GB275395A - Improvements in talking machines - Google Patents

Improvements in talking machines

Info

Publication number
GB275395A
GB275395A GB1728626A GB1728626A GB275395A GB 275395 A GB275395 A GB 275395A GB 1728626 A GB1728626 A GB 1728626A GB 1728626 A GB1728626 A GB 1728626A GB 275395 A GB275395 A GB 275395A
Authority
GB
United Kingdom
Prior art keywords
loud
gramophone
horn
aperture
leading
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
GB1728626A
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.)
Victor Talking Machine Co
Original Assignee
Victor Talking Machine 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 Victor Talking Machine Co filed Critical Victor Talking Machine Co
Priority to GB1728626A priority Critical patent/GB275395A/en
Publication of GB275395A publication Critical patent/GB275395A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K13/00—Cones, diaphragms, or the like, for emitting or receiving sound in general

Abstract

275,395. Gramophone Co., Ltd., (Victor Talking Machine Co.). July 9, 1926. Gramophones modified to constitute telephonic loud-speakers.-Relates to devices whereby the horn of a gramophone may be connected either to the usual tone-arm or to a sound conduit from a loud-speaker unit, by means of a rotary valve in a chamber into which all the conduits converge. According to the invention, the rotary valve body 12 has a single curved passage 24, the axis of which lies in a plane at right angles to the axis of rotation of the valve. The part 12 is enclosed within a casting 9, and may be turned, by means of an external knob and bevel gearing (not shown), so that the passage 24 connects an aperture 20 leading to the small end of the horn 7 either, as shown, with a tube 22 carrying a loud-speaker unit 23, or with an aperture 19 leading from the tone-arm 5.
GB1728626A 1926-07-09 1926-07-09 Improvements in talking machines Expired GB275395A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1728626A GB275395A (en) 1926-07-09 1926-07-09 Improvements in talking machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1728626A GB275395A (en) 1926-07-09 1926-07-09 Improvements in talking machines

Publications (1)

Publication Number Publication Date
GB275395A true GB275395A (en) 1927-08-11

Family

ID=10092529

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1728626A Expired GB275395A (en) 1926-07-09 1926-07-09 Improvements in talking machines

Country Status (1)

Country Link
GB (1) GB275395A (en)

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