US643379A - Printing-telegraph. - Google Patents

Description

No. 643,379. Patented Feb. l3, 190m.

L. KAMM.

PRINTING TELEGRAPH.

(Application filed Nov. 21, 1898.) (No Model.) 6 Sheats-Sheet i.

m: norms PETERS m.. PHcm-uma. \VASHVNGYON. n. c.

No. 643,379. Patented Feb. l3, I900. L. KAMM.

PRINTING'TELEGBAPH.

(Application filed Nov. 21, 1898.) (No Model.) 6 Sheeis$heet 2.

m: mums PETERS 0a., PHQTO-UTNO" WASHINGTON, 01c

No. 643,379. 1 Patented Feb, l3, I900.

L. KAMM.

PRINTING TELEGRAPH.

(Application filed Nov. 21, 1898.) (No Model.) 6 Sheets-Sheet 3.

I'NE "cams wz'rzns co, Pnm'ouvua, WASHINGTON. q. c.

(No man.

L. KAMM.

PRINTING TELEGRAPH.

(Applicahon filed'Nov. 21, 1898.)

Patented Feb. l3, I900.

6 sheet shaat 4.

THE NORRIS PETERS ca, PRoTo-uri mv, WASHINBTON. n.,c.

No. 643,379. Patented Feb. l3, I900.

L. KAMM.

PRINTING TELEGRAPH.

(Applictgtiun me. Nov. 21, mm. (No Model.) 6 S heeis-Sheet 5.

No. 643,379. Patented Fab. I3, 890(1).

h L. KAMM.

PRINTING TELEGRAPH.

(Application filed Nov. 21, 1898.) (No Model.)

6 Sheets-Sheet 6,

Tavenfar M .L w w NlE STATES I PATENT OFFICE,

LEO KAMM, or LONDON, ENGLAND.

PRINTING-TELEGRAPH.

SPECIFICATION forming part of Letters Patent No. 643,379, dated'February 13, 1900. 1

Application filed November 21, 1898. Serial No. 697,019. (No model.)

' the Queen of Great Britain, residing at London, England, have invented new and useful Improvements in Printing-Telegraphs, (for which I have applied for a patent in Great Britain, No. 12,013, dated May 26, 1898; in

Germany, No. 16,670, dated June 2, 1898; in

France, No. 267,306, dated July 5, 1898; in Austria, dated June 23, 1898, and in Hungary,dated July 11, 1898,) of which'the following is a specification.

My invention relates to printing-telegraphs of the kind described in the specification of former Letters Patent granted to 'me, No.

572,760, dated December 8,1896, and it comprises the improvements hereinafter described, whereby the construction of such apparatus is greatly simplified and its efficiency.

at the same time increased.

In the accompanying drawings, Figure 1 is a plan view of my improved apparatus, and

Fig. 2 is a sectional side elevation of the same.

Fig. 3 is an elevation of some of the parts seen from the left-hand side of the machine; and Fig. 1 is a section on the line 4 4, Fig.3, looking in the directionof the arrow 1 in the said figure. Fig. 5 is a section on the line 5 5 of Fig. 3 looking in the direction of the arrow 2 in the said figure. Fig. 6 is a section on the line 6 6, Fig.2, showing certain parts. Fig. 7 is a central vertical. section of certain parts of the mechanism shown in Fig. 2, but drawn to a larger scale. Fig. 8 is a section on the line 8 8, Fig. 7. Fig. 9 is a sectional elevation of a portion of the righthand side of Fig.

1. Fig. 10 is an elevation, drawn to an en-' larged scale, of part of the mechanism shown in Fig. 6 looking in the direction of the arrow 1 in the said figure. Fig. 11 is a view of the parts shown in Fig. 10 looking in the direction of the arrow, and Fig. 12 is a plan View of the said parts. Fig. 13 is a sectional view of a detail hereinafter described, drawn to an enlarged scale; and Figs. 14 and 15 are respectively an elevation and aplan of another detail, also drawn to an enlarged scale. Figs. 16, 17, and 18 are a front view, a side view, and a section, on the line 18 18, Fig. 16, looking in the direction of the arrow, of one of the magnets of the apparatus and its armature. Figs. 19 and 20 are plan views illustrating de-j tion of a counting-device to be used in. conjunction with my apparatus.

ais-the baseboard of the apparatus, and b isa metal plate attached thereto and having fixed to it the two pillars or uprights b,

united at their upper ends by the cross-head b c is the spindle carrying the synchronizing or trailing arm a, the said spindle being mounted vertically between the plate 6 and the cross-head W, as clearly shown in Fig. 7, but insulated therefrom. At its lower end the said spindle is representedas being provided with a pivot-pin 0 supported upon a screw 0?, passed through an insulating-bush of, inserted into the plate I), and at its upper end held'in position by a screw 0 also inserted through an insulating-bush c in the cross-head 11 The pivot-pin c of the said spindle is inserted into a metallic cup 0 containing mercury, which surrounds the said pin c and serves to form a good electrical connection between the screw 0 to which one of the circuit-wires is attached, as hereinafter described, and the said spindle c. The said cup 0 is held in position by the screw 0 and this arrangement permits of rotating the cup 0 independently of the said screw, so as to bring the top of the said cup into contact with the bottom of the spindle c to lock the latterfor transport purposes and at the same time prevent the escape of mercury from the said cup. v

d d, Figs. 1, 2, and 7, are the key-levers, which are mounted upon a rib d, Fig. 2, on the front edge of the plate 6, so as to radiate from the center of the said plate, each of the said levers being formed with a slot fitting onto a pin d projecting from the rib d, a plate d being placed above the said levers to hold them upon the pins. The inner end of each lever d is bifurcated and has passing through and supported in it a pin (1, the upper end of which, when its key is depressed, is caused to project into the path of the trailing arm 0' in the manner described in the said former specification. Thepins d at their upper ends are supported in a plate (i supported upon the disk (I by pillars d d, the pins 01 being in electrical contact with the plates 1) and Each of the pins 01 is surrounded by a spring d To permit of readily removing the said pins 61 and springs d from the plates Z7 and d and levers d, slots d Figs. 1, 2, 6, and 7, are formed in the plate d instead of holes, as in the former specification, the pins being prevented from falling forward out of the said slots by collars d, fitting onto the .pins and normally held by the springs d in recesses on the under side of the plate d To remove any pin, its spring at is compressed, so as to allow the collar d to fall out of its recess, i when the rod can be pulled forward atits upper end and then lifted out from the lever Cl at its lower end.

The trailing arm 0', which cooperates with the pins 01 has at the end a fork-shaped spring-contact 6, Fig. 8, which when it strikes one of the stop-pins d embraces the same and so insures a good electrical contact.

f, Figs. 1 and 9, is a weight for causing the rotation of the trailing arm 0- when the latter is released, as hereinafter described, the said weight being connected with the spindle c by the chain f passing over a pulley f The said weight is arranged to act as a plumb-bob for indicating when the apparatus is level, and for this purpose it is provided at the bottom with a point or center f, a corresponding pointf being arranged upon the baseboard. In practice I prefer to inclose the weight in a tube f and to provide the latter with a screwf which permits of fixing the weight when it is desired to move/or transport the instrument.

g, Fig. 1, is a frame which is pivoted at g g upon the baseboard aand which at its free end extends beneath all the key-levers d din such a manner that the depression of any one of the said levers causes the oscillation of the frame g. The motion of this frame is utilized for releasing the trailing arm 0 whenever one of the keys dis depressed. To permit of this, I provide the following arrangement-that is to say, upon a plate 9 Figs. 3, 6, 1O, 11, and 12, fixed to a block of insulating material 9 which is itself fixed to the plate 01 over which the trailing arm 0 moves, I pivot a bell-crank lever 9 carrying on one arm, but insulated therefrom, aspring-catoh g which is adapted to engage with a bar 9 on the trailing arm 0 and adapted with the other arm to make electrical contact with a contact-piece 9 mounted upon a metallic plate 9 also fixed to the block g of insulating material.

The contact-piece g is mounted upon a pivot 9 and has atits free end an adjustingscrew, this arrangement being provided to insure a good contact being made.

g g are springs which act on the lever 9 ing through slots in said plate.

and the contact-piece 9 respectively, and serve to hold them against the stop-pins g g. g g are pillars to which the said springs are connected at one end.

The lever g has fixed to it an'arm h, carrying an upright 71., to which is pivo'teda pendulous arm 72, carryinga trip-piece h and in connection with this trip-piece is a lever 77. Figs. 3 and 6, pivoted upon a stud h on the pillars b and having at its free end a pin 72 which is arranged in such relation to the said trip-piece that when the lever -h is turned upward from the position shown in Fig. 3 it will come in contact with the inclined or curved rear side of the said trip-piece and cause it to swing forward, the said trip-piece after the pin has moved above it falling back to its original position so that on the return or backward movement of the said lever the pin it by acting against the reverse side of the trip-piece to that which previously acted will force the said trip-piece rearwardly, at the same time pushing back the arm h and moving the lever 9 so as to disengage the springcatch of the latter from the barg of the trailing arm 0 and at the same time make contact between the said lever and the contactvpiece g Movement is imparted to the arm 7L from the frame 9 through the medium of the rod 2', pivoted at its lower end to a bracket on the frame 9 and at its upper end provided with a projecting pin 2", Fig.l3, (which .is a sec= tional elevation, drawn to a larger scale than Fig. 3, of the upper end of the said rod t' and the lever h, with which it cooperates,) which engages with a lip or lug 2' upon the boss of the lever h in such a manner that as the frame 9 is depressed the said pin 1." will. pull down the lug i and so raise the lever Win the manner hereinbefore described. This pin a" is preferably located on a separate plate, as shown, secured to the rod '1' by screws passing through slots in said plate to allow for'adjustment.

The rod provided with an extension 2' carrying a roller 2', adapted, as the rod i is moved down, torun upon the surface of a disk or cam 2' the said roller being mounted on a separate plate a'djustably secured to the extension 0f the rod 21 by means of screws pass- The said roller and disk are arranged in such relation to each other that as the said rod 2' is moved down the roller 2' will run upon the surface of the disk 2' and gradually move back the upper end of the lever i, so as to disengage the pin 7 from the lug 2' the disengagement being completed just as the frame 9 reaches itslowermostposition. Thisarrangementinsures that as the frame g is depressed the contact made between-the lever g and the contact-piece 9 shall be only momentary not withstanding that the operator retains his finger upon one of the keys.

1' is a spring which causes the return of the lever 7L4 to its normal position after the hook i has been disengaged from it, the said spring being at one end secured to a lug upon the lever h and at the other end to a pin upon the disk W.

In order to prevent the momentum of the parts from moving the lever 71 through too great an are, I attach to the said lever an arm Z carrying a hook i designed,when the limit of the movement of the lever 7% has been reached, to engage with a stop-pin i 2' is a weight which serves to assist the spring i in retaining the parts in their normal position.

The lever h is made adjustable, and as the pin t" and roller Z are also adjustable with respect to the rod 1' and its extension i re spectively, these parts may be accurately adjusted.

From the foregoing description it will be understood that on the depression of one of the keys (1 the trailing arm 0 is mechanically released and the electrical contact which completes the line-circuit made, the trailing arm after being released moving over the plate d until it makes contact with the raised pin (Z corresponding with the depressed key and so completes the local-battery circuit.

In order to minimize as much as possible the blow which the end of the trailing arm (2' makes against such upraised pin under the action of the weightf, the governor or fly j, mounted on the spindle c, which governor, as shown, consists of two weighted arms,Figs. 7, and 8, but which may be in the form of a wheel or disk, is connected to the said spindle frictionally, so that it is free to rotate under the action of its momentum after the trailing arm has come to rest. This arrangement is clearly shown in Fig. 7,wherein the said governor is represented as being pro- Vided on the under side with aspring j,which can be more or less compressed by adjusting a collar 7' upon the spindle c more or less toward or away from a flangej on the spindle.

The mechanism for releasing and stopping the trailing arm when the apparatus is being used for receiving messages comprises the horn 70, Figs. 7 and 8, pivoted to an upright on the extremity of the trailer-arm c, the said horn being made of tapering shape, as will be readily understood by reference to the detail Figs. let and 15, so that its free end will enter between any two of the projecting pins d (Z and so that when so entered it will always bring the arm in a certain position relatively with the said pins. The short arm lc of this horn is connected by a rod 70 with the free end of a lever 70*, pivoted at k to a bracket k on the trailing arm 0' in such a manner that as the said lever k is pulled toward the spindle c, as hereinafter described, the bar 9 hereinbefore described and which is attached to the rod 70 will be moved so as to disengage it from the springcatch g on the lever 9 the horn 70 being at the same time caused to enter between two of the pins (1* d Z, Figs. 1, 2, and 6, is the electromagnet through the medium of which the movement of the horn is and bar 9 is efiected, the said magnet being mounted upon a-frame Z, secured to the plate Z), and having its armature Z also pivoted to the said frame Z. The free end of the armature Z is connected by acord or chain Z with the lever 71: on the trailer, as shown in Fig. 7,the said cord passing around a pulley Z carried on the frame Z, and also around a grooved segment Z on the lever 10 in such a manner that when the armature Z is attracted the desired motion will be imparted to the lever 7c, and consequently also to the connected parts. It will be noticed by reference to Fig. '7 that the spindle c is cut away on one side and made hollow, so as to permit of the axis of the spindle a forming a tangent with the peripheries of the pulley Z and segment Z so that the cord shall always run properly over the pulley and the segmentin all positions of the trailing arm 0'.

m, Figs. 1, 2, 6, 16, 17, and 18, is the magnet for returning the trailing arm 0 to its zero position after it has been operated, and m is the armature of this magnet. This armature is mounted upon an arbor m parallel with the bobbins, as shown in Fig. 16, and is arranged relatively with the pole-piece of the magnet, as clearly shown in FigslG, 1 7, and

18, so that when the armature is attracted by the magnet it will cause the rotation of the shaft m The pole-pieces are notched to embrace the armature, so as to form a large magnetic field. To the said shaft m is attached an' arm m the free end of which has attached to it a toothed segment m which engages with a pinion m on the spindle c. The said segment and pinion are so geared together that when the trailing arm a is in its zero position the armature is in its nearest position to the pole-pieces of the magnet m. When, however, the said arm has been moved by the weightfand stopped by a pin 0Z the magnet is energized to attract the armature, whereby the segment m will be moved to 0perate the trailing arm c to return it to the zero position.

The printing mechanism comprises a typesector 41, Figs. 1, 2, 7, and 19, having upon ita series of spring-bars 11,carrying the types, (shown clearly in Figs. 7 and 19,) which seetor is adapted to slide vertically upon the spindle 0, but caused to rotate therewith by a pin n fixed to an arm upon the spindle c and passing through a hole in the sector, so that the sector rotates with the spindle to a greater or less extent corresponding with the are through which the trailing arm 0 moves.

a is the roller between which and the typewheel the paper strip to be printed passes, the said roller being mounted in bearings on a frame 12 supported upon the pillars Z) Z), and n is the reciprocating plunger which serves to press one or the other of the springbars n toward the roller 71', so as to impress the character carried by the said bar upon the paper strip running over the said roller ti, n is a pressure-roller which presses against the paper as it passes over the roller n.

The bars 01 of the type-sector each carry two characters of type, and in order to provide for raising or lowering the sector to bring the desired charaeteninto position for printing I provide the following arrangementthat is to say, upon a sleeve 0' carrying the ib type-sector n on the spindle c I arrange a roller-disk o, as shownin Figs. 1, 2, '7, and 19, and upon the bars 12 of the frame carrying the plunger n 1 arrange a block 0 carrying two inclined planes 0 0 grooved on their faces, as indicated by the dotted lines in Fig. 7 and in Fig. 20, (which is a plan view showing this arrangement,)' to receive the edge of the roller 0.

The apparatus is provided with two fingerkeys d, the pins 01 d of which are adapted, when the keys are depressed, to stop the rotation of the sector n under the action of the weight f, so that the roller 0' is opposite to one or the other of the inclined planes 0 0 If when the roller is in the position indicated by the dotted circle 0 in Fig. '7, opposite the inclined plane 0 the plunger-frame n is moved inward, the roller 0 will be caused to ride up the inclined plane 0 and so lift the sleeve 0 to bring the lower row of types upon the sector in position for printing, while if i when the roller 0 is in its upper position, as

indicated by the dotted circle 0 in Fig. 7, the plunger-frame n is moved inward the inclined plane 0 will press upon the roller and move down the sleeve 0 and the sector it, so that the upper row of 'types are in the same plane as the printing-plunger. In order that the sector shall remain in its upper or lower position, I fix upon the spindle c a spring-bar 0 carrying a roller which lies in one of the two grooves 0 0 which correspond with the two positions of the sector. The rear end of the plunger-frame n is carried by an arm p, Fig. 7, on a rock-shaftp, and this rock-shaft also carries an arm 19 from which a rod 10 extends to the ratchet mechanism for rotating the roller n the distance of a type character each time that the plunger is reciprocated, the movement of the roller being effected during the backward movement of the plunger 17.

The shaft 19, as shown in Fig. 3, receives its motion from the magnet q, hereinafter referred to as the printing-magnet, through the pivoted armature q of the said magnet, a rod ithe lever-arms g ,Figs. 1 and 3,pivoted on the stud h", the rod 1 and the crank The crank Q6 is not fixed to the shaft 19, but has its boss loosely mounted thereon and provided with a pin g Fig. 1, which cooperates with another pin g on a disk g fixed to the shaft 19. This provision of a break between the driving-crank g and the shaft 19' is to allow the printing-plunger n to move forward under the force of momentum, and thereby press more forcibly against the type of the printing-sector than would be the case if its movement were limited by the armature of the printing-magnet q. A spring r, Figs. 1 and 2, connected to a pin 0" on the shaft 19 and to an arm 4" on the cross-head Z7 serves to normally retain the pin g in contact with the p q s is the inking-ribbon, Figs. 1,2, 3, and 21,

. which runs around two horizontal pulleys s15",

carried on the frame 12 Rotary motion for causing the traverse of the ribbon is imparted to one of the said pulleys from the shaft of the paper-roller ri through the medium of two' gear-Wheels 8 the former of which is fixed on the shaft of the roller n", while the latter is fixed on one end of a counter-shaft, the other end of which carries a friction-roller s, which engages with the under face of one of the wheels 3, as clearly shown in Fig. 21. The roller .9, against which this friction-wheel bears, has pressing upon it a spring 8 for holding the said roller in frictional contact with the friction-wheel 5 With the arrangement described each time that the paper-roller n is moved to feed the paper after a character has been printed the inking-roller is also moved a short distance to present a fresh surface.

The printing-magnet q, hereinbefore described, serves not only for operating the printing-plunger and the paper-feedin g mechanism, but also for operating a contact device for transmitting a second current to the line and also a contact device for completing the circuit of the local battery through the magnet m for returning the trailing arm to zero, and to permit of accomplishing these functions the said magnet g has besides the armature q the armature t and pivoted arm to. The armature t is pivoted upon an axis 25, arranged longitudinally between the coils of the magnet q, as shown in Fig. 3, the said armature occupying a position relatively with the pole-pieces of the said magnet q, as indicated by the dotted lines in Fig. 5, so that when the said magnet q is energized the ends of the armature will be attracted toward the pole-pieces against the pressure of a spring 23 Fig. 5, the normal tendency of which is to retain the armature out of contact with the pole-pieces.

On the shaft '6 is an insulated contact-arm i Figs. 1 and 5, which is arranged to come into contact with a contact-piece 1 the said arm 25 and contact being arranged in a shunt-circuit from the main-line circuit, as will hereinafter appear. By this arrangement when the magnet q is energized the arm i comes into contact with the piece t and momentarily completes the circuit in the desired manner.

The pivoted arm a, in connection with the printing-magnet q for closing the local-battery circuit through the zero-magnet m, is pivoted at u',so that it lies substantially parallel with the armature q and in front of the same and is designed to be operated by the IXO said armature g by an arm g on the latter passing behind and in contact with the arm M. This arm it carries an arm 1L2, having at the end a disk provided with two pins M3 if.

e, Figs. 1 and 3, is a pivoted arm or blade which forms part of the local-battery circuitand which must be either in contact with the contact-piece n, which sends the local-battery circuit through the printing-magnet q, or with the contact-piece r which completes the battery-circuit through the zero-magnet m. The arm 12 has an extension '0 against which a spring-rollers bears, the said springroller acting as a kind of cam, which by hearing against the end of the extension-arm e insures the arm 1; being pressed against one or other of the contact-pieces 12 11 The pins it M, in connection with the arm M, are designed to act upon the upper and under sides of the arm r, respectively, and to shift the said arm 1; in the required manner-that is to say, when the arm n is moved. When the armature q is attracted, the pin u will move the blade 1;, so that it will be moved by the roller 1; into contact. with the contact-piece 01 while on the return movement of the arm a under the action of a spring a (attached to the arm a and a screw in a pillar to, Figs. 1 and 3) the pin a will lift the blade 1;, so that it will make contact with the contactpiece 1;.

The backward movement of the armature q is limited by a screw win a stirrup w, attached to the frame of the magnet q, Figs. 1 and 3.

In order to prevent the arm to from shifting the arm 1; out of contact with the contactpiece 0 which is in circuit with the zeromagnet m,until such time as the zero-magnet has brought the trailing arm back to the zero position, I attach to the said arm 16 a laterally-extending limb :10, Figs. 3 and 6, having at its end a projection 0c,carryinga pin :6

On the under side of the insulating-block g I mount a stop or catch lever :0 Figs. 3, 6, 10, and 11, having a shoulder ,Wl1l0l1 when the arm u is drawn toward the magnet q will engage with the pin :0 and will hold the arm in this position. The stop-lever 50 is carried on one end of a shaft 00 the other end of which carries an arm This lever 00 has affixed to it a pin as, and in the block g beneath the plate 01 is pivoted a lever 00', one end of which projects above the plate d in such a position that when the trailing arm 0 is in its zero position it will press against the said lever 00, while the other end of the said lever is arranged as a cam-surface, which when the lever 90 is struck by the trailing arm will act upon the pin w and so move the catch-lever x to release the arm a and allow it to be pulled back by its spring u In order that the magnet Z, which receives the impulses from the line for controlling the movements of the trailing arm 0' when the apparatus is being used for receiving messages, shall always be in position for opera tion and at the same time be cut out of the line-circuit when the apparatus is being used as a transmitter, I provide the switch arrangement shown in Figs. 1 and 22. This switch is arranged in connection with one of the side bars of the frame 9 and comprises the following elementsviz., a post y, to which the main-line circuit is connected, a double contact-lever y, having two contact-screws 'y 3 inserted into it, a contact-piece 111 fixed upon but insulated from one of the side bars of the frame 9 and connected with the magnet Z, and another contact-piece g fixed to the base-board a and connected with the mainline circuit and with which the screw 3 is designed to make contact. A spring y, arranged between the baseboard and an arm on the contact y, serves to maintain the contact. With this arrangement the magnet'l is normally in the main-line circuit through the post y, the lever y, the screw g and the contact-piece 1 When, however, the frame 9 is depressed, the screw 11 comes into contact with the piece if, and at the same time the contact-piece g is moved away from the screw 9 thus cutting out the magnet l.

a, Fig. 23, indicates the line-battery, and z a local battery.

The operation of the apparatus hereinbefore described and the electrical connections between the various parts of the apparatus will be understood by the following description and by reference to Fig. 23, which illustrates in diagram two instruments, which for convenience of description I will refer to as instrument 1, which shall be the transmitting instrument, and instrument 2, which shall be the instrument in which the message is to be received, the corresponding parts in both figures being represented by the same letters, a mark, (thus *j) however, being appended to the letters of instrument 2 to dis tinguish them from the corresponding parts in instrument 1.

Assume that an operator desires to trans mit a message to instrument 2. As now he depresses a key d he releases the trailing arm a and at the same time makes contact be tween the lever g and the contact-piece g breaks the contact between the parts 31 1 cutting out the magnet Z, and makes contact between the parts y gfi. The current from the battery then flows through the wire B, the lever g the contact 9 the wire 0, the contact-piece 3 the screw 3 the lever y, and the post y to the line A, thence through the post 11*, the'lever y'*, the screw if*, the con tact piece and strip 3 and the wire D* to the magnet l thence through the wire E* to the earth connection F, and thence to the earth connection F and back to the battery .2. The result of this impulse is that the trailing arm c* is released, owing to the armature 1 drawing back the bar 9 on the trailing arm out of engagement with the catch 9 At the .same time that the said key dis depressed the trailin arm 0' is also released and continues to move until it strikes the raised pin (1 corresponding with the depressed key. The moment this takes place the circuit of the local battery 2 is completed, the current from the said battery flowing through the wire G to the spindle c, thence through the trailing arm 0, the upraised pin d, the plate I), and the wire II to the printing-magnet q, thence through the wire I, the contact o, the blade o, the pillar carrying the said blade, and the wire J back to the battery The result of completing this local circuit is that the armature q is attracted to print on the paper band in transmitting instrument I and that at the same time the armature t is also attracted by the said magnet to make contact between the arm 25 and the contact-piece so that a second impulse is sent from the battery 2 through the wire B, the wire K, the arm '6 the screw t the wire 0, and the parts 1 3 y y to the line A, and thence, as before described, to the magnet 1*, whereby the armature 1 is attracted and causes the projection of the horn 7H between two of the pins (1 (1 As the horn is thus projected it completes the circuit of the local battery z through the magnet q through exactly the same course as the circuit described for the battery 2 through the magnet q, thereby operating the armature 41" and printing in instrument 2. As the armature q in each of the instruments is attracted toward its magnet q it pulls after it the arm a, so that the latter, by means of the devices hereinbfore described, moves the blade 1; to make contact with the screw t the said arm it being retained is this position by the catch 00 The local-battery circuit in each instrument now flows from the battery 2' through the wires G L to the zero-magnet m, and thence through the wire M, the screw 02 the blade 1), the post carrying the said blade, and the wire J back to the battery, thereby operating the armature m to return the trailing arm to itszero position. As the said trailing arm reaches this position it strikes the lever 00 to disengage the stop or catch lever 00 from the tooth or pin 00 whereby the arm to is free to return to its normal position under the action of the spring 10 thereby returning the blade 1; to its position in contact with the screwo.

It will be understood that the operation hereinbeforedescribed is performed each time that a key is depressed, and in operating the apparatus it is necessary after the operator has depressed a key that he should retain it depressed until the trailing arm has moved forward and again returned to the zero position.

I advantageously combine with my apparatus a counting mechanism for indicating approximately the number of letters or characters transmitted by the instrument to be recorded, and consequently an approximation made of the number of words transmitted. This counting mechanism is shown in Figs. 24 and 25 and in Fig. 1 and is represented as being arranged in connection with the pivoted frame g, a pawl pivoted to the lever being arranged, in connection with a ratchet-wheel, upon the spindle carrying the counter-disks. In the drawings the counter is of the kind known as the Veeder counter. The counter has placed over it a casing designed to be secured by a pin passing through the pillar of the counter which is attached to the baseboard a. This pin may be secured by a lead or other seal to prevent unauthorized access to the counter, and a glass is preferably placed in the top of the case to permit the record of the counter to be read.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim is 1. In a printingtelegraph the combination with a trailing arm and a printing-sector moving with the said arm and mounted on a spindle, of a hook or catch for retaining the said arm in its zero position, a lever carrying the said catch on one end and having the other end adapted for completing an electrical circuit, a frame operated by the depression of the key-levers and means for connecting the said frame with the said lever so arranged that when one of the key-levers is depressed the said lever will be operated to release the trailing arm and to complete the electrical circuit, substantially as described.

2. In a printing-telegraph, the combination with a trailing arm, of a series of longitudinally-movable pins for arresting said arm, a guiding-plate provided with slotted portions to receive and guide said pins, securing devices on said pins engaging said guidingplate and springs holding said securing devices in engagement with said plate, whereby any one of said pins may be removed by disengaging its securing device from the guiding-plate, a series of key-levers for operating said pins, and devices operated by said keylevers for setting said trailing arm in motion, substantially as described.

3. In a printing-telegraph, the combination with a trailing arm, of a series of longitudinally-movable pins for arresting said arm, a guiding-plate provided with slotted portions engaging said pins, and recesses adjacent to said slotted portions, collars on said pins, engaging said recesses, springs on said pins, holding said collars in said recesses, a series of key-levers operatively connected with'said pins, and devices operated by said key-levers for setting said arm in motion, substantially as described.

4:. In a printing-telegraph the combination with the trailing arm, of a series of longitudinally-movable stop-pins for arresting said arm, a lower guiding plate provided with guiding-apertures for said pins, an upper guiding-plate provided with open guidingslots engaging said pins, and a series of recesses on its under side adjacent to said slots, a collar on each pin engaging one of said recesses, and springs surrounding said pins extending from said collar to a part connected with the pin for holding said collars in said recesses and holding said pins in their lowest positions, a series of key-levers for operating said pins, and devices operated by said keylevers for setting said arm in motion, substantially as described.

5. In a printing-telegraph, the combination with the trailing arm and means for setting the same in motion, of a series of stop-pins for arresting said arm, and a pair of spring contact-arms carried by said trailing arm and adapted to embrace said stop-pins, substantially as described.

6. In a printing-telegraph, the combination with the trailing arm, means for setting the same in motion and a printingsector operatively connected with said arm, of a series of stop-pins for arresting said arm, a pair of spring contact-arms carried by said trailing arm adapted to embrace one of said pins, and a horn, carried by said trailing arm and movable with respect thereto, provided with a horizontally-tapered portion adapted to be projected between two adjacent pins to determine the position of said arm and sector, substantially as described.

'7. In a printing-telegraph the combination with a vertically-disposed spindle provided at its lower end with a reduced bearing portion, a support for said bearing portion, a mercurycup surrounding said bearing portion and means for adjusting said cup vertically,whereby said cup can be adjusted up against the bottom of the spindle to lock the same and prevent the spilling of the mercury, substantially as described.

8. In a printing-telegraph the combination with the vertically-disposed spindle, a printing-sector and a trailing arm mounted thereon; operating devices for said spindle and key-levers for controlling the operation of said trailing arm and sector, said spindle having at its lower end a reduced bearing portion, of an externally-tl1readed support for said bearing portion and a mercury-cup surrounding said bearing portion and having a threaded aperture engaging said support whereby said mercury-cup can be rotated to move it into contact with the bottom of the spindle to lock said spindle and prevent the spilling of the mercury, substantiallyas described.

9. In aprinting-telegraph the combination with a spindle, a trailing arm and printingsector mounted thereon and means for operating and controlling said spindle, arm and sector, of a governor loosely mounted on said spindle, a friction device for connecting said.

governor and spindle and an adjusting device for said friction device for varying the friction between said governor and spindle, substantially as described.

10. In a printing-telegraph the combination with'a spindle, a trailing arm and printingsector mounted thereon, means for operating said spindle and means'for controlling said spindle, arm and sector, said spindle having a friction-flange, of a governor loosely mounted on said spindle adjacent to said frictionflange, a spring for holding said governor in frictional contact with said flange and means for adjusting the tension of said spring,sub stantially as described.

11. In aprinting-telegraphthe combination with a spindle, of a trailing arm mounted thereon and means for setting said trailing arm in motion, of a series of stop-pins for ar resting said arm, a horn mounted on said trailing arm and movable with respect thereto, said horn being adapted to be projected between two adjacent stop-pins, an operatingmagnet for said horn, an armature therefor and a flexible connection between said armature and said horn having a portion passing longitudinally through the axis of said spindle, substantially as described,

12-.'In aprinting-telegraph,the combination with a spindle having a portion provided with a pair of annular grooves, a trailing arm secured to said spindle, means for operating said arm, a printing-sector mounted on said spindle and movable longitudinally thereon, provided with two rows of type, a spring-arm secured to said sector and provided with a part engaging one or the other of said annular grooves of the spindle, a series of longitudinally-movable stop-pins for arresting thetrailing arm, a series of key-levers controlling said stop-pins, a roller secured to the printing-sector, and a slide movable toward and from said spindle, provided with oppositely-inclined devices for engaging the roller carried by the said sector, substantially as described. I

13. In a printing-telegraph the combination with a printing-sector, a series of spring-arms carried thereby and types secured to said spring-arms, of a printing-plunger mounted in guides and operating devices for forcing said plunger into engagement with said typearms, said plunger being connected with its operating devicesso asto be free to move by inertia with respect to said operating devices, substantially as described.

14. In a printing-telegraph,the combination with the trailing arm, means for operating the same, a type-sector operatively connected with said arm, a series of stop-pins for arresting said trailing arm, a series of key-levers for operating said stop mechanism, a paper-support, rollers for carrying an inking-tape, driving mechanism for one of said rollers, including a friction-wheel engaging said roller, on one face thereof and a spring engaging the roller on the opposite face and holding it in frictional engagement with said friction-wheel, substantially as described.

15. In a printing-telegraph the combination with a spindle, of a trailing arm mounted thereon, a catch normally retaining the said trailing arm in its zero position, key-levers IIO operatively connected with said catch for releasing the trailing arm, a series of stoppins for arresting said trailing arm, a horn mounted on the trailing arm adapted to be projected between two adjacent stop-pins a magnet for operating said horn, an armature for said magnet, a flexible connection between said armature and said horn having a portion passing-through the axis of said spindle a second magnet for returning said trailing arm to its zero position, an armature for said magnet mounted upon a rotary axis and connections between said armature and said trailing arm, a third magnet, two armatures therefor, a movable arm adapted to be moved by one of the said armatures, connections between said printing mechanism and one of said armatnres for operating the same, a 1n ovable contact for closing the line-circuit, connections between said movable contact and the other of said two armatures, a second movable contact device for switching out the said third magnet from the battery-circuit and introducing the second magnet having the rotating armature and connections between said second contact and said movable arm, substantially as described.

16. In a printing-telegraph the combination with a spindle, of a trailing arm mounted thereon, means foroperating said arm, a catch normally holding the trailing arm in its zero position, key levers operatively connected with said catch for releasing the same, a pivoted frame extending beneath all the key-le-

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