US1153937A - Transmitting telegraph-relay. - Google Patents

Description

T. H. MAINS.

TRANSMITTING TELEGRAPH RELAY.

APPLICATION FILED SEPT.22, 1913.

1,153,937. PatentedSept. 21, 1915.

INVENTOR 7171: Mains.

WITNE88ES Kama-4. E

THANE n. MAINS, or DALLAS, TEXAS.

TRANSMITTING TELEGRAPH-RELAY.

Specification of Letterslatent.

Patented Sept. 21, 1915.

Application filed September 22, 1913. Serial No. 791,057.

T 0 all whom it may concern: 7 p

Be it known that I, THANE H. MAINS, a citizen of the United States, residing at 1207 South Harwood street, Dallas, in the county of Dallas and State of Texas, have invented certain new and useful Improve-.

ments in Transmitting Telegraph-Relays, of which the following is a specification.

My invention relates to a transmitting telegraph relay. In the polar system of telegraphy, during the interval in which the tongue of a transmitting relay passes from one contact to the other, reversing the line current, the distant receiving relay will be subjected to the influence of currents that may be induced from adjacent wires, or created by certain atmospheric conditions. To avoid the influence of such disturbances on the receiving relay, it is desirable to employ a transmitting relay that will operate with a maximum rapidity. It is well known to those familiar with this art that the polarized armature type of relay possesses the most'rapid and positive action.

The object of my invention, therefore is to provide a transmitting'telegraph relay having a polarized armature, thereby avoiding the use of springs and securing all the advantages of a polarized relay.

Another. object is to provide a telegraph relay of the character described, that may be used as apart of the ordinary local transmission, equipment, necessitating no additional apparatus.

Finally, the object of my invention is to provide a device of the character described, that will be'strong, durable, simple and efficient and comparatively easy to construct,

and also one that will not be'likely toget out i of working order.

' With these and other various objects in view, my invention has relation to certain novel features of construction and opera tion, an example of which is described in the following specification and illustrated in the accompanying drawing, wherein:

Figure 1 is a top view of my relay. Fig. 2 is a view of the same in side elevation. Fig. 3 is a view of the same in longitudinal vertical section, the section being taken upon the line XX of Fig. 1. Fig. 4 is a view of the same in transverse, vertical section, the section being taken upon the line YY of Fig. 2. Fig. 5 is a diagram of the electrical connections.

Referring now more particularly to the drawing wherein like reference characters designate similar parts in all the figures, the numeral 1 denotes the base of my relay, which will preferably be formed of an insulating material. To opposite edges of the base 1, there are secured the lower edges of two vertical rectangular plates 2, preferably formed of a non-magnetic metal. Between said plates are transversely mounted the cores 3 of two field magnets A and B, the pole pieces 4 of said cores being preferably secured thereto by cap-screws 5 which serve also to give the cores a'rigid relation with the plates 2. The core 5 of a polarized magnet C is mounted preferably beneath the cores 3 and equidistant from the same, its pole pieces 6 being extended upwardly. Just above the magnet C is mounted a spindle 7 having its extremities respectively journaled in the plates 2. Upon the end portions of this spindle are mounted the up right armature members 8, the upper ends of the pole pieces 6 being slightly recessed to receive the lower ends of the members 8. The upper ends of the members 8 project between the pole pieces 4, being normally attracted to one pair thereof. At the center of the spindle 7 is mounted fast the lower end of a substantially vertical non-magnetic tongue 9, having a pin. 10 mounted fast in its upper end, and projecting equally at each side of the same. The upper end of the tongue 9 projects between two plates 12 surmounted upon the plates 2. Upon each of the plates 2, a contact post 13 is mounted, and in the two posts 13 are mounted alined screws 14, between the adjacent ends of which the pin 10 is disposed. The screws 14: will be so adjusted with respect to the pin 10 as to limit the tongue 9 and spindle carrying the same to a very slight angular dis placement in either direction.

