GB656988A - Improvements in and relating to variable reluctance electro-magnetic induction apparatus - Google Patents

Improvements in and relating to variable reluctance electro-magnetic induction apparatus

Info

Publication number
GB656988A
GB656988A GB1896/49A GB189649A GB656988A GB 656988 A GB656988 A GB 656988A GB 1896/49 A GB1896/49 A GB 1896/49A GB 189649 A GB189649 A GB 189649A GB 656988 A GB656988 A GB 656988A
Authority
GB
United Kingdom
Prior art keywords
joints
core
magnetic
reluctance
halves
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
GB1896/49A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB656988A publication Critical patent/GB656988A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F29/00—Variable transformers or inductances not covered by group H01F21/00
    • H01F29/08—Variable transformers or inductances not covered by group H01F21/00 with core, coil, winding, or shield movable to offset variation of voltage or phase shift, e.g. induction regulators
    • H01F29/10—Variable transformers or inductances not covered by group H01F21/00 with core, coil, winding, or shield movable to offset variation of voltage or phase shift, e.g. induction regulators having movable part of magnetic circuit

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)

Abstract

656,988. Transformers. BRITISH THOMSON-HOUSTON CO., Ltd. Jan. 24, 1949, No. 1896. Convention date, Jan. 23, 1948. [Class 38 (ii)] An adjustable reluctance core for electromagnetic induction apparatus comprises two laminated parts having interfitting multiple tongue and groove joints with non-magnetic wrappers around alternate groups of laminations in each part providing non-magnetic gaps between the sides of the interfitting tongues and grooves in the joints and adjustable means for controlling the degree of closure of the joints. Each half 2, 3 of a magnetic core 1 has alternate groups of L-shaped laminations wrapped in non-magnetic material and the groups oriented to form tongue and groove ends in each half. The halves of the core together with the requisite clamping pieces 9, 10, 11 are then held together by hollow rivets 8, the clamping pieces being crimped to allow assembly and provided with elongated holes 17 to allow the area of contact of the tongues and grooves in the joints to be varied to adjust the core reluctance. The two halves are finally secured together by means of bolts 18, 19. The clamping piece 10 is provided with extensions having holes for mounting the apparatus.
GB1896/49A 1948-01-23 1949-01-24 Improvements in and relating to variable reluctance electro-magnetic induction apparatus Expired GB656988A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US4026A US2460145A (en) 1948-01-23 1948-01-23 Variable reluctance core

Publications (1)

Publication Number Publication Date
GB656988A true GB656988A (en) 1951-09-05

Family

ID=21708767

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1896/49A Expired GB656988A (en) 1948-01-23 1949-01-24 Improvements in and relating to variable reluctance electro-magnetic induction apparatus

Country Status (2)

Country Link
US (1) US2460145A (en)
GB (1) GB656988A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2554782A (en) * 1948-04-27 1951-05-29 Ballastran Corp Transformer and reactor for fluorescent lighting units
US2835876A (en) * 1950-08-18 1958-05-20 Hammond Organ Co Adjustable inductance
US2883590A (en) * 1953-09-02 1959-04-21 Westinghouse Electric Corp Electromagnetic structures
US4032874A (en) * 1975-08-26 1977-06-28 General Electric Company Reactor core
US4172245A (en) * 1977-09-06 1979-10-23 Rte Corporation Adjustable transformer
US6118366A (en) * 1997-12-09 2000-09-12 Siemens Automotive Corporation Electromagnetic actuator with split housing assembly
CN118016411A (en) * 2024-03-08 2024-05-10 贵港市嘉龙海杰电子科技有限公司 High-voltage-resistant sheet transformer

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR709923A (en) * 1931-01-24 1931-08-14 Transformer
BE414228A (en) * 1935-03-10
US2080177A (en) * 1935-04-26 1937-05-11 Union Switch & Signal Co Transformer
US2141554A (en) * 1935-07-30 1938-12-27 Gen Railway Signal Co Adjustable magnetic core structure
US2180759A (en) * 1937-09-23 1939-11-21 Richard F Kneisley Stationary induction apparatus

Also Published As

Publication number Publication date
US2460145A (en) 1949-01-25

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