US920833A - System of telegraphy. - Google Patents

Description

R.- L. DEAN. SYSTEM OF TELEGRAPHY. APPLICATION FILED APR. 5. 1906.

R L. DEAN." I SYSTEM OF TELEGRAPHY. I APPLICATION FILED APR. 5. 1906. I 920 833, Patented May l, 1909.

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SYSTEM OF TELEGRAPHY.

APPLICATION FILED APR. 6,, 1906.

Patented May 4, 1909 6 SHEETS-SHEET 3.

R. L. DEAN; SYSTEM OF TELEGRAPHY. ALPPLIO. ATION FILED APR. 1906.

" Patented May 4; 1909.

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- Patented M5 4; 1909.

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R. L. DEAN. SYSTEM or TBLEGRAPHY. Arrmdulon rIL'nn APR. a. 1006. 920, ,1 a Patented May 4, 1909.

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' mfzw UNITED STATES PATENT orrioE.

ROBERT L. DEAN, or KANSAS CITY, MISSOURI, ASSIGNOR, Br 'MESNE ASSIGNMENTS. TO

- DEAN RAPID TELEGRAPH 00., A conPoRA'r oN OF Anraom TERRITORY.

SYSTEM or TELEGRAPHY.

Specification of Letters Patent.

- Patented May 4, 1909'.

To all whom it may concern:

Be it known that I, ROBERT L. DEAN, a citizen of the United States, residing at Kansas City, in the county of Jackson and'State of Missouri, have invented certain new and useful Improvements in Systems'of Telcg' raphy, of which the following is a specification.

My invention relates to the transmission ahd recording of electrical impulses for telegraph purposes in which the transmission is automatically accomplished through. the aid of perforated sheets, and wherein the messages are printed in page form. 5 The system embraces a transmitter which feeds the perforated sheets forwardly'step by step; a reciprocating contact device, form.- ing part of the transmitter, which is drawn over the. successive rows of character-holes in the sheets when the latter pause between each forward step; a receiver for feeding the paper to be printed upon, forwardly step by step as successive lines are printed thereon; a reciprocating recording device in thereceivcr for printing arow of characters upon the paper at each pause of the latter between steps, and means for synchronizing the movements of the contact and recording devices and the feed mechanisms of the transso mitt-er and receiver.

The irvention also embraces an alphabet or code containing twenty-six characters and a punctuating mark, any one of which may be printed by two type on the recording-device. As most of the characters may be printed by two impulses the time required to prepare a perforated sheet for a telegram and to transmit the latter is brief, and the consumption of battery power is reduced to aminimum.

In practice cach station is equipped with a trausnjiittcr and a receiver, the transmitter at one station being in circuit with the receiver at the other station, and for conven icncc and econom the two instruments at each station may be coupled to a single motor. While it is desirable to have motors which travel at the same rate of speed this is not an absolute necessity as the synchronizing mechanism will cause the receiver at one station, to operate in proper time with the ransmitter at. the other station.

Referring now to the accompanying drawings which illustrate the invention :---Figure 1 represents a plan view of the transmitter.

Application flied April 5, 1906. Serial No. 309,986.

Z is a vertical transverse section of same, taken on line II II of Fig. 1. Fig. 3'is a broken transverse section on line IIIIII of Fig. 1. Fig. 4 is a broken side elevation of the upper portion of the transmitter looking in the same direction as Fig. 3. Fig. 5 is a side elevation of the-contact'device forming part of the transmitter. horizontal section of same taken on line VIVI of Fig. 5. F ig. 7is a detail perspective view of the contact device. Fig. 8 is avertical transverse section of the receiver, taken on a line corresponding to IIII of Fig. 1. Fig. 9 is a side elevation of the recording de-. vice. Fig. 10 is a broken inverted plan view of the samc. Fig. 11 represents a diagram of two stations equipped with my apparatus which is connected for transmitting and receiving messages. Fig. '12 shows the alphabet in perforated characters. together with the characters of my alphabet and the letters and punctuation mark which they represent.

