US1247940A - Telegraphy. - Google Patents

Description

P. B. DELANY.

TELEGRAPHY APPLICTI-0N FILED NOV. 28| 14916. n

P@tnte Nov. 27, 19M

2 SHEETS-SHEET L 23h/venin@ P. B. DELANYl TELEGRAPHY.

APPLICATION FILED NOV. 28,19l6. t @@'rlfk Patented Nov. 27, 1917.

2 SHEETS-SHEET 2.

'or receiver for such signals adaptable for PATRICK IB. DELANY, 0F SOUTH ORANGE, NEW JERSEY.

TELEGRAPHY.

Application med November 2s, 191e.

To all whom t may concern.'

Be it known that I, PATRICK B. DELANY, a citizen of the United States, residing at South Orange, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Telegraphy, of which the following is a specification. his invention relates broadly to the art of transmitting and receiving telegraphic signals, and more particularly to a sounder' use with either the ordinary Morse telegraph systems, or with wireless systems.

he principal object of the present invention is to provide a sounder or receiver which may be used to register transmitted signal units in the form in which they are transmitted, or to register each individual transmitted signal unit by vibrations sustained throughout the period allotted to each such unit.

A further object ot' my invention is to provide a sounder of the nature referred to which shall have the means controlling the production of the sustained vibrations so constructed that it may be applied as an attachment to Sounders of the kind ordinarily used. l Y

A still further object of this invention is to provide a main line receiver and a local receiver or sounder at the receiving station which are so connected that the operation of' one may be controlled by the operation of the other, in such manner as to produce sustained vibrations in one of the receiving elements.

Another object ot' the invention is to provide switches in the receiving circuit by means of which the local receiver or sounder may be so connected in circuit as to operate either in the usual manner, or in the improved inanner above referred to.

In the accompanying drawings:

Figure l is a perspective view of one form ot' my improved sounder or receiver. 'p

F ig. 2 is a side view of my sounder showing diagrammatically the circuit connections therefor.

Fig. 3 is a diagjammatic view of the preferred electrical. connections.

Fig. et is a diagrammatic view partly in detail and partly in section showing a modiiied receiving circuit.

Fig. 5 is a diagrammatic view of a receiving circuit in which the sounder armature controls in part its own vibration.

Specification of Letters Patent.

Patented Nov.. 27,1917..

SerialNo. 133,852.

Fig. 6 is a diagrammatic view of a receiving circuit in which the relay or main line receiver armature controls the operation of the sounder or local receiver armature to produce either sustained vibration thereof, or operation, in substantial synchronism with the sending key.

F ig. 'r'V is a diagrammatic view of a receiving circuit in which the operation of the relay and sounder may both be controlled use for receiving or wireless teleit is customary to employ a an armature which is drawn down against its anvil upon the closing'of the sending circuit, and which is released and drawn upwardly by a spring or the likeupon the breaking of such circ-uit. As is well known, the majority of Morse operators are accustomed to receiving from thev ordinary sounder which gives but a single stroke foradoter dash, the only difference being in the greater lapse of time between the down stroke and the up stroke in the case of the dash, and therefore they cannot ordinarily read wireless signals inA which method each dot or dash is a sustained note or buzz from beginning to end. The converse is also true, and a majority of wireless operators unaccustomed to the single stroke Morse signals are unable to read them. Ufith the improved* sounderV herein shown, the Morse operator may receive messages intended for him by simply closing a switch which may be provided for use in connection with the sounder, and thereby short circuit the mechanism which causes automatic vibrationof the sounder armature, and receive the message in the ordinary way. During spare moments he may, for practice, listen to the other messages passing over the line by opening the switch and thereby changing the movement of the lever from positive single strokes to automatic vibratory movements, which give the" sustained note or'buzz for each transmitted signal unit,such as a dot or dash. The character of'this note may he changed at will by adjustment of the contacts in the interrupt-ingsounder circuit, so thatk the .vibrations will approximately".l cor showing` arespond to any of the various rates of vibration produced in the wireless telephone receiver. As the amplitude of movement of the armature lever for Morse signals must, 5 for sake of loudness, be many times greater than the movement necessary to produce the note or'buzz corresponding to wireless signals, provision is made in this inventionfor accomplishing both methods without changing the adjustment of the limiting stops of the armature lever of the sounder, the movement or play of which is primarily regulated for the ordinary amplitude of the Morse Sounders, so that in Morse translation the sound does not differ from ordinary standard Morse Sounders. For Wireless signals, the interruptingcontact may be so regulated that the circuit of the sounder magnet is broken by the slightest movement possible of the armature lever from its upper stop, thereby causing automatic vibration within the smallest possible limits of movement and producing a very high pitched note, or by changing the adjustment of the interrupting contacts so as to permit of greater movement of the armature leven away from its upper stop before the circuit is broken, the movement of the armature lever vwill be through a greater amplitude and at a lesser rate, thereby producing a lower pitched note. It will be obvious that, by making suitable changes in the adjustment of the interrupting contact, the armature may be caused to vibrate either against the upper stop or against the lower one. The latter arrangement for purposes of practice would, at the beginning, be more helpful to the operator in transcription of wireless signals, as the initial blow of the lever would be given in the case of a dot or dash before the dash becomes a sustained note'for the remainder of its apportioned time.

