US429115A - burry - Google Patents

Description

4 Sheets-Sheet 1.

(No Model.)

' J BURRY. PRINTING TELEGRAPH.

Patented June 3, 1890.

WITNESSES:

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INVENTOI? ATTORNEYS.

(No Model.) 4 Sheets--Sheet 2.

JQBURRY.

PRINTING TELEGRAPH.

N 429,115. 0 B 12 PatentedJune 3,1890

A T-TORNE Y S.

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3 t e e h s m e e h s 4 R P M M E Rm U BG N Tun N I R P a. d o M 0 w Patented June 3, 1890.

WITNESSES:

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%4ITOR BY f 7 A TTORIVEYSI 4 u e e h s m e e h S 4 Y R R v B J (No Model.)

PRINTING TELEGRAPH.

No. 429,115. Patented June 3,1890.

W/T/VESSES: l/VVE/WTO/i PM 7%. B? r ATTORNEYS.

UNITED STATES PATENT OFFICE.

JOHN BURRY, OF BOSTON, MASSACHUSETTS, ASSIGNOR OF ONE-HALF TO I,

ALOYS WIRSCHING, OF NEW YORK, N. Y. I

PRINTING-TELEGRAPH.

SPECIFICATION forming part of Letters Patent No. 429,115, dated June 3, 1890. Application filed July 25, 1889. Serial No. 318,603. (No model.)

To all whom it may concern.-

Be it known that I, JOHN BURRY, a citizen of the United States, residing at Boston, in the county of Suffolk and State of Massachuset-ts, have invented certain new and useful Improvements in Printing-Telegraphs, of which the following is such a full, clear, and exact description as will enable any one skilled in the art to which it appertains to make and I0 use the same, reference being had to the accompanying drawings, forming part of this specification.

Myinvention relates to printing-telegraphs which are actuated, preferably, by spring-impelled motors that are controlled in operation by suitable currents of electricity. The invention pertains more particularly to printing-telegraphs in which only one main line may be used to transmit the pulsations of current over.

The object of the invention is to produce a printing-telegraph that is simple in construction, rapid and reliable in operation, and

automatically set in operation to print any desired character by the manipulation of a single key-lever corresponding to said character.

The invention primarily consists in anovel means for positioning the type-wheel to any desired character, whereby speed and reliability of operation are obtained and the usual form of escapement dispensed with.

It consists, also, in a novel means for preventing more than one revolution o the trans- 3 5 mitter upon a depression of a key-lever, and in electro-magnetic devices for liberating said apparatus upon a depression of a key-lever; and it consists, further, in a certain arrangement of circuits and devices, which will be set forth in detail, and then pointed out in the claims appended hereto.

In the accompanying drawings is shown one form of my invention.

In said drawings, Figure I is a rear eleva 5 tion of my receiving apparatus, showing the magnets and means for determining the position of the type-wheel. Fig. II is a plan thereof. Fig. III is a vertical section of the same on the line III III of Fig. II. Fig. IV 50 is asection thereof on the line IV IV of Fig.

I. Fig. IV is an enlarged detail view. Figs.

V and VI are modifications of my improved type-wheel controller or selector-wheel. Fig. VII represents side views of the key-levers and one of the sunflowers of the transmitter, showing the means for locking the transmitter from rotation when the key-levers are depressed. Fig. VIII is a diagrammatic view of the circuit-s and devices used in my invention.

The same numerals and letters of reference throughout the several views indicate the same or corresponding parts.

I will proceed first to describe the transmitting part of the apparatus, and for a proper understanding of this reference is to be had to Fig. VII and the left-hand part of Fig. VIII. The transmitter has two sunflowersA and B, the trailer-armst and u of which are arranged upon the same shaft 10 and are insulated from each other. The shaft lOis propelled by any suitable clock or motor. The trailers t and a are adapted to pass over and make contact wit- h segments 1, 2, 3, and 4 of said sunflowers,respectively, each of which segments is insulated from the others. These trailers t and u and segments control the pulsations that are thrown upon the main line, the polarity, frequency, and succession of which pulsations are governed by a key-board So that is in electrical communication with the segments of said sunflowers.

The transmitter consists, preferably, of eight strips, 0., b, C0 17 60 1f, a and b, which pass beneathallof the key-levers. Inthe draw- 8 5 ings I have illustrated four of these key-levers, a blank or spacing key, and three letter-keys-namely, E, L, and V. Across these strips passes a contact-bar II, which is connected with one pole of a battery M B, the 0 pulsations of which are thrown upon the main line. Beneath said keys is a second contactbar H, which is incommunication with the opposite pole of said battery. The strips a b, 850., are capable of being depressed by the 5 key-levers, and those strips which are depressed by said key-levers make contact with the lower contact-barH'. The key-levers are provided with one or more downward projections 50, Fig. VII, which are adapted to oper- IOO ate upon the strips. Each key-lever is provided either with a diiterent number of downward projections or has said downward projec tions differently located, so as to operate upon other strips, the idea being that no key-lever will depress the same strips or the samenumber of strips, so that the keys control different combinations of said strips, and no two keys, therefore, throw the same polarity with the same order and frequency upon the line.

In Fig. VIII the extensions 50 are represented diagrammatically by black dots, and only those strips will be depressed which are beneath the key-levers having said black dots. Upon a depression of the strip a a current of one polarity is sent over the line, and upon a depression of the strip 1) an opposite current is sent'to line.

The strip a is connected by a wire A with the segment 1 of the sunflower A, and the strip b is in electrical communication with the segment 1 of the sunflower B by means of a wire B. In the same way the strip a and I) are connected to segments 2 of sunflowers A and B, respectively, by means of their respective wires A and So, also, strips a and I) are connected with segment 3 of each of the sunflowers, respectively, by wires A and B, while the strips (0 and b are in electrical connnunication with the segments 4 of the respective sunflowers by wires A and 13 In the wire A is located an electro-magnet 12, which controls a local circuit 15, that contains therein a local battery L 3 and an eleetro-magnet 13, which governs an armature-lever 16, that normally is within the path of the trailer 2, the object of which is to prevent said trailer and the transmitter from making more than one rotation upon depression of a key. The segments 1 of the sunflowers A and 13 are the starting-segments of the apparatus, in that they are used to start the apparatus in operation. Each of the key-levers is arranged to depress one or the other of the strips a and Z1, no matter how many other strips may be depressed by said keys. If the key-levers did not depress one or the otherof said strips a l), the apparatus would not be started in its rotation, for these strips are the only ones that connect with the segments 1, upon which the trailers normally rest.

L is the main line, which is in electrical communication with the trailer 1 of the sunflower A and passes to a polarized relay P R at the receiving-station. The circuit of this polarized relay may be completed by way of the ground to the other trailer 11/ of the sunflower B or by return-circuit L. The polarized relay controls the operation of the receiver according to the succession of polarities thrown upon the line, all of which will be hereinafter set forth in detail. When the strip a, for instance, is depressed, a current will pass from the battery M 13 over the contact-bar 11 to said strip, and over the wire A to the se ment 1 of the sunflower A through the elcctro-magnet 12, and by way of the trailer 1 to the line L and polarized relay 1 R, and by the return-circuit L to the trailer a to segment 1 of sunflower B over wire B to strip 1), contact-bar 11, back to the battery. This will energize the magnet 12, which will complete the local circuit 15, and thereby vitalize the electro-magnet 13 and attract the armature 16. As soon as this occurs, the trailer '15 will be rotated by the clock or other motor, which impels the shaft 10, and will cause said trailer, as well as the trailer u of the sunflower ]3, (because upon the same shaft 10,) to rotate.

The trailers t and u will continue to rotate until they complete their revolution, when they will be arrested by the armature 16 catching the end of the trailer 25. This will occur provided the key-lever depressed has been allowed to rise and break the circuit of the wire A before the t ailer completes its revolution, for the armature 16 will be held without the path of the trailer 75 during the time a key-lever is depressed and the trailer is on the segment 1.. Should, therefore, any keylever be held down until after the trailer has completed its full revolution, the apparatus will continue to perform another rotation, and would rotate as long as a key-lever was held depressed. The receiver, to be described herc inafter, is so arranged that a character is printed at each rotation of the sunflowers, and hence should a key be held down for any considerable length of time and the apparatus allowed to make a number of revolutions the same character would be printed over and over again were not some provision made to obviate the same. For this purpose I provide a stop-lever 14, (see Fig. VIL) which is arranged beneath all of the keys and is operated upon the depression of each key. The end of this stop-lever may be arranged to be forced. within the path of the trailer/5 upon the depression of each key, and said stoplever will remain in this position until the key-levcrs are liberated. lherefore no matter how 101] any key-lever is held depressed the apparatus can make but one revolution upon one depression of a kcy-lever, for the trailer '6 will come against the stop-lever 1-1, and the apparatus will be held from rotation whether the armature 16 be in the path of said trailer or not. As soon as a key-lever is liberated, however, the stop-lever 14 is withdrawn from the path of the trailer, the circuit of the wire Ais broken at the strips, and the magnets 12 and 13 de-energized, so that the armature 10 will be retracted within the path of said trailer, which will now be held from rotation at the segment 1. The stoplever 11 operates to hold the trailer from 1'0" tation when akey-lever is depressed too long that is, when the armature it is held from perforn'iing its duty. The stop-lever 14 prevents more than one connection with the second one upon onedepression of a key-lever and keeps the trailer 6 on the insulation between IIO the insulation by the lever 14, insures the circuit being broken and all of the apparatus withheld from operation.

