Abstract: A device for polishing plano-convex lenses, quartz oscillators and the like comprises a lapping dish having a concave spherical surface and mounted for oscillating and rotary movement. The material to be polished is held by a suction rotary chuck which applies the material to be polished against the lapping dish with a selected pressure. Separate motors are provided for rotating and oscillating the lapping dish and for rotating the material to be polished.

Abstract: A film display clock comprises endless display films respectively displaying units of minutes, tens of minutes, and hours. The lengths of the display films are equal.

Abstract: A method for manufacturing a wire printer head comprises providing a wireguide block comprised of a print wire, a hilt connected to the rear end portion of the print wire, a guide tube for guiding the print wire, a return spring for pushing the hilt rearward, a guide pipe for guiding the hilt, and a support plate having a hole therein in which is loosely fitted the guide pipe; and providing a wire driving block comprised of a lever for impacting the hilt, and an electromagnetic driving device for actuating the lever. The wire guide block is first connected to the wire driving block with the hilt directly contacting the lever; then the guide pipe is urged into contact with the hilt by a force weaker than that of the print wire return spring; and then an adhesive is applied to adhere the guide pipe within the support plate hole.

Abstract: A small electric motor, for example for driving a clock comprises a capsule within which are provided a stator, a rotor and a deceleration gear train. One wheel in the deceleration gear train bears a pattern on its periphery for indicating the state of operation of the motor. The capsule is either transparent or is provided with a window for observing the wheel bearing such pattern.

Abstract: A buzzer mechanism for an alarm clock or the like comprises a vibrator member rockably supported on a base plate for angular movement between an inactive position and an active position in which a vibration arm of the vibrator faces a buzzer yoke associated with the alternating driving coil of the clock so as to be vibrated. A coil spring presses the vibrator member against the base plate and also biases it toward active position. A projection on the vibrator member engages the hour wheel so that when the hour wheel is moved axially upon a projection on the hour wheel coming into registry with a hole in an unlocking drum, the vibrator member is permitted to rock to active position. An alarm stop lever is operable manually to return the vibrator member to inactive position.

Abstract: A device for controlling the grinding of a piezo-electric element is designed to convert the frequency of an electric signal produced with grinding of a piezo-electric element into a lower frequency, using frequency converters and a local oscillator and then to select, by means of filters, a frequency generated from the frequency converters at the time when a desired grinding of a piezo-electric element has been obtained so as to bring the grinding operation to a stop in response to the selected signal.

Abstract: An apparatus for forming a character in which picture elements as indication elements are formed in the shape of a matrix to create a character, such as a letter, a numeral, a symbol or the like, in this case the magnifications of the character in both a longitudinal and a lateral direction are suitably increased or reduced and, in case the character has become obscure as a result of such enlargement, an interpolation is performed to the character to render it clear. The apparatus is used, for example, in the case of forming a character with printer.

Abstract: Disclosed is an alarm timepiece having a manual switch adapted to be operated to different settings, each of the settings corresponding to one of a plurality of modes of control functions of alarm. Means are provided to detect to which mode a given setting operation of the switch corresponds and thereby to control the generation of an alarm sound. The different alarm modes include a normal alarm mode, a recurring temporal suspension of the alarm function, selective actuation of the alarm at any selected time, and termination of the alarm function.

Abstract: An operation member slidably supported on a base plate has opposed pawls which are spaced apart and project toward one another. A position control cam and an integral supplementary cam are rotatably supported on the base between the two pawls. The pawls are disposed on different planes so that a first pawl is engageable with the control cam and the second pawl is engageable with the supplementary cam. The operation member is spring biased in a direction to move the first pawl toward the position control cam. The position control cam is provided alternately with deep concaves and shallow concaves. When the first pawl of the operation member engages in a deep concave it is in one position. When it engages a shallow concave it is in a second position. The supplementary cam has teeth at positions corresponding to the concaves of the position control cam.

Abstract: A small-sized buzzer comprises a vibrationally driven vibrator mounted within a case together with drive circuitry for electromagnetically actuating the vibrator. A screw member is threaded into the case at a location spaced from and opposite the free end of the vibrator so as to be repeatedly struck by the vibrator free end during its vibration to produce a buzzer sound. The buzzer sound can be varied by turning the screw member to adjust its spacing from the vibrator.

