Abstract:
An actuator device for use with an interval timer comprises a manually displaceable setting member displaceable between a nonworking position and a working position and a locking lever for releasably locking the setting member in its working position whereby an output device may be actuated by the setting member when same is moved into its working position. The setting member is biased into its nonworking position by a biasing spring and is maintained in its working position against the restoring force of the biasing spring by the locking lever. The locking lever is mounted for pivotal movement into a locking position in response to manual depression of the setting member to thereby prevent return movement of the setting member and is mounted for tilting movement to an unlocking position in response to either further manual depression of the setting member or in response to movement of an external output member to thereby permit the setting member to return to the nonworking position.
Abstract:
A device for making time settings and time corrections in a digital clock. The time-indicating elements other than the last time unit indicating element are preliminarily set to a time that is to be set in the clock. The clock driving circuit is prepared by manually opening a switch for disenabling thereof automatically when the least time unit time-indicating element assumes a selected position. The position of the least time unit element is sensed by a sensor and when it arrives at the selected position a second switch in parallel with the first-mentioned switch is automatically opened by the sensor so that the driving circuit is disenabled and the time indicated on the clock least time unit time-indicating element is retained. The driving circuit is enabled by manually controlling or closing of the first-mentioned switch upon coincidence of real time, as indicated by a time standard signal, with the time set into the clock. When the driving circuit is energized under manual control it automatically restores itself for the manual and automatic sequential operations necessary to automatically disenable it and enable it in making time settings and corrections.
Abstract:
A time-detecting system for a digital interval timer comprises a plurality of detecting wheels mounted for rotation independently of each other upon a detection shaft. The time-indicating wheels of the timer are also mounted for rotation independently of each other upon the detection shaft and each timing wheel is positioned on the shaft adjacent one of the detecting wheels. Each detecting wheel includes a set of projections which extend toward its associated timing wheel and each timing wheel has a corresponding set of holes for receiving therein the projections when the detecting wheels and timing wheels are angularly aligned with respect to each other. A biasing spring urges the detection shaft in one direction to force the detecting wheels against their associated timing wheels so that when the projections and holes on each set of wheels are in alignment, the biasing spring will force the detection shaft in one direction causing the projections to slide into their respective holes. The movement of the detection shaft thus provides an output indicating that the reference time set in the timer coincides with the actual time displayed by the time-indicating wheels.
Abstract:
A time-setting device for setting the timing wheels in a digital interval timer comprises an operating lever mounted for pivotal movement between a timing wheel of a time-indicating system and a timing wheel of a reference time-indicating system. The operating lever is mounted for pivotal movement in one direction towards one timing wheel and for pivotal movement in the other direction towards the other timing wheel and a biasing spring continuously biases the operating lever into a middle position intermediate the timing wheels. A ratchet wheel is affixed to each timing wheel and a pair of pawls are mounted on oposite sides of the operating lever so that movement of the operating lever towards one timing wheel causes one pawl to engage with one ratchet wheel and effect angular displacement of the ratchet wheel along with its associated timing wheel through predetermined angular increments whereas movement of the operating lever towards the other timing wheel causes the other pawl to engage with the other ratchet wheel and effect angular displacement of the other ratchet wheel along with its associated timing wheel through a predetermined angular increment. Each timing wheel may be selectively positioned in the desired angular position by repeatedly moving the operating lever until the desired position is reached.
Abstract:
Apparatus for making time adjustments or corrections in a digital clock having a plurality of time-indicating driven elements, one of which indicates the least time unit in the clock, for example, seconds. A pawl lever having a pawl for engaging a stop on the driven seconds wheel for indicating the least time units is manually actuated to stop this seconds wheel after a correct time has been set in the hours, tens of minutes and minutes time-indicating wheels. Upon release of the seconds wheel, the time is correctly and accurately set in the clock including correct time as to the least time unit. The seconds wheel is stopped by engaging it and using its force of rotation to disengage an input drive element therefrom or to open a switch disenabling a drive motor. The pawl lever is released at the time of a time signal. The seconds wheel is releasably held at a given position of rotation thereof corresponding to a given time indication when making the time correction or setting.