When a key-lever is pressed down, which, in addition to forcing down one of the strips to b, depresses one of the strips a or 6 connected with the segments 2, a positive or negative current will be sent over the line when the trailers reach the segments 2. This impulse will succeed the impulse sent over the line when the trailers were upon the segments 1. So, also, when one of the strips a or b is depressed by pressing down a key-lever, a current of plus or minus polarity will be sent over the line (depending upon whether the strip a or b is depressed) when the trailers reach the segments 3. This impulse will succeed the impulse sent over the line by the trailers when at the segments 2. These impulses control the polarized relay, so as to position the type-wheel for different letters. Should neither of the strips (7. or Z1 be depressed upon pressing down a key when the trailers reach the segments 2, no current will be sent over the line, and the polarized relay will by the absence of current be controlled to operate the receiver to position a different character of the type-wheel. The absence of current over the line produces a different operation of the receiver and positions a different character of the type-wheel. This is true of any of the segments excepting, perhaps, the segments 1, over which a current must pass upon each depression of akey-lever, in order to start the apparatus in operation, as before explained. The different combinations and successions of plus and minus currents and absence of current produces a difference of operation upon the receiver, and each combination or condition positions a different character of the type-wheel.

I will now describe the receiving-instrum ent itself, and set forth afterward the polarized relay and the circuits controlling said receiver.

Having now more particular reference to Figs. I, II, III, IV, IV*, and the right-hand part of Fig. VIII, 17 is a base-plate upon which the receiver may rest, and 18 and 27 are two plates that ext-end upward therefrom and support the various parts of the receiver. 19 is a shaft which passes through said upright plates and carries, preferably, two typewheels T and T the one being preferably a letter-wheel and the other a figure-wheel. This shaft is propelled by a clock-train 20 or other motor. 23 is a selector-wheel, which is mounted rigidly upon said shaft 19, and has teeth preferably of three different lengths,

which are adapted to be arrested in any positionby pegs 24, that maybe projected through holes in the upright plate 27. Said pegs 24. are each controlled by an electromagnet. The selector-whee 23 has preferably nine-teeth a b c d efg h 2', Figs. III and VIII, and is controlled by seven electro-magnets M, M M M M M and M ported by brackets 28, which are secured to the upright plate 27. 25 is a ring arranged at some distance away from the magnets and in front of the armature-levers 26, and carries back-stops 31 for limiting the play of the armature-levers of the various magnets. Eacharmature-lever carries a peg 24C. Said pegs are encircled by a spiral spring, one end of which bears against the plate 27 and the other end against a collar fastened to said pegs, so that when the pegs are projected forward these springs will tend to draw them to their normal position flush with the surface of the plate 27. The pegs of the magnets M M &c., are not all arranged at the same distance from the center of the selector-wheel. (See Fig. VIII.) The pegs of the magnets M, 1W1", and M are arranged at the greatest distance from said selector-wheel, the pegs of the magnets M and M placed somewhat nearer, and the pegs of the magnets h and M positioned nearer still. The tooth 2' of the selector-wheel is made longer than the other teeth, so that said tooth will be intercepted by the pegs of any of the magnets, while the teeth 0 and f are made of such a length as not to be intercepted by the peg of the magnets M, M and M, located at the outer circle, (see Fig. V111,) and the teeth a, b, d, e, g, and h are of such proportions as to be within the path of the pegs of the magnets M and M only.

The circuits of the peg-magnets are controlled by two sunflowers C and D at the receiver (which circuits will be described in detail hereinafter) and by the polarized relay, before referred to. The selector-wheel and peg-magnets take the place of the ordinary escapement in printing-telegraph receivers.

Each peg-magnet, as before described, is arranged so as to be withdrawn from the path of the selector-wheel as soon as the magnet governing the same is dcvitalized, so that when a peg-magnet has arrested the selectorwheel in any desiredposition and then resumes its normal position the said selectorwheel would continue to rotate, and unless another peg was projected within the path of the same within a short while the clock-train 20, governing the shaft 19, would run down. To prevent this I arrange to have each peg as it is projected forward locked in its protruded position, but liberated therefrom as soon as another peg is projected forward. For this purpose I provide a star-wheel 30, which is fastened to oscillate slightly upon a plate 45, supported, preferably, at some distance from the upright plate 27. The star wheel 30 has a tooth corresponding to each The arma tore-levers 26 of the seven magnets are Suppeg, and each peg is provided with an extension or a feather 37, having an inclined nose with a notch cut therein for the projections of the star-wheel 30 to take into and lock said peg in its forward position. (See-Fig. IV.) The star-wheel has connected to it a spiral spring 38, which is attached to some immovable part of the apparatus and tends to keep the projections of said star-wheel against the pegs 24, but permits said star-wheel to be rotated slightly backward. After one peg is locked in its forward position and another one is projected forward, the inclined nose of the extension or feather 37 rotates said starwheel slightly backward and permits the spiral spring encircling said first-mentioned peg to withdraw it from the path of the selectorwheel. After the first-mentioned peg has been withdrawn from the path of the selectorwheel, said selector-wheel rotates until caught by the second peg, and the projection of the star-wheel 30 then drops into the notch in the feather 37, carried by said second peg.

Upon, preferably, a shaft 18 and insulated therefrom are two trailers 00 and 3 which pass over and make contact with the segments 1, 2, 3, and 4 of the sunflowers C and D, which are constructed similar to the sunflowers A and B. The shaft 18 is propelled by a clock train or other motor, which is regulated as near as can be to rotate synchronously with the shaft 1.0 of the sunflowers A and B.

