US848849A - Telegraphy. - Google Patents

Description

PATENTED APR. 2, 1 907. W. P. PHILLIPS. TELEGRAPHY. APPLICATION FILED JULY 27, 1904.

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PATENTBD APR. 2, 1907.

W. P. PHILLIPS.

TELEGRAPHY.

APPLICATION FILED JULY z 4 SHEETS-SHEET 2.

No. 84.849. PATBNTED APR. 2, 1907.

W. P. PHILLIPS. TELEGRAPHY.

APPLICATION FILED JULY 27, 1904.

4 SHEETS-SHEET 4.

UNITED sTATEs PATENT oEEIoE.

WALTER P. PHILLIPS, OF NFlW YORK, N. Y.

'TELEGRAPHY.

- `Spec'cation of Letters Patent.

Patented April 2, 1907.

Application filed July 27, 1904. Serial No. 218,434.

To (all whom it may concern."

Be it known that I, WALTER P. PHILLIPS, a citizen of the United States, residing atl New York, in the countv and State of New York, and in the borough of Manhattan, have invented certain new and useful Improvements in Telegraphy, of which the fol owing is a peciiication, reference bein had to the rawings accompanying and orming a part of the same.

The invention subject of my present ap lication is an improvement in systems of te egrapliy, more particularly such as set forth in United States Patent to Roderick H. Weiny, No. 578,156, dated March 2, 1897,. in lwhich the messages to be transmitted are iirst recorded at the sending-station by 'an a aratus operated by an ordinary key, w ch embosses the messages in Morse characters on a tape. I This tape is then run through a suitable transmltter, by means of which the signals are sent over the line to a second embossing apparatus, by which the record is reproduced on a similar tape. This latter tape is then passed through a 'second instrument similar to the transmitter or divided into sections and used for operatinga number of such instruments, which in their turn o erate a sounder or sounders from which t e Inessages may be read.l

This s stem, designed to meet the requirements o' the ractical operation of long circuits, particullarly those which are occasionally overcrowded, enables several Morse operators at a sending-station to record at a comparatively slow rate a large number of messfges which may be transmitted and recorde with Great rapidity and reproduced at any desired slower speed at the receiving-station, where they may be read by sound and transcribed by the ordinary operator. The most important consideration 1n such a system is evidently, there-fore, the provision of means for the rapid transmission and accurate recording of the messages in Morse characters on a tape at the sending and receiving stations, but more es ecially at the latter, and to secure this resu t is the special object of my present invention.

The nature of the improvements which l have devised for carrying out the invention will be understood by reference to the accompanying drawings, in which- Figure 1 is a plan view of my improved embossing lpparatus. Fig. 2is anend view ol' the same. ig. 3 is a central vertical section of an improved tape-holding spool or reel. Fig. 4 is a plan view of the instrument for transmitting the characters from an embossed tape to line or to a local sounder. Fig. 5 is a crosssection of Fig. 4 adjacent to the vibrating contact-tongue 37. Fig. 6 is a diagramgo'f the circuit connections of the embossing or recording apparatus, and Fig. 7 is a view illustrating the manner of using the embossed matrix in the operation of the transmitter.

Referring to Fig. 1, 2 designates aspool, carrying a tape 1. The latter is led around an idler 3, to and around a grooved roller 4, under a resser-roller 5, and thence to a takeup spoo or winding-reel 6. A spring-actu- I to disengage it from the latter when the impressions are being made.

traveling The stylus 8 is mounted onl the system of armatures 9 10 of the electromaanets 11 12, by the alternate ener ization oli which itis advanced and retracte and so caused to emboss the Morse characters in the'tape along the central'line of the latter immediately over the circular groove in roller 4. v

The armatures 9 10, facing the opposite ends ofthe cores of magnets 11 12, are rigidly "connected by a bar 13 and supported by Hat springs 14 15, which are preferably slightly bowed toward the magnet-poles and adjustably mounted with respect to the magnets on side bars 16. By this means great sensitiveness and quick action are secured and exact and permanent adjustment readily and easily effected.

The two magnets l1 12 are adapted to be alternately energized by a local battery 17, controlled by a relay or pivoted-contact armature lever 19, retracted from the magnet by a spring 20 and arranged to vibrate between contact- stops 21 and 22. Normally the lever 19 is held by its spring 20- in position to close thecircuit of the battery 17 through-the upper magnet or coils 1], which when energized retracts the stylus 8, so that its end lies just above the surface of the tape 1. When the circuit of the magnet 18 is closed, the lever 19 is drawn over into contact with the stop 22, and this interrupts y line magnet 18 and a IOC the circuit of magnets 11 and closes the circuit throu h magnet 12, energizing the latter, and thus orcing the stylus upward, making in the tape an indentation the length of which depends upon the rate of movement of the paper and the duration of the activity of magnet 18. f

VVhile the embossed record at the sendin station may'be produced by any suitable apparatus, I prefer to use at both the sending and receiving stations the special device above described. The tape which receives the impressions is continuously fed by a small motor 23, engaging with the roller 4, through suitable gears and also with the winding-reel 6, the latter connection being through friction devices which permit the reel to slip, so as not to put too great a strain on the tape.

The magnet 18 at the sending-station is operated by a Morse key, but at the receivingstation it is operated by the impulses of current transmitted over the line.

It will be observed that a movement of the armatures 9 10 in either direction beyond very narrow limits subjects the springs 14 15 to a tension which acts to return the armatures to a position of symmetry with respect to the two magnets, so that the attractive effect of either magnet in overcoming the inertia of the armature system will be aided by the springs. To still further assist this action and render the operation of the magnets themselves quicker than they would otherwise be if the energizing effect of the current from the battery 17 alone were depended upon, I combine with the magnets 11 12 a reactance coil or coils constituting what is commonly known as a booster, which on the separation of the lever from either of its contacts 21 or 22 will instantly discharge through the magnets, the direction of the dise charge being such as to neutralize the residual magnetism of the previously active magnet and to impart to the other a polarity the same as that which will be imparted by the battery-current when the circuit Vthrough the opposite stop is completed. This device consists of a coil or pair of coils 24 25, connected in series preferably surrounding a laminated iron core'26 and having its terminals connected, respectively, to the terminals of the magnets 11 and 12 and also with the two contact-points 21- and 22. A local battery 27, with its poles opposing those of battery 17, is connected by one pole to the contact-lever 19 and by the other pole to the middle point of the reactance-coil or to the wire connecting the coils 24 and 25 when two of the latter are used.

When the lever 19 is in contact with the stop 21, the upper magnet 11, as has been explained, will be energized; but by the same connections the battery 27 will be closed, through the reactance-coil 24, and will charge the latter. The instant that lever 19 leaves the stop 21 the coil 24 will dischargeback through the magnets 11 and 12, neutralizing the residual magnetism in 11 and energizing magnet 12 with the same polarity as that which it will subsequently receive by the current from battery 17 when the contact-lever 19 engages stop 22. In this way the action of battery 17 is assisted, and a quicker and more certain action of the armature system and stylus secured.

As batteries 17 and 27 are in opposition, the currents from 'neither can follow any other paths than those indicated above. 1t will be understood that the magnets 11 and 12, which are shown as having their respective coils connected in multiple, may have these coils in series.

When the desired number of messages have been recorded in the manner above described, the matrix or embossed tape is removed from the recording apparatus and run through a transmitter. The instrument which I employ for this purpose is shown inI Figs. 4 and 5.

The roll of tape removed from the receiving-spool of the embossin apparatus is placed upon the spool 29 an its end carried around rollers 30 and 31 and thence to any suitable device or receptacle for receiving it. The roller 30 is carried by a lever 32, which is pivoted at 34`and held in proper position against a stud 35 by a spring 33. An adjusting-screw 36 is employed to regulate the distance of the roller 30 from the end of the conl tact-tongue 37, which is vibrated by the embossed characters on the tape. A presserroll 38, also connected with spring 33,bears upon the tape and keeps it firmly in contact with roller 31.

To facilitate the insertion of the tape, a lever 39, with a cam 40 at its end, is ivoted to the frame of the instrument an arranged when turned, as shown in dotted lines, to force the roller 38 away from roller 31 and roller 30 away from the end of the tongue 37.

The relations of the embossed tape and the contact-tongue are more fully illustrated lin Fig. 6. Normally the end of the tongue 37 extends slightly beyond the flat surface of the ta e, so that as the latter is drawn throng ,the instrument the depressed portions correspondingto the dots and dashes will leave the tongue free to move over into contact with a stop 41 while the flat portions, corresponding to the spaces between letters, will engage the tongue and force it over into contact with stop 42. In this way current impulses of opposite directions may be sent to line from a battery, which is often an advantage, as it enables the transmitter to operate polarized relays.

To facilitate the removal of the tape from the instrument after it has been wound up, I

i employ a series vof pins y43, which are set in ICC IOS

the plate 44. The latter turns loosely on the spindle 45, but is held in frictional engagement therewith by an arm 46, carrying a screw 47, that bearsy upon the edge of the plate 44.

Over the pins is placed a thin plate 48, carrying a hollow standard 49, that fits over the spindle 45 and serves as a handle to lift the plate 48. The tape is wound around the pins 43, and when the roll is completed or of sufficient size it is lifted off from the pins by raising the plate 48.

It will be understood that when the desired number of messages have been recorded at the sending-station the roll of ta eis transferred to the transmitter and run t ough the latter. The tape may be run through backward or rewound before it is passed through;

. but in either event the record is exactly reproduced at'the receiving-station, where it may be run through a transmitter or divided up and run through several transmitters and read from a sounder or Sounders and transscribed in the usual way. 'In this way a very much larger volume of business can be carried on over a circuit, whether single or multiplex, by ordinary Morse operators than would be possible under ordinary workingconditions.

Having now described my invention, what I claim is- 1. A telegraphic recording instrument comprising in combination, two op ositelyacting magnets, armatures facing t e oles of said magnets and rigidly connecte together, a recording device carried by lthe armatures, lat springs supporting said armatures and adjustable sup orts for the opposite ends of the same, wlliereby said springs tend to maintain the armatures in a position of symmetry with respect to the magnets, as set forth.

2. A telegraphic instrument comprising in combination two oppositely-acting magnets, an armature' adapted to be reciprocated thereby, a reactance-coil connected with said magnets, a source of current for`energizing the magnets and for charging the reactancecoil and circuit-controlling devices for alternately energizing the magnets and directing the discharge of the reactance-coil through the same, as and for the purpose set forth.

3. A telegraphic instrument comprising in combination two oppositely-acting magnets, an armature adapted 4to be reciprocated thereby, a reactance-coil connected with said magnets, a source of current for energizing the magnets, a source of current for charging the reactance-coil, and circuit-controlling devices for directing the current from the firstnamed source through the two magnets alternately, and discharging the reactance-coil through the magnets at the instant of the interruption of the current through either, as and for the purpose set forth.

4. In a telegraphic instrument the combi- .nation with two oppositely-acting ma nets .of a source of current, a circuit-controller for directing the current through the magnets alternately, a reactance-coil in series with the two magnets, a source of current for charging the same, one pole being connected to the middle point of the reactance-coil, and the other to the contact-lever of the circuit-controller, but in o position to the other source, whereby one-ha f of the reactance-coil will be in circuit with its sourcewhile either magnet is energized, but permitted to discharge through the magnets when the energizingcurrent is interrupted, as set forth.

6. In a telegraphic recording instrument the combination with two oppositely-acting magnets, rigidly-connected armatures, and flat springs supporting the same in a position of symmetry with respect to the poles of the Ina nets, of means for alternately energizing sai magnets, a reactance-coil in series therewith, means for charging the same, and directing the discharge through the magnets at the instant of the interruption of current through either in a direction to neutralize the residual magnetism ofthe one and imp art the proper polarity to the other for the reciprocation of the armatures, as set forth.

7 A telegra hic recording instrument comprising in com ination two oppositely-directed ma net-poles, armatures acing said poles and aapted to be reciprocated by the alternate attractive action thereof, a recording device carried by the armatures, flat springs supporting said armatures and adjustable supports or the opposite ends of the same, whereby said springs tend to maintain the armatures in a respect to the po es, as set forth.

v WALTER P. PHILLIPS. Witnesses:

THos. J. BYRNEs. S. S. DUNHAM.

osition of symmetry, with IOO IOS

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