GB940414A - Improved heating device - Google Patents

Improved heating device

Info

Publication number
GB940414A
GB940414A GB380362A GB380362A GB940414A GB 940414 A GB940414 A GB 940414A GB 380362 A GB380362 A GB 380362A GB 380362 A GB380362 A GB 380362A GB 940414 A GB940414 A GB 940414A
Authority
GB
United Kingdom
Prior art keywords
die
moulding
cooling
heating
transformer
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
GB380362A
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.)
FR DES VERRES IGARD SOC
Original Assignee
FR DES VERRES IGARD SOC
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 FR DES VERRES IGARD SOC filed Critical FR DES VERRES IGARD SOC
Publication of GB940414A publication Critical patent/GB940414A/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
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • B29D11/00009—Production of simple or compound lenses
    • 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
    • B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Ophthalmology & Optometry (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

940,414. Heating and cooling dies. SOC. FRANCAISE DES VERRES IGARD. Feb. 1, 1962 [Nov. 21, 1961], No. 3803/62. Heading B5A. [Also in Division H5] A heating device for effecting the rapid heating of a moulding die comprises a transformer 1 whose secondary winding is shortcircuited by a moulding die 5, the upper part of the die being cooled to prevent or reduce deformation of the die cylinder disc to the effect of the rapid temperature rise. The electrodes 2, 3 of the secondary winding of the transformer are silver soldered to the base-plate 4 of the moulding die, whilst the upper portion 7 of the die cylinder comprises a hollow annulus 8 for the continuous circulation of a cooling fluid through inlet and outlet pipes 10, 11. The die may be adapted for the production of optical lenses by the polymerization of synthetic resin, and the moulding process takes place below the level of the cooling annulus 8, a plunger 14 being provided for the easy removal of the finished lens.
GB380362A 1961-11-21 1962-02-01 Improved heating device Expired GB940414A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR879593A FR1313911A (en) 1961-11-21 1961-11-21 Advanced heater

Publications (1)

Publication Number Publication Date
GB940414A true GB940414A (en) 1963-10-30

Family

ID=8767145

Family Applications (1)

Application Number Title Priority Date Filing Date
GB380362A Expired GB940414A (en) 1961-11-21 1962-02-01 Improved heating device

Country Status (4)

Country Link
BE (1) BE613259A (en)
FR (1) FR1313911A (en)
GB (1) GB940414A (en)
LU (1) LU41125A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2120143A (en) * 1982-05-21 1983-11-30 Gnb Batteries Inc Electrically heatable mold and method of casting metal straps

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2120143A (en) * 1982-05-21 1983-11-30 Gnb Batteries Inc Electrically heatable mold and method of casting metal straps
US4573514A (en) * 1982-05-21 1986-03-04 Gnb Batteries Inc. Electrically heatable mold and method of casting metal straps

Also Published As

Publication number Publication date
LU41125A1 (en) 1962-03-20
BE613259A (en) 1962-05-16
FR1313911A (en) 1963-01-04

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