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GB617199A - Magnetic recording and reproducing - Google Patents

Magnetic recording and reproducing

Info

Publication number
GB617199A
GB617199A GB19304/46A GB1930446A GB617199A GB 617199 A GB617199 A GB 617199A GB 19304/46 A GB19304/46 A GB 19304/46A GB 1930446 A GB1930446 A GB 1930446A GB 617199 A GB617199 A GB 617199A
Authority
GB
United Kingdom
Prior art keywords
transducer
sheet member
drums
tips
engaged
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
GB19304/46A
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.)
Brush Development Co
Original Assignee
Brush Development Co
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 Brush Development Co filed Critical Brush Development Co
Publication of GB617199A publication Critical patent/GB617199A/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
    • 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
    • G11B5/004—Recording on, or reproducing or erasing from, magnetic drums

Landscapes

  • Recording Measured Values (AREA)

Abstract

617,199. Magnetic recording and reproducing apparatus. BRUSH DEVELOPMENT CO. June 27, 1946, No. 19304. Convention date, Aug. 27, 1945. [Class 40 (ii)] A magnetic transducing apparatus comprises a transducer having a magnetic core 2-41 with thin projecting pole-tips 2-44 which are pressed into engagement with a moving record track surface formed on a limp sheet member 31, which may be wide compared with the thickness of the pole-tips 2-44, and formed in an endless band. Traverse of the transducer across the direction of movement of the band may be effected by a lead screw 67 and halfnut 66, Fig. 13 (not shown), or by a groove 38 in the sheet member 31 which is engaged by a stylus 2-56 carried by the transducer as shown in Fig. 12a. Figs. 13 to 20 inclusive (not shown) illustrate alternative constructions of apparatus for guiding the sheet member 31. In one embodiment, Figs. 13, 13a and 14, the sheet member 31 passes over a flanged drum, the transducer being supported by a carriage which may be lifted manually in order to disengage the transducer. In the other embodiment, the transducer is held in a relatively fixed position, and the sheet member 31, which passes over two drums, is engaged and disengaged by the transducer by means which alter the spacing of the drums or by the use of a jockey pulley.
GB19304/46A 1945-08-27 1946-06-27 Magnetic recording and reproducing Expired GB617199A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US617199XA 1945-08-27 1945-08-27

Publications (1)

Publication Number Publication Date
GB617199A true GB617199A (en) 1949-02-02

Family

ID=22037672

Family Applications (1)

Application Number Title Priority Date Filing Date
GB19304/46A Expired GB617199A (en) 1945-08-27 1946-06-27 Magnetic recording and reproducing

Country Status (1)

Country Link
GB (1) GB617199A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2702710A (en) * 1954-01-28 1955-02-22 Leona E Conrad Norton Magnetic belt type of dictating and transcribing machine
DE934730C (en) * 1950-08-22 1955-11-03 Paul Bangert Phonetic carrier for magnetic sound recording
DE938630C (en) * 1952-11-11 1956-02-02 Tefi Appbau Dr Daniel K G Process for the production of endless magnetic sound tapes which are provided with a guide groove and rolled up into a roll
DE1060615B (en) * 1954-09-20 1959-07-02 Paul Bangert Process for the production of pole shoe pairs for the magnetogram process

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE934730C (en) * 1950-08-22 1955-11-03 Paul Bangert Phonetic carrier for magnetic sound recording
DE938630C (en) * 1952-11-11 1956-02-02 Tefi Appbau Dr Daniel K G Process for the production of endless magnetic sound tapes which are provided with a guide groove and rolled up into a roll
US2702710A (en) * 1954-01-28 1955-02-22 Leona E Conrad Norton Magnetic belt type of dictating and transcribing machine
DE1060615B (en) * 1954-09-20 1959-07-02 Paul Bangert Process for the production of pole shoe pairs for the magnetogram process

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