Winding and setting mechanism for watch movements, characterized by a drive pinion rigidly connected with the stem, by a sliding crown wheel mounted between the drive pinion and the center of the movement and cooperating with the ratchet wheel for the winding of the drive spring, and by a setting wheel mounted between the drive pinion and the periphery of the movement. The crown wheel has a circular opening engaged on a fixed pivot element of circular shape and of a diameter less than that of said opening, and it is held in engagement with the drive pinion by a portion of a bridge which extends trangentially to its toothing.
The mechanism has a sliding and rotary stem 2 for controlling two functions of a digital display watch. The stem 2 carries a fixed pinion 4. An intermediate gear 6 is mounted rotatably at the end of a rocking lever 32. Pivotal movement of the lever 32 against the action of a spring 36 is produced by the stem 2. In a first position of the stem 2, the gear 6 is in mesh with a date setting wheel 8 but out of mesh with the pinion 4. In a second position, the gear 6 is engaged by the pinion 4 and remains in mesh with the wheel 8. In a third, fully pulled out position, the gear 6 remains engaged by the pinion 4 and is pulled out of mesh with the wheel 8 and into mesh with a time setting wheel 10.
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.
The cold circular saw comprises a base with a saw table, a saw arm hinged to the saw table and supporting a power driven saw blade, a linear power transmitting mechanism hinged between the swingable saw arm and the stationary machine base to move the saw arm in the feeding direction, and a hydraulic cylinder-and-piston unit hinged between the machine base and the saw arm parallel to the feeding power transmitting mechanism to exert a positive biasing force in the direction opposite to the feeding direction, thus eliminating the play in the hinge of the saw arm and in the hinges of the feeding device.
In an electronic wristwatch a hands mechanism is adjusted manually by a pull-out stem. When the stem is pulled out, it displaces a correction wheel to operatively connect the stem with the hands mechanism. The correction wheel is moved tiltingly so that only a force-transmission side thereof (adjacent the hands mechanism) is raised and lowered. The opposite side of the correction wheel serves as a fulcrum for such tilting motion. The force-transmission side thus moves within a chamber conventionally provided in the hands mechanism and thus minimizes the height of the watch.
The invention relates to a control mechanism for a timepiece of the type comprising a frame (10) defining a reference plane and, secured to this frame: a control rod (12) furnished with an annular groove (14) having a width l, an external diameter D and an internal diameter d, mounted so as to move in translation on the frame (10) along a first axis (AA') included in said plane, and a retaining plate (20) mounted on the frame (10) parallel to said plane and comprising a locking piece (22) mounted so as to rotate about a second axis (BB') perpendicular to the reference plane and interacting with said rod (12) by engagement in the groove (14), in order to limit its translational movement.
