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91. 发明专利

GB191203966A Apparatus for the Operation of Electrical Clocks by Electric Waves. 未知
公开(公告)号：GB191203966A
公开(公告)日：1912-10-03
申请号：GB191203966D
申请日：1912-02-16
申请人： SCHNEIDER FERDINAND
发明人： SCHNEIDER FERDINAND
IPC分类号： G04R20/00 , G04R40/02
摘要： 3966. Schneider, F. Feb. 16. Electric clocks.-In apparatus for the operation of a system of clocks by electro-magnetic waves, the receiver, which is controlled by waves emitted by a transmitter operated by a standard clock, is designed to possess great sensitiveness, and comprises a coherer in circuit with a secondary electric clock and an independently-driven clock which periodically effects decoherence. Normally, a circuit through the coherer 48, a secondary clock 43, and an electromagnet 37 is closed, and, the armature 30 being attracted, a pivoted stop-lever 27, 26 is held away from the balance 24 of a clock C. A wheel 16 in the clock-train has a series of pins 17 on its face. and when one of these pins has raised and let fall a hammer 19, the hammer either directly or indirectly operates a clapper 52, which strikes the coherer-tube 48, shaking up the powder therein and also breaking the circuit at auxiliary contacts on which one end of the pivoted tube rests. The armature 30 is thereupon released, and the clock C is stopped by the arm 26. This is timed to occur just before the receipt of a wave impulse, and when the waves arrive, the coherer-circuit is again closed, advancing the secondary clock 43 and releasing the balance of the clock C by means of the armature 30. The coherer must be so constructed as to endure a continued passage of current, and to this end comprises two tubular electrodes 85, 86, Fig. 4, separated from each other by a perforated mica disk 87 of small thickness. The disk is perforated eccentrically, preferably with one or more countersunk or knife-edged holes, so that the sensitiveness can be adjusted by rotating the coherer about its longitudinal axis. Instead of stopping and starting the clock C by means of a special electro-magnet 37, the stop-lever 27, 26 may be connected to the armature 114 of the secondary clock 43, as shown in Fig. 8. Other secondary clocks may be actuated by the movement of the armature 30 between contacts 32, 33, Fig. 1. In the arrangement illustrated, the decohering-clock is driven by an automatically-wound short spring in a barrel 15, and its action is as follows : When the hammer 19 falls, it strikes a detent 53, Fig. 2, thereby releasing a spring-pressed contact-lever 55, and the circuit of an electro-magnet 3, 4 is closed through pivoted contacts 55, 59, 63 and a spark-preventing resistance 76. The armature 5 is thus attracted, winding up the driving-spring of the clock through a rod 8 and a pawl and ratchet 9, 12. At the same time, a projection 10 on the rod 8 depresses the clapper-spring 52. The circuit of the electromagnet 3, 4 is broken when a tappet 69 lifts the lever 55, whereupon the armature is turned by a spring 6, and the projection 10 is raised, allowing the clapper 52 to spring upwards and strike the coherer.

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