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 other

Info

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Withdrawn
Application number
FR7414357A
Other languages
French (fr)
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.)
Saint Gobain Industries SA
Compagnie de Saint Gobain SA
Original Assignee
Saint Gobain Industries SA
Compagnie de Saint Gobain SA
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 Saint Gobain Industries SA, Compagnie de Saint Gobain SA filed Critical Saint Gobain Industries SA
Priority to FR7414357A priority Critical patent/FR2268762A1/en
Priority to AR25843675A priority patent/AR205566A1/en
Priority to US05/570,554 priority patent/US4049167A/en
Priority to SE7504709A priority patent/SE7504709L/en
Priority to AU80470/75A priority patent/AU491304B2/en
Priority to BR7503139D priority patent/BR7502470A/en
Priority to CA225,547A priority patent/CA1023653A/en
Priority to GB1684675A priority patent/GB1500316A/en
Priority to IT2266475A priority patent/IT1037521B/en
Priority to DE19752518243 priority patent/DE2518243A1/en
Priority to BE155744A priority patent/BE828353A/en
Publication of FR2268762A1 publication Critical patent/FR2268762A1/en
Withdrawn legal-status Critical Current

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

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.
FR7414357A 1974-04-25 1974-04-25 Cutting thick glass - by scratching one face and hammering on the other Withdrawn FR2268762A1 (en)

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
SE7504709A SE7504709L (en) 1974-04-25 1975-04-23 PROCEDURE AND APPLIANCE FOR CUTTING GLASS DISCS.
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
CA225,547A CA1023653A (en) 1974-04-25 1975-04-23 Cutting of glass
GB1684675A GB1500316A (en) 1974-04-25 1975-04-23 Cutting of glass
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)

* Cited by examiner, † Cited by third party
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

Cited By (3)

* Cited by examiner, † Cited by third party
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