This invention may extend in its scope of usefulness to receiving circuits employing a primary or main line receiver corresponding in function and operation to the Morse relay in ordinary telegraph circuits. rIhe primary or main line receiver may be of the telephone type, as shown for example in Fig. 4, with local contacts controlling the circuit of the sounder.

Referring more particularly to the drawings, I have shown a sounder 1 similar in many respects to the sounders ordinarily employed. rlhis sounder preferably comprises a pair of'suitable electro-magnets 2Y operating upon the armature L1 to draw the same downwardly against the anvil 5 when the circuit therethrough is closed by the of movement of the armature, I preferably provide the usual adjustable upper stop 6 and thelower stop 7. The armature may be supported in any desired manner, as for examrleby mee-,11S @tithe arch .support .81

` thumb nut 11.

V,provision of a spring main line relay. For controlling the limits i having adjustable sensitive bearings 9. For maintaining the armature normally against its upper stop, the support may be provided with a tension spring 10, the tension of which may be controlled at will Vby the My improvements in this connection reside more particularly in the member' 15 secured to and projecting fromthe rear of the armature f1, and carrying a contact 16 suitably connected thereto.V I also preferably provide a hook or lifter 17V which limits the downward movement of the contact 16 and also acts to lift the same upon operation of the armature. Any suitable means may be providedfor making contact with the spring 15, as any usual form of binding post 1S. The contact 16 in its lower position rests, against the adjustable Contact point 19 carried by a standard at the rear of the instrument and operable through the medium of the wheel 20. The sounder is also provided with suitable connectors A, B and C to which the circuits for the sounder are attached and which are adapted to receive the terminals from the main line relay. There is also used in connection with this sounder a suitable switch 24 adapted, upon its operation, to short circuit the automatic circuit breaking contact 16. j

By reference to Fig. 3, it will be, seen that with the switch 24 inpopen position and the main line relay R in closed position, as indicated in dotted lines, the circuitV for the sounder will be from the battery to the con- 100 nector A and thence through a wire 21 to the contact point 19, the contactI 16, the spring arm 15 to the binding vpost 18 and thence through the electromagnet 2 back to, the-connector C through a wire 22 and com- 105 pleting the circuit to the otherv side of the battery through the relay armature. It will be apparent that the circuit breaking contact 16 is in series at this time with the electromagnet circuit, so that as soon as the 110 armature is attracted lthe circuit will be broken by reason of the lifting of the contact 16, and the armature will be returned to its original .normal position through the operation ofl the tension or compression 115 spring. This operation will be rapidly repeated as long as the relay R is in closed position,'thereby .producing a sustained note or buzz similarl to the ordinary wireless signal. When it is desired to use the sounder for 120 registering4 .ordinary Morse signals, the switch 24 is moved to its closed dotted line position. V`With the relay in closed position, and t-he'switch in the position just described, the circuit will befrom the battery through 125 the wire 27, the switch 24, and the wire 26 to the electromagnet 2, and thence by the return wire 22 to the connector C and the battervthe circuit breaking mechanism bethe armaturev produces a singleA stroke for each signal transmitted.

