GB488502A - Improvements relating to electrically-maintained vibrating bodies - Google Patents

Improvements relating to electrically-maintained vibrating bodies

Info

Publication number
GB488502A
GB488502A GB65537A GB65537A GB488502A GB 488502 A GB488502 A GB 488502A GB 65537 A GB65537 A GB 65537A GB 65537 A GB65537 A GB 65537A GB 488502 A GB488502 A GB 488502A
Authority
GB
United Kingdom
Prior art keywords
electrically
maintained
fork
improvements relating
vibrating bodies
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
GB65537A
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 GB1570238A priority Critical patent/GB488629A/en
Priority to GB65537A priority patent/GB488502A/en
Publication of GB488502A publication Critical patent/GB488502A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/24—Constructional features of resonators of material which is not piezoelectric, electrostrictive, or magnetostrictive

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Table Equipment (AREA)

Abstract

488,502. Electromagnetic interrupters and relays. COYNE, A. E. Jan. 8. 1937. No. 655. [Class 38 (v)] In an electrically-maintained tuning fork operating coils 3 are mounted on the ends of the fork so that the magnetic flux is restricted to the fork itself. Fig. 1 shows a fork operated by direct current which is interrupted at contacts 5, 6. The polepieces 7 are shaped as shown so as to overlap. Fig. 3 shows a form having polarizing coils 2 and operating coils 3 energized by a fluctuating current.
GB65537A 1937-01-08 1937-01-08 Improvements relating to electrically-maintained vibrating bodies Expired GB488502A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1570238A GB488629A (en) 1937-01-08 1937-01-08 Improvements in electrical apparatus for indicating the presence of certain frequencies in a complex sound
GB65537A GB488502A (en) 1937-01-08 1937-01-08 Improvements relating to electrically-maintained vibrating bodies

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB65537A GB488502A (en) 1937-01-08 1937-01-08 Improvements relating to electrically-maintained vibrating bodies

Publications (1)

Publication Number Publication Date
GB488502A true GB488502A (en) 1938-07-08

Family

ID=9708167

Family Applications (1)

Application Number Title Priority Date Filing Date
GB65537A Expired GB488502A (en) 1937-01-08 1937-01-08 Improvements relating to electrically-maintained vibrating bodies

Country Status (1)

Country Link
GB (1) GB488502A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2486394A (en) * 1946-02-25 1949-11-01 Standard Telephones Cables Ltd Selective relay
DE921948C (en) * 1951-12-16 1955-01-07 August Dr Karolus Electrically excited tuning fork
DE1026553B (en) * 1953-06-09 1958-03-20 Leitz Ernst Gmbh Electromagnetic double-armed oscillating system for optical oscillating apertures

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2486394A (en) * 1946-02-25 1949-11-01 Standard Telephones Cables Ltd Selective relay
DE921948C (en) * 1951-12-16 1955-01-07 August Dr Karolus Electrically excited tuning fork
DE1026553B (en) * 1953-06-09 1958-03-20 Leitz Ernst Gmbh Electromagnetic double-armed oscillating system for optical oscillating apertures

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