DE465224C - Electric pointer positioner for clocks - Google Patents

Description

Electric pointer positioning mechanism for clocks The invention relates on so-called pointer signal boxes, d. H. on devices operating in certain time periods Any errors that may have occurred on independently running auxiliary machines, regardless of in which direction they run, eliminate, namely to electrical ones Pointer interlockings, in which a motor (drive) is released from the control current surge and comes to a standstill again after the regulation. The invention now besleht that in the present case for a so-called radio clock the actuating force of a rotating electric motor is derived, whose circuit is radio-telegraphic is closed and interrupted after regulation has been carried out. The derivation happens here with the inclusion of a crank loop, which points to the pointer position dominant curve heart acts. The circuit is closed by the current surge directly or through the mediation of an electromagnet, while the interruption caused by the rotation of a disc, possibly with mediation of a magnet. is effected.

In the case of pointer readjustments, i. H. in devices through which a single-wire error intentionally generated in the corridor of the slave clock after certain ones have elapsed Periods of time is canceled, similar devices are known per se.

The drawing illustrates in fig. I and a, one example Embodiment of the invention in front view and top view.

Fig.3 shows a further embodiment in; front view.

Between the plates of the clockwork is a small electric motor m arranged, which .drives a disk by translating it into slow motion. At this Disk sits a Bolzennl, the m engages a longitudinal slot of the lever bi. This A lever forming a crank loop together with the wheel n also carries the pin Moderate the roller b, which is on the pointer shaft when the lever moves downwards seated heart curve a presses and thereby the leading or trailing minute hand corrects, This action takes place with one revolution of the disk n clockwise. After this rotation has been completed, a contact spring p falls, which, together with the Kontaktfedeno is switched into the circuit, in a cutout of the discs and interrupts the electricity. If the motor m starts up as a result of the control current surge and the disks start rotating, the contact spring p immediately attaches to the spring 49 pressed and thereby the circuit of the battery closed until the contact spring p after its revolution the disks fall back into their incision and the stream interrupts.

In the event that the vto-n external current impulse is only very brief is, and there is a risk that .the motor starts too little to cut the current between. To bring about contact lowers p and o is, as Fig. 3 illustrates, Another electromagnet switched on in the circuit and the contact p, io closed. If the contact on the magnet is now also closed by the control current surge, they will run the motor and the disks around until the spring p by collapsing into the short cutout of the discs interrupts the current of the magnet gin, which also interrupts the motor current will. Due to the momentum of the rotor, the disk runs so far that the spring p emerges again from the incision of the disk n and the contact p, jo again closes.

Claims (1)

Claim: Electric pointer setting mechanism for clocks, characterized in that the actuating force is derived from a rotating electric motor (m) with the activation of a crank loop (b, n) , the circuit of which is closed by the regd current surge directly or through the intermediary of an electromagnet (s) and by rotation a disc (s) is immediately interrupted by the intermediary of a magnet.