DE200560C - - Google Patents

Description

IMPERIAL

PATENT OFFICE.

PATENT LETTERING

- Yes 200560 CLASS 83 δ. GROUP

in Vienna.

Addendum to patent 188425 from September 20, 1905.

Patented in the German Empire on May 16, 1907. Longest duration: September 19, 1920.

By the patent 188425 a device for the operation of electrical clocks by means of electrical waves placed under protection, in which after response of the wave sensitive The antenna of the receiving device is switched off and only shortly before the end of the period for the operation or the apparatus Control of the clocks is switched off again during the selected period. This training and Activation of the antenna is achieved by in the receiving station a magnet switched on in the relay circuit, a magnet controlled by a pendulum Drive or another equivalent device is pulled up, which the antenna disconnects from the receiver during rest breaks and thereby makes operation against interference from external waves practical makes insensitive.

The novelty of the invention is that, in order to protect the receiving device from interference, not the antenna circuit but one of the local circuits, that is to say the slave clock circuit, is interrupted. The breaker influenced by the drives is then switched into the slave clock circuit, while the rest of the equipment remains the same.
In the accompanying drawing, the device is shown schematically in Fig. 1, in the same way as in the drawing of the main patent. The same reference letters have also been used again.

A is the antenna, C the coherer, jR the relay located in a local circuit L ^1. In this local circuit there is also the knocker K for the coherer and also an electromagnet M ¹ , the armature H of which carries a toothed sector J which acts on the gear D and the ratchet N connected to it. If the armature H is attracted, a resilient pawl X of the contact carrier T is lifted off its support j / -above through the nose u. T falls to its lowest position and the local ^{circuit Z, 2} for the slave clocks is closed. As a result, an electromagnet M ^{2 is} excited, which interrupts the local circuit L ² again by pulling on T. In doing so, X will come back to the support y and thereby T will be held again. The sector J is slowly returned to its original position by the spring F. This backward movement is regulated by a pendulum inhibition P, which acts on the now driven wheel L.

The movement of the tooth sector is also used to close and open contact B , which, however, is now not located in the antenna circuit, but in the slave clock circuit. By the weight W of the contact is rotatable about O

carrier V held against a stop Q. so that B is closed. When the armature H and the associated lever e move, the contact carrier V is rotated at the same time and B is interrupted. When J or e moves back, V will also go back and B will be closed. Of course, the two contacts B and the one sitting on T must work with one another in such a way that the slave clock circuit remains closed long enough for the slave clocks to be activated.

By this device it is now achieved that the auxiliary circuit immediately after Arrival of a wave interrupted and only again after a certain time is closed, while it used to be the antenna circuit that was used to avoid interference to prevent being interrupted and closed.

A circuit which has proven to be very advantageous is shown in FIG.

The contact B is here in a shunt of the relay circuit. In the same shunts is also in series with a solenoid M ^3, which acts on an armature ^s m; this carries the pawl u, which was articulated on the tooth sector / in the earlier embodiments. The winding magnet M ^x is located in a shunt of the slave clock circuit, but acts, as it did before, on the armature H of the toothed sector / in such a way that the drive is wound with the pendulum inhibition P.

The interruption of the contact B by means of the arm e of the armature H takes place in the same way as before.

This circuit works as follows:

If a pulse comes into the antenna A , the relay circuit is closed and thereby the knocker K moves independently of any interrupter and the electromagnet M ^{3 is} excited. The armature in ^{FIG. 3} is attracted and the pawl X is repelled by the pawl u from its support y , so that the lever T falls off and closes the contact connected to it. The slave clock circuit is therefore closed when the relay circuit has been closed. As a result, however, the electromagnet Ai ¹ is now also excited, which on the one hand opens contact B and on the other hand pulls the drive, which closes this contact shortly before the next pulse is due. As long as B is open, M ^s cannot be excited and, as a result, the slave clock circuit cannot be closed.

Instead of interrupting a local circuit, switch B can be used for the same purpose to switch on the resistance or to short-circuit one of the active parts, such as the relay, the switching magnet or the clock circuit.

Claims (2)

Patent Claims: 1. Facility to operate electrical. Scher clocks by electrical waves according to patent 188425, characterized in that the drive controlled by a pendulum (P) and wound up by an electromagnet or another similarly acting device does not switch off the antenna, but any of the local circuits of the receiving station (slave clock circuit, relay circuit or a shunt ) interrupts the operation between two current pulses during the rest period to protect against interference from external waves. to secure. 2. embodiment of the device according to claim 1, characterized marked ■ net that instead of interrupting the drive, the activation of a Resistance in one of the active circuits (relay, switching magnet, clock circuit) or causes a short circuit of the active parts during the rest pauses between two current pulses will. For this purpose 2 sheets of drawings. Berlin. Printed in the Reichsdruckerei.