GB311835A - Improvements relating to sound reproducing apparatus - Google Patents

Improvements relating to sound reproducing apparatus

Info

Publication number
GB311835A
GB311835A GB134428A GB134428A GB311835A GB 311835 A GB311835 A GB 311835A GB 134428 A GB134428 A GB 134428A GB 134428 A GB134428 A GB 134428A GB 311835 A GB311835 A GB 311835A
Authority
GB
United Kingdom
Prior art keywords
reproducing apparatus
improvements relating
sound reproducing
balbi
gramophone
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
GB134428A
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.)
CHARLES MACKENZIE RAPHAEL BALB
Original Assignee
CHARLES MACKENZIE RAPHAEL BALB
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 CHARLES MACKENZIE RAPHAEL BALB filed Critical CHARLES MACKENZIE RAPHAEL BALB
Priority to GB134428A priority Critical patent/GB311835A/en
Publication of GB311835A publication Critical patent/GB311835A/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
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/02—Mechanical acoustic impedances; Impedance matching, e.g. by horns; Acoustic resonators
    • G10K11/025—Mechanical acoustic impedances; Impedance matching, e.g. by horns; Acoustic resonators horns for impedance matching

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Flexible Shafts (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Feeding And Watering For Cattle Raising And Animal Husbandry (AREA)

Abstract

311,835. Balbi, C. M. R. Jan. 23, 1929. Metal tubes. - A flexible tube for conveying sound from a gramophone &c. diaphragm to the ear is tapered, preferably exponentially, and is formed of metal rings with overlapping joints as shown, the whole being covered with rubber.
GB134428A 1929-01-23 1929-01-23 Improvements relating to sound reproducing apparatus Expired GB311835A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB134428A GB311835A (en) 1929-01-23 1929-01-23 Improvements relating to sound reproducing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB134428A GB311835A (en) 1929-01-23 1929-01-23 Improvements relating to sound reproducing apparatus

Publications (1)

Publication Number Publication Date
GB311835A true GB311835A (en) 1929-05-23

Family

ID=9720358

Family Applications (1)

Application Number Title Priority Date Filing Date
GB134428A Expired GB311835A (en) 1929-01-23 1929-01-23 Improvements relating to sound reproducing apparatus

Country Status (1)

Country Link
GB (1) GB311835A (en)

Similar Documents

Publication Publication Date Title
GB311835A (en) Improvements relating to sound reproducing apparatus
GB851993A (en) Permeable flexible tubes
GB448977A (en) Improvements in flexible tubes
FR1046198A (en) Further development of pendant tubes with conical rings for aquatubular boilers
DK61871C (en) Sound reproducing apparatus with oscillating diaphragm.
CA473903A (en) Methods and means for the manufacture of pliable endless tubes and tubes manufactured thereby
CA307006A (en) Acoustic apparatus with sound diaphragm
CA307007A (en) Acoustic apparatus with sound diaphragm
CA483396A (en) Push-pull amplifier tube
GB309555A (en) Improvements in and relating to sound producing devices
CA471613A (en) Flexible tubes and methods of making the same
FR722263A (en) Method and device for the transmission by microphone of sounds emitted by an instrument
FR1063212A (en) Apparatus especially intended for laryngectomees, with the aim of producing phonation despite the absence of vocal cords
FR727225A (en) Conical diaphragms for apparatus used for the reproduction and recording of sound
GB324493A (en) Improvements in or relating to sound reproducing or transmitting instruments
AU155619B2 (en) Improved amplifier gas tube
CA308190A (en) Sound amplifier
CA307694A (en) Sound reproducing apparatus
CA308714A (en) Inner tube making apparatus
CA481507A (en) Inner tubes
CA315648A (en) Photographic sound recording apparatus
GB177408A (en) Improvements in cigarette holders, tobacco pipes and the like
CA487876A (en) Spinning-in the ends of tubes
CA488402A (en) Speed modulation amplifier tubes
CA314803A (en) Sound amplifying horn