The segment 1 of the sunflower C is connected by wire 11 with the segment I of the sunflower D. In the path of said wire 11 is arranged an eleetro-magnet 20, which controls an armature-lever that is normally held in the path of the trailer 0", and which therefore locks the trailers m and y from rotation, but liberates the same as soon as a current is sent over the wire 11. In the wire 11 is also a printing-magnet P M, which operates the printing-lever, carrying a hammer g at the free end. The said wire 11 also embraces in its circuit one coil of a shifting-magnet S M, (clearly shown in Fi VIIL) which magnet determines the type-wheel to be printed from. The mechanical devices of this shifting-magnet, whereby one or the other type-wheel is printed from, as shown herein, and used in connection with my apparatus, is fully described in United States Letters Patent No. 327,911, dated October 16, 1885, to Aloys Virsching. The electrical part of said shifting-magnet is, however, slightly different from that shown in said patent, as will clearly appear from my drawings and specification. The segment 2 of the sunflower C is connected by wire 22 with the segment 2 of the sunflower D through pegmagnet M The segment 2 of the sunflower C is also connected by wire 2 through pegmagnet M to frontcontactnof polarized relay. The segment 3 of the sunflower C is connected by wire 33 through peg-magnet M with segment 3 of sunflower D. The segment 30f the sunflower C is also connected with front contact-stop n of the polarized relay through peg-magnet M by means of wire 3", which connects wire 33 with wire 2. So, also, segment 4 of sunflower G is connected by wire 44 with segment i of sunflower I) through pegmagnet M. Segment 4 of sunflower 0 is also connected through peg-magnet M with front contact at by wire 4", which connects with the wires 44 and 2". The sun flower Chas an additional or fifth contact 5, over which the trailer as sweeps and occupies the same radial position as the segment 2. This contact 5 is connected by wire 5" with back contact a of the polarized relay through peg-magnet M. The wire it connects contact a with wire 11 and embraces within its path the other coil of the shifting-magnet S M. (Shown in FigzVIII.) This latter coil is wound around the shiftingmagnet S M in a reverse direction to the previously-dcscribed coil within the path of the wire 11, as indicated in the drawings, Fig. VIII. One of these coils tends to polarize the magnet in one direction and the other coil tends to polarize it in the other direction. In this respect the shifting-magnet differs from the shifting-magnet shown and described in the patent of \Virsching last referred to, in that said shifting-magnet of the patent has only one coil, but is polarized differently by currents of opposite polarity, whereas in the present case the polarity of the current is always the same; but the coils about the magnet are wound in reverse directions, as shown and described. The same effect, however, is produced in the two cases and is accomplished by an obvious equivalent well known in the art. The trailer a: of the sunflower O is in electrical communication with a local battery L 3 by means of a wire 00', and the other pole of said battery is in electrical communication with the back contact .9 of the polarized relay, while the trailer 1 of sunflower I) is in electrical communication with front contact-stop s by means of wire 1 The polarized relay has polarized armatures N and S at each end, which play between the contacts a s and a s". The wire 2, which connects the battery I1 I3 with the back contact s, also connects with a wire ,2, which joins electrically the two armatures N and S together. Each of the armatures N and S carries a contact, which is insulated from said armatures, and the two contacts are connected together by a wire -The normal position of parts is that shown in the diagram. Under this condition of affairs the insulated contact carried by the armature N rests against the contact 3, and the insulated contact carried by the armature S rests against the contact a Normally the trailers a; and y rest upon the segments 1. Consequently the circuit of the battery L B is not completed when the apparatus is at rest, for the continuity of said circuit is broken at the contact 8 and n. The circuit of the battery L B is controlled by the trailers LE and 1 and polarized relay, and can of course only be completed through the respective Wires connected with any segment when the trailers are resting upon said segment. If a current be sent over the line, this will attract one or the other of the armatures N or S, depending upon the polarity of the current, and cause one or the other to rest upon either one or the other of the contacts a or s*, and will thus complete the circuit of. a certain one of the peg-magnets depending upon the position of the armatures, and, further, upon what segments of the sunflowers the trailers are upon.

Let us take, for instance, the simplest casenamely, that where the space or blank key is depressed. This key presses down the strip a and liberates the trailer I, as before described, starts the apparatus to rotating, and sends over the line a current of a certain polarity. This will place the armature N against the contact 11. The circuit of the battery L B will now be completed by Wire or, trailer at, segment 1 ofsunflower 0, wire 11, wire a, armature N, wire 2' and 5, back to the other pole of the battery. The magnet 20 will be energized thereby, and thus the trailer 00 will be free to move at practically the same instant that the trailer 25 at the transmitter is liberated. Therefore the receiver will start to rotate at the same time that the transmitter does. The segments 1, as before stated, are the starting-segments and are not connected with any of the peg magnets, so that the circuit of none of the peg-magnets will be completed as long as the trailers are upon the segments 1. \Vhen the trailers t and a reach the second segment 2, there will be no battery upon the line, for the reason that the spacekey does not depress either one or the other of the strips a U The armature N of the polarized relay will then be drawn back to its normal position by its retractile spring, and the insulated contact carried thereby will be brought against the back con tact s. V The trail: ers a: and y at the receiver will at the same time be upon the segment 2; but-none of the peg-magnets in electrical communication with said segment will be energized, for the reason that their circuits are broken at the contacts at and 3*. The circuit of the peg-magnet M will, however, be completed by the trailer as, contact 5, wire 5, wires 2 and 2 by way of battery L B and wire x.. This will arrest the type-Wheel in the position shownin the drawings, bringing the longest tooth iof said type-wheel against the peg of the magnet M and position the blank space of the typewheel opposite the printing-hammer q. The trailers will continue in their rotation and will sweep over the segments 3 and rt; but no current will be thrown upon the main line, as none of the strips connected with said segments are depressed, and none of the circuits of the peg-magnets will be completed as the trailers 00 and y pass over said segments 3 and at, for the reason that the circuit of none of the peg-magnets connected with said seg-' ments can be completed unless the armature N or S be actuated. hen the trailer t of the transmitter completes its revolution, it will be arrested by the armature-lever 16, as pointed out above, and the trailer acof the sunflower C at the receiver will be arrested at the same instant, for the circuit of the battery L B will now be broken at the contacts 7% and 3 It will be noted as the circuit of the battery L B is completed upon starting the apparatus that the printing-magnet P M and shift ing-magnet S M will be energized so long as the trailers 00 and y are upon the segments 1, and it will be evident from the foregoing,when taken in connection with the patent of VVirsching, referred to above, that one or the other type-wheel will be printed from as the circuit of one or the other coil round the shiftingmagnet is completed. The polarized relay determines which coil of the shifting-magnet shall be put in circuit. If the armature S be upon the contact 3*, the coil of the magnet S M that is arranged within the path of the wire 11 will be in circuit and will cause an impression to be taken from one of the type- Wheels. If, however, the armature N is upon the contact oi, the circuit of the other coil around said shifting-magnet, which polarizes it in an opposite direction to the previous coil, Will be completed, and this will cause the other typewheel to be printed from.

I construct the shifting-magnet S M so that it willbe sluggish in operation,and make the printing-magi] et P M so that it will be instantaneous in action and in this respect these magnets differ from the patent of Wirsching referred to, in that in said patent the shifting-magnet operates in advance of the printing-magnet. This change in making one magnet quick and the other slow in operation is Well known in the art and needs no illustration or explanation.

My apparatus is constructed to take an impression from the type-wheel not when the key corresponding to the character to be imprinted on thepaper is depressed, but when a succeeding key is pressed down. The depression of a key in my apparatus takes an impression from the type-wheel of the previous key pressed down and positions the type- Wheel for the character desired only, but does not take an impression from the type-wheel for that character, this being done, as just explained, by the depression of the next succeedin g key which operates the platen. From these preliminary remarks the construction of my printing and shifting mechanism will now be more readily understood. From the foregoing we saw how the type-wheel was positioned for the blank or zero space; but the printing lever and hammer was not operated to give such space to the printed characters upon the depression of the blank-key, but to take an impression of the character previously positioned. Suppose the parts to be in the position illustrated in the diagram that is, the type-wheel positioned at blank to give a space to the paper when the printinglever is depressed. Now suppose another key on the keyboard is pressed down. This will send a current over the line and start the transmitter and receiver to rotating, will com plete the circuit 11, energize the printing magnet P M at once, and will cause the hammer q to be thrown up toward the blank space of the type-wheel before the magnet S M starts to operate, as it is made more or less sluggish. This will occur before the typewheels have started to move, for they cannot move until some of the peg-magnets are 01)- erated, which peg-magnets cannot be put in circuit until the trailers reach the segment 2, for the reason that the segments 1 are in no way connected with the pegmagnets, as pointed out before. The type-wheels therefore are held in position until after an impression is taken and the segments 2 are reached. The shifting-magnet S M, before the trailers have left the segment 1, positions the apparatus, so that one or the other typewheel will be printed from. After the trailers a and 1 have left the segments 1 the cir cuit 11 and magnets contained in said circuit, including the printing and shifting magnets, cannot be disturbed during the rest of the rotation, as said circuit 11 is not connected with any of the othersegments. Therefore when the shifting-magnet positions the parts to print from one or the other typewheel, these parts remain in position during all the rest of the rotation. It will be observed that the segments 1 are not. only the starting-segments, but they are also the segments by means of which the printing is done and the parts are positioned to print from one or the other type-wheel. Myinvention is not limited, however, to an apparatus having two type-wheels, as this feature could be dispensed with, if preferred, and only one type-wheel used. Say now, for instance, the key E was the key depressed after the type-wheel has been broughtto the blank position. This would start the apparatus and operate the printing and shifting mechanism,as just stated, and would send over the linea current of the same polarity as before when the trailers were upon the segments 1, and cause the armature N to bear against the contact a when the trailers were upon said segments, which would complete the circuit of that coil on the shifting-magnet S M that is within the path of the circuit 11, and move the shifting mechanism so as to print from the letter type-wheel. As the trailers reach the segments 2, another impulse of the same polarity will be sent over the line as the strip (6 is depressed by the key E, and the armature N will be again brought against its front contact a, and the circuit of the peg-magnet M will be completed at said contact over wire 2. The peg of the magnet M will be thrust forward and the peg 0f the magnet M withdrawn for the circuit of the ma net M, while it is completed at the contact 0 and at the contact a is broken at the contact .5. The selector-wheel will therefore rotate until the tooth 1'. strikes against; the peg of the magnet M, whereupon the letter E will be in position beneath the printing mechanism.

