US1821164A

US1821164A - Printing telegraphs

Info

Publication number: US1821164A
Application number: US270387A
Authority: US
Inventors: Edward E Kleinschmidt
Original assignee: Teletype Corp
Current assignee: AT&T Teletype Corp
Priority date: 1928-04-16
Filing date: 1928-04-16
Publication date: 1931-09-01
Anticipated expiration: 1948-09-01

Description

Sept- 1, 1931- E. E. KLElNscHMlDT 1,821,164

PRINTING TELEGRAPHS Filed April 16, 1928 3 Sheets-.Sheet l 4 lin M e. M if a+- I- 7 i Ww QM SePtl, 1931- E. E. KLr-:lNscHMlD-r 1,821,164

PRINTING TELEGRAPHS Filed April is,4 1928 5 sheets-sheen 2` Septfl, 1931. E. E. KLx-:lNscHMlDr 1,821,164

PRINTING TELEGRAPHS Filed April 16, 1928 5 'Sheets-Sheet I gwwgro wf/@QM v QM- Patented Sept. l1, 1931 "UNITED srATEs PATENTv OFFICE EDWARD E. KLEINSCHMIDT, OF CHICAGO, ILLINOIS, ASSIGNOB T TELETYPE CORPORATION, 0F CHICAGO, ILLINOIS, A CORPORATION OF DELAWARE PRINTING TELEGBAPHS,

Application led April 16,

Stock tickerpsystems in present use have followed the principles of standard telegraph practice of employing an independent source of energy at each receiving station for driving the printer thereat utilizing some form 'of synchronization' usually controlled vby transmitted synchronizing cur-.

rents. The motor driven by the local energy source is usually provided with governors to maintain approximately constant speed.

Although this arrangement necessitates frequent check up of the motor governors in order to` insure fairly constant speed it has been found necessary to employ this method of operation in telegraph systems due to the great lengths of the communicating lines. Stock tickers on the other hand,

and many other printing telegraphs are often operated in systems using lines which are of comparatively short length and which therefore present problems entirely dlerent from those encountered in the standard tele- 30 graph system. In these systems, power can roma transmitting station to operate the receiving mechanisms in the system if they are designed to operate on a minimum amount of power. Such an arrangement ff" has the advantage that a large number of printers located at various points can be controlled from a central transmitting station and will therefore run at the corrects without requiring a frequent check up o the motor governors necessary where each printver has an individual control drive.' In such a system, a drive line maybe 'employed over which current is transmitted from the central transmitting oilice, the current being of alternating impulses of the correct freedV 1928. Serial No. 270,887.

quency generated by a tuning fork, relay controlled contacts, or other generating source for setting up reversals of the required frequency. Such a system is especially adapted for driving the stock tickers or telegraph printing apparatus installed in a hotel, factory or station forinter-communicating purposes, and for any other arrangement where a group of printers within a small radius are to be operated in a single system. In such systems the printer mechanisms should operate on a minimum amount of power and at high speed and should be simple, elcient and rugged. In my improved printer herein disclosed the power demands for selecting, printing, and other` operations, are so distributed throughout the cycle of operations that there is at no time a sudden excessive peak load that the motor is called upon to carry as is the case ,in printers of the prior art. This, I accomplish, in general by providing an arrangelment whereby the typewheel is in rotation substantially during the entire period covering the cycle of operations, the selection and special operations being advantageously distributed over'the cycle ofoperations to provide a printer especially -adapted'for service in a system in which the motors are driven from a common source of energy over a'power line.

Accordingly, an object of my invention is to provide a printing telegraph receiver that can, be operated by aminimum amount of power.

Another object of my invention is to provide means for timing various actions of a selecting mechanism or printing telegraph receiver to distribute the loa-d on a driving mechanism so as to make possible operation -by a minimum amount of power. -A further object of the inventionv is to provide a light, compact printer selecting mechanism especially adapted for use in selecting systems in which a limited amount of power is available -fordriving the printers.

