GB452818A - Improvements in dictation machines - Google Patents

Improvements in dictation machines

Info

Publication number
GB452818A
GB452818A GB24295/35A GB2429535A GB452818A GB 452818 A GB452818 A GB 452818A GB 24295/35 A GB24295/35 A GB 24295/35A GB 2429535 A GB2429535 A GB 2429535A GB 452818 A GB452818 A GB 452818A
Authority
GB
United Kingdom
Prior art keywords
microphone
ribbon
recording
box
sound
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
GB24295/35A
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.)
DIKTIERMASCHINEN PATENTVERWERT
Original Assignee
DIKTIERMASCHINEN PATENTVERWERT
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 DIKTIERMASCHINEN PATENTVERWERT filed Critical DIKTIERMASCHINEN PATENTVERWERT
Publication of GB452818A publication Critical patent/GB452818A/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
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/70—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function the record carrier being an endless loop record carrier
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B25/00—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus

Landscapes

  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

452,818. Sound recording and reproducing machines. DIKTIERMASCHINENPATENTVERWERTUNGSGES., 46, Schottenfeldgasse, Vienna. Aug. 30, 1935, No. 24295. Convention date, Dec. 5, 1934. Drawings to Specification. [Class 40 (ii)] A phonographic dictation machine, in which a record carrier in the form of a ribbon is used, and in which recording and reproduction are effected, with amplification, by means of a microphone and an electric sound-box, is characterized by the provision of the following features in combination: (1) a single amplifier serves both for recording and reproducing ; (2) the ribbon record carrier has a thickness of not more than 0À2 mm., and is preferably a gelatine foil; (3) the ribbon is endless, and its slack portion is coiled on a bobbin, the sound groove being formed as a helical line. All the parts of the apparatus, except the microphone, are built into a portable box or casing, and the microphone can be stored in the casing when not in use. The loud-speaker may be housed in the lid of the box. The mechanical features of the machine described and shown are the same as those described in Specification 428,404. Specifications 412,698, and 415,752, [Group XXXIX], also are referred to. Reference has been directed by the Comptroller to Specifications 412,698 and 428,404.
GB24295/35A 1934-12-05 1935-08-30 Improvements in dictation machines Expired GB452818A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE452818X 1934-12-05

Publications (1)

Publication Number Publication Date
GB452818A true GB452818A (en) 1936-08-31

Family

ID=6538708

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24295/35A Expired GB452818A (en) 1934-12-05 1935-08-30 Improvements in dictation machines

Country Status (1)

Country Link
GB (1) GB452818A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1020805B (en) * 1953-08-19 1957-12-12 Daniel Tefi Apparatebau Cassette for endless, tape-shaped sound carriers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1020805B (en) * 1953-08-19 1957-12-12 Daniel Tefi Apparatebau Cassette for endless, tape-shaped sound carriers

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