I11 the accompanying table which is given below I have designated the strips that would be actuated upon depressing the different key-levers, and also the magnets that would be energized successively in the order given to position the type-wheel to the character corresponding to the key-lever actuated. Of course other combinations could be made to get the different letters, and the accompanying table only shows one way of reachingthe result with particular reference to the way the letters are arranged upon the diagram as shown in Fig. VIII.

TABLE. Strip. Magnet.

a it

M" M M M M" 11 M t Strip. 1) ..a a a b The above table does not indicate the combinations that may be made to obtain figures and other characters upon the second typewheel; butthis will be obvious from said table. The only thing requisite to print from the other type-wheel is that the key-levers corresponding to the figures and characters carried by the other type-wheel should depress the strip b instead of the strip a. The depression of the strip 7/ sends a current of opposite polarity over the line when the trailers tand a are upon the segments 1. The strips a, a a, and a 'send a current of one polarity to line when depressed, and the strips b, Zr, I)", and Z) send a current of opposite polarity to line. The one causes the armature N to be attracted and the other the armature S to be attracted. It will be borne in mind that the armatures N and S are never both attracted. at the same time. In fact, this is an impossibility under the construction set forth.

To fully understand the working of the apparatus, and particularly the selector-wheel and peg-magnets,lwillstate,further,howsome of the other characters on the type-wheel are positioned. Let us suppose that it is desired to position the letter N of the type-wheel. The key of the key-board corresponding to this character would be depressed and would actuate, according to the table above, the strips a and Z). Magnet M would be first energized thereby in a manner obvious from the foregoing, the selector-wheel and type-wheel would be arrested first in the position shown in the drawings by the magnet M and when the trailers m and 7 had reached the segment 4 the magnet M would be energized and the peganagnet M withdrawn. The type-wheel i and send no current to line when the trailers were at the segments 2 and 3, but a current of the same polarity to line when the trailers 25 and a were on the segment 4. The first of these currents would energize the magnet M, arrest the type-wheel in the position shown, and hold the type-wheel in such position during the time the trailers were passing over the segments 2 and 3, but would energize the magnet M during the time the trailers were on the segment 4. The magnet M permits the typewheel to rotate two characters farther than the magnet M and the letter K is thereby brought in position beneath the printing device. The letter I is obtained by depressingstrips 0. and a which energizes, first, the magnet M, as explained, and then the magnet M when the segment 3 is reached, which magnet permits the type-wheel to rotate three characters farther than does the magnet M and thus the letter I is brought in position for printing. The letter Y can be gotten by first energizing the magnet M in a manner that will be obvious from the foregoing, then energizing the magnet M as set out above, which permits the type-wheel to rotate three characters farther, and then energizing the magnet M which will allow the type-wheel to rotate one character farther than the magnet M making four characters beyond the position in which the type-wheel is held by themagnetM. To get theletter J the magnet M will, first be energized. Then the magnet M which permits the t ype-wheel to rotate three characters more, and then the magnet M which allows the type-wheel to rotate two characters farther still, and thus the type-wheel is permitted to rotate all together five characters beyond the position itis held in by the magnet M To position the letter A the magnet M" is energized, and then the magnet M This latter magnet permits the type-wheel to rotate six additional characters and brings the letter A over the printing device. Thus the magnet M adds one character to the position in which the type-wheelis placed by the magnet M the magnet M two characters, the magnet M three characters, the magnets M and M together three plus one-that is, four characters and the magnets M and M three plus two characters equal five, and the magnet M six characters, the magnets M and M six plus one equal seven characters, and magnet M plus M six plus two equal eight characters. The magnets M, M, and M are arranged at equal distances from each other, and are atthe same distance from the center of the selector wheel, and when energized successively the type-whee1 may rotate a distance corresponding to nine characters or through one-third of its distance. The magnet M is arranged at three characters from the magnet M and the magnet M at three characters from the magnet M or at six characters from the magnet M and three characters from the magnet M The magnet M is arranged upon the innermost circle four characters from hi and five characters from M, and the magnet M is arranged four characters from M and five characters from M, also on the innermost circle. It will be obvious from the foregoing, and especially the table above, that the magnets M, M'", or M must be energized for every character positioned,- while magnets M ,M ,M and M may not be needed at all or only one of them. The type-wheel is therefore brought to unisonthat is, to a starting-pointin one of these th rec positions for each character, and therefore the apparatus, we may say, is unisoned one or more times in the positioning of every character, so that there is very little chance for the apparatus to get out of synchronisin with the transmitter. It will be noted, also, that there are only four segments of the sunflowers, and that these are quite extensive, so that even though the clocks or motors at the receiving and transmitting station may be slightly out of unison there will be contact of the trailers with the respective segments of sufficient duration to insure the completion of the circuits. It will be noted, further, that the sunflowers are brought to unison at each revolution by the magnets 13 and 20. This unison feature of my apparatus is one of the principal ones of my invention; but the main feature thereof which I desire to particularly emphasize is the selector-wheel and peg-magnets, whereby 1 do away with the ordinary escapement, and thus make the apparatus quicker and more reliable than ordinary printing-telegraph receivers, wherein the type-wheel has a tooth corresponding to each character, and when a character is positioned the type-wheel has to be actuated for each character intermediate of the same and the previous character atwhich the typewheel stood, and a corresponding number of impulses must be thrown upon the line to position said type-wheel. This not only precludes speed, but an instrument constructed in this way has more chance to get out of unison.

In Fig. V is shown a modification of the selector-wheel. Here eight pegs are operated by as many magnets in the manner set out above, which magnets are arranged in four different circles and in the path of eighteen teeth of four different lengths. This modification may control a type-wheel carrying fifty-four characters, which is represented diagrammatically around the rim of a circle drawn around the selector-wheel.

In Fig. VI is shown diagrammatically how it is possible to get sixty-four positions of the type-wheel by means of eight teeth of the selector-wheel of two different lengths with fifteen peg-magnets on two different circles. The number of teeth and magnets andlength of teeth, as well as the position of magnets, may be varied indefinitely, and I do not wish, therefore, to limit myself to any particular combination, although I prefer the arrangement shown in Fig. VIII, wherein there are nine teeth of three dilferentlen gths and seven peg-magnets on three circles, which control two type-wheels carrying, all told, fifty-four characters.

Any number of receivers may be placed in series in a line, so as to transmit intelligence to various different stations. The apparatus is particularly adapted for long-distance service, as it uses but one line-wire and verylittle electric energy. One or moreline-wires may be employed, if preferred, and changes in strength of current may be sent over the line instead of or in conjunction with changes in polarity to control the receiver, all of which will be obvious and well known to any one skilled in the art. It is obvious, also, that various other changes maybe made in the apparatus without departing from the spirit of my invention.

I am aware of Patent No. 150,953 to G. \V. Howe, for printing-telegraphs, granted on the 19th day of May, 1874, but do not claim anything shown or described therein. My apparatus operates substantially dilferent from the apparatus covered by said patent, and my mode of operation is carried out by substantially different mechanism.

\Vhat I desire to claim as new and secure by Letters Patent of the United States as my invention is 1. A rotating selector-wheel having varying lengths of teeth, pegs arranged at various points around the eircrnnference thereof and at different. distances from the center of said selector for positioning the same, and magnets controlling said pegs.

2. A rotating selector-wheel having varying lengths of teeth or arms, pegs arranged at various points around the circumference thereof and at different distances from the center of said selector for positioning the same, magnets controlling said pegs, a motor for impelling said selector-wheel, and a printing mechanism.

3. A printing-telegraph having one or more type-wheels positioned by a selector-wheel with different lengths of teeth and peg-magnets controlling the same, the pegs of which are arranged at various points around the circumference of the selector-wheel and at different distances therefrom.

4. A printing-telegraphhavingmagnets for positioning a rotary type-wheel to bring certain characters in position, other magnets for positioning other characters, and a plurality of sunflowers at the receiver for governing the circuit of said magnets.

5. A printing-telegraph having magnets for positioning the type-wheel to bring certain characters in place, other magnets for sub sequently positioning the type-wheel in one or more different positions to bring other characters in place after the type-wheel has been brought to the first position, local circuits, in which said magnets are included, and a plurality of sun flowers controlling said local circuits.

6. A printing telegraph having a typewheel impelled by a suitable motor, a selectorwheel having teeth of varying lengths governing said type-wheel, the peg-magnets, the pegs of which are arranged at different distanees from said selector-wheel for controlling the same, sunflowers governing the circuits of said magnets, and a relay actuated by line-currents for making and breaking the circuits of said magnets and sunflowers.

7. A printing-telegraph receiver having a rotary type-wheel, a plurality of magnets directly controlling the position of said typewheel, and a plurality of sunflowers at said receiver for governing the circuits of said magnets.

8. A printirig-telegraph receiver having a type-wheel, a plurality of magnets for directly determining the position of said type-wheel, sunflowers at said receiver for making and breaking the circuits of said magnets, and a relay governed by line-currents for controlling the circuits of said magnets and sunflowers.

f). A printing-telegraph receiver having a rotary type-wheel, a plurality of magnets directly controlling the position of said typewheel, a printing-magnet, and sunflowers at said receiver for governing the circuit of the aforesaid magnets.

10. A printing-telegraph receiver having a rotary type-wheel, a plurality of magnets directly determining the position of said typewheel, a printing-magnet, sunflowers atsaid receiver for governing the circuit of all of the aforesaid magnets, and a relay eontrollingthe circuits of said magnets and sunflowers.

