US617891A - Telautograph - Google Patents

Description

Patnted Jan. l7, I899.

G. S. TIFFANY.

TELAUTUGBAFH. (Application filed Feb. 8, 1897. Renewed July 29, 1898.) (fin mm. a Sheets-"Sham l.

N0. 6l7,89l. Patented lam l7, IMQ.

I G. S. TIFFANY.

TELAUTOGBAPH. (Application filed Feb. 8, 1897. Renewed July 29, 1898.) (No Model.) 3 Sheets-Sheet 2.

M' HIH m. 6I7,B9|. Pa tented' m. H, new.

' G. S. TIFFANY.

TELAUTOGBAPH.

(Application filed Feb. 8, 1897. Renewed July 29,1898.) (No Model.) 1 I '3 Shuts-Sheet 3.

v IMiIIIk-IIIIIIHIF- "Unites stratus TIFFANY,

haircar- OF HIGHLAND PARK, ILLINOIS, ASSIGNOR TO THE TEUAUTOCRAPH COMPANY, OF RICHMOND, VIRGINIA.

FELAUTQGRAPFL $PECIFICAI'XON forming part of Letters Patent No. 61?,891, dated January 17, 1899. Application filed February 8, 1897. Renewed July 29, 1898. Serial No. 687,232. (No model.)

To all whom it may concern:

Be it known that 1, GEORGE S. TIFFANY, a citizen of the United States, residing at Highland Park, county or Lake, and State of Illinois, have invented certain new and useful Improvements in Telautographs, fully described and represented in the following specification and the accompanying drawings, forming a part of the same.

My invention consists in improvement-s upon telautographic instruments heretofore patented by me.

in my present instrument I propose to dis-- pense with the 'niechani'sm commonly employed outside of the escapeinent-magnet itself for propelling the receivingpen and to cause there-eeiving-pen to be moved by the action of the escapement-magnet, and I have devised an organization of circuits whereby the quickness of action of the escapeinentmagnet is increased. This arrangement of circuits is particularly useful where the escapement is propelled by the escapementmagnets, but is-of advantage in other con- 2 5 structions in order to quicken the action of the escapement.

Stated in general terms, it consists in providing a circuit-breaker on the armature of the escapcment-magnet which shall act to modify the circuits which control the escapement-niagnet after each movement of the armature, so that theensuing movement of the armature may be expedited. I

My invention also consists in improve 3 5 ments for bringing the receiving instrument into unison with the transmitting instrument by causing the receiving-pen to move'in a given direction under the impulse of currents actuating the escapement-magnets until such currents are inter upted at the point where the instrument reaches the unison position.

In the drawings forming a part of this specification, Figure l is a plan view, and Fig. 2

a side elevation, of the escapement and rea 5 versing magnets. Fig. 3 is a cross-section on the line 3 3 of Figs. 1 and 2. Fig. at is'a diagram of the circuit connections. Fig. 5 shows a modification.-

I will first describe the escapement and reversing mechanism, referring particularly to Figs. 1, 3, and i3. 'lhecsoaeeanent=magnetE is provided with a centrally-pivoted vibrating armature l, which carries insulated contactspring. 2 3,each adapted when the corresponding end of the armature 1 is released to come 5 5 into contact withone of two contacts 4 5. Fixed to the armature is a forked projection G, carrying spring-pawls 7 8, adapted to engage with the ratchet-wheel 9 and propel the same. The pawls are respectively provided with stops 10, carried by the arm G, and 11, fixed on the frame, which act to lock the pawls in the position in which they are thrown and prevent any further movement of the ratchetwheel under the inertia of the pen-arm. The ratchet-wheel 9 is loosely mounted upon a shaft 12 and connected thereto by a spring 13, the purpose of this spring connection being to'prevent abrupt jars from being transmitted from. the escapement to the receivingpen. Freely journaled on the shaft are two miter gear-Wheels 14 and 15, connected by a third wheel 16, journaled in the frame. Between the gear-wheels l4 and 15 are two triction disks 17 and 18, mounted upon a sleeve 19, which is keyed to the shaft. Attached to the upper gear-Wheel15 is a pen-drun1 20-, also freely revolving on shaft 12. These disks and wheels constitute together a reversingclutch; Thevertical position of the disks 17 and 18 is determined by a lever 21, to one end of which is attached the armature 22 of reversingmagnet H, the pull of the magnet on this armature being opposed by spring 23.

Attached to the frame is the contact-spring 24: and contact 2f, the use of which "will be hereinafter mentioned.

Referring now to Fi 4, the circuits will be explained. The interrupter is shown in diagram in the right-hand portion of the iig- 9o ure and is one of the usual forms of construction, the movement of the pen-arm in one direction sending impulses successively of one polarity to line and the movement of the penarm in the other direction sending impulses successively of the opposite polarity to line. These pulsations arrive at the receiving instrument over the line-wire Land at 26 divide, part passing through the non-inductive resistance R and part passing through polar roe relay F to binding-post 27 and to magnet D, which controls the escap'enrent. From bind self-induction of the magnet-coils most of the current will a; first pass through the branch in which the resistance is located, energizing the coil d more than the coil (1 and attracting the pivoted armature toward the coil d and causing its other end to recede from the coil (Z. in this position it is in contactwith the stop 31, and in its opposite position it is 'in'contact with stop 32. When the linecurrent is interrupted, the coils of relay F give forth an induced current, which passes through the coil din the same'direction as the line-current and through the coil (1' in the opposite direction to the line-currenhreversing the position of the armature .30 and causing it to return to the position shown in- Fig. 4:. In the latter position of the armature 30 a circuit will be closed from battery Z through switch S, wire a, heel-piece 33 of magnet D, armature 30, contact 32, wire a, coil e of magnet E, wire a to battery, drawing the armature 1 into the position shown in Fig. 4. In this position a circuit will be closed from battery Z through wire a coil e of magnet E, wire 5, contact 5, spring 3, wire I), con-' tact-stop 25, spring 24, wire b to battery. This circuit, however, being formed subsequentlyto the closingof the circuit throughcoil 8, does not disturb the position of the armature 1. When the armature 30 moves so as to fall against the contact-stop 31, the circuit previously passing, through the coil 6 is broken and the armature 1 turns on its pivot under the pull of the coil 2. This movement of the armature breaks the circuit of the coil 6' which passed through the spring 3 and contact 5; but at the same time another circuit for that coil is closed from battery Z through switch S, wire a, armature 30, stop 31, wire f, wire Z1, coil 6, and wire 71?, which continues to hold the armature attracted to ward the-coil c. Vhen the spring 2 strikes the contact 4, a circuit is closed from battcry Z through wire a coil 6, wire a, stop 4, spring :2, wire I)", contact 25, spring 2i, and wire U to battry. As the armature is now held attracted by the coil 6', its position is not affected, however, by the closing of this circuit through the coil e. The successive changes of position of the armature 1 cause the pawls 7 8 to drive the ratchet-wheel 9 for ward. It will be observed that on each more ment of the armature 30 the armature 1. is caused to more under the pull of an alreadycloscd circuit. Its movcmentls therefore efi'ectcd by the breaking oi the eircuitand dcmagnetization of the coil instead of by the closing of the circuit and the magnetization oi the coil, as is usual. As demagnetization eraser occupies less time than magnetization, an increased promptnessof movement in the ar mature 1 is effected. This is of especial importance where the escapeu entis operated by the armature so moved; but it is also capable of advantageous use in aninstru ment where in the escapement merely controls the application of a coutinuouspower or tension to the receiving-pen. l The reversal of movement is effected as follows: With one polarity of the line-current the armature will be in the position shown in Fig. 4, and when the polarity of the linecurrent is reversed, following the reversal in movement of the transmitting-pen,its position will be against the stop 34. In the latter position a circuit is closed from battery Z through switch S, wires (1 g, armature 33, stop 34, wire 9, magnet H, and wire g to battery, causing the magnet H to attract'its armature and raise disk 17 into contact with gear 15, reversing the direction of movement of the receiving-pen. When, therefore, the armature is in the position shown in Fig. 4, the position of the disks 17 and 18 will be controlled by the spring 23 and the receiving-penwill move in a corresponding direction, and when armature 33 is against the stop 34 the position of the disks 17 and 1-8 will be controlled by the magnet H and the movement of the receivingpen will be reversed.

In order to provide for bringing the receiving instrument into unison with the transmitting instrument, I attach a collar 35 to the pen-arm 36 in such a position as to come in contact with the spring 24 and move it away from'the contact 25. On each shifting of the paper the switch S is opened by the papershifting mechanism at the receiver. The controllingscircuits of the escapement-magnets are therefore interrupted, and the escape ment-magnets are free to move under the infiuence of the local circuits, before described, passing through the springs 2 8 and contacts at 5. These circuits will cause the armature 1 to vibrate, and consequently the ratchet wheel 9 to revolve, moving the pen-arm 36.

The organization of circuits is such that while the paper is being shifted the armature 33 is in the position shown in Fig. 4:, so that the disk 1o is in contact with the gear-wheel 14, which will causethe pen-arm to move to ward the left, as shown in Fig. i. This move ment will. be continued until the collar strikes against spring 24 and moves it away from contact 25, which is a position corrcspending to the position of the transmittingpen while the paper is being shifted.

In Fig. 5 I have shown a modification in which the movements of the armature are caused directly by the closing of the circuits through coils c (2, respectively, in the usual manner, but in which the springs 2 3 andcontact-stops 5 t act to open and close shunts passinthrough resistances r 1". lhus when the armature S0 rests against contact-point 31. the circuit is closed through \vircf, contact spring 3, wire b, coil e, battery Z, and

l wire a. As the armature 1-i s drawn up to the coil e the connection between spring 3 and .contact 5 is broken and the current shunted throughvresistance r. The ,circuit connections between resistance r, contact-point 4, and spring 2 are similar, so that after each movement of the armature 1 a resistance will be shunted into the circuit of the coil attractin g it. The magnetism which holds the armaturein this position will thus be reduced and the promptnessof'its movement under the means for denergizing the first-named pole after the energization of the second pole, wherebythe reverse movement of'the armature is initiated by denergization of the dominant pole, substantially-as set forth.

2. In a telautograph, the combination of a receiving-pen, an escapement for controlling 'the movements'of the same, a magnet for controlling the escapement, an armature for said magnet and circuit connections for closing the circuits of both coils in each position of the armature and opening the circuit of 40 receiving-pen, an escapement for controlling one of thecoils t-o'cause the armature to move,

substantially as set forth.

3. In a telautograph, the combination of a the movements of the same, a magnet having two coils for controlling the escapement, a

circuit is closed energizing the other pole, and

vibrating armature vibrated by the coils of said magnet, circuit connections operated by the armature such that as the armature moves toward each coil in succession, a circuit is closed through the second coil, by which latter circuit the magnetism which produces the next change of position of the armature is de-.

veloped, meansindependent of said armature for maintaining the energization of the first coil after the energization of the second, and means'for denergi'zingithe firstcoil to cause movementef thearmaturc all lsml l lflny as setvforth.

4. The combination of magnets D and E, a circuit for each of the coils ofm'agnet E controlled by the ai'mature of magnet D, and-a circuit for each of the coils of'magnet E controlled by the armature of magnet E, the 0011- nections being such that the interruption of either of the circuits controlled by the armature of magnet D causes thearmature of magnet E to move under the eifect of the magnetism of'one of the circuits controlled by the armature of magnet "E, substantially as set-forth.

I 5. 1m a telautograph, the combination of a receiving-pen, a'n escapement for directly propelling the same, a magnet forijcontrolling said escapement, a vibrating armature for said magnet providetl'with circuit makers and breakers, whereby the movement of the armature is continued automatically, and means connected with thereceiviug-pen for opening the circuits of the escapement-magnet whenthe receiving-pen comes to a position of unison, substantially asset forth. 1

In testimonywhereof I have hereunto set my hand in the presence of two' subscribing witnesses, Y GEORGE S. TIFFANY.

\Vitnesses:

H. Mosns, S. M. LEEsoH.-

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