GB1136536A - Magnetic cores and adjusters therefor - Google Patents

Magnetic cores and adjusters therefor

Info

Publication number
GB1136536A
GB1136536A GB4422467A GB4422467A GB1136536A GB 1136536 A GB1136536 A GB 1136536A GB 4422467 A GB4422467 A GB 4422467A GB 4422467 A GB4422467 A GB 4422467A GB 1136536 A GB1136536 A GB 1136536A
Authority
GB
United Kingdom
Prior art keywords
screw
sleeve
adjuster
bore
slug
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
GB4422467A
Inventor
James Joseph John Mcsweeney
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB4422467A priority Critical patent/GB1136536A/en
Publication of GB1136536A publication Critical patent/GB1136536A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F21/00—Variable inductances or transformers of the signal type
    • H01F21/02—Variable inductances or transformers of the signal type continuously variable, e.g. variometers
    • H01F21/06—Variable inductances or transformers of the signal type continuously variable, e.g. variometers by movement of core or part of core relative to the windings as a whole

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Braking Arrangements (AREA)

Abstract

1,136,536. Transformers and inductors. STANDARD TELEPHONES & CABLES Ltd. 28 Sept., 1967, No. 44224/67. Heading H1T. A screw-threaded adjuster 3 co-operable with a magnetic core structure having a circular section bore for receiving the adjuster, includes a sleeve 13 of electrically insulating non-magnetic material fixedly embracing part of the length of a non-magnetic screw 11, the sleeve having a flange 14 at least at the end thereof adjacent the head of the screw, and a tubular slug 12 of ferromagnetic material coaxial with the screw and fixedly embracing the non-flanged length of the sleeve, the tubular slug having an outer diameter less than the diameter of the bore in the core structure and the sleeve flange having a portion or portions 18 to provide friction braking with the bore of the core structure when inserted therein. The sleeve may be of moulded plastics material, the screw of non-magnetic stainless steel and the slug of ferromagnetic ceramic material. A further flange 15 formed at the end of the sleeve remote from the screw head has a diameter less than that of the slug. The portion or portions 18 are side projections (Figs. 2, 3, not shown). The screw head has a flat 17 to prevent rotation of the screw in the sleeve. In a modification (Figs. 3, 4, not shown) an extension of the sleeve beyond the screw head is provided with a slot (16) for movement of the adjuster. A method of making the adjuster is described. During adjustment of the adjuster the screw moves in a nut 19 secured to the sides of the bore by moulded material 20. The screw has a coefficient of expansion matching that of the core material.
GB4422467A 1967-09-28 1967-09-28 Magnetic cores and adjusters therefor Expired GB1136536A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4422467A GB1136536A (en) 1967-09-28 1967-09-28 Magnetic cores and adjusters therefor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4422467A GB1136536A (en) 1967-09-28 1967-09-28 Magnetic cores and adjusters therefor

Publications (1)

Publication Number Publication Date
GB1136536A true GB1136536A (en) 1968-12-11

Family

ID=10432343

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4422467A Expired GB1136536A (en) 1967-09-28 1967-09-28 Magnetic cores and adjusters therefor

Country Status (1)

Country Link
GB (1) GB1136536A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2233692A1 (en) * 1973-06-18 1975-01-10 Philips Nv
US4023263A (en) * 1973-06-18 1977-05-17 U.S. Philips Corporation Method of making an adjusting pin for a ferro-magnetic core

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2233692A1 (en) * 1973-06-18 1975-01-10 Philips Nv
US3944958A (en) * 1973-06-18 1976-03-16 U.S. Philips Corporation Adjusting pin for a ferro-magnetic core
US4023263A (en) * 1973-06-18 1977-05-17 U.S. Philips Corporation Method of making an adjusting pin for a ferro-magnetic core

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