GB660180A - Improvements in and relating to dictating machines - Google Patents

Improvements in and relating to dictating machines

Info

Publication number
GB660180A
GB660180A GB17949/49A GB1794949A GB660180A GB 660180 A GB660180 A GB 660180A GB 17949/49 A GB17949/49 A GB 17949/49A GB 1794949 A GB1794949 A GB 1794949A GB 660180 A GB660180 A GB 660180A
Authority
GB
United Kingdom
Prior art keywords
cylinder
july
relating
sheet
record sheet
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
GB17949/49A
Inventor
Marcel Meunier
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.)
ACEC
Umicore NV SA
Original Assignee
ACEC
Ateliers de Constructions Electriques de Charleroi SA
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 ACEC, Ateliers de Constructions Electriques de Charleroi SA filed Critical ACEC
Publication of GB660180A publication Critical patent/GB660180A/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
    • G11B21/00—Head arrangements not specific to the method of recording or reproducing
    • G11B21/02—Driving or moving of heads
    • 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

  • Magnetic Record Carriers (AREA)

Abstract

660,180. Magnetic recording devices. ATELIERS DE CONSTRUCTIONS ELECTRIQUES DE CRARLEROI. July 7, 1949. [July 22, 1948] No. 17949/49. Class 40 (ii). A dictating machine includes a cylinder 2 having a longitudinal groove 32 in which a transverse fold of a magnetic record sheet 3 is secured, the sheet being then wound around the cylinder and the latter is then rotated and relative motion is set up along the axis of rotation between the cylinder and a recording, reproducing and erasing head 1 to cause the latter to describe a helical line covering the entire surface of the record sheet. In the example shown the head 1 is moved by mounting it on a rotating screw 13.
GB17949/49A 1948-07-22 1949-07-07 Improvements in and relating to dictating machines Expired GB660180A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1010022T 1948-07-22

Publications (1)

Publication Number Publication Date
GB660180A true GB660180A (en) 1951-10-31

Family

ID=9568682

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17949/49A Expired GB660180A (en) 1948-07-22 1949-07-07 Improvements in and relating to dictating machines

Country Status (3)

Country Link
CA (1) CA565624A (en)
FR (1) FR1010022A (en)
GB (1) GB660180A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5117860Y1 (en) * 1972-05-02 1976-05-13

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5117860Y1 (en) * 1972-05-02 1976-05-13

Also Published As

Publication number Publication date
FR1010022A (en) 1952-06-06
CA565624A (en) 1958-11-04

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