Still a further object of the invention is to provide a printing tele raph-mechanism l in which the operation o the'functions is timed with respect to the operation of the printing mechanism to permit the utilization of relatively small and light weight parts for the selecting, printing, and` function opera` tions.

Still another vobject of my invention is to provide a mechanism in which shift operation or case selection of letters or numbers is accomplished during the return lof the printing arm.

Another object of the invention is to provide a mechanism for driving printers in groups by alternating current preferably supplied from a common source.

Further objects of the invention are such as will appear to one skilled in the art from the detailed description of the preferred embodiment hereinafter set forth and as -is defined by the terms of the appended claims.

As shown in the drawings, Figure 1 is a Y front elevation of a preferred embodiment of the invention in the form of printing mechanism.

Figure 2 is a plan view of the form of invention shown in Figure 1.

Figure 3 is a side elevation of the form of invention shown in F igureil.

-Figure 4 shows the details of .the operating and locking mechanism for the selector arrangement in the preferred embodiment of the invention.

Figure 5 shows a detent arrangement for locking the selector rings of the preferred embodiment in the selected position.

Figure 6 is a diagram showing graphically the timing of the various mechanisms of my improved printer.

Figure 7 shows a portion of the message as printed by my improved printer.

Figure 8 shows a part of the selecting mechanism for printing letters or figures.

Referring to Figure 2, the mechanism is controlled by a single selector magnet which may be of any well known construction. As

shown, the selector magnet is of a. sensitive,

polarized type especially designed for use 1n vstock ticker operation and comprises a permanent magnetl 1, to which a laminated soft iron core 2 is secured. Superimposed on the core 2 are magnet windings 3 and pivotally supported opposite the. pole of the permanent magnet 1 by means of a pin 4, is the operating armature 5. Riveted to the armature 5 is a bifurcated actuating eX- tension 7, the bifurcated end of which fits into annular channel 8 ofthe selector cam shaft extension 9.

The cam shaft extension 9 is formed integrally with the shaft 10 and is slidably journalled -in a stationary bearing 11 which is supported from the framework (not shown) inA any suitable manner. Formed integrally with the opposite end of the cam shaft 10 is a bearing extension 12 which fits slidably into a suitable recess-or bore formed' in the end of the shaft section 13. Shaft section 13 is journalled-for rotation in fixed bearing 14 and rigidly secured thereto and drivelrthereby is a trip cam 15 which is provided with an extension 16. Extension 16 fits into a suitable slot of the cam shaft extension member 18 which is pivotally secured to cam shaft 10 by means of a securing pin 19. y

Rigidly secured to the Vshaft section 13 are a Series of cams 21- 23 mount-ed for rotation therewith. Cam 21 controls a lever to he described in detail hereinafter for paper feeding, paper, cam 22 controls the printing operations and cam 23 the reset of the selectors.

Secured to and driving the shaft section 13 is a friction or slipclutch 24 which may be of any suitable construction and which is driven by the shaft section 2G. Shaft section 26 is j ournalled in fixed bea-ring 27 supported from the frame work`28 and is driven by a spiral gear 29 through friction clutch 24, A helical spring 25 constrained at one lend hy the'bearing 27 and at the other end by the friction clutch 24 forces the clutch into engagement with the spiral gear 29 for transmitting the rotative power from the gear to the shaft section 26. The gear 29 meshes with and is driven by a spiral pinion 31 which is mounted on and rotatable with the shaft 32; Shaft 32, in operation, is c ontinuously rotated at a predetermined and constant speed by an electric motor driven by current generated at and'transmitted from a remote station. f

Secured on 'cam shaft 10 is a stop pin 33 which vin the position of the parts'shown in Figure2 engages a stationary stop projection 34 suitably supported in the frame work of the mechanism.

Secured to shaft 10 are a number of adjacent angularly spaced selectingcams 35.

to 39, thenumber and spacing of the cams sired in the manner'well known to those. A

skilled in the art. In the position of parts shown in Figures 2 and 4, as the cam shaft: 10 rotates, cams to 39 will successively engage the inclined ends of the lugs 41 of the point selectingarms or levers 42 pivotally, mounted on the stationary rod 43, de-

pressing the forward ends of the levers.

The movement of arms 42 is guided in -a slotformed in comb member 43. Figure, 2, suitably supported from the frame work. At their forward ends the arms 42 are proyided with U shaped projections comprising two lugs 40 and 44. Vith the selector magnet the line holding the parts in t-he position lshown in Figures 1 and 2. When a start Formed on each point selecting arm 42 is a latching extension 45 as clearly shown in Figure 4, adapted to work under the latching shoulder 46 of latch member 47, individual thereto, when the arms 42 are depressed. Latches 47 are pivotally 'supported from the frame of the mechanism by pin 48 and are provided with actuating extensions 49 pol\sitioned in alignment with levers 42 and adapted to be actuated by the cam pins 35 to 39 as will appear more fully hereinafter. Disposed between the extension 50 of latch members 47 and extensions 51 of the selector arms 42 are helical springs 52 which rotate the latches 47 counterclockwise when the selector arms 42 are "depressed, working extension 46 over lug 45. J-

'In operation of the mechanism so far described, the pinion 31 rotates continuously driving the gear 29 continuously. When no signals are being received, the position ot' the parts will be as shown in Figures 1 and 2, with the stop pin 33 of the cam shaft 10 engaging the fixed stop 34, and the shaft is held fromrotation and the clutch 24 slideson the rotating gear 29. The signals to which the mechanism is responsife each comprise a start condition,.a code combination of selecting conditions and a stop condition. The stop condition is normally on condition is received the polarity of current flowing through the windings 3 is reversed decreasing the magnetic field strength of the left hand leg of the core 2 and increasing the magnetic field of the right hand leg of the core 2, causing armature 5 to tilt in the opposite direction'. -It will accordingly be seen that a sensitive selector magnet in which s rings; are eliminated, especially adapte for stock ticker work is provided. ,l 4- A Tilting of armature 5 in response to the start condition shifts the cam shaft 10 endwise so that stop pin 33 is free from the stop ,34, and the friction clutch 24 will become effective to drive the cam shaft 10 at a-'speed which is definitely timed with-respect to the incoming impulses. In the varrangement shown, the first-impulse ofthe signal following 'the startlcondition is received just before the cam 35 reaches the point selector 42. If this rst impulse isa spacing signal, the armature 5 will be actuated shifting shaft 1() longitudinally and positioning the cam 35 to engage lug 49 of the latch individual to the selector arm 42 rocking the former about its 'pivot l48 torelease the selected arm if it is latzhed at this time. 'If the impulse immediately following the start impulse is a selecting or marking condition, the selector magnet 5 will be operated to position the pin 35 so that it will rideover the cam surface 41 of the selectorarm 42 controlled thereby, deflecting its selector arm 42. Asfthe arm 42 is depressed, the pin 35 will pass over the projection 41. When the selector arm 42 is depressed spring 52 will force the shoulder 46 of the latch 47 individual thereto over the locking projection 45 of the arm 42, locking the arm in its lower or selected position. In a similar manner, the cam pins 36 to 39 will be positioned inf alignment with the projecting cam portions 41 ofthe other selecting arms 42 individual thereto and will either operate these or pass by them. depending upon whether succeeding received impulses are marking or spacing conditions, causing the selecting arms 42 to be positioned into lower` or upper positions, respectively, in accordance with the received combinations of character selecting imp-ulses.

Disposed adjacent the prongs or extensions 40 and 44 Fig. 4 are the

lug portions

57 and 58 of rockers 59 individual to each of the selectors 42, each pivotally mounted on a pin 61 carried by a lever 62.

