Clock utilizing a magnetic escapement mechanism
阅读：232发布：2022-01-03
专利汇可以提供Clock utilizing a magnetic escapement mechanism专利检索，专利查询，专利分析的服务。并且A clock of the magnetic escapement type having a cyclically impulsed tuning fork mounted between frame plates which are formed of metal and synthetic resin, respectively. The tuning fork is secured to the edge of a base plate having a body portion which lies between the legs of the tuning fork and having a mounting portion. The base plate has a deep notch adjacent the region of securing of the tuning fork and the mounting portion engages a block of damping material secured to the frame. One leg of the tuning fork cooperates with a magnetic escapement wheel mounted upon an escapement shaft which is vertically oriented. The escapement shaft has a worm driving a worm wheel in such a way that the reaction force of the worm wheel acts in a direction opposite to the action of gravity. The worm is of special antifriction construction consisting of a coil spring with the corresponding portion of the shaft being annularly relieved. The escapement shaft has a flywheel with a manual wiper for starting purposes with the flywheel being loose upon the shaft.，下面是Clock utilizing a magnetic escapement mechanism专利的具体信息内容。
1. In a clock construction the combination of a frame comprising a pair of frame plates horizontally spaced from one another, a resilient vibrating member extending horizontally between the plates and mounted at one end with respect to the plates while the other is free to vibrate horizontally, means including a coil energized by alternating current for cyclically impulsing the vibrating member, a magnet mounted on the vibrated end of the member for moving with it in a horizontal plane, a magnetic escapement wheel mounted in a horizontal plane adjacent the vibrated member and having a zig-zag magnetic path cooperating with the magnet to induce rotation in the wheel, said wheel having an escapement shaft which extends vertically between the plates, vertically spaced bearings including a lower thrust bearing secured to one of the plates for engaging the respective ends of the escapement shaft, the shaft having a worm and cooperating worm wheel, the direction of rotation of the shaft and the hand of the worm being such that the endwise reaction force of the worm wheel upon the worm is such as to tend to lift the shaft thereby to reduce the endwise gravitational force exerted at the lower thrust bearing, and a regulator in the form of a small permanent magnet in the vicinity of the vibrating member, the regulator including means on the frame for adjustably mounting the permanent magnet for movement toward and away from the vibrating member.
2. The combination as claimed in claim 1 in which the worm is in the form of a coil spring on the escapement shaft and in which the escapement shaft is annularly relieved in the region of engagement of the worm wheel to permit increased meshing of the worm wheel free of any interference with the tips of the teeth on the latter, the coil spring being of light gage smoothly surfaced wire engaging the shaft only at the ends thereof and floating in between.
3. In a clock mechanism the combination comprising a frame, a tuning fork formed of a flat strip bent into U-shape to define a curved base and first and second legs arranged parallel to one another, a flat base plate centered between the legs of the tuning fork and parallel to the latter, the base plate having a body portion and a mounting portion, the mounting portion of the base plate being clamped to the frame, the body portion of the base plate having one edge secured in centered position inside the curve of the base of the tuning fork, means including a coil and source of a-c. for cyclically impulsing the first leg of the tuning fork, a magnet secured to the second leg of the tuning fork, a magnetic escapement wheel cooperating with the magnet and having a shaft mounted in the frame, the wheel having a zig-zag magnetic path thereon so that it is progressively advanced as the magnet oscillates back and forth, the base plate being of sharply reduced section in the region between the body portion and the mounting portion so as to permit relatively free resilient movement of the body portion on which the tuning fork is mounted thereby to facilitate transfer of energy from the first leg of the tuning fork to the second leg while minimizing transfer of energy to the frame, and indicator means coupled to the escapement wheel shaft.
4. The combination as claimed in claim 3 in which the base plate is deeply notched between the body portion and the mounting portion, the notch extending inwardly from the region adjacent the point of attachment of the tuning fork and extending parallel to the latter.
5. The combination as claimed in claim 3 in which a relatively massive spacer block is interposed between at least one of the plates and the mounting portion of the base plate to inhibit transmission of vibrational energy from the base plate to the frame.
6. The combination as claimed in claim 5 in which the block is in the form of porous sintered metal for damping vibrations of the mounting portion of the base plate.
7. In a clock the combination comprising a frame, a magnetic escapement wheel having a shaft mounted in the frame, a vibrated element mounted on the frame at one of its ends, means for cyclically impulsing the vibrated member, the vibrated element having a magnet at the other end for cooperating with the escapement wheel so that the wheel is timingly advanced as the magnet oscillates back and forth, a flywheel having a hub frictionally slidable on the shaft, a manually operated starting member having means for wipingly engaging the hub to initiate rotation of the magnetic escapement wheel, and indicator means coupled to the escapement shaft.
8. The combination as claimed in claim 7 in which the starting member is in the form of a pivoted lever having a tip which frictionally engages the hub with a wiping action, the lever including means for normally biasing the same out of engagement with the hub but manually movable into engagement therewith and with the biasing force serving to impulse the flywheeel forwardly when the wiper is manually released.
9. The combination as claimed in claim 1 in which the shaft has a single jeweled thrust bearing at the lower end.
10. In a clock construction the combination comprising a synethetic resin plate and a metallic plate horizontally spaced from one another, two vibrating members interposed between said plates for horizontal vibrating motion, a magnet mounted on the tip of one of said vibrating members for hOrizontal vibrating motion, a vertical escapement shaft having a magnetic escapement wheel and an inertia wheel mounted thereon in a horizontal plane, and having a worm mounted thereon for cooperation with a worm wheel, said escapement wheel having a zig-zag magnetic path for magnetic coupling with said vibrating magnet, and a regulator mounted on the metallic plate for regulating the frequency of vibration, the regulator being in the form of a small permanent magnet arranged in the vicinity of one of the vibrating members and having a screw threaded in the metallic plate for adjustably positioning the permanent magnet toward and away from the one vibrating member.
11. The combination as claimed in claim 10 further comprising: a time gear wheel disposed in a vertical plane and coupled to the worm wheel, said gear wheel having a regulator shaft rigidly fixed to its center and extending horizontally from and perpendicular to said vertical plane a distance far enough to provide access to said shaft, thereby providing means for adjusting said time gear wheel to a reference point.
12. The combination as claimed in claim 10 further comprising: a time gear wheel disposed in a vertical plane and coupled to the worm wheel, said time wheel having gear teeth disposed annularly with respect to the gear wheel and extending perpendicularly from said vertical plane; a vertically extending regulator shaft having a horizontally disposed gear wheel at one end for coupling to the annular gear teeth, the other end of said shaft extending a sufficient distance to provide access to it, thereby providing means for adjusting said time gear wheel to a reference point.
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