It will thus be seen that I have provided an instrument which may be readily converted at will from one type of receiver into another merely by the operation of a suit a-ble switch member, thereby adapting the instrument for use by operators accustomed to the reading of diiferent types of instruments.

In using this invention in connection with a primary receiver R of the telephone type, as shown more particularly in Fig. 4, I preferably pro-vide a contact member 28 adjustable in relation to the receiver diaphragm by means of the thumb nut 29, the entire member beingsupported in a suitable bearing or bracket 30 carried by the receiver casing. This receiver, which may be designated as the primary or main line receiver, performs a function similar to and corresponding with the function performed by the ordinary Morse, relay, and closes the local circuit of the sounder S through the contact 28, the bearing 30, the connector 3l, and wire 32 to the sounder armature 34, and thence through the sounder to the wire 35, battery B and wire 36 to the connector 37' secured to the diaphragm of the receiver. Upon the receipt of a telegraphic signal unit the main line receiver diaphragm will move outwardly thereby completing the circuit above referred to. This will cause the armature of the sounder to be drawn inwardly which will in turn break the circuit, allowing the return of the armature. In this system also use is made of a vibratory action in the sounder armature for receiving the message.

It is not necessary for the main line receiver to make and break the local circuit of the sounder S at every vibration of the armature so long as the diaphragm responds to the open and closed positions of the operators sending key, without registration of the successive train ofimpulses which go to make up a signal unit. This operation will permit of a much more reliable adjustment between the diaphragm and the contact 28 than could be obtained if it were necessary to register allV the vibrationsof the diaphragm, and as the minimum movement of the armature lever o-f sounder S in its automatic vibration renders it very much more sensitive than if a. single movement sufficient for aud-ibility were necessary, a very sensitive system is provided. Furthermore, the breaks in the circuit at the point of contact of the armature 34 with contact C of the sounder telephone S relieve the diaphragm of the main line relay from the sticking or welding eiiect due to arcing upon the breaking of the local circuit.

Referring more particularly to the circuit shown diagrammatically in Fig. 5, upon the passage of current through the relay R2 due to the closed position of the senders key, the armature 38 will be attracted, against the action of its retaining spring, into electrical contact with the point 39 thereby closing the local circuit of the sounder S2. The sounder may be provided with a. shunt circuit 40 including a manually operable switch 4l so that the operation of the armature 44 of the sounder against the contact 4t2 will automatically short circuit the sounder circuit and according to its adjustment permit the armature. to seek its normal position under the influence of its operating spring. With the switch ll in closed position, the local sounder or receiver will operate to produce sustained vibrations throughout t-he period of time allowed to each signal unit. With the switch in open position the sounder will operate in its usual manner.

F ig. 6 shows a circuit very similar to the circuitI just described, with the exception of the position of the shunt circuit 40. It is here shown as adapted to be closed by the operation of the armature 38 of the relay R2 in such manner as to short circuit the relay, which will in turn cause the local circuit to be rapidly opened and closed, provided the switch 45 is in closed or dotted line position.

In Fig. 7, the relay armature 3S when attracted by the relay R2 closes the local cir cuit of thesounder S2 in the usual manner, thereby causing its armature let to be attracted against the contact 42. IVith the switch 46 in closed position as indicated in dotted lines, the operation of the sounder armat-ure will automatically short circuit the relay through the shunt circuit 402, thereby causing sustained vibrations to be registered by both of the instruments.

Fig. 8 illustrates diagrammatically a series of circuits controlling the operation of the relay sounder, which circuits embody the features of the individual circuits illustrated in Figs. 5, 6 and 7. Due to the arrangement of shunt circuits and switches as herein illustrated, it is possible to operate the system in such a manner that the sounder armature operates to short circuit itself as described in connection with Fig. 5; or the relay armature may operate to short circuit its own circuit, as fully set forth with reference to Fig. 6; or so that the sounder armature may operate to shunt the relay. Any of these conditions of operation may be brought about by closing the respective switch controlling the desired shunt circuit.

ith any one of the switches in closed position it will be apparent that sustained vibrations are given by the local receiver during the period of time allotted to each signal unit, while with the switches all in open positions the sounder operates in a manner equivalent to that of the ordinary Morse or telegraph sounder. With the instruments connected as here shown, I provide a resistance i7 to prevent short circuiting the local battery when the switch is closed.

In Fig. 9 I have illustrated a circuit in which the sounder armature il in its normal position constitutes part of the line circuit of the relay, the armature being connectedin series therewith through the wire 48 and the ground wire LIQ. Then the main line relay circuit is closed, the attraction of its armature 3S will close the local circuit of the sounder through the contact 39. The sounder armature will in turn be attracted away from the cont-act 50, thereby breaking the relay circuit. This operation will be rapidly repeated causing the sounder armature to vibrate.

Various changes may be made in the construction of the sounder herein shown, or in the arrangement ,of the various circuits without departing from the broader features of the invent-ion claimed.

What is claimed is:

l. A telegraph apparatus including a relay, adapted to receive transmitted messages, a sounder controlled by said relay and adapted to produce audible signals, and

means for causing the audible signal given by said sounder to either correspond in character with, or differentiate in character from, that received by the relay.

2. A telegraph apparatus comprising a relay adapted to receive transmitted signal units, in broken or unbroken form, a. sounder controlled by said relay, and means for causing said sounder to give said signal units either in broken or unbroken form irrespective of the manner of receiving the same by said relay.

3. In a telegraphic apparatus, a receiver for giving transmitted signal units in unbroken form, and means controlled by said receiver for causing the same to give sustained'vibrations for each signal unit.

4:. A telegraph apparatus comprising a main line receiver adapted to receive unbroken transmitted signal units, a local receiver comprising a telegraph sounder, and means for converting said unbroken signal units into rapidly interrupted signals at said sounder.

5. A telegraph apparatus comprising aA main line receiver, a local receiver, means for controlling either of said receivers by fthe other, and means for changing the character of signal given by either of said receivers.

6. In a telegraph apparatus, a telegraphv VCopies of this patent may De obtained for five cents each, by addressing the Washington, D. C.

sounder having an anvil, and means for causing said sounder to operate against the anvil to give distinctly diiferent types of signals.V

7 In a telegraph apparatus, a telegraph sounder adapted to receive transmitted signal units, an anvil, and means for causing said sounder to operate against the anvil to give distinct types of signals irrespective of the type of signal received.

8. In a telegraph apparatus, a telegraph sounder adapted to receive transmitted signal units, means for causing said sounder to said local receiver to either correspond with or differ in character from that received by the main line receiver. Y

l1. A sounder for telegraphic signals, comprising an armature, an anvil Vagainst which said armature may be operated, and a circuit breaker for modifying the operation of said armature against the anvil.

12. A sounder for telegraphic signals, comprising an armature, an anvil against which said armature may be operated, and a circuit breaker carried by said armature for modifying the operation of said armature against the anvil.

13. In a telegraph apparatus, a main line receiver, a local recorder controlled by said main-line receiver to record unbroken telegraphic signals, means controlled by said local recorderY for automatically converting said unbroken signals into vibratory signals, anda switch controlling the operation Vof said automatic means.

Vlet. A` sounder forA -telegraphic signals, comprising' an armature, an anvil against which oneY end of saidarmature may be operated, and a circuit breaker mounted on the opposite end of said armature for modifying the operation thereof against the anvil.

In testimony whereof, I have hereunto subscribed myzname. 1

'PATRICK B.'DELANY.

Commissioner of Patents,

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