Lever 62 pivotally depending from a pin 63 mounted on the frame is provided with the roller 64 engaging a cam 23 mounted on and rotatiugjvith the shaft section 13. Helical spring 66 maintains roller 64 in engagement with cam 23.

As will now be clear from the above description after the cam shaft 10 has rotated through a su'licient angular movement to position all of the selectors42 Vin accordance with the received code the operated ones of which'are latched, the cam portion 23 passes under roller 64 and rocks lever 62 about the .pivot 63 in a counterclockwise direction.

-ment with their associated lug extensions 40 or 44 Von the selectors 42 depending upon whether these selectors have been left in non-operated or uppermost position or operatedv or depressed position by the received code. For example, if the selector 42 is in its operated or depressed poition, lug 57 will engage lug 40 and the rocker 59 will rot-ate about 'the pivot 61 in a clockwise direction. If on the other hand, the selector 42 is in its non-operated or upper position,

thelug 58 engages the lug 44 as the lever 62 is moved counterclockwiseabout the pivot 63 andthe rocker 59-wil1 be rocked counterclockwise about the pivot 61.

It will be noted that a complete overlap -is thus provided between the selectors -42 and rockers 5.9, the latter beingr set simultaneously at the end of 'the code receiving period. It will be obvious that an overlap may also be provided between cams 35 to 39 and -selectors 42 if desired.

Furthermore not only are Athe selectors 42 set by power from shaft 26,.but the settings of the selectors are transferred to rockers 59 through cam 23 on shaft 13, the transfer occurring while no selecting operation is taking place to prevent any sudden peak load on the motor driving the shaft 10.

Projections 67 on each ofthe levers 59 are positioned in a slot 68 of individual notched selector rings 69. Rings 69 are rotatably supported concentric to a sleeve 71.Fig. 3 supported in the frame member and are disposed between guiding comb plates 72 and held in position by bolt 70. These selector rings 69 have V-shaped notches cut in their inner circumferential edge in a manner well known by those skilled in the art which when the rings are selectively moved with respect to each other will align'at 32 different positions about their circumference for affecting the printing selection in a manner to be described hereinafter. 59v are moved about their pivot 61, projections 67 rock their associated rings 69 which are thereby positioned in accordance with the previously received code to align a certain predetermined group of notches. To insure the selected disk remaining in operated position, a selector locking lever 73 pivotally mounted on the pin 74 secured to the frame is provided with an engaging member 75 which rides over the cammed portion 76 on shaft 13, lever 73 being held in engagement with cam 76 by the helical spring 77. Following the setting of rings 69, this cam portion drops abruptly and rocksl the lever 73 about the pivot 74 in a counterclockwise direction. The engaging lug 7o on the end of the lever 73 rides into a slotted por tion 79 on each of the selector rings 69 locking them in selected and non-selectedlposition. A 'modified form of latch is shown in Fig. 5. A pivoted lever 80 provided with lug 81 is pressed by spring 81 into engagement with either one of the two notches on veach ring 69. Each ring 69 is provided with two such notches and depending on whether the rings are in operated or non-operated position, lug 81 enters the corresponding notch. When the rings are reset, the lug 81 is cammed 'out and into the notch corresponding to the new position.

In addition to the selector rings 69 there is a stationary ring 82, Figure 1 which has saw teeth 83 cut in its inner circumference and corresponding to the alignment positions of the V-shaped notches of the selector rings 69. A seeker 84 pivotally mounted on an arm l85 is provided with lug portion 86 engaging a tooth of the stationary ring t 82. Lug 86 is forced into engagement withone of these teeth by helical spring 87 secured at one end to the seeker 84 and Aat the other end to the arm 85.- A lug portion of the seeker 84 normally rests in the aligned notches of the movable rings 69 and when the rings 69 move to a new selecting posi- As rockersY tion, the lug of the seeker is forced outwardv ly against the tension of the spring 87 and at thesame time lug 86 disengages the tooth on stationary ring 82.

