GB211826A - Improvements in or relating to sound-reproducing devices, applicable also for recording telegraphic signals - Google Patents

Improvements in or relating to sound-reproducing devices, applicable also for recording telegraphic signals

Info

Publication number
GB211826A
GB211826A GB20499/23A GB2049923A GB211826A GB 211826 A GB211826 A GB 211826A GB 20499/23 A GB20499/23 A GB 20499/23A GB 2049923 A GB2049923 A GB 2049923A GB 211826 A GB211826 A GB 211826A
Authority
GB
United Kingdom
Prior art keywords
armature
relating
sound
applicable
reproducing devices
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
GB20499/23A
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.)
STAMOULIS CALAMATIANOS
Original Assignee
STAMOULIS CALAMATIANOS
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 STAMOULIS CALAMATIANOS filed Critical STAMOULIS CALAMATIANOS
Publication of GB211826A publication Critical patent/GB211826A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R11/00—Transducers of moving-armature or moving-core type
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R11/00—Transducers of moving-armature or moving-core type
    • H04R11/02—Loudspeakers

Abstract

211,826. Calamatianos, S. Feb. 26, 1923, [Convention date]. Magnebic instruments. - An electromagnetic sound producing device, consists of a cylindrical casing 1 of non-magnetic material, such as brass with a permanent magnet 2 of horse-shoe form fixed to the bottom of the casing. a soft iron rod 5 round which is a coil 6, secured to the magnet, an armature 4 of soft iron pivoted on a non-magnetic support 3 attached to one pole of the magnet 2, and a wire 8 passing through a hole in the rod 5 and communicating the vibrations of the armature 4 to a diaphragm 7. The armature 4 may be pivoted at its middle point.
GB20499/23A 1923-02-26 1923-08-11 Improvements in or relating to sound-reproducing devices, applicable also for recording telegraphic signals Expired GB211826A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE211826X 1923-02-26

Publications (1)

Publication Number Publication Date
GB211826A true GB211826A (en) 1924-07-17

Family

ID=3865950

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20499/23A Expired GB211826A (en) 1923-02-26 1923-08-11 Improvements in or relating to sound-reproducing devices, applicable also for recording telegraphic signals

Country Status (1)

Country Link
GB (1) GB211826A (en)

Similar Documents

Publication Publication Date Title
GB241277A (en) Improvements relating to diaphragms for acoustic instruments
GB211826A (en) Improvements in or relating to sound-reproducing devices, applicable also for recording telegraphic signals
GB588178A (en) Improvements in or connected with electro-magnetic pick-up devices for use with stringed musical instruments
GB334551A (en) Improvements relating to electro-magnetic gramophone pick-ups or recorders
US1738653A (en) Telephone receiver
GB261698A (en) Improvements in sound reproducing apparatus
GB626782A (en) Improvements in or relating to phonograph pickups
US1747829A (en) Electrical reproducer
US1823603A (en) Sound reproducing apparatus
GB224304A (en) Improvements in or relating to sound-reproducing devices
GB313406A (en) Method and apparatus for the electromagnetic reproduction of sound
GB260286A (en) Improvements in electro-magnetic units for operating the diaphragm of sound reproducing devices
GB286719A (en) Improvements relating to electro-magnetic sound recorders and reproducers
GB325067A (en) Improvements in or relating to electro-magnetic vibratory devices for use for example in the recording or reproduction of sound
GB355227A (en) Improvements relating to the mounting of vibrating reeds, more particularly for use in connection with electromagnetic gramophone pick-ups, loud speakers and the like
GB204023A (en) Improvements in and relating to loud-speaking apparatus
GB276708A (en) Improvements in sound recorders and reproducers
GB227560A (en) Improvements in telephone receivers and the like
GB253487A (en) Electrical sound reproducing instrument
GB214787A (en) Improvements in or relating to telephone receivers
GB340219A (en) Improvements in electromagnetic devices for reproducing or recording sound
GB779476A (en) Improvements in or relating to sound reproducing devices and the manufacture thereof
GB338541A (en) Improvements in or relating to apparatus for reproducing sound electrically from sound records
GB263484A (en) Loud speaker
GB282383A (en) Sound recorder