GB1224980A - A method and apparatus for splitting coil yokes and the like - Google Patents

A method and apparatus for splitting coil yokes and the like

Info

Publication number
GB1224980A
GB1224980A GB59527/69A GB5952769A GB1224980A GB 1224980 A GB1224980 A GB 1224980A GB 59527/69 A GB59527/69 A GB 59527/69A GB 5952769 A GB5952769 A GB 5952769A GB 1224980 A GB1224980 A GB 1224980A
Authority
GB
United Kingdom
Prior art keywords
yoke
jaw
force
cylinder
splitting
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
GB59527/69A
Inventor
Francis John Witts
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.)
Philips Components Ltd
Original Assignee
Mullard Ltd
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 Mullard Ltd filed Critical Mullard Ltd
Priority to GB59527/69A priority Critical patent/GB1224980A/en
Publication of GB1224980A publication Critical patent/GB1224980A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/236—Manufacture of magnetic deflecting devices for cathode-ray tubes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0206—Manufacturing of magnetic cores by mechanical means
    • H01F41/0246—Manufacturing of magnetic circuits by moulding or by pressing powder
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H01F41/06—Coil winding
    • H01F41/071—Winding coils of special form
    • H01F2041/0711—Winding saddle or deflection coils
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2209/00—Apparatus and processes for manufacture of discharge tubes
    • H01J2209/236—Manufacture of magnetic deflecting devices
    • H01J2209/2363—Coils
    • H01J2209/2366—Machines therefor, e.g. winding, forming, welding, or the like

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Power Engineering (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

1,224,980. Splitting coil yokes. MULLARD Ltd. 5 Dec., 1969, No. 59527/69. Heading B5E. A method of splitting a coil yoke 4 such as a C.R.T. deflection coil yoke, comprises locating the yoke between a pair of supporting jaws 2, 3, applying an increasing mechanical force to one jaw, measuring the force applied to the yoke during the application, detecting a sudden change in said measurement as indicative of cracking of the yoke, and removing the force upon detection of the change. The yoke may be provided with grooves 5 to weaken the yoke where it is to be cracked and a rib 6 on a support 1 for the jaws locates in a groove in the yoke to position the yoke. The jaw 3 is biased outwards by a spring 7 and engages a piezo-electric transducer 8 mounted between steel blocks 9 and having an output lead 11. The jaw 2 is connected by a lever 12 to a pneumatic cylinder 14 in a pneumatic circuit which supplies pressure to the cylinder to actuate the jaw 2 to apply an increasing force to the yoke. When the yoke cracks, the change in pressure is detected by the transducer which actuates a valve to cause the cylinder to retract the jaw 2.
GB59527/69A 1969-12-05 1969-12-05 A method and apparatus for splitting coil yokes and the like Expired GB1224980A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB59527/69A GB1224980A (en) 1969-12-05 1969-12-05 A method and apparatus for splitting coil yokes and the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB59527/69A GB1224980A (en) 1969-12-05 1969-12-05 A method and apparatus for splitting coil yokes and the like

Publications (1)

Publication Number Publication Date
GB1224980A true GB1224980A (en) 1971-03-10

Family

ID=10483926

Family Applications (1)

Application Number Title Priority Date Filing Date
GB59527/69A Expired GB1224980A (en) 1969-12-05 1969-12-05 A method and apparatus for splitting coil yokes and the like

Country Status (1)

Country Link
GB (1) GB1224980A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0256578A1 (en) * 1986-08-06 1988-02-24 Koninklijke Philips Electronics N.V. Method of severing an annular core of a ferromagnetic material for a deflection unit and deflection unit for a television tube comprising an annular core severed according to such a method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0256578A1 (en) * 1986-08-06 1988-02-24 Koninklijke Philips Electronics N.V. Method of severing an annular core of a ferromagnetic material for a deflection unit and deflection unit for a television tube comprising an annular core severed according to such a method

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