Abstract: An electrically conductive adhesive comprises electrically conductive particles mixed in a non-conductive base at such a mixing ratio that the conductive particles are not in contact with one another. When this adhesive is disposed between facing electrodes, it provides electric conductivity between the facing electrodes but maintains electric insulation in the lateral direction.

Abstract: In apparatus for generating an alarm sound especially for small watches, all functions of the alarm are controlled by integrated circuitry which detects the state of a common connection point between a manually operable switch and a reference switch which is opened and closed by the timekeeping mechanism. There is thus only one external terminal led out from the integrated circuit for the purpose of connecting to the output side of the reference switch and the manually operable switch. The reduction in the number of terminals permits a corresponding reduction in the number of pins required and a reduction in the size of the circuit. The integrated control circuit includes flip-flops, gate circuits, inverters and a five minute counter.

Abstract: A stator has a pair of magnetic pole portions, and a rotor having N- and S-poles is disposed between the two magnetic portions. Each magnetic pole portion of the stator has two static magnetic poles and a cut-away portion or indent formed therebetween. The stator is quadripolar statically, and bipolar dynamically.

Abstract: A timepiece including two base plates opposite each other and defining a space therebetween, and having a gear train and an electro-mechanical converter for driving the gear train and both disposed in the space between the two base plates. The converter includes a stator comprised of a platelike member defining an intermediate plate portion positioned in the space between the two base plates. The intermediate plate portion supports gear train components and is isolated magnetically from the rest of the stator.

Abstract: An electro-optical display device comprises two electrode plates disposed in superposed spaced relationship from each other with a clearance therebetween, and a substance which exhibits an electro-optical effect, such as liquid crystal material, disposed within the clearance. A plurality of display electrodes are mounted in a predetermined pattern on one electrode plate and a plurality of common electrodes are mounted on the other electrode plate respectively facing predetermined ones of the display electrodes to define therewith display characters. A network of electrical conductors is mounted on the two electrode plates and electrically connected in a predetermined array to the said display and common electrodes. A conductive adhesive electrically connects together, at prescribed junctions, the electrical conductors which are mounted on the two electrode plates.

Abstract: Between picture elements of a character, such as letter, numeral and symbol, which is formed of a pattern of the separate display picture elements, a display picture element for interpolation is formed in conformity with predetermined rules, so that the shape of the character as intended to be displayed has its naturalness held and that the character can be formed in a proper size.

Abstract: A drive pinion is provided with wide teeth and narrow teeth. A follower wheel is provided with teeth which have cut-away portions at their front sides. When the drive pinion rotates in reverse direction, one wide tooth makes contact with an apex of a tooth of the follower gear wheel thereby preventing the reverse rotation of the drive pinion.

Abstract: A method of adjusting the frequency and temperature coefficient of a GT cut quartz oscillator comprises starting with a blank of approximately the frequency desired. An electrode film is deposited on the front and rear faces of the blank. The side ratio between a longer side and a shorter side is adjusted to obtain a zero temperature coefficient. Thereafter portions of the electrode film along the longer sides of the oscillator are removed to reduce the area of the electrode film so as to obtain the desired frequency without changing the side ratio and thus without disturbing the zero temperature coefficient.

Abstract: An electrooptic display device comprises two spacedapart electrode substrates with an interspace therebetween, and a substance which exhibits an electrooptic effect such as liquid crystal material hemetically sealed in the interspace. One one substrate are disposed a plurality of segment electrodes having an array of segment-lead electrodes extending therefrom, and a set of lead electrodes. On the other substrate are disposed a plurality of common electrodes at locations opposite respective ones of the segment electrodes and having extending therefrom common-lead electrodes electrically connected to predetermined ones of the lead electrodes, and a set of connecting electrodes electrically connected to predetermined ones of the segment-lead electrodes. The electrical connection of the electrodes is achieved by an electrically conductive adhesive applied at preselected connection sites between the electrodes.

Abstract: A buzzer comprises an annular magnet, a coil disposed at the inside of the magnet, a vibration plate disposed above said magnet, a core inserted into the central opening of said coil and with its one end facing said vibration plate, a case and a yoke. Said magnet said vibration plate and said yoke are held by the magnetic attraction of the magnet.