GB439537A - Improvements in electric furnaces for heating sheets of plate glass or sheet glass before tempering - Google Patents
Improvements in electric furnaces for heating sheets of plate glass or sheet glass before temperingInfo
- Publication number
- GB439537A GB439537A GB106935A GB106935A GB439537A GB 439537 A GB439537 A GB 439537A GB 106935 A GB106935 A GB 106935A GB 106935 A GB106935 A GB 106935A GB 439537 A GB439537 A GB 439537A
- Authority
- GB
- United Kingdom
- Prior art keywords
- plates
- walls
- furnace
- heated
- heating
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B29/00—Reheating glass products for softening or fusing their surfaces; Fire-polishing; Fusing of margins
- C03B29/04—Reheating glass products for softening or fusing their surfaces; Fire-polishing; Fusing of margins in a continuous way
- C03B29/14—Reheating glass products for softening or fusing their surfaces; Fire-polishing; Fusing of margins in a continuous way with vertical displacement of the products
- C03B29/16—Glass sheets
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B29/00—Reheating glass products for softening or fusing their surfaces; Fire-polishing; Fusing of margins
- C03B29/04—Reheating glass products for softening or fusing their surfaces; Fire-polishing; Fusing of margins in a continuous way
- C03B29/06—Reheating glass products for softening or fusing their surfaces; Fire-polishing; Fusing of margins in a continuous way with horizontal displacement of the products
- C03B29/08—Glass sheets
- C03B29/10—Glass sheets being in a vertical position
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- General Induction Heating (AREA)
- Furnace Details (AREA)
Abstract
439,537. Glass manufacture. ASSUREX LE ROI DES VERRES DE SECURITE MAGNIEN, MONNIER, & CIE, 231, Rue du Faubourg St. Martin, Paris. Jan. 11, 1935, No. 1069. Convention date, Jan. 15, 1934. [Class 56] [See also Groups XII and XI] In the heating of glass plates prior to tempering, the plates 4 are suspended from supports 5 in a furnace 1 in which the heating is effected by radiation from uniformly heated metal walls 2, 3, the free space between the plates 4 and the walls 2, 3 being reduced to such an extent that the formation of convection currents in the atmosphere enveloping the plates is avoided. In a furnace having a height of 1.5 metres, the distance between the walls 2, 3 is within the range 70 to 150 m.m. Fig. 1 shows a furnace in which the walls 2, 3 are heated by vertically spaced electric resistance elements 6, while Fig. 2 shows an induction furnace encircled by a primary 8 and having series of superposed secondaries constituting the side walls 2, 3. Each secondary consists of a sheet 9 of non-magnetic conducting material which completely surrounds a longitudinal band formed of a magnetic metal whose magnetism disappears at a temperature slightly higher than that to which the plates 4 are to be heated.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR780505T | 1934-01-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB439537A true GB439537A (en) | 1935-12-09 |
Family
ID=9204902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB106935A Expired GB439537A (en) | 1934-01-15 | 1935-01-11 | Improvements in electric furnaces for heating sheets of plate glass or sheet glass before tempering |
Country Status (5)
| Country | Link |
|---|---|
| CH (1) | CH181639A (en) |
| DE (1) | DE665534C (en) |
| FR (1) | FR780505A (en) |
| GB (1) | GB439537A (en) |
| NL (1) | NL43083C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1084227A (en) * | 1964-02-17 | 1900-01-01 |
-
1934
- 1934-01-15 FR FR780505D patent/FR780505A/en not_active Expired
-
1935
- 1935-01-11 GB GB106935A patent/GB439537A/en not_active Expired
- 1935-01-15 CH CH181639D patent/CH181639A/en unknown
- 1935-01-15 NL NL72100A patent/NL43083C/xx active
- 1935-01-15 DE DES116785D patent/DE665534C/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH181639A (en) | 1935-12-31 |
| FR780505A (en) | 1935-04-27 |
| DE665534C (en) | 1938-09-28 |
| NL43083C (en) | 1938-04-15 |
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