DE73850C - Electrical clock system with individually controlled slave clocks and central monitoring - Google Patents

Description

K PATENT OFFICE

IMPERIAL / k

The installation described below relates to central clock systems in which every clock has an independent movement and in certain periods of time by one by which the electricity sent to the Central Station is regulated.

In order to achieve the greatest possible reduction in line costs, a large number is used of clocks connected to branches on the same line. The clocks will but not permanently connected to the line, but switch the electromagnetic one themselves Apparatus which takes care of their regulation shortly before the point in time at which they are to be regulated into the line and shortly after the regulation, at different times, so that one of The current coming from the circle always comes only through the electromagnetic device of a single one Watch finds a way.

The accompanying drawing shows such a branched network with master clock and It is assumed that 40 slave clocks are connected to the line and each is corrected at intervals of 2 hours. Each slave clock has a wheel that changes in 2 hours turn around once, while sleeping once a contact lasting 1 to 2 minutes and thereby switching their electromagnetic device on to the line. These wheels are against the hands of the clock are offset in such a way that all clocks run correctly every three minutes one of the contacts is closed. The master clock makes 40 contacts in the 2 hours, each of which roughly coincides with that of a slave clock.

This arrangement has the advantage, first of all, that with the cheapest possible pipeline system the from, the power sent to the Central Station is not healed, but only for use in a watch comes and can therefore be chosen relatively weak. An even greater advantage is achieved by that this device enables an automatic control of all clocks in the central station.

The regulating mechanism of the individual clocks must either be arranged in such a way that it works in the Time of the beginning of the electric current coming from the central station or by the interruption of this current comes into effect. In the first case, in the Centrale exactly at certain time intervals (according to the previously selected example every 3 minutes) a current is closed, which comes about immediately if the clocks only show the permissible slight deviation, since in this one If one of the connected slave clocks has already switched to the line at the relevant time. the The current is then not interrupted by the central clock, but by it Slave clock, which switches itself off from the line at a certain time after regulation. So one observes in the Centrale

the time of the power interruption, so you can see from it whether the clock is after. Regulation has proceeded correctly or whether it was due to failure of the regulation mechanism going wrong. If you bring one of the clocks moved by the central clock to the Cehtrale Apparatus that registers exactly the times at which current from the central station into the line is flowing, you can tell at any time whether the entire clock system is in order or not whether a clock goes wrong or has stopped; for in these cases the current can, which the faulty clock in question should have regulated, either not at all in the correct one Time will come about, or it will not be interrupted at the right time will.

The simplest control device in this slide would be e.g. For example, a galvanoscope encased in the center of the line can be shown, on which it is possible to observe the times at which current flows into the line. If a registration device is to be used, an ordinary chronograph could be switched on, one spring of which brings time marks onto a strip of paper by connecting an electromagnet to the contacts of the central clock, while the other writes as long as the current flows into the line. It is, however, easier if, as assumed in the drawing, a strip of paper provided with a corresponding form is moved through the clock itself at a constant speed and, on this, through the electromagnetic armature of the control apparatus, is recorded when the line from Current flows through it.

The second case, as said above, is that of the cessation of the electric current puts the regulatory mechanism into action. In this case the current path is first in the Centrale, then closed on the slave clock and by observing the time in which current comes into being, you can see whether the slave clock in question correctly within the permissible limits is gone. In this case, too, an automatic registration can be made in the central office use which enables the weaker to convince himself at any moment whether any faults in the system are or have been present. '" When it can be seen from the registration that the course of the current begins at a certain time was more irregular, the word not only recognizes that there was a disturbance, but "also at what time it occurred, since the times are known to him which the individual clocks are to be regulated.

Claims (2)

Patent Claims: 1. A central clock system whose s / lmmtliclic Slave clocks self-styling movements hcsil / cn and in equal numbers by one electric currents coming from the center are corrected in such a way that every clock shortly before the point in time at which it is to be regulated, its regulation supplying electromagnetic device into a line branched from the central station to all clocks and switches off again shortly after the regulation, each at a different time, so that the one coming from the central station electric current regulates only one clock at a time. 2. Central clock systems in patent - claim i. described type, connected . with one switched into the common current path section of all individual circuits Device through which the current pulses used to regulate the individual clocks flow, and so on the times at which the individual electrical current impulses begin and end Permitted to observe or registered automatically, for the purpose of determining the course All clocks in the central station to be monitored and any malfunctions to be easily identified recognize. For this purpose ι sheet of drawings.