US112877A - Improvement in glass for the manufacture of spectacles - Google Patents
Improvement in glass for the manufacture of spectacles Download PDFInfo
- Publication number
- US112877A US112877A US112877DA US112877A US 112877 A US112877 A US 112877A US 112877D A US112877D A US 112877DA US 112877 A US112877 A US 112877A
- Authority
- US
- United States
- Prior art keywords
- glass
- spectacles
- improvement
- manufacture
- parts
- 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 - Lifetime
Links
- 239000011521 glass Substances 0.000 title description 10
- 238000004519 manufacturing process Methods 0.000 title description 2
- 238000000034 method Methods 0.000 description 5
- 239000004615 ingredient Substances 0.000 description 4
- 239000004576 sand Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 238000004040 coloring Methods 0.000 description 2
- QDOXWKRWXJOMAK-UHFFFAOYSA-N dichromium trioxide Chemical compound O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000010975 amethyst Substances 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000005304 optical glass Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/062—Glass compositions containing silica with less than 40% silica by weight
- C03C3/07—Glass compositions containing silica with less than 40% silica by weight containing lead
Definitions
- the coloring ingredients are then mixed with the glass when in the state of fusion, because, if the coloring matter had been added before, the glass "would have been too deeply and irregularly colored; but it is most essential to first get the sand or above-specified mass of the finest andclearest character possible, as a superior colored glass cannot be produced unless this part of the process isqperi'ect.
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Eyeglasses (AREA)
Description
1 that arm.
ttni'tzt sate TnoMAs-ATWooo WILLSON, on READING, PENNSYLVANIA.
Letters Patent No. 112,877, dated March 21, 1871.
, IMPROVEMENT lN- GLASS FOR THE MANUFACTURE OF SPECTACLES.
The Schedule referred to in these Letters Patent and making part of the name.
.ner, to wit:
In the first place I use red lead, eighty-nine parts; nit-er, fifty parts; whitechalk, one part; and white optical sand, sixty parts,
I first calcine and wash the white sand with mnriatic acid, and then put the above-named ingredients with it into a crucible holding double its capacity, by weight. After aboutthirty-six hours it will be fused. It is then taken out and poured into fresh cool'water,
,which granulates it, afterward dried and reduced to a fine powder, then washed again with acid, (should there be any appearance of iron, which is known by the discoloration it produces in the glass,) and the mass'is again fused.
The coloring ingredients are then mixed with the glass when in the state of fusion, because, if the coloring matter had been added before, the glass "would have been too deeply and irregularly colored; but it is most essential to first get the sand or above-specified mass of the finest andclearest character possible, as a superior colored glass cannot be produced unless this part of the process isqperi'ect.
At this stage of the process, which is the thirdmelting, I introduce the ingredients for producing the proper shade of pink or amethyst colors.
These ingredients are mixed as follows: oxide of manganese, nine parts; oxide of chromium, three parts. To these I add eighty-eight parts of the above mass of optical glass.
The use ofv the oxide of chromium in combination with the manganese at this stage of the process is important for-the purpose of forming a perfect flux to unite the. glass and manganese,,w'hich, without the chromium, (in the process of putting the mixture in the mold,) the heavier of the two would sink to the bottom in cooling and leave the mass streaked or with an irregular color.
1 I now cast the whole composition into a mold about two and a half inches square by four inches long, in
stead of as usually done blowing it into sheets.
After the annealing of the mass it is ready to he cut into spectacle-lenses; and it is cut crosswise, at right angles with the grain, and afterward polished in the usual manner employed in polishing spectaclelenses. This cutting process across the grain renders the colored glass apparently white to the eye of the wearer when set in a spectacle-frame, thus producing lease and comfort to the eye, and relieving theeye from the effect of the bright penetrating rays of light. What 1 claim as my invention, and desire to secure by Letters Patent, is-
I The alloy and process of making pink or colored glasses which will render the colored glasses apparently white to the eye of 'the wearer and relieve the eye from the effect of the bright penetrating rays of light, as herein described and set forth.
THOMAS ATWOOD WILLSON. Witnesses:
EDM. 1 BROWN, J. FRANKLIN REIGART
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US112877A true US112877A (en) | 1871-03-21 |
Family
ID=2182344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US112877D Expired - Lifetime US112877A (en) | Improvement in glass for the manufacture of spectacles |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US112877A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030025150A1 (en) * | 2001-07-23 | 2003-02-06 | Seiko Epson Corporation | Non-volatile semiconductor memory device |
-
0
- US US112877D patent/US112877A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030025150A1 (en) * | 2001-07-23 | 2003-02-06 | Seiko Epson Corporation | Non-volatile semiconductor memory device |
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