The apparatus of this invention is, preferably, arranged for actual work asshown in Fig. 1 1 so that a single line wire may be used to transmit and receive telegrams, and in or der that it may befully understood 1 will now proceed with a detailed description oi" said apparatus, the transmitter being first described. The frame of saidtransmitter comprises a base-plate 1, end-plates 2 mounted thereon and tie-rods 3 uniting the upper portions of said end-plates.

.4 designates a table located in the front portion of,tho frame to support the perfo- F ig. 6 is a broken 1 rated sheet 5 which passes overtwo conductors 6 7 separated by an insulating strip 8 extending the entire length thereof. Sheet 5 is provided with rows of character-holes 5. said rows being arranged in pairs with the character-holes of onev row arrangcrl with res cct to those in the companion row, as siiown, so that one roller of the contact device, hereinafter described, will not enter a perforat ion in one row until itscompanion roller leaves a perforation in the other low. Thus short circuiting, which would prevent the transmission of proper impulses to the rc ceivergvill be obviated. Said contact device consists of a cross-head 9 of nonconducting material, a plate 10 secured thereon and provided with stops 11, a shifting-nut 12 provided with lugs 13 and slidably arranged in the stops, a shifting-lever 14 for operating the shifting-nut, and a pair of arms 15 16 porting the conductors 6 and 7.

38 39 journaled in the end-plates.

carrying normal y held in a; depressed condition by tension springs 19; attached to the rearends of the arms and screw-eyes arranged in a bracket 20,t o which latter arm's 16 are pivotelly'secured. Nut 12 is provided with depending pins 21' and a centrally disposed slot 22 through which latter a screw 23- extends and enters plate 10. Lever 14 is fulcrumed upon and oscillates on said screw and is provided with a pair of eccentric shoulders 24 and straight shoulders. 25, the former of which alternately engage the pins and -thus shift the nut inopposite-direction's While the latter also alternately engage the pins and thus prevent accidental movement of the nut when the shifting-lever is at rest, see Fig. 6. The oscillatory movement of the lever is cona trolled by actuating mechanism hereinafter,

described and its movement is limited'by'its arms 26 27- striking stops 11. The contact device carries a push-bar 28 which aidsin.

synchronizingthe movements of the transmitter and the receiver as will hereinafter ap-.

pear, Said push-bar extends loosely thrgpgh the cross-head, and is held therein by a .0011- spring 29 secured at its. ends to the crosshead and a'collar 30 fixed to one end of the push-bar.

Cross-head 9 is reciprocably mounted-upon a pair of guide-rods 31 32secured at t eir ends to insulating blocks 33 34, fastened to the inner sides ofthe end-plates 2 and sup.

also carry circuit-breakers A and B, respectively, forming art of the synchronizer. Each circuit-brea er consists of a bell-crank lever 35 and a c0ntact-point 36, the former of which is normally held away from the latter by itsweighted end 37. Levers 35 are pivotally secured to lugs 35 and arranged in the path of push-bar 28 so that the latter will alwheels 4041 the former of which is driven by a friction-wheel 42 on a motor shaft 43 while the latterengagesand drives, in a reverse direction, a friction-wheel 44 fixed to one'end of Worm 39. The terminals of the worm threads are arranged out of alinernent with each other, as shown in Fig. 1, so that the-nut will pass out of engagement with one thread before it engages the opposing thread. Sa d nut is actuated upon reaching the end of 1ts right and left strokes by arms 45 46,

