FR2268762A1 - Cutting thick glass - by scratching one face and hammering on the other - Google Patents
Cutting thick glass - by scratching one face and hammering on the otherInfo
- Publication number
- FR2268762A1 FR2268762A1 FR7414357A FR7414357A FR2268762A1 FR 2268762 A1 FR2268762 A1 FR 2268762A1 FR 7414357 A FR7414357 A FR 7414357A FR 7414357 A FR7414357 A FR 7414357A FR 2268762 A1 FR2268762 A1 FR 2268762A1
- Authority
- FR
- France
- Prior art keywords
- hammering
- face
- glass
- scratching
- thick 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.)
- Withdrawn
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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
Abstract
Method and appts. for automatically cutting away the edges of a sheet of glass >=6mm thick by scratching a mark and by hammering, is characterized in that after a scratch mark has been made on one face, to separate a narrow strip the length of the edge, the second face is hammered or tapped, all along the trace of the scratch mark to initiate rupture, then the glass is broken by a bending stress across the scratch at a fixed distance from one of the extremities. Straight, clean cuts can be made in thick glass unlike in prior art, without splintering the glass with the force of hammering.
Priority Applications (11)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7414357A FR2268762A1 (en) | 1974-04-25 | 1974-04-25 | Cutting thick glass - by scratching one face and hammering on the other |
AR25843675A AR205566A1 (en) | 1974-04-25 | 1975-01-01 | APPARATUS FOR AUTOMATICALLY CUTTING THE EDGES OF A GLASS SHEET |
US05/570,554 US4049167A (en) | 1974-04-25 | 1975-04-22 | Cutting of glass |
CA225,547A CA1023653A (en) | 1974-04-25 | 1975-04-23 | Cutting of glass |
SE7504709A SE7504709L (en) | 1974-04-25 | 1975-04-23 | PROCEDURE AND APPLIANCE FOR CUTTING GLASS DISCS. |
GB1684675A GB1500316A (en) | 1974-04-25 | 1975-04-23 | Cutting of glass |
AU80470/75A AU491304B2 (en) | 1974-04-25 | 1975-04-23 | Cutting of glass |
BR7503139D BR7502470A (en) | 1974-04-25 | 1975-04-23 | PROCESS AND APPARATUS FOR AUTOMATICALLY TRIMMING THE EDGE OF A GLASS SHEET |
IT2266475A IT1037521B (en) | 1974-04-25 | 1975-04-23 | PROCEDURE AND EQUIPMENT FOR AUTOMATIC EDITING OF THE MARGINS OF GLASS SHEETS BY ENGRAVING AND PERCUSSION |
DE19752518243 DE2518243A1 (en) | 1974-04-25 | 1975-04-24 | METHOD AND DEVICE FOR CUTTING GLASS |
BE155744A BE828353A (en) | 1974-04-25 | 1975-04-24 | METHOD AND DEVICE FOR CUTTING GLASS |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7414357A FR2268762A1 (en) | 1974-04-25 | 1974-04-25 | Cutting thick glass - by scratching one face and hammering on the other |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2268762A1 true FR2268762A1 (en) | 1975-11-21 |
Family
ID=9138094
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7414357A Withdrawn FR2268762A1 (en) | 1974-04-25 | 1974-04-25 | Cutting thick glass - by scratching one face and hammering on the other |
Country Status (3)
Country | Link |
---|---|
BE (1) | BE828353A (en) |
FR (1) | FR2268762A1 (en) |
SE (1) | SE7504709L (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0970923A2 (en) * | 1998-07-07 | 2000-01-12 | Donnelly Mirrors Limited | Apparatus for separating pre-scribed shapes from a glass sheet |
-
1974
- 1974-04-25 FR FR7414357A patent/FR2268762A1/en not_active Withdrawn
-
1975
- 1975-04-23 SE SE7504709A patent/SE7504709L/en unknown
- 1975-04-24 BE BE155744A patent/BE828353A/en unknown
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0970923A2 (en) * | 1998-07-07 | 2000-01-12 | Donnelly Mirrors Limited | Apparatus for separating pre-scribed shapes from a glass sheet |
EP0970923A3 (en) * | 1998-07-07 | 2000-05-31 | Donnelly Mirrors Limited | Apparatus for separating pre-scribed shapes from a glass sheet |
US6276585B1 (en) | 1998-07-07 | 2001-08-21 | Donnelly Mirrors Limited | Apparatus for separating pre-scribed shapes from a glass sheet |
Also Published As
Publication number | Publication date |
---|---|
SE7504709L (en) | 1975-10-27 |
BE828353A (en) | 1975-10-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |