GB473968A - Improvements relating to pneumatically operated sound producing horns - Google Patents

Improvements relating to pneumatically operated sound producing horns

Info

Publication number
GB473968A
GB473968A GB1147536A GB1147536A GB473968A GB 473968 A GB473968 A GB 473968A GB 1147536 A GB1147536 A GB 1147536A GB 1147536 A GB1147536 A GB 1147536A GB 473968 A GB473968 A GB 473968A
Authority
GB
United Kingdom
Prior art keywords
blade
disc
casing
screw
seating
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
GB1147536A
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.)
ZF International UK Ltd
Original Assignee
Joseph Lucas 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 Joseph Lucas Ltd filed Critical Joseph Lucas Ltd
Priority to GB1147536A priority Critical patent/GB473968A/en
Publication of GB473968A publication Critical patent/GB473968A/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
    • G10K9/04—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 by compressed gases, e.g. compressed air

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

Abstract

473,968. Fluid-pressure motor horns. LUCAS, Ltd., J., and HARRIS, T. A. April 22, 1936, No. 11475. [Class 13] In a pneumatically-operated horn in which the air pulsation is controlled by the co-operation of a vibratory disc or the like with a seating in the air passage, the vibratory disc is attached to one end of a resilient blade which is fixed at the other end and means are incorporated for varying the effective length of the blade and for adjusting the setting of the vibratory member relative to its seating. As shown in the Figure, the disc d is associated with a seat b formed in the lower portion of a casing a and is carried by a swivel connection e on a blade f clamped between the portions of the casing. The effective length of the blade is adjusted by means of two curved resilient arms i, i riveted to the blade and in engagement with oppositely threaded portions of a screw passing through a hollow screwthreaded sleeve l. The pressure between the disc d and its seating is adjusted by the engagement of the sleeve l with a collar m on the screw j. A horn is attached to the casing by a screw-threaded connection c. In a modification, Fig. 2 (not shown), the ends of the curved resilient arms are clamped between the two portions of the casing and the pressure between the disc and its seat is adjusted by means of a screw-threaded sleeve coaxial with, and external to, the horn connection.
GB1147536A 1936-04-22 1936-04-22 Improvements relating to pneumatically operated sound producing horns Expired GB473968A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1147536A GB473968A (en) 1936-04-22 1936-04-22 Improvements relating to pneumatically operated sound producing horns

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1147536A GB473968A (en) 1936-04-22 1936-04-22 Improvements relating to pneumatically operated sound producing horns

Publications (1)

Publication Number Publication Date
GB473968A true GB473968A (en) 1937-10-22

Family

ID=9986937

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1147536A Expired GB473968A (en) 1936-04-22 1936-04-22 Improvements relating to pneumatically operated sound producing horns

Country Status (1)

Country Link
GB (1) GB473968A (en)

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