GB235504A - Improvements in sound producing devices - Google Patents

Improvements in sound producing devices

Info

Publication number
GB235504A
GB235504A GB572625A GB572625A GB235504A GB 235504 A GB235504 A GB 235504A GB 572625 A GB572625 A GB 572625A GB 572625 A GB572625 A GB 572625A GB 235504 A GB235504 A GB 235504A
Authority
GB
United Kingdom
Prior art keywords
piston
cylinder
diameter
enlargement
sound producing
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
GB572625A
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
Priority to GB572625A priority Critical patent/GB235504A/en
Publication of GB235504A publication Critical patent/GB235504A/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
    • G10K7/00—Sirens
    • G10K7/06—Sirens in which the sound-producing member is driven by a fluid, e.g. by a compressed gas

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Fluid-Damping Devices (AREA)

Abstract

235,504. Northey, J. P. July 30, 1924. Addition to 209,122. Sirens.-In a siren in which a piston 5 having sound-producing orifices in its walls reciprocates within a correspondingly-apertured cylinder 2, the outer ends of the piston and cylinder are of slightly - reduced diameter, the arrangement being such that, on assembly, the part of the piston of least diameter enters the part of the cylinder of least diameter at about the same time that the parts of the piston and cylinder of normal diameter enter into engagement. The enlargement 7 of the piston may also enter the enlargement 8 of the casing at about the same time. The cylinder 2 may be movable longitudinally to vary the pitch of the note as in the parent Specification.
GB572625A 1924-07-30 1924-07-30 Improvements in sound producing devices Expired GB235504A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB572625A GB235504A (en) 1924-07-30 1924-07-30 Improvements in sound producing devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB572625A GB235504A (en) 1924-07-30 1924-07-30 Improvements in sound producing devices

Publications (1)

Publication Number Publication Date
GB235504A true GB235504A (en) 1925-06-18

Family

ID=9801462

Family Applications (1)

Application Number Title Priority Date Filing Date
GB572625A Expired GB235504A (en) 1924-07-30 1924-07-30 Improvements in sound producing devices

Country Status (1)

Country Link
GB (1) GB235504A (en)

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