GB191115804A - An Improved Electric Time-alarm. - Google Patents

An Improved Electric Time-alarm.

Info

Publication number
GB191115804A
GB191115804A GB191115804DA GB191115804A GB 191115804 A GB191115804 A GB 191115804A GB 191115804D A GB191115804D A GB 191115804DA GB 191115804 A GB191115804 A GB 191115804A
Authority
GB
United Kingdom
Prior art keywords
alarm
time
alarms
bell
clock
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
Inventor
William Hanson Boorne
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
Application granted granted Critical
Publication of GB191115804A publication Critical patent/GB191115804A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G04C21/30—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times with provision for a number of operations at different times, e.g. ringing the bells in a school
    • G04C21/32—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times with provision for a number of operations at different times, e.g. ringing the bells in a school giving indications at a number of places each at a different time, e.g. system of alarms in a hotel
    • G04C21/326—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times with provision for a number of operations at different times, e.g. ringing the bells in a school giving indications at a number of places each at a different time, e.g. system of alarms in a hotel adjustable from the different places themselves

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)

Abstract

15,804. Boorne, W. H. July 7. Time-alarms.-Relates to time alarms of the type in which each alarm circuit has to be closed (1) by the hands of a central master-clock C, and also (2) by apparatus which determines the time of ringing, and is located in each room where an alarm is to be given. In the present invention, the alarms are set by means of dummy clocks c, the hands of which may he placed upon half-hourly contacts, namely 11 and 12 and 1 to 10 respectively. Each contact of the master clock is connected to a distributing- box D and thence to a corresponding contact in each dummy clock. The current may pass through an alarm bell, or may by a relay close the circuit of a bell and lamp. The bell may be provided with a horn b, Fig. 3, for concentrating the sound.
GB191115804D 1911-07-07 1911-07-07 An Improved Electric Time-alarm. Expired GB191115804A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191115804T 1911-07-07

Publications (1)

Publication Number Publication Date
GB191115804A true GB191115804A (en) 1912-06-20

Family

ID=32565321

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191115804D Expired GB191115804A (en) 1911-07-07 1911-07-07 An Improved Electric Time-alarm.

Country Status (1)

Country Link
GB (1) GB191115804A (en)

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