respectively, pivotally secured to blocks 33 34. Said arms are operated by a solenoid 47 which is actuated by electrical impulses timed by thesynchroniaer, as hereinafter described. The plunger48 of the-solenoid is pivotally secured to a comiecting-bar 49 antifrict-ion contact. rollers 17 18- Said blocks which in turn is pivotally secured to one arm of .an arregular-shaped lever 50 Iixed to a rocker-shaft 51 mounted in the end-plates 2. Theupper end-of lever 5O1s"secure( to arm minal is rovided with a" pawl 53, pivotally rollers '55 56 whereby the perforated. sheet is fed through the transmitter. In order that the perforatedshcetniny move forward stop by step without interference frmnrollers 17 18, the same. are raised from corrtactwitlr said sheet by their. outwardly-projacting spindlesv 18 alternately traveling upon inc ined arms 18 '18 extending from blocks 3334, respectively.- lloller is provided at its opposite ends with revcrsely-disposed ratchet wheels 57" 53, I respectively, the former of which is engaged by pawl 53 whercby .it is moved the distance of one too'th each time thcsolenoid is'energized; The teeth of with the rows of character-holes 5 so that each time the perforated Sh6Gl1.lSlI1OVOCl forwardl a. succeeding .pair ofrows will be -,brou it into osition upon conductors 6 and J an 'bencatli the contact rollers 17. and '18. The lengths of the-ste s are equalized by ratchet-wheel 58 and a eten't 59, which latteri's pivotally secured to the adjacent end- "is thrown into engagement with theratche'twheel by a tension-spring 61 when the free end of the detent is trip ed. Said detent .wheel by a pin 6 2 projecting laterally from the lower endof a trip-lever 63 fixed to rocker-shaft 51 so that the action of said trip-lever and lever 50 will be synchronous.

ing-bar 64. Thus when the f0(3(l-1 0ll(31' 1s turned by pawl '53 the dctent will be tripped sothat its shoulder '60 will engage ratchet wheel 58 and intercept its following tooth. After the actuating mechanism has turned the feed-rollers one-stop and the solenoid has become deenergized, said. actuating incchanisln is returned to normal by means of a rctractile spring 51 anda crank-am1-51 which The movements of crank-arm 51" are limited by stop-pins 51. I 1

The perforated sheet 5 is held in frictional contact with feed-roller .55, so that it will not slip thereon, by the feed-roller 56 which is journaled in bell-crank bearings 65 pivotally secured to the side plates by screws 66. The free ends of bearings 65 are held in a depressed position by a bow-s ring 67, the tension of which is regulated y an adjustingscrew 68 extending through an internallythreaded rod 69 secured in the end- )lates. One end of the shaft carrying feed-rollers 55 extends through one of the end-plates and is provided with a hand-wheel 7 0 whereby said.

45 by a connecting-bar 52,'a nd its lower tersecured t i'ereto, for actuating a pair of foodis normally supported aiove its ratchet Lever 63-is secured to arm 46 by a connectlatter is fixed to one end of rocker-shaft 51.

ratchet-wheel 57 are spaced to correspond.

plate and providedwit-h a shoulder 60 which.

feed-roller is turned to start the front edge of the erforated sheet between the feed-rollers.

, receiver consists of a base-plate 71, end

plates 72 mounted thereon, and tier-eds. 73 uniting the upper portions of said plates.

