GB757044A - Improvements in or relating to alarm clocks - Google Patents
Improvements in or relating to alarm clocksInfo
- Publication number
- GB757044A GB757044A GB458054A GB458054A GB757044A GB 757044 A GB757044 A GB 757044A GB 458054 A GB458054 A GB 458054A GB 458054 A GB458054 A GB 458054A GB 757044 A GB757044 A GB 757044A
- Authority
- GB
- United Kingdom
- Prior art keywords
- alarm
- spring
- control disc
- disc
- arbor
- 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
- 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
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- General Physics & Mathematics (AREA)
- Electromechanical Clocks (AREA)
Abstract
757,044. Clocks. JUNGHANS H. and JUNGHANS AKT.-GES., GEB. Feb. 16, 1954 [Feb. 16. 1953]. No. 4580/54. Addition. to 698,810. Class 139. An alarm clock comprises means for automatically changing the ringing volume during the running down of the alarm spring. The alarm mehanism is similar to that described in the parent Specification and comprises a control disc 1 which is frictionally mounted on the alarm spring arbor 9 and which determines the amplitude of swing of the hammer 3, Figs. 1 and 3. A locking lever 5 is'so located that its arm 5a arrests the disc 1 in the position shown in Fig. 3, in which it limits the amplitude of swing of the hammer 3 until the alarm spring 8 expands sufficiently to meet the arm 5b of the lever 5 which is thereby rocked to free the disc 1 which then rotates until arrested by the stop 10 and the alarm hammer 3 is allowed its full swing and strikes the gong (not shown). After further expansion of the alarm spring 8 the lever 5 is moved sufficientlv for its arm 5c to arrest the alarm mechanism. Fig. 1. The locking lever may be generally V-shaped and mounted between two mechanism plates, Fig. 4 (not shown). In a second example the control disc 31, Fig. 5, is not moved immediately the alarm mechanism is released but only when a finger 33 frictionally mounted on the alarm spring arbor 9 has rotated substantially a complete revolution to meet a projection 13e of a spring,32 frictionally connected to the control disc. The spring 32 may be omitted and the hub of the control disc shaped accordingly. In the third example the control disc 41, Fig. 15, is frictionally mounted on the alarm spring arbor and has projections 42, 43, 44, which co-operate successively with a spring detent 45. A finer 46 is mounted on the alarm spring arbour 9. The arrangement is such that each projection 42, 43, 44 is arrested in turn by the detent while the alarm spring arbor 9 continues to rotate until the finger 46 deflects 'the spring detent 45. Fig. 18, sufficiently to free the projection 42, 43, 44. The duration of the "soft" alarm period is thereby increased.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEJ25D DE942977C (en) | 1949-10-10 | 1949-10-10 | Alarm clock with low-volume control |
| DEJ6924A DE1153328B1 (en) | 1949-10-10 | 1953-02-16 | Alarm clock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB757044A true GB757044A (en) | 1956-09-12 |
Family
ID=33160403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB458054A Expired GB757044A (en) | 1949-10-10 | 1954-02-16 | Improvements in or relating to alarm clocks |
Country Status (5)
| Country | Link |
|---|---|
| AT (1) | AT186194B (en) |
| CH (1) | CH339131A (en) |
| DE (1) | DE1153328B1 (en) |
| FR (1) | FR65964E (en) |
| GB (1) | GB757044A (en) |
-
1953
- 1953-02-16 DE DEJ6924A patent/DE1153328B1/en active Pending
-
1954
- 1954-02-15 FR FR65964D patent/FR65964E/en not_active Expired
- 1954-02-15 CH CH339131D patent/CH339131A/en unknown
- 1954-02-15 AT AT186194D patent/AT186194B/en active
- 1954-02-16 GB GB458054A patent/GB757044A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH339131A (en) | 1959-06-15 |
| DE1153328B1 (en) | 1963-08-22 |
| FR65964E (en) | 1956-03-27 |
| AT186194B (en) | 1956-07-10 |
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