GB904584A - Improvements in and relating to the manufacture of glass or silica tubing - Google Patents

Improvements in and relating to the manufacture of glass or silica tubing

Info

Publication number
GB904584A
GB904584A GB652859A GB652859A GB904584A GB 904584 A GB904584 A GB 904584A GB 652859 A GB652859 A GB 652859A GB 652859 A GB652859 A GB 652859A GB 904584 A GB904584 A GB 904584A
Authority
GB
United Kingdom
Prior art keywords
tube
mandrel
gas
heated
wire
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
GB652859A
Inventor
Harry Guy Flood
Geoffrey William Scholes
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.)
Philips Components Ltd
Original Assignee
Mullard 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 Mullard Ltd filed Critical Mullard Ltd
Priority to GB652859A priority Critical patent/GB904584A/en
Priority to FR819633A priority patent/FR1249613A/en
Priority to BE588020A priority patent/BE588020A/en
Priority to DEN17943A priority patent/DE1124199B/en
Publication of GB904584A publication Critical patent/GB904584A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B23/00—Re-forming shaped glass
    • C03B23/04—Re-forming tubes or rods
    • C03B23/047—Re-forming tubes or rods by drawing
    • C03B23/0476—Re-forming tubes or rods by drawing onto a forming die, e.g. a mandrel or a wire

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
  • Glass Melting And Manufacturing (AREA)

Abstract

904,584. Producing glass or silica tubes. MULLARD Ltd. Feb. 25, 1959, No. 6528/59. Class 56. To produce a tube from a tube having an internal perimeter not greater than that required in the finished tube, a mandrel having the required shape and dimensions is caused to travel through the tube to be shaped under the action of a constant or substantially constant driving force, such as is provided by weight loading, the tube being heated at the zone of engagement with the mandrel so that the heated zone travels along the tube as the mandrel progresses, the mandrel itself tapering from the shaping portion to a size fitting within the original bore of the tube, a current of a protecting gas being passed through the tube during the process in the direction of travel of the tube relatively to the mandrel which is apertured to permit passage of said gas. The upper part of one form of apparatus as shown in Fig. 2, a lower part in Fig. 3. The tube 31 being treated, is expanded by passage past a mandrel 14, a short enlarged portion being provided at the lower end to permit the initial entry of the mandrel. A weight in the form of a chuck is attached to this lower end. The mandrel is mounted on a wire 7 of refractory material attached to wires of less refractory material by an upper joint 11 and a lower joint, not shown, on which rests a spacer member 23, for example a silica tube, which supports a plug 19 on which the mandrel rests. Resting on the mandrel is a spacer 24, an apertured disc 25 and a tube 26 through which the protecting gas is fed from a side tube 27. The supporting wire for the mandrel is attached to an upper support 10 and carries a weight, not shown, at its bottom end. The tube 31 is heated in the vicinity of the mandrel by a burner which produces a ring of flame from a slit 39. This burner may be of the same general form as described in Specification 762,674. Gas is supplied through pipes 41 and cooling water through pipes 45. The couplings for the ends of the wire 7 are described in detail. Specification 640,878 also is referred to.
GB652859A 1959-02-25 1959-02-25 Improvements in and relating to the manufacture of glass or silica tubing Expired GB904584A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB652859A GB904584A (en) 1959-02-25 1959-02-25 Improvements in and relating to the manufacture of glass or silica tubing
FR819633A FR1249613A (en) 1959-02-25 1960-02-25 Method and device for deforming the transverse profile of a quartz or glass tube
BE588020A BE588020A (en) 1959-02-25 1960-02-25 Process for deforming the transverse profile of a quartz or glass tube.
DEN17943A DE1124199B (en) 1959-02-25 1960-02-25 Method for calibrating a quartz or glass tube with the aid of a mandrel that is relatively movable therein and a device for performing this method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB652859A GB904584A (en) 1959-02-25 1959-02-25 Improvements in and relating to the manufacture of glass or silica tubing

Publications (1)

Publication Number Publication Date
GB904584A true GB904584A (en) 1962-08-29

Family

ID=9816155

Family Applications (1)

Application Number Title Priority Date Filing Date
GB652859A Expired GB904584A (en) 1959-02-25 1959-02-25 Improvements in and relating to the manufacture of glass or silica tubing

Country Status (4)

Country Link
BE (1) BE588020A (en)
DE (1) DE1124199B (en)
FR (1) FR1249613A (en)
GB (1) GB904584A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5010943A (en) * 1989-01-10 1991-04-30 Boyer Gregory J Lightweight insulating partition
EP2251310A1 (en) * 2009-05-13 2010-11-17 Corning Incorporated Methods and systems for forming continuous glass sheets

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB762674A (en) * 1953-10-08 1956-12-05 Mullard Radio Valve Co Ltd Improvements in or relating to burners

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5010943A (en) * 1989-01-10 1991-04-30 Boyer Gregory J Lightweight insulating partition
EP2251310A1 (en) * 2009-05-13 2010-11-17 Corning Incorporated Methods and systems for forming continuous glass sheets
US8875543B2 (en) 2009-05-13 2014-11-04 Corning Incorporated Methods and systems for forming continuous glass sheets

Also Published As

Publication number Publication date
DE1124199B (en) 1962-02-22
FR1249613A (en) 1960-12-30
BE588020A (en) 1960-08-25

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