GB378957A - Improvements relating to electrically operated horns - Google Patents

Improvements relating to electrically operated horns

Info

Publication number
GB378957A
GB378957A GB1499831A GB1499831A GB378957A GB 378957 A GB378957 A GB 378957A GB 1499831 A GB1499831 A GB 1499831A GB 1499831 A GB1499831 A GB 1499831A GB 378957 A GB378957 A GB 378957A
Authority
GB
United Kingdom
Prior art keywords
electrically operated
improvements relating
horns
inches
operated horns
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
GB1499831A
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 GB1499831A priority Critical patent/GB378957A/en
Publication of GB378957A publication Critical patent/GB378957A/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
    • G10K9/18—Details, e.g. bulbs, pumps, pistons, switches or casings
    • G10K9/20—Sounding members

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Diaphragms And Bellows (AREA)

Abstract

378,957. Electric horns. LUCAS, Ltd., J., TURNER, E. O., and PURDEN, R. H., Great King Street, Birmingham. May 21, 1931, No. 14998. [Class 13.] In an electric horn, a plate c having a free periphery and mounted on a diaphragm b or other elastic member is closely surrounded without touching by a fixed member d. The amount of clearance may, in the case of a disc of from 2À5 to 3 inches diameter, be about À05 inches or according to the Provisional Specification it may be 1/32 inch or less.
GB1499831A 1931-05-21 1931-05-21 Improvements relating to electrically operated horns Expired GB378957A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1499831A GB378957A (en) 1931-05-21 1931-05-21 Improvements relating to electrically operated horns

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1499831A GB378957A (en) 1931-05-21 1931-05-21 Improvements relating to electrically operated horns

Publications (1)

Publication Number Publication Date
GB378957A true GB378957A (en) 1932-08-22

Family

ID=10051272

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1499831A Expired GB378957A (en) 1931-05-21 1931-05-21 Improvements relating to electrically operated horns

Country Status (1)

Country Link
GB (1) GB378957A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE753269C (en) * 1941-03-21 1951-07-26 Westfaelische Metall Ind A G L Electromagnetic horn, especially for motor vehicles

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE753269C (en) * 1941-03-21 1951-07-26 Westfaelische Metall Ind A G L Electromagnetic horn, especially for motor vehicles

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