US1145229A - Telegraph system. - Google Patents

Description

W. M. BRUCE, JR.

TELEGRAPH SYSTEM.

APPLICATION FILED NOV. 7, 1913 1,145,229. Patented July 6, 1915;

2 SHEETS-SHEET I- W. M. BRUCE, JR.

TELEGRAPH SYSTEM,

APPLICATION FILED NOV. 7, 1913.

1,145,229. Pa tented July 6, 1 15.

2 SHEETS-SHEET 2.

" brating the same to or from a moving tape I STATES AT WILLIAM M. BRUCE, In, orsPnIneFIELn, oIIIo, ASSIGNORTO THE UNITED TELE- GRAPI-L8c CABLE co v PA'NY, or SPRINGFIELD, orrro, A CORPORATION or OHIO.

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Application filed November 7, 1913.

' To all whom it may concern Be it known that I, WILLIAM M. BRUoE,

Jr., a citizen of the UnitedStates, residing at Springfield, in the county of Clark and. State of Ohio, have'invented' certain new and useful Improvements in Telegraph Systems, of which the following is a specification. I

My invention relates to improvements intelegraphy and particularly relates to a system, of telegraphing with alternating currents.

In the accompanying drawings, Figure 1' 1s a dlagrarn showing a system embodying my invention. Fig. 2*is a diagram showing a modification of the same. Llke parts are represented by similar characters of reference in the several views.

In the said drawings, a represents analternating current generator, one pole of which is grounded at g and the otherconnected by wire or conductorb tocontact 5". 0 is an ordinary telegraph key connected the generator d'as well as to themake andbreak impulses which may be made by the key 0. The relay f is provided with an armature spring 72, adapted to engage the forward contact h which is connected through wire k? to an electro-magnet k of a receiving and recording device R; thence by wire 72; to battery B and wire k to the'armature h.. This electro-magnet h? is also so constructed that'it will respond to the vibrations of the armature k. This electro-magnet k is'arranged to operate a recording pen ;0 by vit. The tape 25 is arranged to be moved by a suitable mechanism such as a clock circuit gearing as indicated at 3', 7'', 3' so as to move at a uniform speed when the mechanism is started so that the pen 7), as it is vibrated to and from the tape, will produce a series of impressions thereon. I

In order to control the movement ofthe tape from the relay f, I provide a branch circuit leading from the wire 71, by wire It to a slow or sluggish magnet is; thence by wire it to wire b so thatthe vibrations of the relay 7 will energize the magnet 76.

Specificationof Letters Patent.

Serial No. 799,812.

, raa aam g a v v This magnet 70, however, is made slowl or sluggish by the use of a;copperijacket-or otherwise so thatsolong-as'therelay f is operated in a fairly rapid mannenthemag I net 70 will remalnenergized andonly become,

deener'gized after the relayf has ceased to I operate for a definite interval of time.- :Thisl I magnet 70' is, by means of "an armature-7% and a pawl-lever k adapted to release the" clockmechanism j to cause the tape to move. j

If the tape, moving at a uniform speed,

' is impressed by the pen p at each movement, w

of the armature h in response to the 'alter-, Y

nations ofcurrent and these alternations are I sufficiently rapid, the result would be a series of small dots. If the-making'of these: dots is interrupted by interrupting the current,

a space would occur and these interruptions, together with the dots, would makelongf and short groups or a series of dots repremade in the usual dots and dashes of an ordinary recording instrument, I arrange the travel of'the tape in a given ratio to the alternations of thecurrent and I also make the pen 1) of a .suflicient length in therdirection of the travel of the .tapeso that; the? result willbeagseries of short and long dashes instead of groups ofsmall dots.

For illustration in using an ordinary sixf teen-cycle current, the armature hwill vi-' p brate thirty-two times nergsecond whichwill se'ntingthe ordinary Morse alphabet! 1111- I order, however, that the alphabet may be.-

cause the pen 1) to vibrate a similar number w k of times. In such case, I arrange the tape to travel'at the rate ofvan inch per fsecond which would make, by the alternations of the current,-thirty-two dots to each inch: ofv tape whichwould be separatedby asimilar I number of'spaces, a dot-and space [occupying a thirty+second of aninch. Now, in,

order that these dots may make a continu y v one line in the event that the armature vibrates in response to the alternationsfofthe currentonly, I makethe end of the pen p of a suflicient length in -the direction-0f the travelof the tapeso that at eachimpres i sion, the back edge of the pen would engage the back of theprevious.simpressionand I thus make a continuous line. Then, manipulating the key 0 accordance Wltll the well-known Morse or other alphabet, the if result would be a series of short and long dashes separated by the usual spaces in ex- I act accordance with the alphabetadopted.

' OFFIC, j

By using the slow magnet is, which will be energized whenever the circuit is closed at the armature h but shall remain energized allow the pawl lever 70 to engage the tapeoperating mechanism and stop the same. In Fig, 2, I have shown a modification in which the relay f, through its armature it, operates an electro-magnet a which controls a vibrating lever Z operating in a toothed Wheel mwhich in turn vibrates a lever 41 carrying a pen 2? which operates on a tape 25, in a manner already described. Ihe toothed wheel m may be operated by any suitable mechanism such as a clock mechanism or otherwise, the toothed lever Z being formed at the top with arms Z and Z to produce an escapement device similar to an ordinary clock mechanism. The tape IE will be arranged to move, as before described, in connection with the pen 2?, and the vibrations of the lever Z, in response to the relay f, will cause a. succession of dots and dashes and spaces on the tape t, as before described. It is obvious that the same arrangement of the slow magnet for stopping and starting the operation of the tape mechanism may be employed if desired.

An interrupted current having interruptionsof substantially the same frequency as the frequency of an alternating current may be used instead of an alternating current under some circumstances with fairly good results, and, where an alternating current is described, it is intended to cover either alternating or interrupted current.

Having thus described my invention, I claim:

1. In a telegraph system having a relay in circuit with an alternating current and adapted to respond to the alternations as well as the interruptions of said current, a local circuit controlled by said relay and an ele'ctromagnet operating in response to said relay, a recording device controlled by said electro -ma-gnet embodying a tape whose movement is arranged in ratio to the alternations of said current, and a marking de vice adapted to vibrate in response to the alternations and produce a continuous mark on said tape and by interruptions in said Copies of this patent may be obtained for current make long and short dashes and spaces, as described.

2. In a telegraph system, a relay in circuit with an alternating current supply, a circuit breaker and condenser, said relay being adapted to be operated by the alternations of said current as well as the interruptions therein, a local circuit lincluding a magnet controlled by said relay} a recording device operated by said electro magnet embodying a tape, means for moving said tape and a slow magnet also operated by said relay adapted to be energized and remain energized so long as said relay is operated, and means controlled. by said slow magnet to stop and start said tape, as specified.

3. In a telegraph system for alternating currents embodying a relay which responds to the alternations as well as to the interruptions of said current, a local circuit having an electro-magnet controlled by said relay, a recording device operated in part by said electro-magnet and in part by other operating mechanism and a magnet also in circuit with said relay adapted to be energized and remain energized while said relay is operating in fairly rapid succession, and means controlled by said magnet for starting'and stopping said mechariism in said recording device.

4c. In a telegraph system, a %ource of alternating current supply, a CL rrent interrupter and a relay in circuit with said current supply, said relay being constructed to respond to the alternations of current as well as to interruptions therein, a recording device controlled by said relay consisting in part of a marking instrument adapted to vibrate in response to the alternations and in part of a moving surface against which said marking device operates, the movement of said surface and the length of the marking instrument being so proportioned that in the ordinary vibrations from the alternations of the current the marking instrument will close the spaces between the successive impressions thus making a continuous line and leave spaces between the said impressions in response to the interruptions of the current.

In testimony whereof, I have hereunto set my hand this 30th day ofl October, 1913.

WILLIAM M. BRUCE, JR.

Witnesses:

CHAs. I. WELCH, ESTHER E. PFEIFER.

five cents each, by addressing the Commissioner of Patents,

Washington, D. C.

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