3634934A GB432412A GB 432412 A GB432412 A GB 432412A GB 36349/34 A GB36349/34 A GB 36349/34A GB 3634934 A GB3634934 A GB 3634934A GB 432412 A GB432412 A GB 432412A
Authority
GB
United Kingdom
Prior art keywords
tube
shaft
band
fluid
tyre
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
GB36349/34A
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.)
Pirelli and C SpA
Original Assignee
Pirelli SpA
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 Pirelli SpA filed Critical Pirelli SpA
Publication of GB432412A publication Critical patent/GB432412A/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)
    • B29D30/36—Expansion of tyres in a flat form, i.e. expansion to a toroidal shape independently of their building-up process, e.g. of tyres built by the flat-tyres method or by jointly covering two bead-rings
    • 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)
    • B29D30/08—Building tyres
    • B29D30/20—Building tyres by the flat-tyre method, i.e. building on cylindrical drums
    • B29D30/32—Fitting the bead-rings or bead-cores; Folding the textile layers around the rings or cores
    • B29D2030/3214—Locking the beads on the drum; details of the drum in the bead locking areas, e.g. drum shoulders

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Winding Of Webs (AREA)
  • Unwinding Webs (AREA)
  • Surgical Instruments (AREA)

Abstract

432,412. Moulding wheel tyres. SOC. ITALIANA PIRELLI, 21, Via Fabio Filzi, Milan, Italy. Dec. 18, 1934, No. 36349. Convention date, Dec. 20, 1933. [Class 87 (ii)] Flat band carcases for tyre covers are shaped by sliding the band on to a closed rigid - ended flexible tube 1, the ends 2, 3 of which engage the edges of the band, moving the said ends relatively towards one another and simultaneously admitting fluid under pressure to inflate the tube, after which the tube is evacuated to collapse it, one end of the tube or a portion thereof is removed, and the shaped band is pulled off. The tube 1 is clamped to the ends 2, 3 by angle rings 5 which support the tyre band 7 and the whole is carried by a shaft 17, mounted in a frame 12, and connected to the end 2. The frame has two bosses 15, 20 in which are rotatably mounted a bearing block 16 and an extension 21 of the end 3, the two blocks being connected by a rigid tube 27. The shaft 17 is non-rotatably but slidably mounted in the bearing 16 by means of a key 19 and has a thread 28 engaging a nut 29 provided with handles 30. A stop 34 is provided on the end of the shaft. A bush 23, provided with packing 24 of rubber or oil-impregnated hemp forms an air seal for the shaft in the bearing 21. In operation the nut 29 is turned to cause the end 2 to approach the end 3 while fluid under pressure is admitted through the inlet 33 and the block 16 is held against rotation by a screw 31. When this screw is removed the tyre may be rotated for inspection. After the fluid has been evacuated the rim 10 of the end 2 is unscrewed and the tvre removed. The shaft 17 may also be actuated by fluid-operated means. The tube 1 is preferably formed with a somewhat greater diameter in the centre to obviate undue stretching and may be formed of rubber reinforced at the ends with fabric. The end 2 instead of having a detachable rim 10 may be removable bodily. The fluid pressure may also be admitted through a passage in the shaft 17.
GB36349/34A 1933-12-20 1934-12-18 Improvements in or relating to the shaping of flat band tyre cover carcases Expired GB432412A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT432412X 1933-12-20

Publications (1)

Publication Number Publication Date
GB432412A true GB432412A (en) 1935-07-25

Family

ID=11254806

Family Applications (1)

Application Number Title Priority Date Filing Date
GB36349/34A Expired GB432412A (en) 1933-12-20 1934-12-18 Improvements in or relating to the shaping of flat band tyre cover carcases

Country Status (1)

Country Link
GB (1) GB432412A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1106948B (en) * 1956-12-14 1961-05-18 Pirelli Device for manufacturing and shaping pneumatic tires
US3111445A (en) * 1959-07-03 1963-11-19 Kleber Colombes Tire building and shaping drum

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1106948B (en) * 1956-12-14 1961-05-18 Pirelli Device for manufacturing and shaping pneumatic tires
US3111445A (en) * 1959-07-03 1963-11-19 Kleber Colombes Tire building and shaping drum

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