GB253529A - Improvements in or relating to electric-acoustic systems - Google Patents

Improvements in or relating to electric-acoustic systems

Info

Publication number
GB253529A
GB253529A GB14461/26A GB1446126A GB253529A GB 253529 A GB253529 A GB 253529A GB 14461/26 A GB14461/26 A GB 14461/26A GB 1446126 A GB1446126 A GB 1446126A GB 253529 A GB253529 A GB 253529A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
electric
relating
acoustic systems
wireless
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
GB14461/26A
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.)
Marconis Wireless Telegraph Co Ltd
BAE Systems Electronics Ltd
Original Assignee
Marconis Wireless Telegraph Co Ltd
Marconi Co Ltd
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 Marconis Wireless Telegraph Co Ltd, Marconi Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Publication of GB253529A publication Critical patent/GB253529A/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
    • H04R7/00—Diaphragms for electromechanical transducers; Cones

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)

Abstract

253,529. Marconi's Wireless Telegraph Co., Ltd., (Assignees of Minton, J. P.). June 9, 1925, [Convention, date]. Magnetic instrumentsloud-speakers. -A wireless receiver, electric phonograph, or like apparatus is mounted in a casing 2, of which one side 4 serves as a loud-speaking diaphragm. The apparatus A, B, has output terminals 15 connected to the electromagnet 10 which controls a lever 9, the upper end of which is coupled to the diaphragm 4 by a rod 6 clamped to the diaphragm by nuts screwed over the rubber gaskets 5.
GB14461/26A 1925-06-09 1926-06-08 Improvements in or relating to electric-acoustic systems Expired GB253529A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US253529XA 1925-06-09 1925-06-09

Publications (1)

Publication Number Publication Date
GB253529A true GB253529A (en) 1926-10-21

Family

ID=21825514

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14461/26A Expired GB253529A (en) 1925-06-09 1926-06-08 Improvements in or relating to electric-acoustic systems

Country Status (1)

Country Link
GB (1) GB253529A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4547631A (en) * 1982-06-23 1985-10-15 U.S. Philips Corporation Large-excursion electroacoustic transducer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4547631A (en) * 1982-06-23 1985-10-15 U.S. Philips Corporation Large-excursion electroacoustic transducer

Similar Documents

Publication Publication Date Title
GB253529A (en) Improvements in or relating to electric-acoustic systems
GB257271A (en) Telephone with free vibrating diaphragm surface
GB445118A (en) Improvements in or relating to wireless apparatus
GB373916A (en) Improvements relating to earphones
GB217752A (en) Improvements relating to receiving and sound-distributing apparatus of wireless systems
GB222196A (en) Improvements in and relating to telephones
GB396822A (en) Improvements in electric wave signalling apparatus
GB372125A (en) Apparatus for connecting a source of acoustic waves with several listeners for a suitable time
GB272042A (en) Improvements in telephone receivers
GB507712A (en) Improvements in or relating to the remote control of wireless sets
GB276651A (en) Amplifiers for wireless receiving sets
GB254088A (en) Telephone receivers or transmitters
GB255149A (en) Improvements in or relating to loud speaking reproducer
GB248087A (en) A new method of measuring variations in the strength of received wireless signals
GB120376A (en) Improvements in or relating to Electrical Relays.
GB234980A (en) Improvements in or relating to loud speaking telephone receivers
GB255201A (en) Improvements in telephone receivers and like instruments
GB241617A (en) Improvements in wireless telephone transmitting systems
GB206126A (en) Improvements in telephone receivers
GB152190A (en) Improvements in or relating to telegraphic recorders, relays, telephonic receivers or the like
GB254582A (en) Improvements in telephone receivers
GB683599A (en) Improvements in or relating to electric current transforming devices
GB620349A (en) Improvements in receiver units for remote switching by direct current signals over an alternating current supply network
GB258441A (en) Improvements in or relating to the mounting of insulator arms upon telegraph and telephone poles
GB388950A (en) Electric signal bell