GB345860A - A sound producing instrument - Google Patents

A sound producing instrument

Info

Publication number
GB345860A
GB345860A GB13423/30A GB1342330A GB345860A GB 345860 A GB345860 A GB 345860A GB 13423/30 A GB13423/30 A GB 13423/30A GB 1342330 A GB1342330 A GB 1342330A GB 345860 A GB345860 A GB 345860A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
instrument
nozzle
valve
air pressure
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
GB13423/30A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB345860A publication Critical patent/GB345860A/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
    • G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
    • G10K9/02—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers driven by gas; e.g. suction operated

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Soil Working Implements (AREA)

Abstract

345,860. Horns; diaphragms. GALBARINI, A., 4, Piazza L. v Bertarelli, Milan, Italy. May 1, 1930, No. 13423. Convention date, May 2, 1929, [Class 13.] A sound-producing instrument operated by air pressure or a vacuum comprises a diaphragm 1 formed with a central aperture which is closed by a valve 3 pressed by a spring 4. The chamber 2 is placed in communication with a vacuum through the nozzle 5. The instrument can be operated by air pressure by interchanging the nozzle 5 and trumpet 6, or by placing the valve 3 below the diaphragm. In the modification shown in Fig. 2, the diaphragm consists of several leaves with apertures of increasing diameter.
GB13423/30A 1929-05-02 1930-05-01 A sound producing instrument Expired GB345860A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE345860X 1929-05-02

Publications (1)

Publication Number Publication Date
GB345860A true GB345860A (en) 1931-04-02

Family

ID=6254864

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13423/30A Expired GB345860A (en) 1929-05-02 1930-05-01 A sound producing instrument

Country Status (1)

Country Link
GB (1) GB345860A (en)

Similar Documents

Publication Publication Date Title
GB345860A (en) A sound producing instrument
US2410454A (en) Voice-transmitting gas mask
GB472549A (en) Improvements in or relating to microphones
GB288435A (en) Improvements in mutes for brass and like wind musical instruments
GB244051A (en) Improvements relating to electro-dynamic loud speakers
GB349679A (en) Improvements in or relating to vibro massage apparatus
GB189941A (en) Improvements in or relating to musical tops
US1586452A (en) Loud-speaking apparatus of the electromagnetic type
GB743653A (en) Improvements in toys
GB257271A (en) Telephone with free vibrating diaphragm surface
GB705560A (en) Improvements in or relating to contact microphones
GB244798A (en) Improvements in and relating to electrically actuated horns and the like
GB549826A (en) Improvements relating to electrically operated sound producing horns
GB264726A (en) Improvements in loud speaking telephones
US1446273A (en) Combination individual-valve-unit pneumatic
GB138532A (en) Improvements in fluid-pressure operated sound signalling devices
GB197675A (en) Improvements in wind musical instruments
GB396290A (en) An improved valve for dental plates
GB162411A (en) Improvements in spraying apparatus
GB250719A (en) Improvements in or relating to diaphragms for sound-reproducing instruments
GB321994A (en) Improvements in or relating to transmitters for telephone systems and the like
GB641248A (en) Improvements in or relating to intermittently operated whistle signal units
GB668002A (en) Improvements in or relating to means for attaching reeds to mouthpieces of musical instruments
GB280772A (en) Hornless loud speaker
GB248845A (en) Improvements in and relating to loud speakers for wireless telephony, and the like