Page:United States patent 1526308.pdf/2
| Patented Feb. 10, 1925. | No. 1,526,308. | |
United States Patent Office. August J. Koneck of New York, N. Y. Simultaneous Signaling and Receiving System. Application filed November 28, 1916. Serial No. 133,886 | ||
To all whom it may concern:
Be it known that I, August J. Kloneck, a citizen of the United States, and a resident of New York in the county of New York and State of New York, have invented certain new and useful Improvements in Simultaneous Signaling and Receiving Systems, of which the following is a specification.
This invention relates to systems for simultaneously transmitting and receiving electrical energy, particularly in radio telephony and telegraphy although the system may also be employed for wire or cable signaling.
The object of this invention is to provide a system of electrical circuits whereby a high power current may be transmitted and simultaneously a feeble signal current received without disturbing the apparatus for receiving.
Another object of the invention is to provide an additional selective tuning system for receiving to prevent disturbances of received signals by the same or other not wanted transmitting stations.
These and other allied objects are attained by the novel arrangement of electrical circuits and elements hereinafter described and illustrated in the accompanying drawings in which:
Figure 1 shows the arrangement of electrical circuits and a receiving transformer, the middle or neutral point of a coil thereof being connected to a transmitting apparatus, while the ends of said coil are in connection with serials or conductors which are shown extending in opposed horizontal directions. Figure 2 shows another independent system embodying a modified arrangement of electrical circuits and a receiving transformer, the latter having the middle point thereof in connection with one conductor which is shown as an aerial conductor and the ends of said transformer are connected to the transmitting apparatus. Figure 3 shows a station indicating at one terminal of a sending circuit the conductors as in Figure 1 connected to two aerials which are indicated as extending in opposite directions and form a receiving circuit through a receiving transformer. Figure 4 shows a modified form of a station with a ground circuit to one aerial and one balancing circuit of equal capacity and inductance. Figure 5 shows a station indicating at one terminal of a sending circuit another combination of connections for the conductors; one is an aerial and the other a line conductor. Figure 6 shows a transmitting apparatus having at one terminal a line circuit and an opposing balancing circuit.
In Figure 1, the numeral 1 represents a high frequency current generator of any suitable combination of elements, the one shown comprising a primary or secondary source of electrical current or a transformer 21, a condenser 22, and a spark gap 28 in circuit with a high frequency transformer 24, of which one terminal 2 is grounded at 2. The other terminal 3 is connected to a coil 4′ and 4″. The ends of said coil 4 are connected to two conductors 5 and 6, which may be aerials for radio signaling and extend for instance as shown in opposite directions or the conductors may be cable wires or a combination with a separately grounded balancing circuit. The latter will be more fully described in connection with Figures 3 to 6. The sending apparatus may include a transmitter 7 and condenser 3′.
It will be noted that a transmitting current from terminal 3 of the transmitting apparatus will flow in two opposed directions through coils 4′ and 4″ to two separate transmitting conductors 5 and 6 preventing an energizing of a resultant magnetic field upon a receiving transformer 8. A receiving current from another station, however, will flow in the direction from one conductor to the other, thus energizing said coils 4′ and 4″ and by said coils the receiving transformer 8. The receiving circuit consists preferably of said secondary coil 8 of said transformer, suitably connected to convenient receiving apparatus. I prefer however, to employ a selective tuning circuit for receiving, which consists of three tuning circuits and elements; for instance coil 11 is connected to the receiving apparatus and tuned thereto one of said coils, for instance coil 9, is tuned to a lower than the receiving frequency and another coil 10 is tuned to a higher frequency than that for the receiving apparatus. Selective circuits of similar appearance have been employed whereby currents of higher frequency on the receiving apparatus. But inasmuch as