GB448559A - An alarm clock electric time switch - Google Patents
An alarm clock electric time switchInfo
- Publication number
- GB448559A GB448559A GB3544034A GB3544034A GB448559A GB 448559 A GB448559 A GB 448559A GB 3544034 A GB3544034 A GB 3544034A GB 3544034 A GB3544034 A GB 3544034A GB 448559 A GB448559 A GB 448559A
- Authority
- GB
- United Kingdom
- Prior art keywords
- alarm
- alarm clock
- arm
- time switch
- electric time
- 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
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
- G04C21/20—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times by closing a contact to ring an electromechanical alarm
- G04C21/26—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times by closing a contact to ring an electromechanical alarm put into action by the vibrations caused by the operation of a mechanical alarm work
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electromechanical Clocks (AREA)
Abstract
448,559. Time switches. WARTON, A. H., 69, Milton Road, Hanwell, London. Dec. 10, 1934, No. 35440. [Class 38 (v)] An alarm clock switch has a contact arm 12 pivoted on a termina post 3 and adapted when the alarm goes off to be moved by an ex tension 19 of the hammer movement so as to engage a fixed contact 4 When the alarm wine spring 25 unwinds it expands and engages the lower part 16 of the con tact arm to move it back to the off position. When the alarm mechanism is held off by a manual catch 20 and the spring 25 is wound, the switch arm can be moved on and off at will by means of an operating knob 23.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3544034A GB448559A (en) | 1934-12-10 | 1934-12-10 | An alarm clock electric time switch |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3544034A GB448559A (en) | 1934-12-10 | 1934-12-10 | An alarm clock electric time switch |
Publications (1)
Publication Number | Publication Date |
---|---|
GB448559A true GB448559A (en) | 1936-06-10 |
Family
ID=10377751
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3544034A Expired GB448559A (en) | 1934-12-10 | 1934-12-10 | An alarm clock electric time switch |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB448559A (en) |
-
1934
- 1934-12-10 GB GB3544034A patent/GB448559A/en not_active Expired
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