11. A printing-telegraph receiver having two sets of type, a plurality of magnets controlling the position of both sets of type, a printing-magnet, a shifting-magnet for determining which set of type shall be printed from, sunflowers at said receiver for making and breaking the circuits of all of the aforesaid magnet-s, and a polarized relay for governing the circuits of said magnets and sunflowers.

12. A printing-telegraph receiving-instrument having a wheel governing the position of the type-wheel, peg-magnets controlling the position of said wheel and type-wheel and revolving sunflowers for completing the circuits of said magnets and for breaking the circuit of one of said peg-magnets after another magnet has been energized, and a starwheel for locking the pegs of said magnets in their projected position and liberating the same when another peg is thrust forward to 23,- governing the type-wheel of a printingtelegraph, peg-magnets controlling said selector-wheel, and a spring-actuated star-wheel 30, adapted to engage a notched feather carried by the pegs of said magnets, for the purpose described.

14:. A transmitter for a printing-telegraph, having a multiplicity of contact-strips, keylevers adapted to depress one or more of said contact-strips and put the same in communication with a battery, sunflowers having their segments connected with the respective strips, and a' line-wire completing the circuit between the trailers of said sunflowers.

15. A transmitter for a printing-telegraph, having a multiplicity of contact-strips, keylevers adapted to depress one or more of said contact-stripsand put the same in communication with a battery, sunflowers insulated from each other, having their segments connected with the respective strips, a shaft carrying the trailers of said sunflowers, an armature-lever holding said shaft from rotation, a local circuit, a magnet in said local circuit, controlling said armature-lever, and a second magnet in the line-wire which connects one of said strips and segments together, governing said local circuit.

16. The combination,in a transmitter fora printing-telegraph, of key-levers, sunflowers controlling the circuits governed by said keylevers, and a stop-lever adapted to be forced by said key-levers in the path of a moving part of said sunflowers.

17. A transmitter for a printing-telegraph, having a multiplicity of contact-strips, keylevers adapted to depress one or more of said contact-strips and put the same in communication with a battery, sunflowers insulated from each other, having their segments connected with the respective strips, a shaft carrying the trailers of said sunflowers, an armatore-lever holding said shaft from rotation, a local circuit, a magnet in said local circuit, governing said armature-lever, a second magnet in the line-wire which connects one of said strips and segments together controlling said local circuit, and a stop-lever adapted to lock said shaft from rotation upon depression of any key-lever, whereby the sunflowers can make but one rotation upon each depression of the key-levers.

18. A transmitter for a printing-telegraph, having two sunflowers controlling the circuits governed by the keydevers, in combination with areceiVing-instrument connected there with by a single line-wire, consisting of two type-wheels governed by a selector-wheel having different lengths of teeth and positioned by a plurality of peg-magnets, the pegs of which are arranged at different distances from said selector-wheel, a printing-magnet and a shifting-magnet at said receiver, sunflowers also at the receiver, and a polarized relay in said linewire, both of the latter together governing the circuits of the aforesaid magnets.

19. The combination, as hereinbefore set forth, of the contact -strips, the key-levers adapted to place one or more of said contactstrips in the circuit of a battery, thesunflowers A and B, having segments connected with the respective contact-strips, at one of which segments the trailers are normally held by an armature-lever, a local circuit and magnet controlling said armature-lever, a second magnet governing said local circuit arranged in the wire connecting said segment with its respective contact-strip, a stop-lever adapted to be forced within the path of said trailer by the depression of the key-levers, a line-wire connected with the trailers, a polarized relay located in said line-wire and having an armature at each end, back and front contact-stops between which said armature -levers play, sunflowers C and D at the receiver, impelled by a suitable motor to rotate with the aforesaid sunflowers, and having segments corresponding to the segments of the aforesaid sunflowers, wires connecting the respective segments of the sunflower together, a startingmagnet 20 in the wire 11,connecting the seg ments 1 of the sunflowers O D together, a printing-magnet and one coil of a shifting-magnet also embraced in said wire, peg-magnets in the wires connecting the respective segments of the sunflowers O and D together,wires connecting certain of the aforesaid wires with one of the front contact-stops of the relay and including other peg-magnets in their circuits, an additional segment 5 for the sunflower G, controlling anotherpeg-magnet andconnected with one of the back contact-stops of the relay, the pegs of said peg-magnets being arranged in different circles, substantially as specified, a wire a, connecting the wire 11 with one of the front contact-stops and including the other coil of the shifting-magnet, a battery, electrical connections, a selector-wheel having different lengths of teeth controlled by said pegqnagnets, the circuits thereof governed by the polarized relay and sunflowers, and a type-wheel positioned by said selectorwheel.

In testimonywhereof I have hereunto set my nand and aiflxed my seal, this 23d dayof July, 1889, in the presence of two subscribing witnesses.

JOHN BURRY. [n s] Witnesses:

JOHN H. TAYLOR, ELLEN B. TOMLINSON.

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