GB832426A - Improved magnetic head - Google Patents

Improved magnetic head

Info

Publication number
GB832426A
GB832426A GB30289/57A GB3028957A GB832426A GB 832426 A GB832426 A GB 832426A GB 30289/57 A GB30289/57 A GB 30289/57A GB 3028957 A GB3028957 A GB 3028957A GB 832426 A GB832426 A GB 832426A
Authority
GB
United Kingdom
Prior art keywords
coils
core
link
flux
portions
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
GB30289/57A
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.)
Unisys Corp
Original Assignee
Burroughs Corp
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
Priority claimed from US659779A external-priority patent/US2969529A/en
Application filed by Burroughs Corp filed Critical Burroughs Corp
Publication of GB832426A publication Critical patent/GB832426A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/265—Structure or manufacture of a head with more than one gap for erasing, recording or reproducing on the same track
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/52—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with simultaneous movement of head and record carrier, e.g. rotation of head
    • G11B5/53—Disposition or mounting of heads on rotating support

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Heads (AREA)

Abstract

832,426. Magnetic recording and reproducing heads. BURROUGHS CORPORATION. Sept. 27, 1957 [Oct. 22, 1956; May 17, 1957], No. 30289/57. Class 40 (2). A magnetic head for simultaneous recording and reproducing has a core with a portion common to two separate flux paths each of which has a high reluctance gap, recording and reproducing coils wound on separate portions, each of the portions being associated with one path only, and means for eliminating any net flux linking the coils. In the first embodiment, Fig. 1, the core comprises a U-shaped part 10 carrying a coil 22 and an E-shaped part 14 carrying a coil 24 on the middle limb. The two parts 10, 14 are joined by an intermediate portion 16 to form signal gaps 18, 20 associated respectively with the signal coils 22, 24. The arrangement is in effect a magnetic bridge circuit, Fig. 2 (not shown), which may be roughly balanced by notching the core as indicated at 31, and finally balanced by an adjustable shunt in the form of a screw 26. The arrangement of the coils at right angles to each other reduces the effect of external fields. In an alternative embodiment, Fig. 3, the core has three substantially parallel branch portions, the central branch being divided. Shorting coils 56, 58 associated with coils 50, 52, respectively, are provided which each link one particular portion each of the divided branch portions. Thus two flux paths are provided which do not link either of the shorting coils, but do link the signal coils 50, 52 and there is thus no interaction between changes of flux in the two flux paths. Fig. 4 shows a combination of the arrangements of Figs. 1 and 3.
GB30289/57A 1956-10-22 1957-09-27 Improved magnetic head Expired GB832426A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US832426XA 1956-10-22 1956-10-22
US659779A US2969529A (en) 1957-05-17 1957-05-17 Magnetic read-write head having two gaps

Publications (1)

Publication Number Publication Date
GB832426A true GB832426A (en) 1960-04-13

Family

ID=26769091

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30289/57A Expired GB832426A (en) 1956-10-22 1957-09-27 Improved magnetic head

Country Status (5)

Country Link
CH (1) CH355303A (en)
DE (1) DE1072830B (en)
FR (1) FR1181091A (en)
GB (1) GB832426A (en)
NL (1) NL125946C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4868510U (en) * 1971-11-30 1973-08-31

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3233046A (en) * 1960-11-04 1966-02-01 William D Moehring Magnetic head assembly
US3187111A (en) * 1961-01-23 1965-06-01 Ampex Magnetic recording heads with monitor of recorded signal
JPS59121613A (en) * 1982-12-28 1984-07-13 Toshiba Corp Magnetic head device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2475421A (en) * 1945-05-30 1949-07-05 Armour Res Found Combined erasing and recording magnetic transducer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4868510U (en) * 1971-11-30 1973-08-31

Also Published As

Publication number Publication date
CH355303A (en) 1961-06-30
DE1072830B (en) 1960-01-07
NL125946C (en)
FR1181091A (en) 1959-06-11

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