US307234A - seeehy - Google Patents

Description

(No Model.) 4 Sheets--Sheet 1.

R. J. SHEEHY.

-PRINTING TELEGRAPH.

No. 307,234. Patented Oct. 28, 1884.

By his Harney/5 N, PETERs Phuwmwgnpmr. wnshingwn4 DA;

(No Model.)

4 Sheets-Sheet 2. R. J. SHEEHY.

` PRINTING TELEGRAPH. No. 807,234. Patented Oct. 28, 1884.

Iig. 3, v

WITNESSES INVENTOR (No Model.) 4 sheets-sheet s;

R. J. SHEEHY.

PRINTING TELBGRAPH. No. 307,234. Patented Oct. 28, 1884.

INVENTOR wnNEssEs 6?., By kw www berzlskhg, OW-@M @uw Q 4 sheets-'sheet 4.

(No Model.)

B.. J. SHEEHY.

PRINTING TELEGBAPH.

INVIENTOR WITNESSES N. PERES. Phowbmogmpmn wlwgrm ac.

FFICE.

Armar ROBERT J. SHEEHY, OF NEV YORK, N. Y.

PRINTING-TELEGRAPH.

SPECIFICATION forming part of Letters Patent No. 307,234, dated October 28, 1884.

Application `tiled December 15, 1883.

[o @ZZ whom, it may concer/z.-

Be it known that I, ROBERT J. Snam-rv, a citizen of the United States, residing in New York, in the county and State of New York, have invented certain new and useful Improvements in Printing-Telegraphs, of whichr the following is a specification.

My invention relates to the class of printing-telegraph receiving-instruments in which two type-wheels are employed for recording in suitable characters the messages ordispatches which are transmitted over a single main-line conductor through the agency of electric currents and impulses.

The object of the invention is to provide means for conveniently and reliably effecting, by means of electric impulses transmittedv over a single main line, the following results, viz: rotating the particular type-wheel from which impressions are at any time being effected; causing the remaining type-wheel to stand in a predetermined position of rest; arresting` the moving type-wheel in any desired position for printing, effecting impressions of the characters upon that type-wheel which has thus been caused to stand above the printingplaten; transferring to the other type-wheel, when desired, and operating the same in a like manner, and arresting either typeavheel at a predetermined unison-point at will.

The invention consists in constructing the apparatus in substantially the following manner: The two type-wheels are respectively mounted upon a shaft and a sleeve surrounding that shaft. A movable clutch is mounted upon this shaft and adapted to be locked either with the shaft or with the sleeve, according to the position which it is caused to assume. Moving with'this clutch is a .ratchetwheel adapted to advance the same step by step in response to electric impulses of alternating polarity which are transmitted through the coils of the electro-magnets of the instrument. The one wheel or the other will therefore be advanced accordingly as the clutch is locked with Jthe shaft or with thc sleeve. An independent armature applied to one of the electro-magnets is arranged to cause the clutch to be shifted longitudinally upon the type-wheel shaft when the type-wheel with which it is locked has been a-rrested at a predetermined (No model.)

point in its revolution. If, then, an impulse those employed for actuating the type-wheels is employed for effecting impressions from the particular type-wheel which is being rotated. Each type-wheel is provided with its individual printing-platen, and these platens are both provided with a single actuating-lever, which is moved in position to engage one or the other,

accordingly as the characters are to be printed from one or the other of the type-wheels. The unison of the type-wheels with the transmitting-instrument is secured by means of a detent, which, during the revolutions of the clutch, is caused to advance into the path of a stop moving with the type-wheel which is to be brought to unison. Each time an impression is effected from either type-wheel the detent is released, and the full number of revolutions of the type-wheel are subsequently necessary before the type-wheel will be arrested. The particular organization of electromagnets whereby the type-wheels are actuated which I prefer to employ consists of two electro-magnets included in circuit in the main line. The circuit-connections of one of the three, however, are reversed with reference to the main line at each change in the polarity of the currents transmitted thereto-that is to say, cach time the polarity of the currents transmitted through the instrument is reversed the terminals of the coils of this electro-magnet are also reversed, and in consequence the polarity of the electro-magnet remains unchanged. The polarities of the remaining magnet, however, are reversed at each reversal of current upon the main-line. Applied to the two electro-magnets is an armature normally polarized with a given polarity IOO by means of the magnetism of constant polarity induced in the reversible electro-inagnet. This armature extends before the poles of the two remaining electro-magnets, and it is so pivoted that it will be actuated at each reversal in the polarization ofthe same. The movement thus occasioned is converted, as already stated, into a rotary movement of the ratchet-wheel, and thus of either one or the other of the type-wheels.

The invention includes several details of construction and organization,which will be hereinafter fully described. fr

In the accompanying drawings, which illustrate the invention, Figure l is a front elevation of the instrument through the plane l l, Fig. 2. Fig. 2 is a side elevation of the complete instrument. Fig. 3 is a plan view, one of the electro-magnets being removed. Fig. 4t is a plan view through the planea 4, Fig. 2. Fig. 5 is a front elevation through the plane 5, Fig. 2; and Fig. 6 illustrates the construction of thepaper-feeding device, together with the organization of circuits. Fig; 7 is a verticaltransverse section illustrating the organization ot' the platen and type-wheel transferring devices. Fig. 8 is arear clevation,partly in section, illustrating the organization ofthe transferring devices.

Referring to these figures, A represents the frame upon which the various parts of the mechanism are supported, and B', B2, and B2 represent electro-magnets employed for actuating the saine. These electro-magnets are designed to be included in series in the circuit of the main line of the system. The circuitconnections, however, ofthe electro-magnet B are reversible by means of a circuit-controlling device, C. This device consists of four contact-points, c c2 and d d2, between which extend two yielding contact-springs, c and c". The contact-points c" and c2 are respectively connected with each other and wi th one terminal of the coil of the electro-magnet B. Likewise the points d and d2 are connected with each other and with the remaining. terminal of the coil of electro magnet B. The contact-springs c and 0*, Fig. G, are respectively connected with the main-line conductor and with the conductor leading through the coils of the two remaining electro-magnets B and B2. It will be seen, therefore, that when thecontact-springs c and cL are toward the points c2' and d2 a current from the main line will be transmitted through the coils of the electro-magnet B2 in the direction indicated by the arrow. \Vhen, however, the contact-springs rest against the points c and d', the direction of the current through the coils will be the reverse. The contact-springs c3 and c are carried upon a lever, D, Fig. 3,

.which is alternately actuated in one direction vand the other by the movements of the propelling-armature D of the type-wheel, in a manner hereinafter described. The armature E extends in front of the poles of the two electro-magnets B and B2, and is secured to or constitutcs a part ot' a vertical shaft, E, which is pivoted at its upper extremity in a suitable bearing in the extension ofthe pole of the electro-magnet B. This section B2 of the armature preferably extends through or into a hollow portion, c, of theextension, and is thus placed in magnetic contact with the pole of the electro-magnet B. lt will therefore receive byinduction a polarization accordingly. Thus, if the electro-magnet B2' be so vitalized that its pole b is north, then by induction the extremities c and c2 of the armature will partake of the same polarity. Considering'that the current required to develop magnetism of this character in the pole L when the circuitclosing device C is in the position shown in the drawingsnthat is to say, toward the right hand-is such as will induce in the pole b ofthe electro-magnetB north polarity and in thepole b2 of the electro-magnet B2 south polarity, the armature E will be impelled in thexdirection indicated by the arrow-that is to say, the extremity c2 will be attracted toward the pole b2, and the extremity c will be repelled from the pole b. li'. then, the polarity ofthe current be reversed without reversing the polarization of the armature, the latter will be impelled in the opposite direction. It will be necessary, in order to retain a constant polarity, therefore, on the part ofthe electro-magnet L, to reverse the connections of its coils each time the polarity of the current upon the main line is reversed. This is accomplished by means of the circuit-controller C in the following manner: An arm, j, Fig-S, is pivotcd to the end e of the armature E, and one tremity of the same is linked to a pivoted lever, f2. To the long arm of this lever' is fastcned a iiexible spring,f2. The remaining end of this spring is attached to the support D of the springs c2 and c, and serves to impart to the same a pressure in one direction or the other, according to the position occupied by the armature E. Thus, ifthe armature E be in the position indicated in the drawings, the extremity e being in proximity to the pole b, the springf will be pressed toward the left hand, and there will be a tendency on the part ofthe same to force the arni D in the same direction. This tendency, however, is overcome so long as the electro-magnets are vitalized by means ot' two polar extensions, b'L and b5, which are respectively applied to soft-iron bands b and bl, surrounding the coils ot' the electro-magnets B and B2, respectively. The armature c" is held toward the one into proximity to which it has been placed so long as the magnetization of the electro-magnets continues. At an interruption, however, of the circuit, the attractive force exerted by the polar extension b, for instance, being caused to cease, the force of the springf will impel the arm D in the opposite direction. The circuit-connections of the coils ofthe magnet B:i .will thereupon be reversed, in the manner already described. The next succeeding current of opposite polarity will therefore occasion like IOO IIO

magnetization on the part of thc electro-mag--I prolonged currents employed for printing, is

net B3, but it will reverse that of the electromagnets B and B2. The armature E will therefore be impelled in the opposite direction, and the springj'3 will be placed in posi-4 tion to cause the circuit-controller C to again reverse the connections of the electroanagnct Bi and to reinstate the former conditions as soon as the current isl again interrupted or its direction changed. In this manner alternating positive and negative impulses will cause a uniform vibration on the part ot' the armature E. It will be understood that for the reason that the polarization of the electromagnet B3 is never reversed it may with advantage be of considerable size, and its action may be slow in comparison with that ot' the electro-magnets B and B. The vibrations ol' the armature E which are thus occasioned are employed for actuating one or the other of two type-wheels, T and T`, accordingly as the support of one or the other is engaged by a clutch, H. The typewheels are respectively mounted upon ashaft, t, and a sleeve, t2, surrounding the same. The clutch H consists of a sliding sleeve, l1, which surrounds the shaft t, and which carries or is formed into a pinion, H', designed to be engaged by a driving pawl, H2, and thus to be advanced step by step by the movements of the armature E. The pinion is of sufficient length to insure that it will be engaged by the pawl whether the clutch be in position to engage one type wheel or the other. rlhe pawl is driven by means of a suitable system of levers, E, connecting the pawl with one arm, c, ofthe armature. The clutch H is also provided with two clutch-pins, /L and h2, adapted to engage one or the other of two disks, h andlt, respectivel y, secured to the shaft t and to the sleeve t?. These disks are each provided with a sin- 'gle perforation, 11F' and la, for receiving the corresponding locking-pins. then the clutch is in the position shown in the drawings, Fig. 3, the pin h', by engaging the disk lr, looks the same to the shaft z. If, however, the clutch be moved in the opposite direction, the pin hz will engage the disk 7L* and lock thc sleeve if" of the type-wheel Ti. The means whereby this clutch is transferred from one of its positions to the other consist of a lever, J, engaging the sleeve h by means of its forked extremity j entering an annular groove, J, formed in the sleeve. rlhe lever is provided with two arms, j and ji, which are rcspcctively designed to engage the peripheries of the twodisks h and h4, permitting the one to revolve while the other is arrested. For this purpose each disk It and /r is provided with a slot, hl, (sec Figs. 3 and 5,) into which the extremity of the corresponding arm extends when the device J is turned upon its axis. A

The method of operating this device when it is desired to unlock one of the typen-heels and to lock the other is-as follows: lo the paper-feeding armature K, which will be hereinafter described, and which responds to the pivoted a link, 7s. This link in turn is pivoted to a lever, k2. One end of the lever rf" is pivoted to the frame at k. The other end of this lever carries a support, kt, for two springs, m and m2. These springs are respectively provided with hooks or latches an and m, projecting toward the respective extremities of a cross-arm or rockinglevcr, N. To one arm, or', of this lever is pivoted au extension, j, ol" the rocking lever J. Vhcn, therefore, thedevice is in thc position shown iu the drawings, (sec Fig. 4,) the armj2 will be in engagement with the disk h" of the type-wheel sleeve i?, but the arm j will be held away from thc corresponding disk, 115. lf, however, the rock-lever N be turned upon its central axis, so that the arm ai moves toward the right hand, the device T will be turned upon its axis so that its arm j will engage the disk h3 and lock the type-wheel shaft t, at the same time freeing the disk h" from engagement with the arm j. rlhe same movement of the device Jtransfers the clutch H from one disk to the other, causing the one to be locked and the other to be released, in a manner already described.

rlhe method of actuating the rock-lever N in this manner, when desired, is as follows: rlhe two springsm and m?, which extend near the respective extremities of t-he lever N, are provided with a controllingarm, O, which is designed to hold either one or the other spring ont of the path otthe corresponding catch, a or a?, carried upon the respective extremities ofthe lever N. 'lhis deviceis actuated through the instrumentality of a pinion or idle wheel, p, and two toothed wheels, p and pi, which are placed upon opposite sides of the same, and which are engaged thereby. (See especially Figs. et and 5.) The central wheel or pinion, p,carries upon an extension of its axis or arbor the circuit-controlling arm O, above referred to. This circuit-controlling'arm consists ot two portions-namely, an arm, p3, which is secured to the pinion or idle wheel p, and of a cross-arm, p, which is carried at the lower extremity of the arm 1f. rlhe respeetive ends of the crossarm p* extend into proximity tothe springlarms m' and mi, and it serves, when moved to one side or the other, to press one or the other of these springs outward,so that the corresponding latchmi crm", will be out of the path of its catch n or n2. Each ot' the wheels p and p? is provided with an L-shaped arm, as shown at p and p5, re,- `spectively lThese arms p5 and p respectively extend beneath the two corresponding pins, pl and p3, which are respectively carried upon the type-wheel shaft t and the sleeve fl. The whole device l? is supported upon a sleeve, p, surrounding a stud or support, p, and upon which it is vertically movable, being coupled therewith b v means of a pin and slot, as shown at pw and p11. \Vhen the device P is moved upward, it will not bc acted upon unless. the path ot' one or the other of the arms p5 or p .is intercepted by the corresponding IOO IIO

)in ff or 9S. If however thet Je-whcel T2 angled lever thelono" arm of which enea-ees 7 l 7 7 h 5 7 b D ':s 7

for instance, is being actuated, and its supportingsleeve t2 be arrested in such a position that the pin ps is above and in the path of the arm p, then this arm will be held down while the device l) is forced upward. The corresponding toothed wheel, p', will therefore be turned toward the right hand, Fig. 5, into the position shown in the drawings. The move ment of the wheel p is communicated to the central pinion, p, and the crossarm if is thus carried into such a position that the spring m2 will loe pressed outward, as shown in Fig. 4. If, on the other hand, the instrument is being operated with the parts in the position shown in the drawings, the type-wheel T being employed for giving impressions, and it is de sired to transfer to the type-wheel T`', the typewhcel T should be arrested in such a position that the piep7 on the shaft t (see Figs. 3 and et) is above the arm p5. The device P being then elevated, thearm p5 will be-engagcd by the pin p7. The wheel p2 will be actuated, causing the pinion p and the arm p to be turned, so that the spring-arm m2 will be released from the cross-arm pt and the springarm m pressed outward. The next subsequent longitudinal-movement of the springs m and m2, which is occasioned by means of the movements of the paper-feeding armature before referred to, will cause the latch m," to engage the catch n, causing the lever N to be turned upon its axis, thereby moving the clutch H, through the instrumentality of the device J, from engagement with the disk r into the corresponding engagement with the disk h". The arm j is by the same operation placed against the periphery of the disk h, entering the slot 717, while the arm j2 is released from the disk It", The .type-wheel T2 will thereupon be free to be actuated, while the type-wheel T will be locked. The movement of the device upon its vertical axis causes the particular arm, pf or p, which was brought into engagement with the stop or pin p7 or p8 to be carried out of the axial line of the type-wheel shaft and sleeve. During the subsequent upward movements of the device l? that arm p, for instance, will not be in a position to strike the corresponding arm or pin. The other arm, p, however,will, by the same movement of the devicel? upon its axis, be brought into position to be engaged by the pin ps, provided thc type-wheel T2 is arrested in the position to bring the pin ps exactly above the arm pf. In practice the type-wheel is4 arrested in this position only when it is desired to transfer the clutch from one type-wheel to the other. 'Vhen it is desired to again actuate the type-wheel T', it is necessary only to arrest the typewheel T' in such a position that the pin 1f will be above the arm p", and the next upward movement of the device l) will actuate the lever J in the opposite direction and re-establish the former conditions.

The means whereby the device l? is moved vertically whenever desired comprisea rightby Vmeans of a fork, q, the sleeve p8. The short arm of this lever is pivoted to one end oia link, q2. The opposite end of-this link is pivoted to a lever, qi", supported from abracket, g". The lever g" `is actuated by the presslever R', in a manner hereinafter described. Each time this press-lever is actuated thelink q2 is thrown backward, thereby causing the lever Q to throw the sleeve ps upward, thus actuating the' device P, in a manner already described.

It will be evident that as often as the apparatus is adjusted to print from one or the other ofthe type-wheels it will be necessary to actuate the corresponding platen. To ac complish this result I provide the two typewheels T and T2 with two movable platens, S and Si, respectively. supported in a suitable bracket, S, in which they are vertically movable. Beneath them extends a hammer, s', carried upon an arm or lever, The remote end of this lever is pivoted to the lever N. Each time, therefore, that the lever N is actuated the arm will be moved in .one direction or the other, thereby carrying the platen-hammer s from its position beneath the one of the platens SorSZtoa corresponding position relative to t-he other platen. Thus inthe drawings the platen-hammer s is shown beneath the platen S. If, however, the device N be actuated so as to release the ty pe-wheel T2 and lock the type-wheel T, the platen-hammer s will be at the same time translerred from the platen S to the platen S2. For the purpose of actuating this platen-hammer, and thus the platen beneath which it chances to stand, a pin or arm, si, is carried upon one arm of a right-angled lever, S. Upon this pin rests the arm s?, which is thrown upward cach time the lever Sz isactuated, causing an impression to be taken from one or the other of the type-wheels. The armature R', which serves to actuate the lever S, and thus to effect the impressions,is applied to the electromagne B, and responds to electric impulses of whatever polarity having a greater duration than those employed for actuating the armature E. An arm, o", extending from the armature R, passes in front of one arm of the bent lever S3, and each time the armature R is drawn toward its electromagnet it actuates this bent lever, and not only operates the device l in the manner already described, but also actuates the platenhammer s', causing an impression to be effected.

For the purpose of causing the paper tape upon which the impressions are received to be advanced each time an impression is made or a spaceis desired upon the tape, an armature, K, is applied to the electro magnet B2, and this armature is designed to respond to the electric currents ofthe same character as those causing the armature 'R' to be actuated. It is,

however, preferably supported from the same standard, r2, as the armature R, and it is there- These platens are I OO IIO

fore acted upon through alonger leverage, and tremities of these shafts respectively carry preferably through a greater distance. The attraction exerted by the electro-magnet B2 upon its armature will be increased as soon as the armature It has responded to the attraction of the electro-magnet B by reason of the prox imity of armature It to the pole of the magnet B', for the reason that the magnetic metal comprising the armature, the cores of the magnet, and the back plate,B,upon which the magnets are supported,serve in much the same manner as the ordinary back piece or yoke of an electro-magnet to increase the magnetic efeet exerted upon its armature.

The device which I prefer to employ for feeding' the paper forward, and which is to be actuated by the movements of the armature K, consists of a movable slide, r", constituting van extension of the paper-guide r, and a pressureclutch or friction-clutch, r", pressed toward the surface of the same. The paper tape, as it passes beneath the type-wheel, is led through the extension r3 and beneath the clutch or pawl ri", which is preferably serrated upon its edge to insure a better action ofthe same. One arm of a right-angled lever, if, is pivoted to the extension r3. The other arm of this lever is linked to a second right-angled lever or bell-crank, ri. This lever is provided with a sliding connection with the armature K, as shown at rt. Each time this armature is drawn toward its electro-magnet the extension r3 is impelled in the direction indicated by the arrow, Fig. 6. Vhen, on the other hand, the armature K is drawn away from its electromagnet by the action of its retractile spring, the extension r is drawn backward away from the type-wheel, advancing the paper tape. The amplitude of the vibration ot' the extension ofthe pawl thus secured is sufficient to advance the paper a proper distance as each impression is taken. The pawl rt itself is supported upon the carriage and moves with the extension r". p

The device U, which I prefer to employ for securing a unison 'between the transmitting device and the particular type-wheel which is being` employed for printing, comprises a sleeve, fu, supported upon and surrounding a standard, a2, upon which it is secured by means of a pin, as, and slot at, which permits of its longitudinal movement. At the upper end of this sleeve are annular teeth a5, each designed to be successively engaged by a pawl, a, carried upon one arm of a lever, al; The other arm ot' this lever projects against the periphery of a cam, u8, carried upon the clutch H. Each time theclutch is revolved this cam actuates the lever ai and causes the sleeveu to be elevated a distance corresponding to one of its annular teeth fui.

At the upper extremity of the sleeve u is carried a pin, o, which is caused by the successive movements of the sleeve to approach the path of one or the other of two cross-arms or levers, c or c?, which are respectively carried upon rocking shafts v3 and o4. The eX` two pins, and c, which are designed to intercept the paths of corresponding unisonstops respectively moving with the shaft t and sleeve #,whenever it is desired to secure a unison of the corresponding type-wheel. These stops may be the pins p7 and p8, referred to in connection with device I). Normally the pins and v are out of the paths of the corresponding pins, p7 and p3. pin v be pressed upward against the corresponding arm, ln or v2, it will turn the corresponding rock-shaft upon its axis and cause the corresponding pin, lv5 or t, to intercept the path of the unison-stop pi or ps. If, therefore, the armature E be actuated continuously, the corresponding type-wheel will eventually be arrested at its unison-point by reason of the continued upward movement of the sleeve u. and pin fr.

For the purpose of causing the pin v to strike against only one of the pins c or o when it is thus thrown upward, and to unison only the type-wheel which is being actuated, the support upon which the sleeve u is carried is constructed to be turned so that the pin c will be beneath the arm o only when the type-wheel T' is being actuated and beneath the arm c2 only when the type-wheel T2 is being actuated. This is accomplished by securing to the standard u2 an extension, X', which is linked to the arm N. This support therefore moves in one direction or the other, according to the direction of the movement of the device J. Thus, if the device J be actuated so as to lock the type-wheel 'I2 and release the type-wheel T, the shaft u2 will be rotated so that the pin u will stand beneath the pin n', and will there fore actuate only that corresponding device when the sieeve a is raised to its upper limit. The parts are preferably so adjusted that the point at which the unison device will arrest either typewheel is the same as that in which the type-wheels are caused to stand for the purpose of actuating the transferring device I). This particular organization is not, however, always essential.

For the purpose of preventing either typewheel from being thus arrested when it is desired to print continuously from the same, I provide a lever, Y, which carries an armature, c', which is applied to an extension, Y', of the core of the electro-magnet B3. This armature responds whenever a current of sufficient duration to actuate the printing device is transmitted through the coils of the electro-mag nets. As the polarity of the electro-magnet B3 is constant, it maybe necessary to adjust this electro-magnet carefully. It may, however, be applied to one of the other electromagnets, B/ or B2. An extension, y, of the arm Y passes behind the pawl u and a dog, a9, by means of which the sleeve a is held in its upward position, and serves to throw them out, allowing the device to fall to its original position each time the armature fj is actuated. The entire number of revolutions of the type- If, however, the

IOO

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wheel will then be subsequently performed i stop carried thereupon, ot' a vertically-movbefore the unison device will again be advanced a sufti cient distance to arrest the typewheel which is being actuated. In practice I prefer todi ave the same about three revolutions of the type-wheel. Vhenever it is desired to bring the type-wheel to its unison-point, it is necessary only to complete, say, three revolutions, therefore, ot' that wheel without actuating the releasing device.

The operation ot' the device has been sulticiently described in connection with the description of the apparatus.

I claim as my inventionl. rlhe combination, substantially as hereinbet'ore set i'orth, of two type-wheels respectively mounted upon a type-wheel shaft and a sleeve surroumling said shaft, a locking-clutch longitudinally movable along said shaft, and a device acting to transfer said clutch from engagement with said shaft into engagement with said sleeve and to simultaneously lock said shaft, and vice Vversa, substantially as described.

2. The combination, substantially as hereinbel'ore set l'orth, of two type-wheels, a clutch located in the axial line ot' said type-wheels, means, substantially such as described, for-rev volving said clutch, and a transferring device acting to release said clutch from engagement with one of said type-wheels and to place it in engagement with the other' when the firstnamed type-wheel has been arrested in a predetermined position.

3. rlhe combination, substantially as hereinbefore set tortlnwith two type-wheels, a vclutch t'or engaging either one or the other orn said type wheels, and means l'or revolving said clutch, ot' a device for transferring said clutch, consisting of a lever engaging the same, a seeond lever or arm which is brought into position to actuate the Erst-named lever when the engaged type-wheel has been arrested at a predetermined point in its revolution, and means, substantially such as described, for actuating the second lever by an interruption of the electric currents employed l'or effecting inipressions from said type-wheels. Y

-L. rlhe combination,substantially as hereinbefore set t'orth, ol' two type-wheels, a clutch l'or engaging one or the other of said typewheels, the arm for transferring said clutch, the lever l'or acting upon said arm, the vertically-movable arms, one ol' which extends into the axial plane oi' said t,\'pe-\vheels,and means, substantially such as described, for causing said arms to move toward and from the axis ot' said type-wheels, and for causing the arm standing in the plane of said type-wheels to be actuated when the engaged type-wheel has been arrested in ai predetermined position,and means, substantial] y such as described, t'or causing the arm thus engaged to place said arm in a position to cause the transfer ot' said clutch.

5. rIhe combination, substantially as hereinbefore set forth, with a revolving shaft and a able arm, a pinion actuated by said arm, a lever actuated by said pinion, a detent secured to the support of said pinion, a resilient arm, normally held ont ofthe path of said detent, ineans,substantially such as described, for moving said resilient arm at right angles to the support of said detent, and means, substantially such as described, tor permitting said .resilient arm to engage said detent when said pinion has been actuated..

6. rlhe combination, substantially as hereinbet'ore set forth, ot two toothed wheels, two

crank-arms respectively carried thereby, a een trat pinion actuated by either ot' said toothed wheels, two resilient arms, a lever extending tronrsaid pinion into the path of said resilient arms,which lever engages one or the other ofthe same, accordingly as one or the other ot' said crank-arms is primarily actuated.

7. rlhe combination, substantially as hereinbefore set forth, of two type-wheels, a clutch for engaging one or the other ot' said typewheels, two longitudinally-movable arms, two latches carried upon said arms, a lever foractuating said clutch, and means, substantially such as described, Vt'or causing one or the other ot' said latches to be held ont of the path ot' said clutch-actuating lever, while the remaining arm is permitted to engage the same.

S. rlhe combination, substantially as hereinbefore set forth, ot' the loiigitudinally-movable clutch, the system of levers tor actuating the same, two detents respectively carried upon opposite extremities ot' one o1" said levers,two longitudinally-movable resilient arms for respectively engaging said detents, and means, substantially such as described, brought into action when the said clutch has been arrested in a p redeteri nined position, ller permitting one ot' said resilient arms to engage one ot' said detents, at the same time forcing the remaining resilient arm out of the path ot' the remaining detent.

E). rlhe combination, substantially ashereinbefore set forth, of two revolving type-wheels and two stops moving therewith, two crankarms respectivelyrmoved into the path of said stops, means, substantially such as described, for impelling said crank-arms to and from said stops, and means for turning the support ot' said crank-arms upon its axis, thereby throwing one or the other ot' said crank-arms out ot' the plane of' its corresponding stop.

l0. The combination, substantially as hereinbefore set forth, with two resilient arms and a lever for engaging one or the other of said arms, of a pinion for actuating said lever, two toothed wheels respectively engaging the opposite sides of said pinion, means, substantially such as described, for imparting to said pinions a vertical and a horizontal movement and causing one or the other ot' said toothed wheels to be actuated, thereby acting through said pinion to place said arm out of engagement with one and into engagement with the other of said resilient arms.

IOO

IIO

IZO

n 11. rlhe combination, substantially as hereinbcforc set forth, with two type-wheels, a clutch for engaging one or the other otl the same, and means, substantially such as described, for operating said clutch, of a movable platen-ha1nmer actuated by the movements of said cltitoli-transferring device.

l2. The combination, substantially as hereinbefore set forth, ot' two type-wheels and two platens respectively applied to said typewheels, a clutch for engaging one or the other of said type-wheels, means, substantially such as described, for transferring said clutch, and a platen-hammer caused to stand beneath one or the otherof said platens, accordingly as said clutch engages one or the other oit' said typewheels.

13. rlhc combination, substantially as hercinbet'ore set forth, ot' two electro-magnets, an armature applied to the poles of one ot' said electro-magnets and normally polarized by the second electro-magnet, and means, substantially such as described, for reversing the cir cuit-connections of the second electro-magnet at each reversal in the polarity ot' a current caused to traverse its coils. y

V14. rlhe combination, substantially as hereinbel'ore set forth, oi'two eleeti'o-inagnets,aiid a eircuit-controlling device actuated by the magnetism induced in one ot' said electro-magnets to reverse the circuit-connections ol" the other eleetro-n1agnct at each reversal in the polarity ot' the current transmitted through the first electro-magnet.

l5. The combination, substantially as hereinbel'ore set forth, with an electro-magnet, of a second electro magnet included in series therewith, anda ci rcuit-con trolling device controlled by the magnetism induced in the firstnamed electro-magnet for causing the magnetism induced in the second elcctroanagnet by means oi' alternating electric currents to bc ot' constant polarity.

16. The combination, substz'mtially as hercinbeforc set forth, with a main line and an electro-magnet. ot'`a cireuit-controlling device, substantially as described, acting to reverse the connections of the coils of said electro-mag net with reference to the main line at each reversal in vthe polarity ot' the current transmitted through said main line.

17. In a printiiig-telegraph instrument, an oscillating armature actuated by electric currents of alternating polarity andV normally po larizcd with a given polarity by an electromagnet included in t-he circuit of the main line. Y

1S. The combination, substantially as here inbefore set forth, with an electro-magnet, of a second electro-magnet, a circuit-controlling device for reversing the connections ofthe said second electro'magnet with reference to the first-named electroanagiiet, and an armature for actuating said circuit-controlling device, which armature is applied to the iirst-named electro-magnet, and is held in proximity to one or the other of the same by eleetro-niagnetism,

| but is impellcd from such position at the cessation ot such magnetism.

19. rlhc combina-tion, substantially as hereinbefore set forth, with :mfelcctro-magnet, of a second electro-magnet, a circuit-controlling device for reversing the connections ot the first-named electro-inagnet, an armature for actuating said circuit-controlling device, two bands encircling the first-named electro-magnet, and constituting the poles for said armature, and serving to retainsaid armature in one oi' its positions or the other so long as said electro-magnets remain vitalized.

20. The combination. substantially as hereinbefore set forth, with an oscillating armature normally polarized by induction from an electro-magnet, of a ci rcuitcontrolling device applied to said electro-magnet, means, substantially such as described, for retaining said circuit-controlling device. in one or the other ot the positions which it is caused to assume, and a resilient arm caused to exert upon said armature a pressure in one direction or the other, according to the movements of said os` cillating armature. and to thereby operate said circuitcontrolling device when said retaining i'orce is removed.

2l. The combination, substantially as hereinbei'ore set forth, with an oscillating armature, E, of theleve`isj"f, the circuit-controlling device C, and the resilient arm f3.

22. The combination, substantially as here` inbet'orc set forth, with two electro-magnets and an armature applied to said electro-magnets and normally polarized with a given polarity by one ot' the same, f two armatures respectively applied to the remaining electromagnet, a printing platen actuated by one of sai d lastnamed armatures, and a paper-feeding device actuated by the other of said armatures.

23. rlhe combination, substantially as hereinbefore set forth, ot' two eleetroanagnets, au armature applied thereto and normally polarized with a given polarity by one of said elec` tro-nn'lgnets, an armature applied to the remaining electro-magnet, two type-wheels, a. clutch `l'or engaging one or the other ot said type-wheels, and means, substantially such as described, for transferring said clutch through the agency ofthe last-named armature.

2t. The combination, substantially as hereinbefore set forth, with two type-wheels and means, substantially such as described, for actuating one or the other of said type-wheels, ot' a ty pe-wheel transferring device under t-he cont-rol of theactuating mechanism of either of said type-wheels, and means, substantially such as described, for causing said device to bring the type-wheel which is notbeing actuated into operation when the actuated typewliecl has been arrested in a predetermined position 25. The combination, substantially as hereinbefore set forth, ot an oscillating armature,

two type-wheels, one or the other of which is second electro-magnet with reference to the in combination with a pawl caused by the sucactnated by thc movements of said armature, two platens respectivelyapplied to said typewhecls. a platen-hammer which is pla-ced in a position to engage one or the other of said type-wheels, accordingly one or the other ot' said type-wheels is actuated, and an armature acting to impel said platen-hamnier toward the platen beneath which it at anytime stands when an impression is to be taken from one or the other of said type-wheels.

26. The combination, substantially as hereinbefore set forth, with two type wheels and two `movable platens respectively applied thereto, of aplaten-hammer for impelling one or the other of said platens, an armature for actuating said platen-hammer, and means, substantially such as described, for determining the position ot' said platen hammer beneath one or the other ot said platens.

27. The combination, substantially as hereinbefore set forth, with a revolving type-wl'ieel, of a stop moving with said type-wheel, a lever tor engaging said stop, an arm which is caused by the revolutions ot' said typewheel to engage said lever and, after a predetermined number oi" revolutions, to place said lever in the path of said stop.

2S. A unison device for printiiig-telegraph instruments having` two type-wheels, consisting of an arm carried upon a vertically-movable support having` teeth formed thereupon,

cessive revolutions of eitherof the type-wheels to engage said teeth successively, and means, substantially such as described, for turning said arm and support into position to arrest the type-wheel which is being actuated when said arm has been moved vertically through a predetermined'.distance.

29. The combination, substantially as hereinbefore set forth, with two type-wheels and means, substantiallyT such as described, for actuating one or the other of the same, of a unison device caused to intercept the path of the actuated type wheel by the successive revolutions ofthesame when those revolutions are made continuously.

30. The combination, substantially as hereinbefore set forth, with two type-wheels and 1 means, substantiallysuch as described, for rei volving one or the other of said type-wheels,

of two stops respectively moving with said type-wheels, two arms respectively extending` into proximity to the paths ot' said stops, and a unison device caused by the successive revolutions of the type-wheel which is being actv uatcd to place one or the other of said levers in the path of the stop moving with the actuated type-wheel.

3l. The combination, substantially as hereA inbefore set forth, with two type-wheels and means, substantially such as described, for re-A volving one or the other of the same, of two stops respectively moving with said typewheels, two deteuts or levers adapted to be placed in the paths of said stops, respectively, and a device for actuating one or the yother of said levers, which device placed in a position to actuate one of said levers only through the action ot' the device which determines which of said type-wheels is to be actuated.

32. The combination, substantially as hercinbefore set forth, with a unison device for a printing-telegraph instrument, of a releasingarmature applied to a polar extension of one of the magnets ofthe instrunient, and means, substantially such as described, for maintaining` the polarization ofsa-id extension constant.

33. A paper-feeding device for a printingtelegraph instrument, consisting of a movable section ofthe Vtlat paper-guide, a pawl, means, as describethfor causing1 said pawl to press with a constant force against the surface o-t'sai d section, and a system ot' levers for actuating said section and paw]v whenever the printing device is actuated.

34.. ln a paper-feeding device, vthe combination, with a tlat paper-guide, of a movable extension thereof, through which the paper is designed to be led, a pawl, and means, as described, for causing-said pawl to press with a constant force upon the surface of the paper and to advance the same whenever an impression has been taken from the type-wheel.

ln testimony whereof I have hereunto subscribed lny name this 13th day of December, A. D. 1885.

ROBERT J. SHEEHY.

\Vitnesses:

C. T i-IoMAs Biis'iinnvlnipn, XVILLTAM H, C. Emis.

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