GB707637A - Improvements in magnetic recording or reproducing devices particularly for digital computing machines - Google Patents

Improvements in magnetic recording or reproducing devices particularly for digital computing machines

Info

Publication number
GB707637A
GB707637A GB29381/49A GB2938149A GB707637A GB 707637 A GB707637 A GB 707637A GB 29381/49 A GB29381/49 A GB 29381/49A GB 2938149 A GB2938149 A GB 2938149A GB 707637 A GB707637 A GB 707637A
Authority
GB
United Kingdom
Prior art keywords
teeth
sheets
drum
head
magnetic
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
GB29381/49A
Other languages
English (en)
Inventor
Frederic Calland Williams
Tom Kilburn
Gordon Eric Thomas
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.)
NAT RES DEV
National Research Development Corp UK
Original Assignee
NAT RES DEV
National Research Development Corp UK
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 NAT RES DEV, National Research Development Corp UK filed Critical NAT RES DEV
Publication of GB707637A publication Critical patent/GB707637A/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
    • G11B5/2651—Manufacture
    • 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
    • G11B5/29—Structure or manufacture of unitary devices formed of plural heads for more than one track

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Heads (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
GB29381/49A 1949-11-16 1949-11-16 Improvements in magnetic recording or reproducing devices particularly for digital computing machines Expired GB707637A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB291249X 1949-11-16

Publications (1)

Publication Number Publication Date
GB707637A true GB707637A (en) 1954-04-21

Family

ID=10286547

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29381/49A Expired GB707637A (en) 1949-11-16 1949-11-16 Improvements in magnetic recording or reproducing devices particularly for digital computing machines

Country Status (6)

Country Link
US (1) US2700588A (en, 2012)
BE (1) BE499360A (en, 2012)
CH (1) CH291249A (en, 2012)
FR (1) FR1028968A (en, 2012)
GB (1) GB707637A (en, 2012)
NL (2) NL85238C (en, 2012)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4625250A (en) * 1982-01-07 1986-11-25 Victor Company Of Japan, Limited Multi-track magnetic head

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3008793A (en) * 1961-11-14 Variable coupling electromagnetic
US3201769A (en) * 1951-05-04 1965-08-17 Sperry Rand Corp Information storage device
US2767254A (en) * 1951-09-28 1956-10-16 Rca Corp Magnetic recording
US2785038A (en) * 1952-06-02 1957-03-12 Rca Corp Magnetic transducer
US2848556A (en) * 1954-08-02 1958-08-19 Rca Corp Magnetic recording transducer
US3063052A (en) * 1955-03-14 1962-11-06 Ralph B Atkinson Ferographic recording head
US2905521A (en) * 1955-06-21 1959-09-22 Standard Coil Prod Co Inc Digital recording system
US2987582A (en) * 1955-08-12 1961-06-06 Sperry Rand Corp Multichannel magnetic erasing heads
US3011031A (en) * 1955-10-12 1961-11-28 Loewe Arrangement of magnetic heads for tape recorders
US2922231A (en) * 1956-04-26 1960-01-26 Ibm Magnetic transducer
US2998292A (en) * 1956-10-05 1961-08-29 Curtiss Wright Corp Mounting of multi-channel magnetic transducer heads
US3007146A (en) * 1957-01-15 1961-10-31 Thompson Ramo Wooldridge Inc Magnetic head locking device for a magnetic drum
US3001181A (en) * 1957-09-16 1961-09-19 Ex Cell O Corp Means and method for setting and locking magnetic transducer heads in a magnetic drum device
US2965886A (en) * 1958-09-29 1960-12-20 Ex Cell O Corp Device for setting and locking magnetic transducer heads associated with a magnetic data storage device
US3104381A (en) * 1958-11-05 1963-09-17 Burroughs Corp Magnetic record transducer
US3058200A (en) * 1959-01-15 1962-10-16 Philips Corp Method of orienting in coplanar arrangement the gaps of a plurality of magnetic heads
US3382325A (en) * 1959-08-20 1968-05-07 Iit Res Inst Magnetic transducer system
NL112519C (en, 2012) * 1959-09-05
US3239914A (en) * 1959-11-13 1966-03-15 Sony Corp Method of making magnetic heads
US3247483A (en) * 1963-03-26 1966-04-19 Ibm Character recognition system employing a plurality of spaced serial transducers
US3383667A (en) * 1965-01-04 1968-05-14 Sperry Rand Corp Magnetic head spacing apparatus

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2026329A (en) * 1928-05-30 1935-12-31 Beading machine
US2424633A (en) * 1944-05-19 1947-07-29 Interval Instr Inc Acoustic reservoir for use in a magnetic sound recording and reproducing system
US2649506A (en) * 1948-01-16 1953-08-18 Int Standard Electric Corp Negative feedback applied to magnetic recording
US2540654A (en) * 1948-03-25 1951-02-06 Engineering Res Associates Inc Data storage system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4625250A (en) * 1982-01-07 1986-11-25 Victor Company Of Japan, Limited Multi-track magnetic head

Also Published As

Publication number Publication date
NL85238C (en, 2012)
US2700588A (en) 1955-01-25
BE499360A (en, 2012)
CH291249A (fr) 1953-06-15
FR1028968A (fr) 1953-05-29
NL157302B (nl)

Similar Documents

Publication Publication Date Title
GB707637A (en) Improvements in magnetic recording or reproducing devices particularly for digital computing machines
US2835743A (en) Magnetic transducer assembly
US2535712A (en) Multiple gap erase head for magnetic recording
IT1003844B (it) Apparecchiatura di registrazione e di riproduzione a nastro magnetico
US2658114A (en) Magnetic recording-reproducing device
GB1525007A (en) Multi-element magnetic head
US2647167A (en) Magnetic transducer construction
US2931963A (en) Linear induction motor servosystem for recording oscillograph
US3060279A (en) Magnetic transducing heads
US2615990A (en) Magnetic recording and reproduction
US2536810A (en) Method and apparatus for improving the low-frequency response in magnetic recording and reproducing units
US3308449A (en) Multi-gap magnetic head
GB882779A (en) Improvements in or relating to multi-track magnetic heads
GB1171429A (en) A Method of Duplicating a Magnetic Tape
IT1018869B (it) Apparecchio di registrazione e op pure riproduzione a nastro magne tico
US2998292A (en) Mounting of multi-channel magnetic transducer heads
US2854525A (en) Magnetic transducer
US2747024A (en) Magnetic erase heads
GB803624A (en) Improvements in or relating to magnetic recording or reproducing apparatus
GB879600A (en) Multiple track magnetic recording head
US3221314A (en) Multiple channel magnetic transducer
US2889414A (en) Combination recording heads
US3319241A (en) Electromechanical data transmission
US2825859A (en) Positioning mechanism of the servo type
US3683127A (en) Multi-channel semiconductor magnetic head