GB511318A - Improvements in audible alarm devices - Google Patents

Improvements in audible alarm devices

Info

Publication number
GB511318A
GB511318A GB1693638A GB1693638A GB511318A GB 511318 A GB511318 A GB 511318A GB 1693638 A GB1693638 A GB 1693638A GB 1693638 A GB1693638 A GB 1693638A GB 511318 A GB511318 A GB 511318A
Authority
GB
United Kingdom
Prior art keywords
fitting
operate
audible alarm
alarm devices
lamp socket
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
GB1693638A
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.)
HENRY ANTHONY MOORE
General Electric Co PLC
Original Assignee
HENRY ANTHONY MOORE
General Electric Co PLC
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 HENRY ANTHONY MOORE, General Electric Co PLC filed Critical HENRY ANTHONY MOORE
Priority to GB1693638A priority Critical patent/GB511318A/en
Publication of GB511318A publication Critical patent/GB511318A/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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Emergency Alarm Devices (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

511,318. Electric alarm devices. GENERAL ELECTRIC CO., Ltd., and MOORE, H. A. June 7, 1938, No. 16936. [Class 13] An audible alarm device is provided with a cap adapted to co-operate with the lamp socket in a streetlight fitting and is constructed so that it can be operated by the supply to which the socket is connected . As shown, a motor horn 1, electrically modified to operate on 200-260 volts, is provided with a metal extension 2 terminating in a screw cap 3 adapted to fit into the lamp socket of a street-light fitting. The alarm may be brought into operation by a relay controlled by a special signal imposed on . the supply network or pilot wires may be provided to connect the fitting to the normal lighting supply circuit. Specification 396,436, [Group XL], is referred to.
GB1693638A 1938-06-07 1938-06-07 Improvements in audible alarm devices Expired GB511318A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1693638A GB511318A (en) 1938-06-07 1938-06-07 Improvements in audible alarm devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1693638A GB511318A (en) 1938-06-07 1938-06-07 Improvements in audible alarm devices

Publications (1)

Publication Number Publication Date
GB511318A true GB511318A (en) 1939-08-16

Family

ID=10086337

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1693638A Expired GB511318A (en) 1938-06-07 1938-06-07 Improvements in audible alarm devices

Country Status (1)

Country Link
GB (1) GB511318A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4616351A (en) * 1978-03-17 1986-10-07 Gary L. Hall Pest control apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4616351A (en) * 1978-03-17 1986-10-07 Gary L. Hall Pest control apparatus

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