Abstract: An apparatus for rewinding a magnetic tape in a video cassette comprises a feeding reel and a winding reel which hold a cleaning tape along a part of the magnetic tape; a pushing pad for pushing the cleaning tape on the magnetic tape; and means for driving the winding reel to feed the cleaning tape at a low speed to the direction reversing to the forward direction of the magnetic tape.

Abstract: A sectional rack comprises a plurality of modular rack units for holding articles, and pivotal joint means for connecting the rack units together so that the units can pivotally swing relative to one another. Each of the rack units comprises oblong top and bottom plates having holes in both end portions, a post for connecting the two plates together by fitting at both ends in the holes of the plates, and top and bottom fasteners for securing and fastening the post to the plates. The pivotal joint means comprises oblong top and bottom connecting plates having pivot holes formed in both end portions, stepped posts having their ends extending into the pivot holes of the two connecting plates to connect them pivotally to the top and bottom plates of the rack units, and top and bottom fasteners for securing and fastening the posts to the top and bottom plates of the rack units. The top fasteners have a recess each and the bottom fasteners a projection each adapted to mate with the recess.

Abstract: A compact hand-held demagnetizing device is used for demagnetizing a magnetic recording and reproducing head. It comprises a handle portion and a demagnetizing head. The handle portion contains a circuit for generating a decreasing alternating current for exciting a drive coil for the demagnetizing head. Means is provided to indicate the time when the demagnetizing operation is initiated or when the demagnetizing operation can be initiated and when the demagnetizing operation is completed.

Abstract: Timepiece comprises an upper case, a middle plate connected to the upper case, and a lower case connected to the upper case. Gear train and driving mechanism of the timepiece are supported by the upper case and the middle plate. Thus inspection and repair can be done very easily.

Abstract: A demagnetizer for a magnetic head for a recording/reproducing device. The demagnetizer includes an electromagnet for producing an alternating magnetic field which gradually decreases in intensity. The demagnetizer is mounted in a case formed in the shape of a tape cassette. The electromagnet is resiliently held within the case adjacent to the opening for the magnetic head to be demagnetized. The electromagnet is energized by an oscillating drive circuit, the output of which is controlled by a capacitor.

Abstract: A rotary time-indicating plate-type digital display device comprises a rotary minute drum carrying a set of minute-indicating plates and a rotary hour drum carrying a set of hour-indicating plates. A drive system effects continuous rotation of the minute drum to individually turn over successive minute-indicating plates to display the time in minutes and effects intermittent rotation of the hour drum to individually turn over successive hour-indicating plates to display the time in hours. A lower system coacts with the minute and hour drums to effect synchronous turning over of the minute-indicating plate which indicates the 59th minute and each successive hour-indicating plate. An adjusting mechanism is disposed adjacent the minute drum for enabling adjustment of both the minute and hour drums to set the time displayed by the indicating plates.