74 designates a relief paper mounted upon a shaft 75 journaled in brackets 76 secured to the end plates. One end of said roll is passed'between a pair of distributing-rollers 77 78 and a pair of feed-rollers 79 80, the movements of which latter are synchronous with those of rollers 55 56. In its passage between rollers 77 78 the paper is treated with a chemical solution in order that the messages may be printed thereon, the solu-' tion employed for this purpose being contained in a receptacle 81 from which it is carried to the paper by roller 77 which has its lower portion submerged therein. solution evenly distributed throughout the paper and all surplus is expressed therefrom by rollers 77 78, which latter is held downwardly upon the paper by a bowspring 82 presslng downwardly u'on its bearing 83pivotal1y secured to t e .endplates by screws 84. The tension of spring 82 is regulated by an adjusting-screw 85 extending through an-internally-tln'eaded rod 86 secured to the end plates. The paper is held in frictional contact with roller 79, so that it will move therewith, by roller 80 which is pressed downwardly upon said paper by a bow-spring 87 engagingits bearmgs 88 which are. pivotally secured to the end plates by screws 89. The tension of screw 87 is regulated by an adjusting-screw 90 extending through an internally-thread ed rod 91. secured to the end plates. Roller 79 is turned ste by step through the instrumentality of a xed ratchet-wheel 92 and a pawl 93 engaging said ratchet-wheel. Pawl 93 is pivotally secured to an irre ular-shapcd lever 94 fixed upon a rockeraft 95 and actuated by a solenoid 96 provided with a lunger 07'secured to the irregular-shaped ey'er by a connecting-rod 98. also connected to and operates an arm' 99 through a connecting-rod 100. Arm 99 is pivotally secured to an insulating block 101 which also supports the adjacent ends of conductors 102 103, the opposite ends of which latter are secured to another insulat- The Lever 94 is which are secured to the end-plates 72. Said blocks are provided with circuit breakers C 1.) connected to circuit breakers A B, respectively, and forming part of the synchronizer. Circuit-breakers C D consist of con-' tact points 106 and bell-crank levers 107 which latter are pivoted to lugs 108 secured to the insulating blocks. Levers 107 are.

normally held away from-cohtact points 106 bytheir weighted ends 109. Levers 107 are arranged 'in the path of, a push-bar 110 loosely mounted in the cross-head 111 of a .recording device consisting of said crosshead, a pair of character bearing arms 112 113, pivotally secured to a bracket 115 on the crosshead. The underside of arms 112 11.3 are provided at their free, ends with characters 116 117,respectively, which cooperate in printing certain letters of my aphabet on the chemically treated paper, upon which latter they are held by springpressed pins 118. Character 117, is, how-. ever, so formed that it will print the letters A, H, I, M, R and T without the aid of character 116. Character 116'consists of a transverse bar which prints a. ortion of the transverse elements of a num )er of the letters. Character 117 consists of a bar 117,

for printing the vertical elements of the letters, and transverse bars 1'17" for printing '103 and provided with a plate 1'21v havingstops 122 for limitingthe movement of a shi ting-lever 123 fulcrumed upon a screw 124, upon which is slidably mounted, between the steps, a shifting-nut 125 adapted to be alternately thrown by shifting lever 123 into engagement with worms 126 127, journaled in the end plates and rotated in reverse directions by friction-wheels similar to those em loved in driving worms 38 89.

n order that-the, paper 74 may move step by step, without interference from characters 116 117, thesarue are raised from contact with the paper by their arms 112 113 alternately traveling. upon the inclined arms 130 181 projecting from blocks 10] 105, respec' tively. I I 7 Referring to the diagram, Fig. 11, E designates a station equipped with a transmitter and a receiver arranged in circuit with similar apparatus in station F. In practice the motors for operating, the a )paratus, are, preferably, arranged'to travel at the same rate of speed although this is not absolutely necessary because the syncl'n'onizer, consisting of the circuit-breakers and push-bars, will keep the apparatus in one station properlv timed with that in the other station, as will hereinafter appear. Should the operator at contact device and conductors 6 7. T he ac station E desire to forward a me sage to station F he places a perforated sheet 5 in'posi-j tion in the ,transmitter@ Communica tion. is

then established over the line'wire G by' '5 "throwing switches H Ito the positions shown and closing key J. As the circuit breakers' l? and C are normally held inn closedposition by push-bars 28 110, respectively, the closing of. said key will 'establis 1 a circuit through a the circuit-breaker B, 'a'circuit-wire N, line wireG, a circuit-wire O, a relay P; a circuit- .WireQ, the "circuit-breaker U, a circuit-wire R to ground, and thence back to batteryli, through a line wire S and a branch-wire T. The-establishment of this circuit will energize ,the relay magnets and cause them to; draw 'heir armaturesl and p against con-tactgoints l and g), respectively, and thus close oids 47, 96, Train circuit with wires X X;

respectively,,the closing of the localcircuits 1-wil energize'saidsolenoids and causethein to 25 draw their plungers downwardly "and'thus turn-therespective fecd-rollersof-the transmitter and the receiver'one step. {lhis'action of the transmitter feed-rollersfwill move sheet 5' forward so that its first pair of perforated rows will be. brought betii een the tion of -the plungers will also throw arms '46 99 -into'contact with shiftinglevers 14, 1.23, respectively,-"which in turn throw their wit Worms 38 126, so that-said'worms will move the contact and recording devices to the right. As the contact andrecording devices move to the right their push-bars will be drawn away from the circuit-breakers B0 so they may resume their normal positions and interrupt the local circuits just described. WVhen the contact roller 17 enters the character-holes of its respective rowof 'per forae the current will be reversed and pass over a circuit consisting of a main battery K, branch-wire T, and circuit-wire S toground, thence to line wire R, conductor 103, a circuit-wire c, arm 112, 'characterll 6, platen 104,character 117, wire I), conductor 102, wire 0, line wire G, wire N, conductor 31,

wire a, arm 16, roller 18, c011ductor fifand thence return to battery K", through a'ciran impu segoes. direct to character 116; the

.rnain'battery K, a relayL, a circuit-wire M,

two local circuits U m comprising batteries W W and circilit-wires X XL As the solen-' res ective shifting -'nu'ts' into engagement bars andthe circuit-breakers.

tions itwill successively contact with conand negative poles and print the proper characters u on t For instance, when e paper.

latter will print upon the paper, and'when' an impulse is transmitted to character 117 the latter will print upon said paper. Thus as; the contact device moves across sheet 5 the recording device will move across aper 74, printing charactersthereon as preetermined by the character holes 5". Should the contact device reach the end of-a stroke, for instance a right stroke, before thGTCCOTding device, push bar 28 will close 'circuitbreaker A and hold it in thisposition until .push ba r 110 closes circuit-breaker D. 'The closing of' said circuit-brezikers establishes a current over the mainline through battery K, which current .will close the relays and canse the latter to close the local circuits U V,, causing thesolenoids to throw arms 45 99 into contact with shiitingdevers 14.123, respectively, which in turn throw their rc-a spective shifting-nuts into engagement with worms 39 127 whereby thecontact and registering deviccs will be returned to the left side. of their-respective machines. While arms 45 99 are being thrown into contact with the.shifting-levers, the feed-rollers on the. transmitter andreceiver are simultaneously turned one step by the downward movements of plungers 48 97 and thus move sheet 5 and paper 75 forward one step.

From the foregoing descriptionit will he 00 understood that the contact and recording devices will be made to start together on each stroke throughthe action of the push- After the message has been printed key J is thrown open, and-should this latter operation occur while thecontactand-recordingdevices are moving to the right, the main line and local circuits will be established when circuit 1 breakers A-D are closed by the hence the shifting-nuts 12 will 6 thrown into engagement with worms 39 127 and thereby" be returned 'to the end-of their left st roke. When the contact and recording devices reach this last position their push- 115 bars will clo'se-circuit-breakers B C,but as communication between relay Land circuit-breaker B has been interrupted by open- .ing' the key said relay will not act, hence the character 1 17 while the remainder are printed by said character and character 116.. These 130 hJush-bars, 110

characters are 'assistedin forming the letters by'a predeterminednumber of characterholes 5, of variable lengths, the spaces between said holes,4and the position the holes in the upper row occupy witlrrespect to those in 1ts com anion row. For instance, when printing t e letter A. two short inipulses with but a slight intervening pause will be transmitted through the contact roller 17 to character 117 When printing the letter D one ion and one short impulse will be transmitted t rough roller 17 to character 117 and one short imp ulse will be transmitted through roller 18 to character 116 during the pause between the long and short impulse just referred to. By hrst trans- 'mitting a long impulse ,to character 117, the first vertical element of D will be wider than thesecond and thus render D easily distinguishable from B in whicl the reverse condition exists. Thus it will be understood that by employing this alphabet and printing the letters. thereof in the manner described, all complicated mechanism, such, for instance, as sunflower apparatus may be. dispensed with, and at the'same time I obtain separated letters which, owing to their simi-' larity to those of the English alphabet, may

be read at sight with but little practice. Having thus described my invention what I, claim and desire to secure by Letters- Patent, is r c 1. In a systen'i of telegraphy, reciprocably mounted. arms having characters adapted to engage chemically-treated paper, reciprocably mounted contact arms in circuit with said characters, adapted to alternately enter character-holes in a perforated sheet and tem orarily close the circuit, the duration of t e impulses thus transmitted to the characters beingcontrolled bylthe length of the character holes, mechanisms for moving the perforated sheet and the treated paper forwardly step by step, and means for syn-' chronizing the movements of said mechanisms. a

2. In a system of telegraphy, a main circuit, a reciprocably mounted recording device arranged therein and provided with characters adapted, to engage :the (paper to be printed upon, a push-bar carrie by said device, circult-breakers which are alternately closed by said push-bar and arranged in the main circuit, a reciprocablymounted contact device having arms in circuit with the characters-and adapted to enter the charactor-holes of a perforated sheet, a push-bar carried by said contact device, circuitbreakers which are alternately closed by said push-bar and arranged in the main circuit, electromagnets in c ircuitrwith the main line and the circuit-breakers so that when two of the latter are closed said magnets willbe energized, two local circuits which are synchronously closed by the energized mag-.-

nets, solenoids which are"energized when said local circuits are closed, and feed mechanisms for feeding the paper and the perforated sheet which are synchronously. actuated by said solenoids.

. 3. In a system of telcgraphy, reciprocably mounted arms having characters adapted to engage chemically-treated paper, a shiftin nut for reciprocating.said arms, reciprocab y mounted contact arms in circuit with said characters adapted to enter character-holes inv a perforated sheet and temporarily close 1 the circuit, the duration of the impulses thus transmitted to the characters being controlled by the length of the character-holes, a shifting-nut for reciprocating the contact arms, mechanisms for moving the perforated sheet and the treated paper forwardly'step by step, inclines for raising the contact arms from the perforated sheet-preparatory to ad vancing the latter, inclines for raising the character-arms from the paper preparatory to advancing the same, and means for preventing accidental movement of the shifting- '5, In a system of telegraphy, -a transmitter consisting of a pair of r'eversely-driven worms; acontact device adapted to make and break an electric circuit a shifting-nut carried by said device, members carried by said nut, a shifting-lever having eccentric.

shoulders and straight shoulders for alternately engaging said members, and solenoids for actuating said shifting-lever so that it will alternately throw the shifting-nut into engagement with the worms.

6. In a system of telegra by, two reciprothrow the shifting-nut into.

cably mounted arms, two 0 aracters thereon embracing all of the'elements ior printing separate letters of an alphabet, chemically treated paper upon which said characters travel, and reciprocably mounted contact arms in circuit with said characters adaptedto enter character-holes in a perforated sheet and temporarily-close the circuit, the duration of the impulses thus transmitted to the characters being controlled by the length of the character-holes. 7. In a system of telegrapliy, two recipro 'cably mounted arms, twocoactmg characters thereon containing vertical and transverse elements for printingall of the letters'of an alphabet in separate form, two reciprocably mounted contact arms in circuit with said characters and adapted to enter characterholes in a perforated sheet and temporanly' close said circuit, conductors arranged-be n'eath'said sheet so that the contact arms Will engage said conductors one at atime While passingthrough the characterdroles,

and independent electrical sources of supply in circuit with said conductors. A

8. In a sy'stemof telegraphy, two reclprocably mounted arms, two coacting characters t thereon containing vertical-and transverse elements for printing all o'f-the inte est an alphabet in separate form upon chemicallytreated paper, reciprocably mounted contact arms in circuit with said characters'adapted to enter character holes in a.'perforated'sheet and temporarily close the circuit, the duration of the impulses thus transmitted to the characters being controlled by the length of the character-holes, and mechanisms for.

moving the perforated sheet and-the treated --.p aper forwardly step by step.

' 9. In a system of telegraphy, a pair, of reciprocably mounted arms, two characters thereon containing vertical and transverse: elements for printing all of the'letters of an' alphabet in separate form 'uponchemically treated paper, reciprocably mounted contact arms in circuit with said characters adapted to enter .character-holes in a perforated sheet and temporarily close the circuit, the duration of the impulses thus transmitted to the charactors. bein'g co'ntrolled by the length of the character-holes, electrically controlled means for feedingthe treated paper forwardly'step by step, and similar'rneans" for feeding the .perforated slieet forwardly "step by step.-

10. In a systern-"oi telegraphy', a pair of reciprocably mounted'arms, two characters thereon containing vertical and transverse elements for printing all. of the letters of an alphabet in separate form, two reciprocably mountedcontact arms in circuitwith said characters adapted to entercharacter-holes in a erforated sheet" and temporarily close I the circuit; the duration of the impulses thus transmitted to the characters being controlled-by the length of the character-holes, and means forsynchronizing the movements of the contact andcharacter-bearing arms.

' ill. In a system of telegraphy, two contact arms reciprocably mounted and arranged to enter character-holes in a perforated sheet, conductors-arranged beneath the sheet With which said arms contact on entering the character holes,. independentelectrical sources-of supplyjin-circuit with said Icon- -ductors,, two arms reciprooably mounted,-

two characters thereon containing vertical and transverse elements for printing all of the letters of an alphabet in separate form upon chemically-treatedpaper, circuits connecting said contact and character-bearing arms whereby electrical impulses are transmitted lJQ-the latter from "sources of supply as the ceases respective contact arms'enter the character: holes, feed rollers for moving the perforated sheet step b step, and feed rollers for moving the chemical lytre'ated paper step by step.

- '12. In. a system of telegraphy, two contact arms reciprocably mounted and arranged to enter character-holes in a-perforated sheet, conductors arranged beneath the sheet with which said arms contact on entering thecharacter-holes, independent electrical sources of supply in circuit vri th said conductors, two arms reciprocably mounted,

two characters thereon ,containing vertical and transverse clements'for printing all of the characters of an alphabet in separate form upon chemically-treated paper, said contact and character-bearing arms being connected in such manner that electrical impulses willbe transmitted to the latter from the sources ofsupply as the respective contact arms enter 1 the character-holes, feed-rollers for moving the perforated sheet step by step, feedrollers for moving the chemically-treate l paper step by step, and solenoids for actuating the feedrollers.

13. In ,a'systcm of telegraphy,jcontact arms recipro'cably mounted and arranged to enter character-holes in a perforated sheet,

conductors arranged beneath the sheet with which said arms contact on entering the character holes, independent electrical sources of supply. in circuit with said conductors two arms reciprocably mounted, two,

' .14. Ina systemof tel'egraphy, twocont act arms reciprocably mounted and arranged to enter character-holes in a perforated sheet, conductors arranged beneath the sheet with which. said arms contact on entering the character holes, independent electrical sourcbs of supply in circuit with said condu tors, twoarmsireciprocably mounted, two characters thereon containing elements for 'printing all of the characters of an alphabet in separate form upon paper, said contact and character-bearing arms being connected in such manner that electrical impulses will be transmitted to the latter from the sources of supply as their respectivecontact arms enter the character-holes, feed-rollers for' movingthc perforated sheet stc by step, means for equalizing said steps, cod-rollers lOO for moving the paper to be-printed upon step i mechanisms for moving the perforated sheet and the treated paper forwardly step by step, means for raising the contact arms from'the perforated sheet preparatory to advancing the latter, and means for raising the character-arms from the vancing the same.- 16; In a system of telegraphy, two reciprocably mounted. arm's, two characters on said'arms containingvertical and transverse elenients for printin all of the letters ofan alphabet, chemical y treated paper upon I which said characters travel, reciprocably mounted contact arms in circuit with said characters and adapted to enter character holes in. a perforated sheet and temporarily close the circuit, the duration of the impulses thus transmitted to the characters bein controlled by the length ofthe characteroles,

mechanisms for moving the perforated sheet and the treated paper forwardly step by step, inclines for raising the contact arms from the perforated sheetpreparatory to advancing the latter, and inclines for raising the character-arms from the paper preparatory to advancing the same.

