GB298276A - Improvements in or relating to apparatus for the electrical transmission of sound from gramophone records - Google Patents

Improvements in or relating to apparatus for the electrical transmission of sound from gramophone records

Info

Publication number
GB298276A
GB298276A GB2141228A GB2141228A GB298276A GB 298276 A GB298276 A GB 298276A GB 2141228 A GB2141228 A GB 2141228A GB 2141228 A GB2141228 A GB 2141228A GB 298276 A GB298276 A GB 298276A
Authority
GB
United Kingdom
Prior art keywords
turntable
contacts
sound
circuit
relating
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
GB2141228A
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.)
LAURENCE HERBERT PEARSON
Original Assignee
LAURENCE HERBERT PEARSON
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 LAURENCE HERBERT PEARSON filed Critical LAURENCE HERBERT PEARSON
Priority to GB2141228A priority Critical patent/GB298276A/en
Publication of GB298276A publication Critical patent/GB298276A/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
    • G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
    • G11B17/02—Details

Landscapes

  • Telephone Set Structure (AREA)

Abstract

298,276. Pearson, L. H. April 7, 1927. Divided on 298,249. Preventing reproduction from pickup when record speed is too low.-In reproduction from records by an electrical pick-up, a governor control driven from the turntable drive operates automatically to prevent transmission during speeding up and slowing down of the drive. As shown, a governor GS driven from the spindle of the turntable G maintains contacts C C' in the circuit of the pick-up P closed only when the turntable is running at a suitable speed. In a modification, the contacts C C' are normally closed and connected in a circuit shorting a transformer in the output circuit so that no sound current passes until the contacts are separated by the governors. Specification 293,483, [Class 4.0 (iv), Telephones &c.], is referred to.
GB2141228A 1927-04-07 1927-04-07 Improvements in or relating to apparatus for the electrical transmission of sound from gramophone records Expired GB298276A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2141228A GB298276A (en) 1927-04-07 1927-04-07 Improvements in or relating to apparatus for the electrical transmission of sound from gramophone records

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2141228A GB298276A (en) 1927-04-07 1927-04-07 Improvements in or relating to apparatus for the electrical transmission of sound from gramophone records

Publications (1)

Publication Number Publication Date
GB298276A true GB298276A (en) 1928-10-08

Family

ID=10162493

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2141228A Expired GB298276A (en) 1927-04-07 1927-04-07 Improvements in or relating to apparatus for the electrical transmission of sound from gramophone records

Country Status (1)

Country Link
GB (1) GB298276A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2559902A (en) * 1946-09-27 1951-07-10 Scott Hermon Hosmer Bias blocking means to cut off amplifier during record changing operation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2559902A (en) * 1946-09-27 1951-07-10 Scott Hermon Hosmer Bias blocking means to cut off amplifier during record changing operation

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