GB773379A - Improvements in or relating to escapement regulators - Google Patents
Improvements in or relating to escapement regulatorsInfo
- Publication number
- GB773379A GB773379A GB31843/54A GB3184354A GB773379A GB 773379 A GB773379 A GB 773379A GB 31843/54 A GB31843/54 A GB 31843/54A GB 3184354 A GB3184354 A GB 3184354A GB 773379 A GB773379 A GB 773379A
- Authority
- GB
- United Kingdom
- Prior art keywords
- staff
- balance
- magnet
- permanent magnet
- fixed
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C39/00—Relieving load on bearings
- F16C39/06—Relieving load on bearings using magnetic means
- F16C39/063—Permanent magnets
-
- 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
- G04B31/00—Bearings; Point suspensions or counter-point suspensions; Pivot bearings; Single parts therefor
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electromechanical Clocks (AREA)
Abstract
773,379. Watch bearings. JUNGHANS, H., and JUNGHANS AKT.-GES., GEB. Nov. 3, 1954 [Nov. 3, 1953], No. 31843/54. Class 12 (1). [Also in Group XVIII] In a time-piece, the pressure of the balance staff in the bearings is relieved by permanent magnetic means. The balance staff 12, Fig. 1, has thin end pivots 12a and extends between bearing plates 10, 11. A permanent magnet disc 17 is secured to the staff 12 and co-operates with a fixed permanent magnet ring 19 to relieve partly or completely the axial load on the bearing. The thickened shank 12b of the staff 12 extends into bores 10a, 11a in the plates 10, 11 whereby excess transverse movement of the staff 12 due to shock is prevented. Excessive axial movement of the staff 12 is prevented by stops 20 on either side of the balance 16. The cooperating magnets may be of the same or opposite polarity and their relative positions are chosen accordingly. The magnets may be of a metallic, partly metallic or non-metallic substance. A damping disc 34, Fig. 2, of a substance having a low electrical resistance may be located adjacent the magnet 31 on the balance staff. The balance staff may have conical bearing ends. If desired the balance itself may be in the form of a permanent magnet. In another embodiment, Fig. 4, the balance staff 53 is hollow and is mounted on a steel wire damped between plates 50, 51. A cylindrical magnet 57 or member of magnetic material fixed to the staff cooperates with a coaxial fixed magnet. In an example (not shown) a ring of ferromagnetic material is fixed to the balance staff and cooperates with a horseshoe magnet. In the example shown in Fig. 8, the balance staff 100 is supported by the attraction between a cylindrical permanent magnet 101 secured to the top of the staff and a ring permanent magnet 102 fixed to a plate 103 which has a bearing 103a for the thin upper pivot of the staff 100. The thin lower pivot 100b of the staff 100 projects into a guide bore 104a in the plate 104 to prevent wandering of the bottom end of the staff. The staff 100 may, as shown, carry a stabilizing weight 107. Wandering of the bottom end of the staff may be prevented by having a pointed magnet at the lower end of the staff and' a stationary coaxial magnet on the adjacent frame plate. In another example, Figs. 12 and 13, the hollow balance staff 153 is mounted by bearings 154 on a wire 151 stretched between the limbs 144a, 144b of a U-shaped frame 144 made of a metal or a synthetic resin. The escape wheel 142 is in a plane at right-angles to the balance 158 and the escape lever is therefore cranked. A cylindrical permanent magnet 162 is cemented to a sleeve 161 fixed to the staff 153 and co-operates with a permanent magnet 163 cemented in a bearing casing 152 riveted to the limb 144b of the frame 144. The permanent magnets may bo partially or completely enclosed in a housing and a pivoted regulating lever one arm of which may be more or less introduced into the air gap between the magnets may be provided, Figs. 14 and 15 (not shown). The regulating lever is made of a substance of low electrical resistance.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE773379X | 1953-11-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB773379A true GB773379A (en) | 1957-04-24 |
Family
ID=6684152
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB31843/54A Expired GB773379A (en) | 1953-11-03 | 1954-11-03 | Improvements in or relating to escapement regulators |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB773379A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2469358A3 (en) * | 2010-12-21 | 2017-08-30 | Dubois & Depraz S.A. | Mechanism for transmitting axial and rotary movements between two offset shafts |
WO2019102374A1 (en) * | 2017-11-21 | 2019-05-31 | Patek Philippe Sa Geneve | Holder for a wheel carrying a display disc |
-
1954
- 1954-11-03 GB GB31843/54A patent/GB773379A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2469358A3 (en) * | 2010-12-21 | 2017-08-30 | Dubois & Depraz S.A. | Mechanism for transmitting axial and rotary movements between two offset shafts |
WO2019102374A1 (en) * | 2017-11-21 | 2019-05-31 | Patek Philippe Sa Geneve | Holder for a wheel carrying a display disc |
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