GB862738A - An electric vibrator, particularly for clocks - Google Patents

An electric vibrator, particularly for clocks

Info

Publication number
GB862738A
GB862738A GB24327/59A GB2432759A GB862738A GB 862738 A GB862738 A GB 862738A GB 24327/59 A GB24327/59 A GB 24327/59A GB 2432759 A GB2432759 A GB 2432759A GB 862738 A GB862738 A GB 862738A
Authority
GB
United Kingdom
Prior art keywords
vibrator
july
clocks
electric
electric vibrator
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
GB24327/59A
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Publication of GB862738A publication Critical patent/GB862738A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B23/00—Arrangements producing acoustic signals at preselected times
    • G04B23/02—Alarm clocks
    • G04B23/10—Alarm clocks with presignal; with repeated signal; with changeable intensity of sound
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C21/00—Producing acoustic time signals by electrical means
    • G04C21/16—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times
    • G04C21/20—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times by closing a contact to ring an electromechanical alarm
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C21/00—Producing acoustic time signals by electrical means
    • G04C21/16—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times
    • G04C21/36—Signal repeating devices

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Electromechanical Clocks (AREA)
  • Fire-Detection Mechanisms (AREA)

Abstract

862,738. Audible signalling-apparatus; electric bells. LICENTIA PATENT-VELWALTUNGS-G.m.b.H. July 15, 1959 [July 18, 1958], No. 24327/59. Classes 13 and 118. An electric vibrator 10 as used in an electrically-operated alarm clock 1, has connected in series with its operating coil 8 a resistor 13 having a negative temperature coefficient. When an alarm switch 11 is closed by its operating cam 14, the vibrator 10 buzzes gently, its loudness increasing as the temperature of the resistor rises and its ohmic resistance falls.
GB24327/59A 1958-07-18 1959-07-15 An electric vibrator, particularly for clocks Expired GB862738A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE862738X 1958-07-18
DE349217X 1958-07-18

Publications (1)

Publication Number Publication Date
GB862738A true GB862738A (en) 1961-03-15

Family

ID=61627957

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24327/59A Expired GB862738A (en) 1958-07-18 1959-07-15 An electric vibrator, particularly for clocks

Country Status (2)

Country Link
CH (1) CH349217A (en)
GB (1) GB862738A (en)

Also Published As

Publication number Publication date
CH349217A (en) 1960-09-30

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