17. In a system of containing vertical and transverse elements for rinting a. number of the letters of an al pha et, and another character containing a transverse element which coacts; with the first-mentioned character in printin the re-. mainder of the letters of the alpha et, said characters'bei-ng arranged close to ether so that the marks made by one wil join .or

nearly join the markfmade by the other.

18. In a system of telegraphy, a character containing vertical and transverse elements for rinting a number of the letters of an alpha et, another character containing a transverse element which coacts with the firstmentioned character in printing the remainder of the letters of the alphabet, said char- 'acters being arranged close. together so that themarks made by one will join or nearly join the markmade by the other, and means for controlling said characters. a

19. In a syjstem of-telegraphy, a character containing vertical and transverse elements for printing anumber of the letters of analphabet, another character containing a trans paper preparatory to adtelegraphy; a characterverse element which coacts with the firstmentioned character in printing the re mainder of the letters of the alphabet, said 7 characters being arranged close together so that the marks made by one, will join or nearly join the mark made by the other, and means for electrically controlling said characters. r

20. In a system of telegraphy, means for printin an alphabet of separate letters each of whic has connected elements, said means "consisting of two characters embracin all of said elements, substantially as descri ed.

21. In a system of telegraphy, means for.

printing an alphabet of separate letters each of which has connected elements, said means consisting of two characters embracing all of said elements, and means for moving the characters so they will print the letters in alinement.

22.. In a system of telegraphy, a stylus consisting of two coacting characters contaming-vertical and transverse elements for printing all of the letters of an alphabet in se arate form, and a transmitter in circuit .wlth said stylus whereby impulses of varying duration are transmitted to the characters. 2 3. In a system of telegraphy, a reciprocatory stylus consisting of two characters adapted to print while moving in either directlon, said-characters embracing all of the an alphabet composed elements for printing of separate letters.

24'. In a system of telegraphy, a reciprocatory stylus consisting of two characters adapted to print upon paper while moving in either, direction, said characters embraclng all of the elements-of an alphabet, and means 'for lifting the characters from the paperwhen they reach the end of each stroke 25. In a system of telegraphy', a stylus consisting of two coacting characters containing vertical and transverse elements for prlnting all of the letters of an alphabet in separate form,.a trajnsmitter'in circuit with sald stylus whereby impusles of varying duration are transmitted to the characters, and means for synchronizing the movements of the stylus and the transmitter at the end of each stroke.

26. In a systelnof telegraphy, a reciprocatory stylus consisting of two characters adapted to print upon paper while moving in either direction, saidcharacters embracing all of the elements of an alphabet, and in-. clined arms for lifting the characters from the paper when they reach the end of each stroke. w

27. In a system of telegraphy, a receiver consisting of feed-rollers for feeding paper step by step, a chemical bath wherewith the paper is treated, and a reciprocatorystylus for prmting separate letters of an alphabet upon the paper, said stylus consisting of a character-jcontaining vertical and transverse elements for printing a number of the letters of th alphabet, and a charater which coacts I In testimony whereof I zi flix my signature,

with tfle first-mentionedcharacter in printin the presence of two Witnesses. ing'thelr emainder 0f the Ietters of the alpha s ROBERT L DEAN ,bet, said characters being arranged close tbe'ther so that the marks made by one will I Witnesses:

oin or nearly jointhe marks made by the G. E GLEA ON,

' other.-

' LMOORE.

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