GB792729A - Improvements in and relating to computer storage systems - Google Patents

Improvements in and relating to computer storage systems

Info

Publication number
GB792729A
GB792729A GB1802655A GB1802655A GB792729A GB 792729 A GB792729 A GB 792729A GB 1802655 A GB1802655 A GB 1802655A GB 1802655 A GB1802655 A GB 1802655A GB 792729 A GB792729 A GB 792729A
Authority
GB
United Kingdom
Prior art keywords
head unit
drum
axis
nose
mounting
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
GB1802655A
Inventor
Eric William Jacobs
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.)
English Electric Co Ltd
Original Assignee
English Electric 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 English Electric Co Ltd filed Critical English Electric Co Ltd
Priority to GB1802655A priority Critical patent/GB792729A/en
Publication of GB792729A publication Critical patent/GB792729A/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
    • G11B5/48—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
    • 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
    • G11B5/58—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 provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following

Landscapes

  • Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)

Abstract

792,729. Electric digital-data-storage apparatus. ENGLISH ELECTRIC CO., Ltd. June 22, 1956 [June 22, 1955], No. 18026/55. Class 106 (1). [Also in Group XXXVIII] A data storage system comprising a rotating magnetic storage drum and a reading and/or recording head unit has an adjustment device to determine the relative position of the head unit and the drum and means therein to compensate for thermal expansion and so maintain the reading and/or recording heads at a constant distance from the drum surface. The arrangement is applicable to the head unit described in Specification 790,230, [Group XXXVIII]. A magretic drum 10, Fig. 1, having a vertical axis O, has a reading and/or recording head unit 11 of which N represents a nose, in association therewith. A member 12 of part-cylindrical form rotatable about a vertical axis R carries a part-cylindrical mounting 13 for the head unit 11, the mounting 13 being rotatable about a vertical axis Q in the member 12. Coarse adjustment of the head unit 11 is obtained by rotation of the member 12 about the axis R and, by means of the vernier screw arrangement 14, of the mounting 13 about the axis Q. A fine adjustment of the position of the nose N may then be made by rotation of the head unit 11 about its vertical axis P. To compensate for the reduction in the distance between the nose N and the drum surface due to temperature increase, a spacer 20, Fig. 2, of a material having a high coefficient of expansion is inserted between the threaded sleeve 21 and the casing 22 of the screw arrangement 14. The dimensions are so arranged that when the temperature rises the spacer 20 expands to such an extent as to rotate the mounting 13 about the axis Q by an amount sufficient to maintain the distance between the nose N and the drum surface effectively constant. A modification for a drum having a horizontal axis is described (Fig. 3, not shown).
GB1802655A 1955-06-22 1955-06-22 Improvements in and relating to computer storage systems Expired GB792729A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1802655A GB792729A (en) 1955-06-22 1955-06-22 Improvements in and relating to computer storage systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1802655A GB792729A (en) 1955-06-22 1955-06-22 Improvements in and relating to computer storage systems

Publications (1)

Publication Number Publication Date
GB792729A true GB792729A (en) 1958-04-02

Family

ID=10105360

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1802655A Expired GB792729A (en) 1955-06-22 1955-06-22 Improvements in and relating to computer storage systems

Country Status (1)

Country Link
GB (1) GB792729A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0055568A1 (en) * 1980-12-23 1982-07-07 Rodime PLC Read-write head thermal compensation system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0055568A1 (en) * 1980-12-23 1982-07-07 Rodime PLC Read-write head thermal compensation system

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