GB984498A - Timekeeping device - Google Patents
Timekeeping deviceInfo
- Publication number
- GB984498A GB984498A GB4178563A GB4178563A GB984498A GB 984498 A GB984498 A GB 984498A GB 4178563 A GB4178563 A GB 4178563A GB 4178563 A GB4178563 A GB 4178563A GB 984498 A GB984498 A GB 984498A
- Authority
- GB
- United Kingdom
- Prior art keywords
- jewel
- oscillator
- free end
- wheel
- carrying
- 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
- G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
- G04C3/08—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically
- G04C3/10—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically driven by electromagnetic means
- G04C3/101—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically driven by electromagnetic means constructional details
-
- 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
- G04B11/00—Click devices; Stop clicks; Clutches
- G04B11/02—Devices allowing the motion of a rotatable part in only one direction
- G04B11/04—Pawl constructions therefor, e.g. pawl secured to an oscillating member actuating a ratchet
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Adornments (AREA)
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
984,498. Ratchet gearing. UNITED STATES TIME CORPORATION. Oct. 23, 1963 [Oct. 31, 1962; May 13, 1963], No. 41785/63. Heading F2Q. [Also in Division G3] A timekeeping device comprises a ratchet wheel 22 mounted on a base 10 for driving a time train (not shown), this wheel being stepped-on by a jewel 20 carried by a free end of an elastic mechanical oscillator mounted on the base and which is electromagnetically maintained e.g. in known manner through a transistor circuit including a co-operating coil and magnet impulsing device, the mechanical oscillator being so constructed that the jewel 20 is driven in a curvilinear looped path in substantially a single plane, the jewel engaging the wheel teeth during only a small part of its path of travel. The teeth may be of magnetic material and stepped-on past a detent magnet 27. In one form, Fig. 1, the oscillator consists of a first spring blade 14 anchored to the support 12 and having fixed at an angle thereto adjacent its free end a second spring blade 17 carrying the jewel. The inherent oscillation frequencies of the parts 14, 17 are arranged so that the effective oscillations of both parts have the same frequency but the part 17 has a greater amplitude than the part 14, there being a phase shift between the oscillating patterns of about 90 degrees. The size of the oscillation curve of the jewel may vary within relatively wide limits without affecting its function. In another form the oscillator, 40, Fig. 5, comprises a pivoted rigid inertia arm 42 having a controlling spring 46, this arm having fixed thereto adjacent a free end the resonating spring element 17 carrying the jewel 20. A magnetic mass 45 counterbalanced at 44 co-operates with the impulsing coil 30. In a third form, the oscillator 70, Fig. 7, comprises a single resilient blade element shaped in a bent formation as shown so that the jewel 20 at its free end describes the figure-of-eight shaped path 72, the wheel teeth being engaged at a position during one quarter of the cycle. In a fourth embodiment, the oscillator comprises a magnetostrictive bar anchored at one end and carrying at its free end the resonating element 17.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1962U0009355 DE1254089B (en) | 1962-10-31 | 1962-10-31 | Drive arrangement for driving a gear wheel of a time-keeping device |
| US28000063A | 1963-05-13 | 1963-05-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB984498A true GB984498A (en) | 1965-02-24 |
Family
ID=26000947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4178563A Expired GB984498A (en) | 1962-10-31 | 1963-10-23 | Timekeeping device |
Country Status (2)
| Country | Link |
|---|---|
| CH (1) | CH421826A (en) |
| GB (1) | GB984498A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103912649A (en) * | 2014-04-02 | 2014-07-09 | 厦门理工学院 | Giant magnetostrictive material driven ratchet mechanism |
-
1963
- 1963-10-23 GB GB4178563A patent/GB984498A/en not_active Expired
- 1963-10-30 CH CH1334063A patent/CH421826A/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103912649A (en) * | 2014-04-02 | 2014-07-09 | 厦门理工学院 | Giant magnetostrictive material driven ratchet mechanism |
| CN103912649B (en) * | 2014-04-02 | 2017-06-06 | 厦门理工学院 | The ratchet mechanism that a kind of giant magnetostrictive material drives |
Also Published As
| Publication number | Publication date |
|---|---|
| CH1334063A4 (en) | 1966-06-15 |
| CH421826A (en) | 1967-04-15 |
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