GB358673A - Improvements in electromagnetic escapements for clock mechanisms - Google Patents
Improvements in electromagnetic escapements for clock mechanismsInfo
- Publication number
- GB358673A GB358673A GB26457/30A GB2645730A GB358673A GB 358673 A GB358673 A GB 358673A GB 26457/30 A GB26457/30 A GB 26457/30A GB 2645730 A GB2645730 A GB 2645730A GB 358673 A GB358673 A GB 358673A
- Authority
- GB
- United Kingdom
- Prior art keywords
- wheel
- mainspring
- shaft
- current
- disc
- 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
- G04C5/00—Electric or magnetic means for converting oscillatory to rotary motion in time-pieces, i.e. electric or magnetic escapements
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Braking Arrangements (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
358,673. Clocks. MICHL, R., 6, Ederova Ulica, Elektrana, Czecho-Slovakia. Sept. 4, 1930, No. 26457. Convention date, Sept. 4, 1929. [Class 139.] Escapements; winding - apparatuts, electric.-In an escapement for clock mechanism, the running down of the clock train under the drive of the mainspring or weight is checked by means of a synchronous electrical machine or an A.C. inductor, in place of a mechanical escapement. To allow, however, for current interruptions the device is combined with a mechanical escapement which is only released when the current fails. The shaft b of the clock train (which includes a mainspring or weight) carries rigid with it the hub and axis f of a wheel e between wheels c, d which are loose on shaft b ; wheel i being rigid with wheel d. Wheel i is geared through worm h to the shaft of a rotor g of the synchronous machine, t being the stator winding. The motor may be of the kind set out in Specification 191,313, [Class 139, Watches &c.]. When current is flowing, a coil u holds a brake off the disc g, and rotating balls ware raised to depress a sleeve w<1>. This rocks a lever k, counterweighted at k<11>, clockwise about its pivot k<1> so that a pawl p on this lever locks the pin m<1> on a pendulum m for an escape wheel n rigid with wheel c. This locks wheel c. With the machine running at synchronous speed the mainspring or weight drives the shaft b at a constant speed, the tendency of the mainspring to speed up shaft b being checked by the counter action of disc g and balls w. When the current fails, coil u is deenergized and the brake arrests disc g, so that the mainspring cannot speed up the disc g. At the same time balls w fall, sleeve w<1> and lever k rise, and pawl p releases the pendulum so that the mechanical escapement assumes control of the shaft b. Pawl p is prevented from clockwise rotation by pin p<1> on lever k. Where a Ferraris motor is used to keep the mainspring wound up, the coil s thereof may be tapped to supply the current for coils t, u.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS358673X | 1929-09-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB358673A true GB358673A (en) | 1931-10-15 |
Family
ID=5452472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB26457/30A Expired GB358673A (en) | 1929-09-04 | 1930-09-04 | Improvements in electromagnetic escapements for clock mechanisms |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB358673A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2558935A (en) * | 1944-09-21 | 1951-07-03 | Ibm | Sustained power electric clock |
-
1930
- 1930-09-04 GB GB26457/30A patent/GB358673A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2558935A (en) * | 1944-09-21 | 1951-07-03 | Ibm | Sustained power electric clock |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US1825382A (en) | Magnetic clock escapement | |
| GB358673A (en) | Improvements in electromagnetic escapements for clock mechanisms | |
| GB746465A (en) | Improved electromagnetic impulse device for driving clocks | |
| US2658329A (en) | Electrically wound and set watch | |
| US2027944A (en) | Automatic starting device for synchronous motors | |
| US678953A (en) | Electric clock. | |
| US2120353A (en) | Synchronizing clock | |
| US2281493A (en) | Electric clock | |
| US2242654A (en) | Impulse timepiece | |
| US2535214A (en) | Electrically synchronized timing mechanism | |
| US2191976A (en) | Clock | |
| US1867315A (en) | Synchronous motor | |
| US1734941A (en) | Electrical actuating means for clocks and other instruments | |
| US3665699A (en) | Device for locking an electro-dynamically maintained balance/balance-spring | |
| US416804A (en) | prentiss | |
| US2188169A (en) | Time measuring mechanism | |
| US3236043A (en) | Magnetic brake for clock escapements | |
| US1394689A (en) | Self-winding clock | |
| US2490340A (en) | Electric clock system | |
| US1913849A (en) | Electric clock | |
| US2308244A (en) | Electric-impulse time-instrument system | |
| US619028A (en) | Electrochronograph | |
| US1367534A (en) | Attachment for secondary clocks | |
| US2628690A (en) | Multiple-barrel power spring assembly | |
| GB309548A (en) | Improvements in and relating to electrically wound clocks |