GB495376A - Improvements in and relating to a method of and means for the manufacture of easily frangible vessels, bulbs and the like - Google Patents

Improvements in and relating to a method of and means for the manufacture of easily frangible vessels, bulbs and the like

Info

Publication number
GB495376A
GB495376A GB1287637A GB1287637A GB495376A GB 495376 A GB495376 A GB 495376A GB 1287637 A GB1287637 A GB 1287637A GB 1287637 A GB1287637 A GB 1287637A GB 495376 A GB495376 A GB 495376A
Authority
GB
United Kingdom
Prior art keywords
tube
shaft
softened
fingers
glass
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
GB1287637A
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.)
ATLAS SPRINKLER Co Ltd
Original Assignee
ATLAS SPRINKLER 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 ATLAS SPRINKLER Co Ltd filed Critical ATLAS SPRINKLER Co Ltd
Priority to GB1287637A priority Critical patent/GB495376A/en
Publication of GB495376A publication Critical patent/GB495376A/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
    • C03B23/09—Reshaping the ends, e.g. as grooves, threads or mouths
    • C03B23/095—Reshaping the ends, e.g. as grooves, threads or mouths by rolling
    • 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
    • C03B23/09—Reshaping the ends, e.g. as grooves, threads or mouths
    • C03B23/092—Reshaping the ends, e.g. as grooves, threads or mouths by pressing

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)

Abstract

495,376. Glass manufacture ; fireextinguishing. ATLAS SPRINKLER CO., Ltd., and CHISHOLM, D. H. May 5, 1937, No. 12876. [Class 56] [Also in Group XXI] A frangible bulb, for use as a strut to support the valve in an automatic sprinkler or fireextinguisher, is made of glass or like material and has a cylindrical medial portion of substantially uniform wall thickness and closed end portions. The bulb is made from a tube 1, Fig. 1, by heating the ends of the tube until the glass is soft, and then closing or shaping the softened ends by the pressure of shaping-tools 2, 3 or by means of a mould 5, Fig. 3. The tube may be held by spring fingers 17, Fig. 5, secured to the lower end of a shaft 15 which can be rotated by a driving shaft 30 and moved longitudinally by means of a lever 40. A mould 38 is arranged coaxially, and rotated in unison, with the shaft 15. A rod 51, slidable within the shaft 15, is used for removing the finished bulb from the fingers 17. The end of the tube between the fingers 17 is softened by heating, and the lever 40 is then moved to force the softened glass into the mould 38. In another construction, the fingers may be mounted on the end of a shaft which is provided with a heat-insulating covering to enable the device to be held in the hand. In a further construction, the tube is held in an aperture 53, Fig. 7, in a disc 52 which is rotatably mounted in grooved supporting-pulleys 54 driven by a belt. The end of the tube, when softened by heat, is shaped by the pressure of suitable rollers 65, 66 mounted on arms 63, 64, respectively, pivoted to the base of the apparatus. The moulds and shaping-tools may be heated if desired.
GB1287637A 1937-05-05 1937-05-05 Improvements in and relating to a method of and means for the manufacture of easily frangible vessels, bulbs and the like Expired GB495376A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1287637A GB495376A (en) 1937-05-05 1937-05-05 Improvements in and relating to a method of and means for the manufacture of easily frangible vessels, bulbs and the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1287637A GB495376A (en) 1937-05-05 1937-05-05 Improvements in and relating to a method of and means for the manufacture of easily frangible vessels, bulbs and the like

Publications (1)

Publication Number Publication Date
GB495376A true GB495376A (en) 1938-11-07

Family

ID=10012759

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1287637A Expired GB495376A (en) 1937-05-05 1937-05-05 Improvements in and relating to a method of and means for the manufacture of easily frangible vessels, bulbs and the like

Country Status (1)

Country Link
GB (1) GB495376A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2711055A (en) * 1952-06-25 1955-06-21 Itt Method of reshaping tubular stock
FR2314150A1 (en) * 1975-06-13 1977-01-07 Heraeus Schott Quarzschmelze TUBE MADE OF VITREOUS MATERIAL WITH NON-CIRCULAR SECTION, INCLUDING AT LEAST ONE CONICAL END, AND PROCESS FOR ITS PRODUCTION
DE102011013623A1 (en) * 2011-03-02 2012-09-06 Schott Ag Producing glass tube useful for producing ampoules and vials, comprises providing tubular semifinished product in form of tube length with two ends comprising first and second end, and pressing first end with molding tool

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2711055A (en) * 1952-06-25 1955-06-21 Itt Method of reshaping tubular stock
FR2314150A1 (en) * 1975-06-13 1977-01-07 Heraeus Schott Quarzschmelze TUBE MADE OF VITREOUS MATERIAL WITH NON-CIRCULAR SECTION, INCLUDING AT LEAST ONE CONICAL END, AND PROCESS FOR ITS PRODUCTION
DE102011013623A1 (en) * 2011-03-02 2012-09-06 Schott Ag Producing glass tube useful for producing ampoules and vials, comprises providing tubular semifinished product in form of tube length with two ends comprising first and second end, and pressing first end with molding tool
DE102011013623B4 (en) * 2011-03-02 2017-08-31 Schott Ag Process for the preparation of a glass tube suitable for the manufacture of ampoules and vials and apparatus for the production thereof

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