Abstract: A device for stopping the striking of a time-striking clock at night which includes a striking stop contact driven by a clock gear train through the agency of an associated intermittent gear train. The intermittent movement of the striking stop contact is controlled in connection with the preselected times at which the strikings are to be made, so that the stopping and resumption of the striking may be selected not to fall on the preselected times, thus assuring a reliable operation of stopping the striking at a desired time.

Abstract: An electrophonic musical instrument which can be of sufficiently small size to be incorporated in a portable electronic timepiece, having operating members which serve to input data corresponding to pitch and timing information for a sequence of musical notes to be stored in an internal memory, and having means whereby said sequence of musical notes can be subsequently automatically reproduced audibly by actuating another operating member.

Abstract: An electronic timepiece having an acoustic hour information function in which a photosensitive switch mechanism essentially comprising a photosensitive element is provided to detect a quantity of light below a predetermined value in the surrounding environment where the timepiece is placed and control the acoustic hour information function of the timepiece depending upon the detected result.

Abstract: A time signal timepiece has a timekeeping portion and an electronic sound generating portion. The electronic sound generating portion comprises two counters, two oscillator circuits and a coincidence circuit. The hour signal from the timekeeping portion makes the first oscillator circuit oscillate. The first counter counts the number of hour signals. The second counter counts the number of signals from the first oscillator circuit which determines an interval of a time signal sound. The coincidence circuit has a function to stop an oscillation of the first oscillator circuit by detecting a coincidence of contents of the first counter with that of the second counter. The signal from the first oscillator circuit actuates the second oscillator circuit which determines the frequency of the time signal sound. The second oscillator circuit then generates the number of signals corresponding to the present time and having predetermined interval and frequency.

Abstract: A cuckoo clock has a clock mechanism and a pair of whistles for producing the cuckoo sound. An air stream is flowed sequentially through the two whistles by bellowless mechanical structure actuated by the clock mechanism.