GB1431818A - Cutting glass - Google Patents
Cutting glassInfo
- Publication number
- GB1431818A GB1431818A GB1622973A GB1622973A GB1431818A GB 1431818 A GB1431818 A GB 1431818A GB 1622973 A GB1622973 A GB 1622973A GB 1622973 A GB1622973 A GB 1622973A GB 1431818 A GB1431818 A GB 1431818A
- Authority
- GB
- United Kingdom
- Prior art keywords
- discontinuity
- glass
- wheel
- subsurface
- cut
- 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
- C03B33/00—Severing cooled glass
- C03B33/02—Cutting or splitting sheet glass or ribbons; Apparatus or machines therefor
- C03B33/023—Cutting or splitting sheet glass or ribbons; Apparatus or machines therefor the sheet or ribbon being in a horizontal position
- C03B33/033—Apparatus for opening score lines in glass sheets
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B33/00—Severing cooled glass
- C03B33/09—Severing cooled glass by thermal shock
- C03B33/091—Severing cooled glass by thermal shock using at least one focussed radiation beam, e.g. laser beam
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B33/00—Severing cooled glass
- C03B33/10—Glass-cutting tools, e.g. scoring tools
- C03B33/105—Details of cutting or scoring means, e.g. tips
- C03B33/107—Wheel design, e.g. materials, construction, shape
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Optics & Photonics (AREA)
- Toxicology (AREA)
- Thermal Sciences (AREA)
- Joining Of Glass To Other Materials (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
Abstract
1431818 Cutting glass PPG INDUSTRIES Inc 5 April 1973 [10 April 1972 (3)] 16229/73 Heading C1M A subsurface discontinuity 10 is produced under a major surface 37 of flat glass G along a predetermined path of cut by (a) urging a scoring wheel having a diameter of at least 12 millimetres and a scoring angle of at least 155 degrees against the major surface 37, (b) applying a force of at least 80 kilograms to the scoring wheel and (c) moving the wheel and glass G relative to one another at a speed of at least 25 centimeters per second to produce an indentation 11 in the major surface 37 and, concurrently, the surface discontinuity 10 along the intended path of cut. The glass then has a bending moment applied about the discontinuity to snap the glass to produce a cut edge which may then be finished and/or seamed. The subsurface discontinuity may be a subsurface crack or a subsurface score, both of which are defined. Preferably the wheel has a diameter in the range 18 to 100 millimetres; the cutting angle is between 155 and 170 degrees and the force is between 80 and 460 kilograms. As shown in Fig. 3, the discontinuity 10 may have a ridge 38 and lines 40 to 46, indicating direction of fracture propagation as a cut is run, are split at the discontinuity 10, as at 42, 42<SP>1</SP>; 44, 44<SP>1</SP>. As shown in Fig. 8, the discontinuity comprises two ridges 72, 74 interconnected by modulations or serrations 73. Specification 1,366,639 is referred to and the cutting wheel is as described and claimed in Specification 1,366,640.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US24251072A | 1972-04-10 | 1972-04-10 | |
| US24254972A | 1972-04-10 | 1972-04-10 | |
| US242511A US3865293A (en) | 1972-04-10 | 1972-04-10 | Subsurface cracks |
| US41764973 US3865673A (en) | 1972-04-10 | 1973-11-20 | Method of pseudosubsurface scoring and cutting glass sheets and sheet cut thereby |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1431818A true GB1431818A (en) | 1976-04-14 |
Family
ID=27500086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1622973A Expired GB1431818A (en) | 1972-04-10 | 1973-04-05 | Cutting glass |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE2317027A1 (en) |
| FR (1) | FR2179817B1 (en) |
| GB (1) | GB1431818A (en) |
| NL (1) | NL152523B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2432000A1 (en) * | 1978-07-24 | 1980-02-22 | Saint Gobain | Cutting glass panes to obtain ground chamfers on cut edges - esp. panes for furniture, buildings and automobiles |
| CH626554A5 (en) * | 1978-08-09 | 1981-11-30 | Llodio Vidrierias Sa De | Cutting device for glass |
-
1973
- 1973-04-05 DE DE2317027A patent/DE2317027A1/en not_active Ceased
- 1973-04-05 FR FR7312375A patent/FR2179817B1/fr not_active Expired
- 1973-04-05 GB GB1622973A patent/GB1431818A/en not_active Expired
- 1973-04-05 NL NL737304767A patent/NL152523B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| NL152523B (en) | 1977-03-15 |
| NL7304767A (en) | 1973-10-12 |
| DE2317027A1 (en) | 1973-10-31 |
| FR2179817A1 (en) | 1973-11-23 |
| FR2179817B1 (en) | 1979-10-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |