Abstract: The present invention is concerned with a control mechanism adapted to be incorporated into a watch with a main setting device, which comprises at least two engagement positions, namely one rest position and at least one pulled position, and with at least one auxiliary setting device. The invention is also concerned with all types of watches suitable for the integration of such a control mechanism and comprising said mechanism, in particular a world time watch with an analogue indication of the time of the day and of a corresponding location for different time zones with an offset relative to the local time by a multiple of an hour or of half an hour, which thus allows a simultaneous and reliable reading of the time of the day for the indicated time zones and which, in particular, avoids inadvertent modification of the settings of the watch.

Abstract: The present invention concerns an electronic device such as, in particular, a timepiece (1), including a case (2) made of a plastic material delimited by a back cover (6) and a lateral wall (4) called the middle part, characterised in that this electronic device includes at least one means (36, 38) intended, via the effect of an application of pressure, to control at least one electronic function such as a horological function of said electronic device, this means (36, 38), directed towards the interior of the case (2), being made integral with said case (2) and being set back with respect to the outer surface of the latter, said means (36, 38) being activated using a pointed element such as the tip of a pen.

Abstract: To enable instantaneously making switchover of an operating part between a locked state and an unlocked state. An operating button is arranged to be capable of being rotatingly operated between a locked position and an unlocked position, and a stopper member is provided integral with the operating button. When the operating button is in the locked position, projections engage with grooves to restrict movement of the operating button toward a casing. When the operating button is rotated degrees to come to the unlocked position, the projections engage with grooves, which are greater in depth than the grooves, whereby the operating button can be operatively pushed toward the casing.

Abstract: A watch has a switch mechanism 10 supported by a base 11 and a lid 13 that houses a generally conventional electric watch arrangement (not shown). The mechanism includes a semi-circular disc shaped finger tip engagable pusher 16 that can be rotated in either direction from a mean position, and also pushed radially inwards. Such movement of the pusher 16 produces radial movements of biassed plungers 23, 26 and 30 that are urged through respective apertures 24, 27 and 31 in a wall 12 of the base 11. As a result respective electrical circuits of the watch arrangement are closed to change watch functions. The mechanism 10 serves the same purpose as push buttons conventionally used in the prior art but is much easier for the user, especially if the watch is being worn on a wrist when watch functions need to be changed.

Abstract: The invention concerns a method for assembling a screwed crown on a watch case, characterized in that it includes the following steps:

Abstract: A structural component made of hard material for a wristwatch, characterized in that it includes a hole fitted with an inner threading which is integral with said component, said threading being directly obtained by injection and thus without removing any material of said component for example by machining.

Abstract: A control device with a snap function includes a support (10), a push-button (12) mounted so as to move in translation along an axis on the support, and a spring element (14) which is not secured to the support or to the push-button. The spring element (14) is formed of an elongated sheet made of resilient material, inserted between the push-button (12) and the support (10), and includes a pair of support zones (36) located at its ends and at least a median support zone arranged in its central portion. These support zones cooperate respectively with the head (28) of the push-button and with a raised surface (24c) of the support. In the rest position, the sheet has a bent or V-shaped cross section, which can deform to create a snap action during the travel of the push-button which tends to bend the spring element longitudinally. Such a device can be applied to control a mechanical or electrical function of a watch or another apparatus of small size.

Abstract: Control button having a metal body (10) provided along its axis with a blind hole (16) closed by a cap (18) and extended by a wall (14) of revolution. The body (10) includes a groove (20) made in the outer surface of the wall (14) and channels (26) connecting said surface to the inside of the blind hole (16). The button further includes a fitting (12) made of synthetic material, formed of a ring (28) closing the groove and extended radially by raised portions (34) as far as the openings of the channels (26) in the wall (14) of a radial structure with several branches (30) closing the channels (26), and a core (32) connecting the branches (30) to secure between them the different parts (28, 30, 32, 34) of the fitting (12).

Abstract: A novel actuating or regulating element, especially winding buttons or push-pieces, for a clock on a wristwatch, a shaft, with an actuating head provided on one end of the shaft and with a mechanism for tightly routing the shaft through one wall of the watch housing using at least one washer which concentrically surrounds the axis of the shaft.

Abstract: The present invention concerns a wristwatch type of watch. More specifically, the watch comprises a display (11), an electronic circuit (12) controlling the display, a time set stem (13), and at least two electrical contact elements (14, 14″). The time set stem (13) can be placed in different axial positions and the stem comprises a crown (16) accessible from outside the watch and a helicoidal zone (19) which may have three helicoidal elements (20, 20′, 20″). When the time set stem is placed in a position such that the contact elements (14, 14″) are facing the helicoidal zone (19), rotating the time set stem causes an electrical connection on the electronic circuit (12) to alternately open and close. This generates at least two electrical impulse signals which are transmitted to the electronic control circuit. These signals are used to regulate different watch functions, such as time correction or controlling the time belt or the date.

Abstract: The invention concerns a method for assembling a screwed crown on a watch case, characterized in that it includes the following steps:

Abstract: The present invention provides a rotational aid for setting a multimode electronic device of the type having a rotatable ring coupled to a switching mechanism. The rotational aid includes a handle and a device for coupling the handle to the ring. The handle is positionable in at least a retracted position and a deployed position. When in the deployed position, the handle projects outwardly from the ring such that the rotation of the ring is facilitated by the movement of the deployed handle. The present invention also provides a multimode electronic device having a case and an integrated circuit operable in a plurality of states. The electronic device includes a rotating switching mechanism at least partially disposed within the case. The switching mechanism includes a rotatable setting stem operatively coupled to the integrated circuit. The electronic device also includes a ring rotatably mounted on the case. The ring is coupleable to the switching mechanism.

Abstract: Metal case part (9) having a wall whose outer surface (11) includes separated knobs (23a, 23b, 23c) formed by a synthetic material, characterized in that one face (12) opposite to the outer surface (11) of the part (9) includes a groove (15) connected to said outer surface (11) by through passages (13a, 13b, 13c) at locations provided for the knobs (23a, 23b, 23c) and in that said knobs (23a, 23b, 23c) originate from a filler (20) made of synthetic material projecting from the outer surface (11), while being connected to each other through said through passages (13a, 13b, 13c) to a strand 25, also made of synthetic material, held on the bottom of the groove (15).

Abstract: A device for actuating a timepiece mechanism, in particular a chronograph mechanism, this timepiece including a fitting ring (12) having an opening (14) for accommodating a movement (16), an independent push-button (4a, 4b) sliding along a first direction (D1), a piston (18a, 18b) sliding along a second direction (D2, D3) in the fitting ring (12), said piston (18a, 18b) being intended to co-operate with a component of the movement and a push transmission element to transmit a push of said pushbutton (4a, 4b) to said piston (18a, 18b), characterized in that the push transmission element includes a rigid actuation lever (22a, 22b) articulated at one point (P) on the fitting ring (12) and in the plane thereof.

Abstract: A device for leakproofing instrument-control buttons, particularly for the winding and time-setting buttons (3) of watches, comprises a sealing element (8) fitted on the casing of the instrument in order to form a leaktight seal against the button, as well as a bridge unit (7) beneath which the button projects laterally and which carries an articulated lever (1) having a cam appendage (2) for pressing the button against the sealing element in a first position and for releasing the button to permit conventional movements thereof in a second position, the upper portion of the button (3) being machined in a manner such that a compartment is formed therein for housing a small piston element (4) in an axially slidable manner, the cam appendage (2) of the articulated lever (1) acting on the piston element (4), which is urged axially outwardly by resilient means (5) so as to take up clearance created between the button (3) and the casing.

Abstract: An operating means such as for example a crown, with an element rigid with the housing and with an operable element which is movable with respect to this. Between these two elements there is arranged a lip seal with an elastic lip, which bears on the element rigid with the housing and delimits the timepiece inner space to the surroundings. By way of the fact that the lip is led in the direction of the surroundings conically onto the element rigid with the housing and lies on this element with pretensioning, on the one hand with an inner space excess pressure it may release itself from the element rigid with the housing for the purpose of pressure compensation between the inner space and the surroundings and on the other hand with a surrounding excess pressure it is more strongly pressed on the element rigid with the housing for the purpose of sealing the inner space with respect to the surroundings.

Abstract: Pocket watch comprising a middle, a movement accommodated in the middle, a crystal, a cover for protecting the crystal, a stem for setting the time of the movement, and a device for locking the cover. The locking device can be released by manipulating the stem to open the cover. A water-tight enclosure enables the movement to be accommodated and protected. The water-tight enclosure encloses the middle. The locking device is outside the water-tight enclosure. The stem passes through the water-tight enclosure through an aperture and a water-tight joint provided in the aperture. The water-tight enclosure includes a casing ring accommodated inside the watch-case.

Abstract: An improved setting mechanism for an electronic watch having a case and circuitry for performing timepiece functions. The setting mechanism includes a setting stem mounted in an opening through the case of the watch. The setting stem is mounted to permit axial and rotational movement of the stem in relation to the case. The setting mechanism also includes a device for generating a first electrical signal which includes incremental electrical pulses in response to a continuous clockwise rotation of the setting stem. The setting mechanism further includes a device for generating a second electrical signal which includes incremental electrical pulses in response to a continuous counterclockwise rotation of the setting stem. The first and the second electrical signals provide inputs to predetermined setting functions for the electronic watch and permit an incremental update of values during the setting functions at a rate directly related to the rate of rotation of the setting stem.

Abstract: A safety valve with an element rigid with the housing and with an operable element which is movable with respect to this. Between these two elements there is arranged a lip seal with an elastic lip, which bears on the element rigid with the housing and delimits the timepiece inner space from the surroundings. By way of the fact that the lip is led in the direction of the surroundings conically onto the element rigid with the housing and lies on this element with pretensioning, on the one hand with an inner space excess pressure it may release itself from the element rigid with the housing for the purpose of pressure compensation between the inner space and the surroundings and on the other hand with a surrounding excess pressure it is more strongly pressed on the element rigid with the housing for the purpose of sealing the inner space with respect to the surroundings.

Abstract: The assembly according to the invention comprises a hard plastic watch case (2), having on its middle part one or more sealed push buttons (5) made in an inexpensive manner. Each push button (5) comprises a hard plastic stem (10), for example the same material as the case, and an elastomer flexible head (12) which is over moulded onto an external surface (15) of the case. The case and the push buttons may be manufactured by injecting two materials in a single mould. The invention applies to electronic watches and to mechanical watches.

Abstract: Push button comprising a stem (10), provided with a head (5) able to be manipulated and sliding into an opening (2) provided in the middle part (3) of a timepiece, and stopping means preventing the removal of said stem (10), wherein the stem (10) comprises, on the head side (5), a main cylindrical body (11) extended by a shank (13) separated from the latter by a groove (12) intended to receive an O-ring sealing gasket (30), said shank (13) having at its end an axial stud (17) ending in an annular rim (18), and the stopping means comprise a sleeve (20) inserted between the wall of the opening (2) and the shank (13), partially blocked by a ring (22) of greater external diameter than that of the opening (2) and of substantially equal aperture to the diameter of the stud (17), said (20) sleeve compressing the O-ring sealing gasket (30) and being fixed to the shank (13) by riveting of the annular rim (18).

Abstract: Crown setting device for an alarm setting crown and/or a time setting crown in an analog wristwatch uses a rotatable top ring mounted on the watch case, having gear teeth on its underside which mesh with gear teeth on the crown(s) to rotate the crown(s). This serves to set the time and/or alarms with less time and effort than conventional crown setting. Preferably involute gear teeth are used, but a simple version employs the conventional crown knurling as "teeth".

Abstract: A timepiece 1 comprising in particular a case 8 having a back cover 10 and a middle part 12 in a single piece, a control stem 26 co-operating with a pull-out piece 44, and an extractor device 48 enabling a part of the pull-out piece 44 to be raised to free it from the control stem 26. The timepiece is characterized in that the extractor device 48 comprises an extractor element 48 having a first branch 50 which slides in the movement 2 in a direction substantially perpendicular to the plane of the movement 2, the end of said first branch 50 being substantially facing the pull-out piece 44, and a second branch 52 which comprises a portion projecting from the periphery of the movement 2 to form a gripping arm. The extractor element 48 is free to move between a first position called the rest position, in which it does not act on the pull-out piece 44, and a second position called the operating position, in which the end of the first branch 50 pushes the pull-out piece 44 out of the groove of the control stem 26.

Abstract: The watertight push button device is intended for example to equip a timepiece, in particular for controlling said timepiece. It comprises a body (2) inside which a cavity (4) of generally oblong shape is arranged, and a push button stem (6) arranged inside the cavity (4) and capable of moving, inside the latter, by a sliding movement when its head (8) is pushed.In order to prevent a shock at the end of the travel and/or an accidental activation of the push button, the device comprises pneumatic means intended to dampen the sliding movement of the stem (6) inside the body (2). These pneumatic means comprise an annular chamber defined around the stem (6) by a fixed gasket (28) and one of the sealing gaskets (20,22) mounted on the stem. Leakage means are preferably provided between the fixed gasket and the stem or the body.

Abstract: In the case of a wristwatch (1) with a clockwork (13), which is surrounded by a case (4) and is operable by means of a winder (20) fitted in rotary manner to the outside of the case (4) by a spindle (7) guided through said case (4) and in which the winder (20) is constructed in sealed, screw-in manner, incorrect operation is largely avoided in that signalling or indicating means are provided in operative connection with the winder (20) and indicate whether or not the winder (20) is in the screwed in state.

Abstract: A push button assembly for an electronic wrist instrument requires only two components, a push button member and a gasket which dually functions as a spring, thereby reducing the cost of manufacturing and easing assembly.

Abstract: A push-piece-crown (1) mounted on a guide tube (T) secured in a case (C) housing a timepiece, and fixed in rotation as well as axially to a control stem (TR) adapted to occupy at least two axial positions, of which a first ("0") is stable and a second ("-1") is transitory, comprising a head (2) fixed to said stem and mounted to be axially movable on said tube (T), and a return spring (8) bearing at one end on said head (2) for urging it towards said stable position, in which said spring (8) also bears at its other end on an annular abutment (9) movable within said head (2) between said stable position, in which said abutment (9) bears on a shoulder (13) on the interior of said head (2) and said transitory position, in which the abutment (9) rests on a shoulder (E3) of said tube (T).

Abstract: A watch control device comprises a crown with a central cavity surrounded by an annular cavity in the bottom of which is formed a groove. The lateral external face of the annular cavity has a thread adapted to be screwed onto a thread formed on the lateral external face of an external part of a tube screwed into a watch casing. An injected thermoplastic elastomer seal is disposed in the annular cavity. This seal comprises two parts of the same external diameter, but of different internal diameter, the portion of greater diameter engaging in the groove and the portion of smaller diameter being that on which the tube acts in the screwed up position of the crown.

Abstract: This valve (1) for a watch case comprises a head (3) and a tube (4) onto which the head can be screwed. A stem (8) fixed to a core (5) borne by the head is surrounded by a return spring (7) bearing, on the one hand, under the head and, on the other hand, onto a bottom (3) exhibited by the tube through a ring (14) and a first packing (6). A second packing (18) is mounted under the head in line with the tube. When the head is screwed down the second packing (18) is compressed and the valve is inoperative and at the same time totally sealed. When the head is unscrewed the first packing (6) is able to rise up against the return force of spring (7) if the fluid pressure prevailing within the case is higher than that on the exterior thereof. An excessive interior pressure which can damage the case is thus avoided.

Abstract: A time-piece in the form of a wrist-watch which comprises a casing including a dial and a side wall in which a slot is formed, hour and minute hands, drive means located within the casing and supporting the hands on the dial for rotating the hands relative to the dial to indicate time, and a manual operating member located substantially within the casing for rotating the hands relative to the dial by rotation with the hands about corresponding substantially parallel axes. The operating member has a peripheral edge portion of which only a limited region is exposed through the slot in the side wall of the casing, and is movable between an operative position for rotating the hands and an inoperative position not acting upon the hands. A spring is located within the casing and resiliently biasses the operating member towards the inoperative position.

Abstract: The sealed control arrangement for a timepiece is lodged in a case (20) and includes a crown (46) rotating around a tube. The crown includes an integrally formed head (10), central portion (23) and lateral skirt (12). The internal wall (11) of the skirt exhibits a cylindrical surface over its entire height. A packing (13) having the form of an annular bandage surrounding the tube exhibits an annular projection (16) on its internal portion corporating with an annular groove (15) formed in the tube. The external portion of said bandage is shaped in a manner such that whatever be the axial position of the crown (46), the lower edge (24) of the internal wall of the skirt is always in contact with said external portion of the bandage. The arrangement allows correction of data displayed by the timepiece while exhibiting excellent reliability in respect of the sealing which it assures.

Abstract: The present invention relates to a mechanism for controlling the actuation of a member of a mechanical or electrical time piece or watch by a push piece. It consists in a planar spring 13, the two end 14, 15 of which cooperate the one with the other. One of these ends 14 of this spring is in contact with a stem of the push piece 7 sliding into the watch case 5 and the side 13 opposite to this end 14 rests against an abutment 5.

Abstract: The watch case (1) is of plastic material and provided with a hole (3) in which a push button (6) may slide. The end (12) of the stem (7) of the push button includes a bulge (13) the diameter of which is greater than that of the neck (11) formed at the end of the hole opening into the interior of the case (1). When the stem (7) is introduced into the hole (3) of the wall (2) the bulge (13) elastically deforms the neck (11) which afterwards reassumes its initial form and assures axial positioning of the stem (7).

Abstract: A seal assembly which is screw threaded onto the stem of a wrist watch with the seal and stem being related to a tube connected with the watch case in a conventional manner. The screw-on seal of this invention includes an internally threaded member engaged with an externally threaded portion of the watch stem with the exterior surface of the internally threaded member being provided with a groove or notches receiving an O-ring seal to enable relatively quick and easy repair of a watch when an existing stem is broken due to weakened areas in the stem formed when a conventional seal is positioned in a groove on the stem. This seal assembly can also be used in new watch construction especially when installed in combination with a conventional water seal crown thereby providing double protection against entry of water, moisture, dust and similar material that may adversely affect the operation of the watch.

Abstract: A hand adjustment structure for a wristwatch which has a spur gear structure disposed intermediate the minute and the hour gears of the watch includes a crown gear structure on one side of the spur gear disc for engagement with the pinion of a time setting shaft by which the spur gear structure can be rotated and together therewith the watch's minute and hour hands radial projections are stamped axially out of the spur gear disc in a circular array so as to form the crown gear structure integrally with the spur gear disc.

Abstract: The setting stem 27 of a watch is engaged in a radial hole 29 of an inner metallic caseband 16 with a packing 31 to assure fluid tightness. An outer caseband 3 of hard material includes a radial hole 28 aligned with the hole in the inner caseband. A crown 32 of the same material as the outer caseband may cap the stem. This arrangement enables uniting the wear resistant properties of the hard material with good fluid tightness of the stem.

Abstract: In a time-setting mechanism for an analog time-piece, when an operation member is moved in its axial direction, a pinion provided on the operation member is brought into mesh with a gear which is normally rotated in an interlocked relation to hands. When the operation member is turned in this state, the torque thereof is transmitted via the pinion and gear to the hands for time-setting. The pinion and gear are made of synthetic resins, and the pinion is made of a resin material having higher flexibility than the resin material of the gear.

Abstract: An apparatus for correcting a timepiece display includes a winding stem which extends within the timepiece and without the timepiece. The winding stem is movable from a normal carrying position to a first changing position. A convex region is formed on the winding stem. A sliding pinion is mounted about the stem. A first calendar correction operating wheel is loosely fit about the stem in the normal carrying position. The convex portion of the stem engages the first calendar correction operating wheel to provide a friction fit when the outside operating member is in the first step changing position to conduct date correction.

Abstract: In order to enable a watch movement to be mounted in a case having a back cover integral with its case band, the manual control device of this movement comprises a shaft having a terminal pair of resilient claws. Notches are disposed in the claws and grip a pin disposed diametrically in the central housing of the crown. The body of the crown is manufactured in one piece with a sleeve engaging in a bore of the case band. The movement is inserted with the shaft by presenting in slantwise, then the crown is put into place by forcing the pin between the claws to introduce it into the notches.

Abstract: An alarm on-off mechanism for an alarm watch is provided wherein two alarm push-pieces are symmetrically provided on opposite sides of the watch case. An alarm lever is interlocked with the alarm push-pieces in such a manner that the alarm is turned on by pressing one of the alarm push-pieces and the alarm is turned off by pressing the other alarm push-piece.

Abstract: A hand setting mechanism including a stem and a sliding pinion slaved to one another by means of a setting lever and a yoke. The sliding pinion is driven in rotation by means of a slit with which it is provided and which cooperates with two flattened surface borne on the stem. The sliding pinion is freely engaged in an orifice pierced in the base plate and is provided with a circular hole which serves as a bearing for a pivot at the end of the stem.

Abstract: An alarm on-off mechanism for an alarm watch is provided wherein two alarm push-pieces are symmetrically provided on opposite sides of the watch case. An alarm lever is interlocked with the alarm push-pieces in such a manner that the alarm is turned on by pressing one of the alarm push-pieces and the alarm is turned off by pressing the other alarm push-piece.

Abstract: In an arrangement for limiting the axial play of gears of a watch time indicating mechanism with drive gears rotatably supported on a support plate with axis extending normal thereto and an adjustment shaft extending parallel to the support plate, a cover plate is mounted on the support plate so as to overlay the gears with arms engaging the gears and further is provided with an arm bent-over into engagement with the adjustment shaft to limit their axial play. The cover plate is U-shaped and has edge portions thereof resiliently received under projections of the support plate for firmly retaining the cover plate on the support plate.

Abstract: This mechanism is intended for time setting of an analog mechanical display in a timepiece. It comprises a manually operable crowned stem (1) arranged to be toggled into at least two axial positions the active one of which is drawn-out relative to the neutral pushed-in position. The stem is provided with a toothed pinion (3) which meshes with an axially displaceable pinion (6). Such pinions are placed side-by-side and a mechanism including a trigger piece (9), a rocking lever (10) and a slider (21) slaves the axially displaceable pinion to the stem. The arrangement is compact and readily integrated into a thin timepiece.

Abstract: Watch constituted by a quartz mechanism, in which the mechanism does not rest on the bottom of the case and comprises a watch time-setting system by electrical contact between the positive pole of a battery and the negative pole of an electronic module containing the time-setting program.The rear face of the mechanism comprises means directed so as to face the bottom of the watch case, and make an electrical contact between the two said poles.The bottom of the watch case is produced from a semi-rigid material having a thickness that decreases progressively for its entire length from the case periphery towards its center and increases close to the center to form a projection. The bottom is capable of becoming elastically deformed under a force, so that, the effect of said force exerted on the bottom, actuates the means designed to make a contact between said two poles, for setting the mechanism to the right time.

Abstract: The stator (10) of the motor serves as a single plate, not only for the rotor, wheels and spindles for hands, but also for the rocker (72), the pulling crank (70) and the setting pinion of the minutes wheel. The stator is shaped locally to form, on the one hand, a groove which guides the end of the setting stem (64) and, on the other hand, a boss (84) into which is driven a pin (82) serving as a spindle for the setting pinion (80).

Abstract: A winding stem mechanism for a watch having a winding stem and a pinion with a shaft body. The winding stem and pinion are dimensioned to slidably fit within a base plate recess, and have respective facing ends. One facing end is provided with a square blind bore, and the other facing end is square and complementary to the blind bore and dimensioned to slidably fit within the blind bore so that the winding stem can slide away from the pinion without displacing same and the winding stem can slide toward the pinion and displace same in the direction of travel of the winding stem. The pinion engages a setting wheel for setting a wheel train.

Abstract: A pushbutton device comprises a pipe or tubular member for being affixed to a casing as of an electronic watch, a pushbutton body axially movably disposed in the pipe, resilient structure for returning the pushbutton body to an original position, structure for retaining the pushbutton body in the pipe, and a plurality of contacts selectively actuatable by the pushbutton body into and out of mutual electrical contact. Either the pushbutton body or the pipe has at least one step on its upper surface remote from the contacts to provide a plurality of stepped strokes of depressed movement of the pushbutton body with respect to the pipe for selective actuation of the contacts. The resilient structure may be a coil spring or a resilient leaf spring.

Abstract: A manually operable setting stem 1 has three stable axial positions defined by a pull out piece 4 cooperating with notches in the head 8a of a spring 8. The illustrated position is a pushed in, neutral position. In an intermediate pulled out position, a return bar 9 moves a sliding pinion 12 into engagement with a gear 17 in mesh with a gear 18 which is in turn in mesh with a gear 19 whose axis can swing about the axis of the gear 18. In the intermediate position, rotation of the stem in one sense adjusts a data ring 14 via a star-wheel 20 on the gear 19; rotation in the other sense adjusts the pre-set alarm time via a gear 21. In the fully pulled out position the return bar slides the pinion 12 further inwardly and with it the gear 17 which meshes with a gear 24 for setting the time indicating mechanism. The stem can be pushed in beyond the stable pushed in position to engage the tip 1a of the stem with an electrical contact. Such operation alternately turns the alarm mechanism on and off.

Abstract: A timepiece having both analog and digital display includes a single stem operated correcting mechanism which adjusts each display independently. A correcting pinion, slidably mounted on a winding stem, provides for engagement at both ends thereof. In a first axial position of the winding stem, one end of the pinion engages a wheel train for correcting the analog display when the stem is rotated. In a second axial position of the winding stem, the correcting pinion engages a spring biased cam whereby electrical switches are intermittently opened and closed when the stem is rotated for correcting the digital display. Advancement or retardation of the displays depends on the direction of stem rotation.