Abstract:
A time adjusting device for an electronic timepiece utilizes a manually rotatable mechanism which generates pulses corresponding in frequency and number with the speed and extent of rotation thereof. Each pulse which is generated is thereafter converted into a plurality of pulses. A manually actuatable switch applies either the normal periodic time pulses to a time counter or the plurality of pulses to the time counter upon actuation to adjust the time count therein.
Abstract:
A pulse generating means is adapted to be rotated in either direction by a manual operation and to produce a plurality of trains of pulse signals the frequencies of which are varied in accordance with the speed of rotation. The pulse trains have different phase differentials which are inverted when the direction of the rotation of the pulse generating means is reversed. Either the up counting mode or the down counting mode of an up-and-down counter is selected in accordance with the output from the pulse generating means, so as to correct the contents of the counter by an addition or a subtraction.
Abstract:
The place shift-up mechanism of a digital clock comprises ratchet feed mechanism which permits manual setting of the clock even during the shift-up operation. The ratchet feed mechanism comprises an eccentric cam secured to a rotary shaft which also carries an eccentric operation pin. A ratchet wheel is rotatably supported by the shaft. A place shift-up lever is supported so as to be capable of rocking and sliding movement and has a forked leg plate with spaced legs receiving the eccentric cam between them. One leg of the forked leg plate has a feed pawl for engagement with the ratchet wheel and also a hook pawl engageable by the operation pin to move the place shift-up lever in one direction. The other leg of the forked leg plate has a return pawl which is engageable by the operation pin to move the plate shift-up lever in an opposite direction. The place shift-up lever is rocked by the eccentric cam and is moved by the operation pin first in one direction and then in the other to cause the feed pawl to engage the ratchet wheel to advance it one tooth for each revolution of the rotary shaft.
Abstract:
An electronic timepiece correction circuit for a digital display electronic timepiece wherein the same digital display is utilized with timekeeping circuitry capable of producing two types of time information to display both types of time information is provided. Mode select circuitry that is coordinately disposable between a timekeeping mode and a correction mode is disposed intermediate a manually actuatable control circuit and the timekeeping circuitry and digital display. When the mode select circuitry is disposed in a timekeeping mode, actuation of the control circuitry will result in the digital display changing from a display of the first type of time information to a display of the second type of time information produced by the timekeeping circuitry. However, when the mode select circuitry is in a correction mode, the mode select circuitry will select the particular timekeeping circuitry to be corrected, and if the timekeeping circuitry to be corrected is producing the second type of time information, the mode select circuitry will change over the digital display from the display of the first type of time information to the second type of time information.
Abstract:
Time correcting means for a digital electronic watch enables time correction to be carried out by manually applying pressure to a pressure sensitive diode. By changing the magnitude of the applied pressure, the time correcting speed can accordingly be changed in two or three steps.
Abstract:
A battery operated watch includes an actuator mechanism adapted to actuating indicator hands of the watch. The actuating mechanism includes a gear train adapted to drive indicator hands, a motor for driving the gear train, and an electronic block unit. The electronic block unit includes an oscillator and electronic circuit for operating the motor. A mechanism plate and bridge are provided. A carrier plate of insulative material is disposed between the mechanism plate and bridge. The carrier plate has pockets, including indentations, bores and openings, for receiving and retaining in position at least some components of the actuating mechanism. Means is provided for securing the mechanism plate, bridge, and carrier plate together, including a plurality of pillars extending between the mechanism plate and the bridge.
Abstract:
A compensator for correcting any time gain or loss in the minute and hour hand works in a time-keeping mechanism, wherein signals are received and converted into first and second electrical signals at predetermined time intervals, includes a servo unit for receiving the electrical signals. Upon receiving the first signal, the servo unit drives a first lever to contact and drive a first pin to a first position, and upon receiving the second signal, the servo unit drives a second lever to contact and drive a second pin to a second position. A first clutch is fixed to the first pin and is adapted to uncouple the minute and hour hand works from the mainspring assembly when the first pin is driven to the first position and to drive the minute and hour hand works to a first time setting. A second clutch is fixed to the second pin and is adapted to drive the minute and hour hand works to a second time setting when the second pin is driven to the second position and thereupon to couple the minute and hour hand works to the mainspring assembly.
Abstract:
Switching functions of an electronic timepiece including switching for time amendment, are controlled by a stem which is rotatable and axially movable. When in neutral axial position, the stem is rotatable to display alternatively hours, minutes and seconds or month and date. When pulled out to its outer axial position, the stem is rotatable in one direction to select the time function (hours, minutes, month or date) to be amended and is rotatable in the opposite direction to supply pulses from a dividing circuit to the counter of the selected time function to effect the desired amendment. When pushed in to an inner axial position, the stem actuates which means to illuminate the time display.
Abstract:
A winding stem mechanism including a winding shaft having a detent portion comprised of a pair of annular peripheral recesses with an annular step portion therebetween, and a pair of annular stops each adjacent a respective one of the recesses, and mounted for rotation and for being axially slidable. A resilient spring-like member normally engages a first of the recesses to define a normal position of the shaft and when the shaft travels in a first axial direction the spring-like member climbs the annular step portion to engage the second of the recesses. When the shaft travels in a second axial direction it pushes the annular stop adjacent the first recess to flex the spring-like member to permit the shaft to travel to a second operating position and flex in a direction effective to bias the shaft back from the second operating position to the normal position when the shaft is released.
Abstract:
A device for preventing reverse transmission of motion in a gear train including a drive and driven gear that are enmeshed together in a train of gears. The drive and driven gears are configured such that the rotative motion is transmitted from the drive gear to the driven gear but not from the driven gear to the drive gear due to a blockage created by the teeth of the drive and driven gear.