GB1520734A - Electrically powered sirens - Google Patents

Electrically powered sirens

Info

Publication number
GB1520734A
GB1520734A GB2349774A GB2349774A GB1520734A GB 1520734 A GB1520734 A GB 1520734A GB 2349774 A GB2349774 A GB 2349774A GB 2349774 A GB2349774 A GB 2349774A GB 1520734 A GB1520734 A GB 1520734A
Authority
GB
United Kingdom
Prior art keywords
snap
sirens
motor
plate
electrically powered
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
GB2349774A
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.)
Thomas Ashworth and Co Ltd
Original Assignee
Thomas Ashworth and 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 Thomas Ashworth and Co Ltd filed Critical Thomas Ashworth and Co Ltd
Priority to GB2349774A priority Critical patent/GB1520734A/en
Priority to FR7517199A priority patent/FR2275839A1/en
Publication of GB1520734A publication Critical patent/GB1520734A/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
    • G10K7/02—Sirens in which the sound-producing member is rotated manually or by a motor
    • G10K7/04—Sirens in which the sound-producing member is rotated manually or by a motor by an electric motor

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Braking Arrangements (AREA)
  • Catching Or Destruction (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

1520734 Sirens THOMAS ASHWORTH & CO Ltd 23 May 1975 [28 May 1974] 23497/74 Heading G5J An electrically powered siren has components which are snap-fitted together (i.e. motor 40 to plate 39, plate 39 to cover 13, cover 13 to body 12); in assembly, the motor being brought up to, and then rotated with respect to, the plate 39 to effect the snap-fit. Screws may be inserted into slots 28 for added security. The casing may be formed of plastics material. There may be an additional body part, snap-fitted or screwed to the main body, and containing additional equipment, e.g. transformer 58. The motor may be battery driven. Reference has been directed by the Comptroller to Specification 1,300,905.
GB2349774A 1974-05-28 1974-05-28 Electrically powered sirens Expired GB1520734A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB2349774A GB1520734A (en) 1974-05-28 1974-05-28 Electrically powered sirens
FR7517199A FR2275839A1 (en) 1974-05-28 1975-05-27 ELECTRIC SIREN

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2349774A GB1520734A (en) 1974-05-28 1974-05-28 Electrically powered sirens

Publications (1)

Publication Number Publication Date
GB1520734A true GB1520734A (en) 1978-08-09

Family

ID=10196581

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2349774A Expired GB1520734A (en) 1974-05-28 1974-05-28 Electrically powered sirens

Country Status (2)

Country Link
FR (1) FR2275839A1 (en)
GB (1) GB1520734A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3803388A1 (en) * 1988-02-02 1989-08-10 Josef Sieger Siren rod
EP2273464A1 (en) * 2005-05-10 2011-01-12 Hochiki Corporation Sounder

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2606535A1 (en) * 1986-04-16 1988-05-13 Marques Jean Distress or alarm siren for caravanning campers

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3803388A1 (en) * 1988-02-02 1989-08-10 Josef Sieger Siren rod
EP2273464A1 (en) * 2005-05-10 2011-01-12 Hochiki Corporation Sounder
US8125320B2 (en) 2005-05-10 2012-02-28 Hochiki Corporation Fire alarm system

Also Published As

Publication number Publication date
FR2275839B1 (en) 1977-12-09
FR2275839A1 (en) 1976-01-16

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee