US743011A

US743011A - Telegraphic transmitting attachment for typewriters.

Info

Publication number: US743011A
Application number: US14075303A
Authority: US
Inventors: Albert E Morelock
Original assignee: SAMUEL W LAKIN
Current assignee: SAMUEL W LAKIN
Priority date: 1903-01-27
Filing date: 1903-01-27
Publication date: 1903-11-03
Anticipated expiration: 1920-11-03

Description

PATEN'IED'NOV. 3, 1903.

A. E. MORE LOCK. TELEGRAPHIG TRANSMITTING ATTACHMENT FOR TY PE WRITERS.

no upbnL.

APPLICATION FILED JAN. 27, 1903.

Witnesses rm: cams FEYERS co. Pmroumo" WASNWGTON, u. c.

No. 743,011. A PATBNTED NOV. 3, 1903.

A. --E. MORELOOK.

.TELEGRAPHIG TRANSMITTING ATTACHMENT FOR TYPE WRITERS.

- APPLIOATION FILED JAN. 27,1903.

N0 MODEL.

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Wfinesses inventor I I wy/flay n4: Nonms PETERS co. wnomu'ma, wnsumumn. n, c.

.1 Na. 743,011. PATENTEDNOV. 3, 1903.

A. E. MORELOGK.

TELEGRAPHIG TRANSMITTING ATTACHMENT FOR TYPE WRITERS.

APPLICATION FILED JAN. 27,1903. I 1 NO MODEL. 5 SHEETS-SHEET 3.

Witnesses I t W 1 BWY m: nonms PETERS cu, PHOTO-LING wasnmm'om u. c.

A. E. MORELOGK.

PATENTE D NOV. s, 1903;

TELEGRAPHIG TRANSMITTING ATTACHMENT FOR TYPE WRITERS.

APPLICATION FILED JAN. 27,1903.

5 SHEETS-SHEET 4.

THE norms Perms co. muro'umo WASHINGTON n. c.

Way I N No. 743,011. PATENTED NOV. a, 1903.

- A. E. MORELOGK.

TELEGRAPHIG TRANSMITTING ATTACHMENT FOR TYPE WRITERS.

APPLIOATION FILED JAN. 27,1903. A N

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N0 MODEL.

Inventor W/Znesses Aft y rue Ncnms PETERS co. Pnofo umou WASHINGTON. n. a

name s me s i'atnted November 6, 1903 "PATENT Qrrrcn.

ALBERT E. MORELOOK, or TOPEKA, KANSAS, ASSIGNOR or oNE-nA'L-F To sAMUEL'w. LAKIN, or TOPEKA, KANSAS.

' TELEGRAPHIC TRANSMITTING ATTACHMENT FOR TYPE-WRITERS.

SP EGIFICATION forming part of I etters Patent No. 743,011, dated November 3, 190 3 Application filed January 27, 1903. Serial No. 140,753- (No model-I To a'ZZ whom it may concern.

Be it knownth at I, ALBERT E. MORELOCK, a citizen of the United States of America, residing at Topeka, in the county of Shawnee and State of Kansas, have invented new and useful Improvements in Telegraphic Transmitting Attachments for Type-Writers, of which the following is a specification.

The invention relates to automatic or semiautomatic telegraphic transmitters-that is to say, machines adapted to transmit telegraphic signals by the ordinary make-andbreak or Morse method, a single stroke of a key-sufficing to put in operation mechanism which automatically transmits the dots and dashes which denote the letter or other character or combination of characters on that key without further effort on the part of the operator. Although the present invention may be constructed wholly separately from a type-writer, it is preferable to construct it in connection therewith or attach it thereto, as it enables the operator to retain a duplicate of and verify the message transmitted.

The objects are to provide an apparatus of this nature which may be readily attached to any ordinary type-writer without extensive alterations of the type-writer and Without interfering to any degree with the free and unfettered use thereof and which is simple and economic in construction and operation and has less number and less complicated parts than machines of a similar nature heretofore devised. I

The invention consists of the novel combination, arrangement, and disposition of the features of the invention in their normal position, some of the parts being shown in section, with a side View of the make-and-break wheel. Fig. 2 represents the other side of the make-and-break wheel and the adjoining parts. In this view the parts are shown in their positions when the make-and-break wheel is m aking a revolution. Fig. 3 is a front view of the makeand-break wheel and the adj oinin g-parts. Figs. land 5 are cross-sections of the make-and-break wheel through the line 4 5, Fig. 1, the View in Fig. erepresenting the position when the wheel is at rest and Fig. 5 representing the position of the dog when released from the lever T. Figs. 6, 7 and 8 show a modified form of the dog. Fig. 6 is a side view of the wheel with the modified form of dog, and Figs. 7 and 8 are cross-sections through the line 7 8, Fig. 6, Fig. 8 representing the position of the dog when the wheel is at rest and Fig. 7 representing the position of the dog when released from lever T. Fig. 9 is a side elevation of the machine, the near side of the frames being removed, as if shown through the line 9 9, Fig. 10, and other parts being shown in section, as indicated. Fig.

10 is a plan or top view of the transmitting attachment and the lowerportions of the typewriter, as if taken through the line 10 10, Fig. 9. In this view the springs 9 9 are not shown. Fig. 11 is a transverse section of the lower portions of the type-writer, taken through. the line 11 11, Fig. 9. Fig. 12 is a View of the switchboard, by which-the attachment is connected to the type-writer, part thereof being shown in section. Figs. 13, 1a, and 15 are sectional views of the shift contact-bar E with a portion of the key-lever to show the operation thereof. Fig. 13 shows the position of the shift when only the telegraphic transmitter is to be operated, Fig. 14c the position when both "type-writer and telegraphic attachment are to be operated, and Fig. 15 when only the type-writer is to be operated. Fig. 16 is a 'modified form of constructing the means for releasing, moving, and arresting the makeand-break wheel. Fig. 17 is a partial side view of Fig. 16. Fig. 18 is a section through the line 18 18, Fig. 16. Fig. 19 represents a form of make-andbreak wheel when it is e sired that for short letters, for instancef wheel shall not make a complete revolution each time that it is released.

Like letters and numerals of reference refer to like or corresponding parts throughout the several views. I

For a clear understanding of the invention reference should first be made to Figs. -1 to 8, inclusive. In these views only a single key, key-lever, make-and-break wheel,.and connecting mechanism are shown, but by first gaining a full comprehension of the construction and operation of a single key and its connections it will thereafter be easy to see how a series of such keys, levers, make-and-break wheels, &c., may be assembled in a single compact machine. Henc for the present reference is made only to Figs. 1 to 8, inclusive.

K is the finger-key of a type-writer.

LB is the local battery, from which electrical current is furnished for the motor D and electromagnet 15.

1 is the make-and-break wheel, constructed very much like corresponding wheels of similar devices, consisting of a main body portion of conducting material, with blocks of insulation 2 2 in the periphery, the blocks of insulation being so disposed on each wheel as to alternately make and break the mainline circuit as the wheel revolves, the periphery being in contact with a bar 5, which forms one terminal, the wheel forming the other terminal, of the main line. In the drawings the wheel shown is designed to transmit the Morse signal for the letter J viz., The wheel has a hub 1 to hold it in a permanent plane and is loosely mounted on the driving-shaft 3, which is in turn driven by motor D, being connected thereto by the belt 15. The motor D is connected to. the local battery'LB by suitable connections, as by wires 1) Z) and a a, from which it may be disconnected by the switch The contact end of the bar 5 bears lightly against the periphery of the make-and-break wheel and has a slight projection 5 to engage the corresponding depression 5 in the wheel 1. It is pivoted to the rack 6, which is connected to the binding-post 7, properly insulated at 8 from the frame 4.

9 is a light coil-spring connecting the bar 5 and frame 4, to which it is attached by screw 1.2 and nut 11. It is insulated from bar 5 by a suitable thread 10.

T is the releasing and stopping lever, pivoted 011 the shaft 13. One arm carries the armature 14 within the magnetic field of the electromagnet 15. Theother arm has a hook or a nose Tto engage the dog G, located on one side of the make-and-break wheel and consisting of the arm 16, pivoted to the lugs 18 18 at 17 17. The upper end of the arm 16 is beveled or bent outwardly, so as to engage the nose T. The fiat spring 19, attached to the side of the wheel, bears against the arm 16 and tends tomove said arm toward the wheel. Another arm 21 of the dog extends into and through the aperture 20 in the wheel,

the end thereof 21 being so adjusted,as clearly appears in Figs. 4, 5, that when the nose T engages the dog said end is inside the wheel, but when the nose T is withdrawn from the dog the spring 19 moves the arm 16 inwardly and correspondingly moves the end 21 outwardly from the other side of the wheel. (See Figs. 4, 5.) The lug 20 limits the movement of the dog. A modified form of this dog is illustrated in Figs. 6, 7, 8. In this form instead of pivoting the dog and using a separate spring 19 the arms 16 21 are mounted on a spring 22, which is countersunk into the wheel, as shown, by the recess 23, the spring being attached to the wheel at 22 and tending to throw the arms in the same direction, as shown in Figs. 4, 5, the inner side of the recess limiting the movement of the dog. 24 is a buffer provided with adjusting-screw 25 to regulate the stroke of the lever T. The arms 26 26 26 are permanently attached to the driving-shaft 3 by the set-screw 27 in the hub 28, from which said arms radiate. These arms are located on the side of the Wheel 1 from which the arm 21. projects. They may brush lightly against said wheel, but in any event do not move said wheel. They arelong enough to engage the end 21 of the dog G when the 'end projects from the side of the wheel and into the plane of the arms, as in Figs. 5, 7, but do not engage the end 21 when the end is drawn back into the wheel and out of the plane of the arms 26 26, as in Figs. 4, 8.

The shaft 3 is connected to the main line through the brush 29, which is insulated, as at 30 30, from the frame 4 and connected to the binding-post 31.

Under the key-lever K is the shift contactbar E, which will hereinafter be more fully explained, and attached to the key-lever immediately over the bar E is a piece of conducting material f, and these parts are so arranged, as will hereinafter appear, that when the key is struck the contact-piecef touches the barE,thereby closinga circuit, hereinafter to be described, of which said piece f and said bar E are opposite poles. Normally these parts are out of contact. Referring to Fig. 1, it will be seen that the'contact-piece f is connected to one side of the battery LB through wires m c, electromagnet 15, and wire a, while the contact-bar E is connected to the opposite side of the battery LB through wire I), thus forming a circuit normally open at f E. i

In the drawings the telegraphic attachment is shown as applied to a standard Remington type-writer in which the key-levers are of wood. In this style of machine the wire m may be attached along the side of the keylever. With other styles of type-writers the attachments may be modified without departing from the spirit of the invention.

The various circuits may be traced as follows: Referring to Fig. 1, the main-line circuit may be traced, commencing with binding-post 31, which is connected to one side of the main-line circuit, thence through brush 29,

shaft 3, m'ake-and-break wheell, contact-bar 5, and binding-post 7, which is attached to the other side of the main-line circuit. This circuit is normally open between the contactbar 5 and the make-and-break wheel by reason of said bar resting normally against one of the blocks of insulation 2, the end 5 nor mally engaging the corresponding recess 5 therein. This circuit will be closed when the make-and-break wheel revolves, as the conducting portions of the periphery are brought into contact with said bar 5, and it is this al-j ternately opening and closing of the mainline circuit by which the ordinary Morse signals are transmitted over the main line. The two sides of the motorD are connected up with the two sides of the local battery LB by the wires a a and I) b, respectively. The remaining circuit, which will herein be referred to as the key-circuit, will be traced, commencing at the contact-piece f on thekey-lever K, thence through wires m c, electromagnet 15, wire a, local battery LB, wire b, and contactbar E. This circuit, as heretofore explained, is normally open between the contact-piece f, on the key-lever K'and the contact-banE and will be closed when these two contactpoints are brought together, aswhen the key is struck in the usual manner.

In Figs. 1 to 8, inclusive, except Fig. 2, the parts are shown in their normal position, ready to be. operated, the machine being properly included in the main line through the binding-posts 7 31. The switch 33 being open, the current from the localbattery moves the motor D, which in turn revolves the shaft 3 and arms 26 26 26, thereto permanently attached, so that the shaft 3 and arms 26 26 26 constantly revolve while the machine is being operated. The make-and-break wheel 1, however, being loosely mounted on the shaft 3 does not normally revolve therewith, but is held in its normal position of rest, as shown in the figures referred to, by the nose T of the lever T, which normally engages the dog G, and by the bar 5, whose end 5 normally engages the recess 5 in the insulation 2. The key-circuit being normally open, the electromagnet 15 is not energized, so that the nose T of lever T is normally held in engagement with said dog G by the retractile spring 9.

Now the machine being ready to be operated, the arms 26 26 26 and shaft 3 being in constant motion the operation of the apparatus is explained as follows: The key on the key-lever K is given a sharp quick stroke, which causes the piece f thereon to come in momentary contact with the bar E, closing momentarily the key-circuit, and thus energizing momentarily the electromagnet 15, which draws to it the armature 14, thus withdrawing the nose T of the lever T from the dog in the direction of its normal tendency,

so that the end 21 thereof protrudes beyond other, is controlled.

the side ofthe make'and-break wheel and extends into the plane of the revolving arms 26 26 26, one of which immediately engages said end 21, carrying the make-and break wheel around with them, and as the wheel revolves the insulated and conducting portions of the periphery thereof come alternately in contact with the contact-bar 5, thus alternately opening and closing the main-line circuit and transmitting over the main line the signals, which are received on a sounder or tape or by any other means. In case the speed of the revolving shaft 3 is high the signals must be received on a tape or other 'mechanical means, while if the speed is low the signals may be received by sound in the most usual manner. The closing of the key-circuit being but momentary, the armature 1 1 is released from the electromagnet immediately, and the lever T and nose T are immediately brought back to their normal position by the retractile spring 9; but even during this momentary interval the dog G on the make-andbreak wheel has escaped from its normal position; but as the wheel revolves said dog is again brought into engagement with said nose T, the upper end of the arm 16 being beveled or bent outwardly, so as to allow the nose T to enter between said arm and the side of the wheel, thus drawing in the end 21 from the plane of the arms 26 26 and stopping the makeand-break wheel in its normal position. The momentum of the wheel insures the bringing of the dog G into complete engagement with the nose T and the end 5 into engagement with the recess 5".

The signal may be rapidly repeated by simply holding the key-lever K down, so as to keep the key-circuit closed. The make-andbreak wheel will continue to revolve with the shaft 3 and arms 26 26 until the key-circuit is opened, releasing the armature 14: and lever T. In this manner a station may be called.

If the apparatus is to be stopped, the switch 33 is shifted so as to cut out the motor D from local battery LB, and the switch 32 is shifted so as to cut out the apparatus from the main line, leaving the main line closed.

It is now plain that in constructing an apparatus for practical use it is necessary to have for each key-lever K which represents aletter of the alphabet, a figure, or apunctuation-mark a separate make-and-break wheel,

on which the blocks of insulation shall be so arranged as to cause the signal to be transmitted over the main line which denotes that letter, figure, or punctuationmark, and it is also plain that each key must be provided with separate mechanism whereby its corre sponding make -'and -break wheel, and none In other words, for each key are provided a separate key-circuit, including a separate electromagnet, a separate lever T, and a separate makeandbreak wheel corresponding to saidkey and having its dog G mounted thereon, while a separate set of arms 26 26 26 is also provided for each lTZE wheel. Of course it is also plain to those familiar with electrical circuits and connections that a single battery may furnish current for all of the separate key-circuits.

A preferred form of embodying the invention in a compact practical machine is illustrated in Figs. 9 to 15, inclusive, to which reference will now more especially be made.

The

shafts

3 and 13 have their bearings in the frame 4 of the apparatus, the shaft 3 being connected to the motor D by a series of differential pulleys P P and belt 19, whereby the speed of the shaft 3 may be varied. The series of make-andbreak wheels 1 1 1 are loosely mounted on said shaft. There is a make-and-break wheel for each key, the blocks of insulation being so disposed on each wheel as to transmit over the main line the signal which denotes the letter, figure, or punctuation-mark on that particular key, as heretofore explained. Each make-and-break wheel may be provided with a separate contact-bar 5, although all of the contact-bars are electrically connected to the binding-post 7 through the bracket 6, to which they are pivoted. Also for each wheel are provided a separate set of arms 26 26 26, all permanently attached to the shaft 3, a dog G, lever T with armature 14, and spring 9 and electromagnet 15 15 15. It is preferable to use the solenoid type of electromagnet, for the reason that they can be compacted together in less space than other types. Thus in the preferred form of the apparatus these solenoids are arranged in three rows, one solenoid opposite to each makeand-break wheel, the armature on whose lever T is suspended within the magnetic field of that particular magnet. As shown in this arrangement, the lengths of arms of said levers T, to which said armaturcs are attached, vary in order to accommodate each armature to its proper solenoid.

The local battery LB may consist of a number of suitable cells stowed away in the bottom of the frame 4, while the motor D shall be located within the frame, so as to make the necessary connection with the shaft 3.

In Figs. 9 and 10 the brush 29 is shown as brushing against the side of the pulleys P and attached to the side of the frame 1 and connected to binding-post 31 through wire 29. The exact location of the brush is not material, so long as it connects the periphery of the wheel 1 with the binding-post 31 or with one side of the mainline with the least possible resistance.

1 Each key-lever K is provided with a con tact-piece f, which is connected to one pole of that electromagnet provided for the makeand-break wheel which corresponds to that key,while the barE, extending underneath all of said key-levers, is electrically connected to the other pole of that electromagnet, and in this connection is included the battery LB, so that for each key there is a circuit controlled by that key, as will soon be explained in detail. The manner of making these conment of the key-levers.

nections so that each key controls that circuit in which its corresponding electromagnet is included is as follows: Over the rear portion A of the frame of the type-writer, immediately over the point where the key-levers K K are pivoted, is a switchboard consisting of the under frame 34:, made of insulating material and attached to said frame by the brackets 34 34 and provided with a series of tubes of conducting material, one tube for each key-lever, and connected to said lever by a suitable conductor, as by wire 39 40. This location is desirable because of the fact that said tubes may be electrically connected to the wires m m on said key-levers, respectively, at this pivotal point by a slightly pliable wire without interfering to any serious degree with the free and unfettered move- The upper frame 36 of the switchboard, also made of insulating material, is provided with a series of plugs 37 37, one for each tube 35, and made of conducting material. Each plug has a bindingnected, as by wires 0 c c, to the electromagnet corresponding to the key-lever, to which said binding-post is also connected through its plug and tube. The contact-bar Emay also be connected with the local battery LB through said switchboard by and through the wires 12' 12 and binding-post 38 and associated plug and tube, this plug being located over the lever carrying the spacing-bar. A longitudinal view of a portion of the detached switchboard, giving a longitudinal central section of the under frame 34 and bracket 34, is shown in Fig. 12.

' The electromagnet 15 is connected to binding-post 38 by the wire 0 and to the battery LB by wires a a. The electromagnet 15 is connected to binding-post 38' by wire 0 and to local battery LB by wires CL CL. Electromagnet 15" is connected to binding-post 38 by wire 0 and to the local battery LB by wires a a.

It is now seen that each key-lever is pro vided with a separate circuit, which it controls, in each of which circuits are included an electromagnet'and a source of electrical energy, although of course the source of electrical energy may be common to all the circuits. It is understood, of course, that the electromagnet which is included in any given circuit is that provided for that make-andbreak wheel which corresponds to the key which controls that particular circuit. Thus we may trace the circuit which is used when sending the letter J, commencing with the contact-piecef on the J key-lever, thence by wires 1% 39, (see Fig. 11,) binding-post 38", and connecting plug and tube, wire 0, electromagnet 15, wires a a, local battery LB, wires 1) b, binding-post 38, and connecting plug and tube, wire 17, contact-bar E. This circuit is normally open between the piece f and the contact-bar E, but may be closed by striking the key of that key-lever in the usual 9C post 38 38 38", and each binding-post is conmanner. \Ve may trace-the circuit which is used when transmitting the letter on the key next to the left of the key for J, commencing with the piece f on that key-lever, thence through wires m 40, (see Fig. 11,) bindingpost 38", wire a, electromagnet 15, wires a a, local battery LB, and return to contact-bar E by the same route as in the case of the key circuit for the letter J, just traced, and in similar manner the key-circuit for each key may be traced through its corresponding electromagnet, while the local battery LB and contact-bar E and the connections between the local battery and said contact-bar E are common to all said keycircuits. It is seen by reference to Fig. 11 that the levers 52, which carry the spacingbar, have no contact-piece f, so that no signal is transmitted when the spacing-bar is operated. i

The eccentric shift-bar E has three steps. It consists of two bars 45 46, mounted on the square hubs 41 42, which are permanently attached to the shafts or pintles 43 43, which have their bearings in the side of the typewriter frame. The bar 45 extends farther from the said pintle than the bar 46, the former almost touching the contact-pieces f f, while the latter allows the key-bars to make the full stroke, only bringing the pieces f f in contact with the bar 46 at the lowest point of the stroke, as shown in Fig. 14. The two bars are fixed on adjoining sides of the hubs, The fiat spring 47, mounted on the lug 48, bears against the sides of the square hub 42', so as to hold the bar firmly in any position to which it may be shifted by means of the handle 44, which is merely the pintle 43 extended and bent. In nearly all type-writers there are more or less loose joints between the keylevers and the type-barsthat is to say, the key-lever moves some slight distance before all the slack is taken up and before the type-bar is caused to move. This is taken advantage of in the first position of the bar, (shown in Fig. 13,) for the key-levers are required to move but a slight distance to come in contact with the bar 45. Should it be necessary, the tap h of the connecting-rod H could be slightly loosened to allow the requisite play of the key-lever. In the secondary position of the eccentric-shift contact-bar (shown in Fig. 14) the key-levers are permitted to make their full stroke, but touching also the bar 46, while in the third position both

bars

45 and 46 are turned out of the way of the co11tact-pieces f f, and no contact is made. In the first position only the telegraphic transmittingapparatus is operated. In the'third position onlythe type-writer is operated, while in the second position both telegraphic transmitting apparatus and typewriter are operated.

Thetransmitter is connected up with the mainline of the telegraph-circuit through the binding-posts 7 31. The transmitter is conthat particular key.

nected to the type-writer by the switchboard SB. The 32 switch of the main line ML is opened as shown ,to divertthe current through the transmitter, and the current from the local battery LBis applied to the motor D by opening the switch The shaft 3 with its arms 26 26 are caused to revolve, the speed thereof being regulated by the variable-speed gearing V. The driving-shaft3 with its sets of arms 26 26 constantly revolve while the telegraphic transmitter is in operation. The other parts are at rest in their normal positions, ashereinbefore repeatedly explained. If it is desired to use both type-writer and telegraphic transmitter, then the eccentric-shift contactbar E is turned to the second position, as shown inFig. 14. If it is desired to use only the transmitter, the eccentric is turned to the first position. (Shown in Fig. 13.) If it is desired to use only the typewriter, the eccentric E is turned to the position shown in Fig. 15, or the eccentric being in the second position the switch 33 or the switch 32 could be shifted to place the transmitter out of commission, although when it is desired to so place the transmitter out of commission while making corrections or only for a short interval without stopping the motor or connecting the main line the eccentric would best be used.

The operation is now readily understood. Upon striking the various keys on the keyboard the various make-and-break wheels corresponding thereto, respectively, are caused to revolve and transmit the signals denoting the various letters, figures, and punctuationmarks or other characters upon the keyboard. In other words, when any given key is struck in the ordinary manner of operating a typewriter that circuit is closed which includes that electromagnet which is provided for that makeand-break wheel which corresponds to In operating both the type-writer and the transmitter the signals transmitted correspond to the character imprinted on the sheet on the type-writer platen. In the modified form shown in Figs. 16 to 18, inclusive, the arms 26 26 26 are each provided with trolleys or rollers 50 5O 50, having their bearings in the lugs 51 51 on said arms and rolling rather firmly against the side of the make-and-break wheel. A lug projects from the other side of the make-and-break wheel, as shown at 49, to engage the nose of the lever T. When the lug 49 is released from the nose of the leverT, the make-and break wheel is caused to revolve by the friction of the rollers 51 51. i

There in the case of letters indicated by short signals, as in case of the letter e,

which 'is indicated by a single dot, it is desired that the make-and-break wheel shall not be required to make the complete revolution,

this desire may be fulfilled by grouping a and recesses 5". This form is illustrated in Fig. 19, which represents the make-and-break wheel designed for the letter E.

Of course it is understood that, if desired, the key-levers K could be mounted in the frame 4 of the telegraphic transmitter in order to construct a compact telegraphic transmitter not designed as an attachment to a type-writer, and there may be other varia tions from the exact description herein and in the drawings without departing from the spirit of the invention.

What I claim as new, and desire to secure by Letters Patent, is V l. A telegraphic transmitter consisting of the combination of a frame; aseries of makeand-break devices mounted therein representing the various telegraphic signals, connected up with the opposite poles of the telegraphic circuit, whereby the circuit will be closed and opened as said devices are actuated; actuating mechanism for said devices; a series of keys corresponding to said makeand-break devices respectively; a series of electric circuits, one for each make andbreak device and its corresponding key, each circuit including an electromagnet, whereby the make-and-break devices are controlled by their respective corresponding keys.

2. A telegraphic transmitter consisting of the combination of a frame; a series of disks loosely mounted therein representing the various telegraphic signals, and adapted as they revolve to open and close the telegraphic circuit; actuating mechanism for said disks; a series of keys corresponding to said disks respectively; a series of electric circuits, one for each key and its corresponding disk, each circuit including an electromagnet, whereby the disks are controlled by their respective corresponding keys.

3. A telegraphic transmitter consisting of the combination of a frame; a series of disks loosely mounted therein, normally stationary, representing the various telegraphic signals, and connected up with the telegraphic circuit, whereby as said disks revolve said circuit is opened and closed; actuating mechanism for said disks; a series of releasing and stopping devices for controlling said disks; a series of electromagnets, one for each releasing and stopping device, for controlling the same; a series of local electric circuits, each electromagnet being included in a separate electric circuit; and a series of keys corresponding to said disks, respectively, for controlling said respective local electric circuits.

4. A telegraphic transmitter consisting of the combination of a frame; a series of disks loosely mounted therein, normally stationary, portions of the surface of said disks being alternately of opposite quality as to electrical conduction or insulation; brushes bearing against the surface of said disks; electrical connections with the telegraphic circuit whereby said telegraphic circuit is opened and closed as said disks revolve, said disks,

portions, and connections and brushes being so arranged as to represent the various telegraphic signals; actuating mechanism for said disks; separate releasing and stopping devices for each disk; a separate local electric circuit including an electromagnet foreach releasing and stopping device for controlling the same;

and a series of keys corresponding respectively to said disks for controlling said local electric circuits respectively; whereby said disks are controlled by their respective corresponding keys.

5. A telegraphic transmitter consisting of the combination of a frame, a series of disks loosely mounted therein, of conducting material, a series of insulating-blocks arranged in the periphery of each disk so that each periphery represents one of the various telegraphic signals; brushes bearing against said peripheries, said brushes and said disks being electrically connected to opposite poles of the telegraphic circuit; actuating mechanism for said disks; a separate releasing and stopping device for each disk; a separate local electric circuit including an electromagnet for each releasing and stopping device for controlling the same; a series of keys corresponding respectively to said disks for controlling said local electric circuits respectively; whereby said disks are contrplled by their respective corresponding keys.

6. A telegraphic transmitter consisting of the combination of a frame; a series of disks loosely mounted therein, of conducting ma terial, and a series of insulating-blocks arranged in the periphery of each disk so that each periphery represents one of the various telegraphic signals; brushes bearing against said peripheries; said brushes and said disks being electrically connected to opposite poles of the telegraphic circuit; a shaft mounted in said frame and actuating mechanism therefor; a series of releasing and stopping levers, one for each disk; devices on said disks and on said shaft adapted to engage said releasin g and stopping levers and to cause said shaft to revolve-said disks, the motion of each disk being controlled by the lever provided therefor; a series of local electric circuits, one for each releasing and stopping lever, and each circuit including an electromagnet, for controlling said levers; and a series of keys corresponding to said disks respectively, for controlling said local electric circuits; whereby said disks are controlled by the movement of said keys respectively.

7. A telegraphic transmitter consisting of the combination of a frame; a driving-shaft arranged therein; actuating mechanism for said shaft; a series of disks of conducting material loosely mounted on the shaft, and insulating-blocks arranged in the periphery of each disk, so that each periphery represents one of the various telegraphic signals; brushes bearing against said peripheries; said brushes and said disks being electrically connected to opposite poles of the telegraphic cir- ICC cuit; a dog on each wheel, tending naturally to engage the shaft, but normally held out of engagement therewithbya releasingand stopping lever; a series of releasing and stop ping levers, one for each disk and engaging the dog thereon, the lever and dog being so arranged that when said dog is released from said lever,said dog engages the driving-shaft, causing a revolution of the disk; a series of electric circuits, one for each lever and each circuit including an electromagnet; an arm ature on each lever adapted to move within the magnetic field of its proper electromagnet; a source of electrical energy for said electric circuits; anda series of keys corresponding to said disks respectively for controlling said circuits; whereby said disks are controlled by the movement of their corresponding respective keys.

8. The combination of a type-writer and a telegraphic transmitting attachment therefor consisting of a frame; a series of devices mounted therein corresponding to the keys of the type-writer and representing the various telegraphic signals and adapted to influence the current in the telegraphic circuit; a series of electric circuits, one for each key of the type-writer and its corresponding device,each circuit including an electromagnet, whereby said devices are controlled by the respective corresponding keys of the type-writer.

The combination of a type-Writer having keys, and a telegraphic transmitting attachment therefor consisting of the following combination: a frame; a series of make-andbreak devices mounted therein corresponding to the keys of the type-writer and representing the various telegraphic signals, con nected up with opposite poles of the telegraphic circuit, whereby the circuit will be opened and closed as said devices are actuated actuating mechanism for said devices; a series of local electric circuits, one for each make-and-break device and its corresponding key, each circuit including an electromagnet for controlling said make-and-break device; means for producing current in said local circuits; whereby the make-and-break devices are controlled bytheir respective corrresponding keys.

10. The combination with a type-writerhaving keys and key-levers, of a telegraphic transmitting attachment therefor, consisting of a frame; a driving-shaft ar 'anged therein and actuating mechanism therefor; a series of disks of conducting material loosely mounted on the shaft, and insulating-blocks arranged in the periphery of each disk so that each di'sk represents one of the various telegraphic signals; brushes bearing against said peripheries; said brushes and said disks being electrically connected to opposite poles of the telegraphic circuit; a series of releasing and stopping levers; a device on each disk to engage the said lever whereby the motion of said disks is controlled by said levers; a series of electric circuits controlled respectively, by the movement of the key-levers of the typewriter, each circuit including an electromagnet; an armature on each lever adapted to move within the magnetfield of the electromagnet corresponding thereto; a source of electrical energy for said local circuits; whereby the movement of said disks is controlled by the movement of their corresponding respective key-levers of the type-writer.

11. The combination of atype-writerhaving keys and key-levers a telegraphic transmitting attachment therefor consisting of a frame; a series of devices mounted therein corresponding to the keys of the type-writer and representing the various telegraphic signals and adapted to influence the current in the telegraphic circuit; a series of electrical circuits, one for each key of the type-writer and its corresponding device, each circuit in-,

cluding an electromagnet for controlling said devices; means for producing current in said local circuits a contact-piece on each keylever connected to one side of the electromagnet; an eccentric shift contact device, connected to the other side of said electromagnet; said device being mounted on the typewriter frame, and extending underneath all the keys, and having a handle and a series of steps to permit correspondingly variable movement of the type-writer key-levers; substantially as described and for the'purposes specified.

In witness whereof I affix my signature in the presence of two witnesses.

ALBERT E. MORELOGK.

Witnesses JOSEPH GRoLL, Z. T. FISHER.