DE583712C - A comparison clock consisting of a normal clock and a synchronous clock driven by the network for speed and power control - Google Patents

Description

Consists of a normal clock and a synchronous clock driven by the mains Comparison clock for speed and power control The invention relates to a a standard clock and a synchronous clock driven by the network, at which the time difference of these interconnected by a planetary gear Clocks as an impulse for speed and power control of prime movers for Drive of alternators is used. The deflection of the planetary gear axis is transmitted to a contactor, which supplies the fuel to the prime mover influenced by, for example, the speed adjustment motor of the governor switched on in one sense or the other and thus the socket load of the controller is changed.

In order to avoid with such control devices that with every pendulum swing of the normal clock, the axis of the planetary gear moves back and forth intermittently in undesirably the contact continually opens and closes, according to the Invention of the vibrations caused by the pendulum beats of the normal clock the planetary gear axle is damped by an elastic intermediate member and an oil brake transferred to the contactor for the machine control.

The subject of the invention is shown in the drawing in one embodiment illustrated. FIG. R shows a side view and FIG. 2 shows a plan view a comparison watch designed according to the invention.

The comparison clock consists of a clock a, which is powered by an alternating current network is driven, and a normal clock b, whose pendulum c, if necessary, by a Magnet d is synchronized by a master clock, not shown. The two Watches a and b are connected by a planetary gear e, the axis of which f remains at rest with the same rate of the two clocks, but otherwise down or at the top, depending on whether one clock is ahead or behind the other. The oscillating movement is transmitted to an electrical contactor g. The pendulum c is driven by the weight h, which is constantly drawn up by the motor a, because the planetary gear axis f by a return device, not shown in the steady state of the controller little up or down from the central position removed.

The clock a driven by the network moves, apart from the small frequency changes of the network with changing load, evenly. The planetary gear axis f will swing out stepwise up and down with each pendulum swing corresponding to half the pitch of the climbing gear and thus continuously open and close the contact g in an undesirable manner. To avoid this, a spring k is switched into the transmission linkage i from the planetary gear axis f to the contactor g. In addition, the movement of the linkage i is dampened by an oil brake l.

With this arrangement, the planetary gear axle will continue to exert vibrations, while the movement of the linkage i and the contactor g is strongly damped. The remaining oscillating movement is sufficient to render the friction in the joints of f, i and g harmless in a known manner and to influence the sensitivity of the device in a favorable manner.

Claims (1)

PATENT CLAIM: From a normal clock and one driven by the mains Synchronous clock Existing comparison clock with planetary gear for speed and power control of prime movers for driving alternating current generators, characterized in that, that the oscillations of the normal clock (b) caused by the pendulum beats Planetary gear axle (f) through an elastic intermediate member (k) and an oil brake (L) be transferred attenuated to the contactor (g) for the machine control.