The winding of the magnets A, B and C, and the electrical connections between said windings will now be explained. The magnet A is differentially wound as indicated at 15 and 16, the Winding 15 being in series with the winding 17 of the magnet C, and the winding 16 being in series with the winding 18 of the magnet B. A normally open key 19 is also included in the series circuit containing the windings 16 and 18. The two series circuits 15, 17 and 16, 18 are connected in parallel in a local circuit 20, y

energized by a battery or other source of electro-motive force. The differential windings of the magnet A are so designed that their magnetic efi'ects neutralize each other when both windings are energized. The windings 15 and 17 are designed when energized to form magnets of opposite polarity, so that the armature members 8 will be very strongly attracted to the polepieces of the magnet A when the key 19 is open. \Vhen, however, the key 19 is closed, both windings of the magnet A and the windings of both magnets B and C are energized. Since the coil B is wound to produce a polarity opposite to that produced by the magnet C, and since the two windings of the coil A neutralize each other as regards magnetic eflect, when energized, it is apparent that when the key 19 is closed, the pole-pieces of the magnet A will cease to attract the armature members 8, and said members will now be strongly attracted to the pole pieces of the magnet B.

The windings of the magnets A, B and C, which have been so far described, will create a magnetic attraction between the poles of the magnets A and B and the armature members 8, but magnetic repulsion is not utilized to actuate the armature members. In order to make the movement of the armature members more rapid and positive, the coils A and B are further wound to cause magnetic repulsion to act upon the said members. The additional winding of the magnet B is a differential one, as indicated at 21 and 22, the'coil 22 being in series with the winding 17 of the magnet C and constantly energized. The coil 21 is in series with the additional winding 23 of the magnet A, and its circuit includes the key 19. The coils 21 and 22 are similar to the coils 15 and 16, being adapted to neutralize each other when both energized. The electrical connections are such that when the key 19 is open, the coil 22 gives the magnet B the same polarity asthat of the magnet C, so that the armature members are repelled by the magnet B. When the switch 19 is closed, the two coils 21 and 22 neutralize each other as regards magnetic efiect, and the coil 23 gives the magnet A the same polarity as that of the magnet C, so that the magnet A repels the armature members. Thus it is seen that the magnet C has an unchanging polarity, while the magnets A and B are reversed in polarity each time the key 19 is closed or opened, the armature members being attracted by one of the magnets A and B when repelled by the other. As the key 19Vis closed and opened, the armature members shift between their limiting positions (establishing contact between the pin 10 and the screws 14) with a rapidity not obtain- Copies of this patent may be obtained for five cents each, by addressing the able in any existing types of relays. The line circuit (not shown) may be connected to "the members 14 and tongue 9 in the usual well known manner.

The invention is presented as including all such modifications and changes as properly come within the scope of the following claims.

What I claim is:

1. In a telegraph relay, the combination with a polarized magnet, of armature mem bers magnetized by the poles of said magnet and a pair of field magnets between which the armature members oscillate, one of the field-magnets being differentially wound, its coils being respectively in series with those of the polarized magnet and other field-magnet, and the two series circuits being in parallel with each other in another circuit.

2. In a telegraph relay, the combination with a polarized magnet, of armature members magnetized by the poles of said magnet, and a pair of field-magnets between which the armature members oscillate, one of the field magnets being differentially wound, its coils respectively being in series with those of the polarized magnet and other field-magnet, and two series circuits being in parallel with each other in another circuit, the polarity created by the polarized magnet winding being opposite to that created by the winding with which it is in series, and the polarity of the single wound field-magnet :being opposite to that of the polarized magnet. V

3. In a telegraph relay, the combination with a polarized magnet, of armature. members deriving polarity from said magnet, and a pair of field magnets between which the armature members oscillate, both field magnets being differentially wound, and each carrying also an additional winding, the coils of each differential winding being designed to neutralize each other as regards magnetic eflect when both are energized one coil of each diflerential winding being in circuit with the polarized magnet winding and the other coil of the differential winding of each field magnet being in series with the additional winding of the other field magnet, and a key included in the circuits last specified.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

THANE H. MAINS.

Witnesses:

J. S. MURRAY, S. R. HICKMAN.

Commissioner of Patents,

Washington. D. C.

Images