GB581109A - Improvements in electric time switches suitable to control radio sets and alarms - Google Patents

Improvements in electric time switches suitable to control radio sets and alarms

Info

Publication number
GB581109A
GB581109A GB1916744A GB1916744A GB581109A GB 581109 A GB581109 A GB 581109A GB 1916744 A GB1916744 A GB 1916744A GB 1916744 A GB1916744 A GB 1916744A GB 581109 A GB581109 A GB 581109A
Authority
GB
United Kingdom
Prior art keywords
alarms
time switches
control radio
electric time
radio sets
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
GB1916744A
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.)
CHARLES HENRY NICHOLSON
Original Assignee
CHARLES HENRY NICHOLSON
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 CHARLES HENRY NICHOLSON filed Critical CHARLES HENRY NICHOLSON
Priority to GB1916744A priority Critical patent/GB581109A/en
Publication of GB581109A publication Critical patent/GB581109A/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
    • G04C21/305—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 by the hand(s) or handlike members closing the contacts

Landscapes

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

Abstract

581,109. Time switches. NICHOLSON, C. H. Oct. 6, 1944, No. 19167. [Class 38 (v)] A time switch comprises an insulating ring 18 carrying contact strips equipped with sockets for engagement by plugs on leads 3, 9 connected, respectively, to a radio set 17 and bell 14, the latter being supplied by the secondary of a transformer 15, the primary of which is energized from the supply-point 12 in series with a master switch 16. The hour hand itself forms part of the control circuit and engages the contacts in turn, several forms of hour hand being described, Fig. 4 (not shown). The switch, bell, and transformer are assembled as a unit.
GB1916744A 1944-10-06 1944-10-06 Improvements in electric time switches suitable to control radio sets and alarms Expired GB581109A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1916744A GB581109A (en) 1944-10-06 1944-10-06 Improvements in electric time switches suitable to control radio sets and alarms

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1916744A GB581109A (en) 1944-10-06 1944-10-06 Improvements in electric time switches suitable to control radio sets and alarms

Publications (1)

Publication Number Publication Date
GB581109A true GB581109A (en) 1946-10-01

Family

ID=10124865

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1916744A Expired GB581109A (en) 1944-10-06 1944-10-06 Improvements in electric time switches suitable to control radio sets and alarms

Country Status (1)

Country Link
GB (1) GB581109A (en)

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