GB819349A - Improvements in or relating to magnetic recording and/or reproducing apparatus - Google Patents

Improvements in or relating to magnetic recording and/or reproducing apparatus

Info

Publication number
GB819349A
GB819349A GB1863455A GB1863455A GB819349A GB 819349 A GB819349 A GB 819349A GB 1863455 A GB1863455 A GB 1863455A GB 1863455 A GB1863455 A GB 1863455A GB 819349 A GB819349 A GB 819349A
Authority
GB
United Kingdom
Prior art keywords
head
magnetic
yoke
rod
block
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
GB1863455A
Inventor
Arthur James Spencer
Herbert Gustav Karl Schotten
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.)
International Computers and Tabulators Ltd
Original Assignee
International Computers and Tabulators 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 International Computers and Tabulators Ltd filed Critical International Computers and Tabulators Ltd
Priority to GB1863455A priority Critical patent/GB819349A/en
Publication of GB819349A publication Critical patent/GB819349A/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
    • G11B5/187—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features
    • G11B5/255—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features comprising means for protection against wear
    • 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

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)

Abstract

819,349. Magnetic recording &c. apparatus. INTERNATIONAL COMPUTERS & TABULATORS Ltd., June 21, 1956 [June 28, 1955] No. 18634/55. Class 40 (2). Magnetic recording and/or reproducing apparatus comprises at least one magnetic recording and/or reproducing head 1 movable towards and away from the surface of a magnetic record member 3 with which the head co-operates, spring means 6 arranged to urge the head towards the member, and a head supporting member 2 provided with at least one bearing surface of a wear-resistant solid material, such as polytetrafluoroethylene, with a low coefficient of friction, which surface is pressed against the record member by the spring means, whereby the head is supported in close proximity to, but out of contact with, the surface of the record member. As shown in Fig. 1, the head 1 is secured in the yoke member 2, the vertical legs of which terminate in shoes 4, 5 provided with a layer of polytetrafluoroethylene, bonded to a metallic backing, which engages the recording member 3 of a magnetic drum; the spring 6 is within a sleeve 7 surrounding the yoke and carried by a rigid arm 8 secured to a fixed part of the apparatus. A group of heads 1, Fig. 2, are supported side by side between the legs 10 of a, yoke 9 pressed by springs 12 on to the member 3, the legs being secured to a member 16 fastened to a block 17 pivotally connected by a pin 18 to a block 19; the latter is pivotally mounted on a rod 20 so that the yoke 9, which pivots about the pin 18, can be lifted off the surface 3 and against the pressure of the springs. The spaces between the block 19 and the end plates 14 may be occupied by sleeves surrounding the rod 20 and interposed washers so that adjustment of the heads 1 relative to predetermined tracks on the surface 3 can be obtained; alternatively, the block and the rod 20 have cooperating screw threads so that accurate adjustment of the head support is obtained by rotation of the rod. According to the Provisional Specification, the recording medium is coated with a sintered magnetic or non-magnetic material to which polytetrafluoroethylene is added.
GB1863455A 1955-06-28 1955-06-28 Improvements in or relating to magnetic recording and/or reproducing apparatus Expired GB819349A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1863455A GB819349A (en) 1955-06-28 1955-06-28 Improvements in or relating to magnetic recording and/or reproducing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1863455A GB819349A (en) 1955-06-28 1955-06-28 Improvements in or relating to magnetic recording and/or reproducing apparatus

Publications (1)

Publication Number Publication Date
GB819349A true GB819349A (en) 1959-09-02

Family

ID=10115815

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1863455A Expired GB819349A (en) 1955-06-28 1955-06-28 Improvements in or relating to magnetic recording and/or reproducing apparatus

Country Status (1)

Country Link
GB (1) GB819349A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3479491A (en) * 1964-11-18 1969-11-18 Bendix Corp Electrostatic reader head
FR2522857A1 (en) * 1982-03-03 1983-09-09 Cii Honeywell Bull Low-friction non-impact magnetic printer - uses magnetic drum to support magnetic data carrier, and electromagnet heads facing drum to write data
GB2151835A (en) * 1983-12-22 1985-07-24 Alps Electric Co Ltd Magnetic head device
FR2616948A1 (en) * 1987-06-16 1988-12-23 Cga Hbs Magnetic head for magnetic track
EP1310674A2 (en) * 2001-11-07 2003-05-14 Kabushiki Kaisha Toyota Jidoshokki Coating for swash plate compressor

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3479491A (en) * 1964-11-18 1969-11-18 Bendix Corp Electrostatic reader head
FR2522857A1 (en) * 1982-03-03 1983-09-09 Cii Honeywell Bull Low-friction non-impact magnetic printer - uses magnetic drum to support magnetic data carrier, and electromagnet heads facing drum to write data
GB2151835A (en) * 1983-12-22 1985-07-24 Alps Electric Co Ltd Magnetic head device
FR2616948A1 (en) * 1987-06-16 1988-12-23 Cga Hbs Magnetic head for magnetic track
EP1310674A2 (en) * 2001-11-07 2003-05-14 Kabushiki Kaisha Toyota Jidoshokki Coating for swash plate compressor
EP1310674A3 (en) * 2001-11-07 2005-06-29 Kabushiki Kaisha Toyota Jidoshokki Coating for swash plate compressor

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