GB1339141A - Methods and apparatus for use in glass cutting - Google Patents

Methods and apparatus for use in glass cutting

Info

Publication number
GB1339141A
GB1339141A GB4021771A GB4021771A GB1339141A GB 1339141 A GB1339141 A GB 1339141A GB 4021771 A GB4021771 A GB 4021771A GB 4021771 A GB4021771 A GB 4021771A GB 1339141 A GB1339141 A GB 1339141A
Authority
GB
United Kingdom
Prior art keywords
cutting
scoring
aug
coils
pair
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
Application number
GB4021771A
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.)
PPG Industries Inc
Original Assignee
PPG Industries Inc
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 PPG Industries Inc filed Critical PPG Industries Inc
Publication of GB1339141A publication Critical patent/GB1339141A/en
Expired 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
    • C03B33/10—Glass-cutting tools, e.g. scoring tools

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

1339141 Cutting or scoring glass PPG INDUSTRIES Inc 27 Aug 1971 [31 Aug 1970 26 March 1971] 40217/71 Heading C1M Apparatus for cutting or scoring glass includes a cutter head which is operatively coupled to a movable member within at least one constant reluctance motor which is in turn coupled to a source of electric current. As shown, a cutter head assembly 50 for cutting or scoring sheet glass is attached to a block 40 which is mounted on shaft 30. The shaft 30 is rigidly coupled to the rotors of a pair of direct current torque motors 10. Each motor includes a permanent magnet rotor 20 surrounded by an annular stator coil 16 having a pair of coils 12, 14 wound therearound. Electric current may be supplied to the coils 12, 14 via variable resistance R V1 by closing switches S 2 , S 3 thereby lowering the cutting head, or via variable resistance R V2 by closing switches S 1 , S 4 thereby raising the cutting head. A cutting wheel is disclosed of a material such as tungsten carbide with a diameter of ¢ inch and a cutting angle of 160 degrees or less. A method of automatically cutting a windshield blank or the like is disclosed which makes use of a function generator to supply variable signals to the constant reluctance motor (Figs. 7, 8 and 9, not shown).
GB4021771A 1970-08-31 1971-08-27 Methods and apparatus for use in glass cutting Expired GB1339141A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US6830570A 1970-08-31 1970-08-31
US12838471A 1971-03-26 1971-03-26

Publications (1)

Publication Number Publication Date
GB1339141A true GB1339141A (en) 1973-11-28

Family

ID=26748827

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4021771A Expired GB1339141A (en) 1970-08-31 1971-08-27 Methods and apparatus for use in glass cutting

Country Status (5)

Country Link
BE (1) BE771930A (en)
CA (1) CA955219A (en)
DE (2) DE7132752U (en)
FR (1) FR2103627B1 (en)
GB (1) GB1339141A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008140678A1 (en) * 2007-05-09 2008-11-20 Corning Incorporated Constant force scoring device and method for using same

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1505389A (en) * 1975-12-05 1978-03-30 Pilkington Brothers Ltd Apparatus for cutting or scoring sheet material
US4098155A (en) * 1976-09-17 1978-07-04 The Fletcher-Terry Company Self-compensating scoring head

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008140678A1 (en) * 2007-05-09 2008-11-20 Corning Incorporated Constant force scoring device and method for using same
US8051681B2 (en) 2007-05-09 2011-11-08 Corning Incorporated Constant force scoring device and method for using same
US8146386B2 (en) 2007-05-09 2012-04-03 Corning Incorporated Constant force scoring device and method for using same

Also Published As

Publication number Publication date
DE2142932B2 (en) 1973-10-04
FR2103627A1 (en) 1972-04-14
FR2103627B1 (en) 1976-09-03
CA955219A (en) 1974-09-24
DE2142932A1 (en) 1972-03-09
BE771930A (en) 1972-02-29
DE7132752U (en) 1975-04-10
DE2142932C3 (en) 1974-05-16

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees