GB566611A - A method of and means for converting a silent clock into an alarum clock - Google Patents
A method of and means for converting a silent clock into an alarum clockInfo
- Publication number
- GB566611A GB566611A GB1127043A GB1127043A GB566611A GB 566611 A GB566611 A GB 566611A GB 1127043 A GB1127043 A GB 1127043A GB 1127043 A GB1127043 A GB 1127043A GB 566611 A GB566611 A GB 566611A
- Authority
- GB
- United Kingdom
- Prior art keywords
- clock
- hour hand
- silent
- contact
- 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
- G04C21/205—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times by closing a contact to ring an electromechanical alarm by the hand(s) or handlike members closing the contact
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electromechanical Clocks (AREA)
Abstract
566,611. Time switches. GOODACRE, F. L., and ALLEN, E. H. July 12, 1943, No. 11270. [Class 38 (v)] A silent clock is converted into an alarm clock by replacing its normal glass cover by a rotatable disc 2 of transparent cellulose - derivative material through which extends a plug contact 6 for engagement with the hour hand 5. At the set time, the hour hand is arrested by the contact 6 to make the alarm to sound, and can be freed by withdrawing the contact 6 ; alternatively, the latter could be flexible so as to allow the hour hand to continue its movement. To avoid shortening of the minute hand 4, the hour hand may carry an extension.. The other lead is connected to the time-setting means of the clock hands or to the clock works.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1127043A GB566611A (en) | 1943-07-12 | 1943-07-12 | A method of and means for converting a silent clock into an alarum clock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1127043A GB566611A (en) | 1943-07-12 | 1943-07-12 | A method of and means for converting a silent clock into an alarum clock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB566611A true GB566611A (en) | 1945-01-05 |
Family
ID=9983118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1127043A Expired GB566611A (en) | 1943-07-12 | 1943-07-12 | A method of and means for converting a silent clock into an alarum clock |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB566611A (en) |
-
1943
- 1943-07-12 GB GB1127043A patent/GB566611A/en not_active Expired
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