The arm 85 is secured to a typewheel shaft 88 normally held from rotation While the lug 86 of the seeker 84 is in engagement with a tooth on the stationary ring 82. As soon however, as the lug 86 is forced out 7from the tooth of the stationary rin g 82, the shaft 88 is vfree to rotate.

The typewheel shaft 88, Figure 3, is supported from the framework 1n bearings 89 and slidably keyed thereto is the friction drive clutch member 91. Helical spring 92 interposed between the shoulder 93 on the shaft and the clutch #member 91, frictionally engages the clutch tionary ring 82, the typewheel shaft startsv rotating and continues until the lug 86 reaches a position opposite the newly aligned V-shaped notches. The lug'is forced into t-hese aligned notches by spring 87 carrying lug 86 into the notch of the saw shaped tooth of the stationary ring 82 adjacent'the particular aligned slots. Lug 86 engaging a tooth in ring 82 holds the typewheel shaft from rotation.

The speed of rotation of the typewheel is so timed that one complete rotation will take place in the time indicated as Typewheel Revolves in Figure 6. This, it will be noted, covers the period from the stop signal at the end of the preceding code to the mid-portion of the fourthimpulse interval. As was described above, following the complete receipt of the code the settings of selectors 42 are transferred to the rings 69 which are set in accordance with this proceeding. Immediately upon movement of ring 69 to a new setting the type wheel shaft is released and rotates While the succeeding code is being received until the midportion of the fourth impulse. By automatically releasing the type wheel as soon as a new code is set up, the maximum time possible is allottedfor rotation thereof requiring therefore a minimum amount of power. vInasmuch as the typewheel shaft is restrained by a stationary ring which may be rugged in structure,'the selecting rings may be built light requiring little power to operate.

Printing operations, as are now about to be described in detail, may then occur during the period from the mid-portion of the fourth impulse interval until the stop interval, when again as in the previous case, the new code which has 'now been set up 011 thc selectors 42 is transferred to the rings 69 and the typewheel sha-ft 88 lwill again be released for the new selection. Thus it will be noted from Figure 6, printing of the selection of A occurs from the end of the fourth impulse during the selection of 'B until the stop impulse following receipt of code for selection of B.

Secured tothe end of the typewheel shaft 88 and rotatable therewith are type'wheels 96 and 97 Figure 3 each providedwith a plurality of type characters 99 and 98 respectively, arranged about the periphery of the typewheels. The typewheels are mounted on the sleeve 101 and secured-to rotate with the typewheel shaft 8 8 by means of the set screw 102. As the" typewheel rotates, the characters onthe periphery are sequentially brought opposite printing hammers 103 and 104 individual to each of the

typewheels

96 and 97.

Printing hammers 103 and 104 are pivotally mounted on a pin 105. Positioned just below the printing hammers 103 and 104, and in (fo-operating relation therewith is a. printing hammer operating member 106 frictionally held from rotation on the pin 107 by means-of a washer 108. The pin 107 is carried by a printing arm 111 Figure 1 Vcarried by and rotatable with the pin 112.

At the end of the printing arm 111, a helical Y spring 113 is secured, the other end of which is carried by the frame work and normally tends to rotate the printing arm 111 in a clockwise direction about pin 112 asa. center.

Carried by and rotatable with the pin 112 is a lever arm 114 having a lug 115 riding over the camxned ortion of the printing cam 22 on the shaflfJ section 13 and held in engagement therewith by the helical spring 113. Y

As is well understood by those skilled in *the art, printing stock tickers are arrangedf to print letters and figures in separate rows as shown in'F1g. 7. In order to accomplish this, a typewheel with t'wo rows of type is provided as described above one carrying figures and the other letters, each having an individual printing hammer. Following the selection of the particular character `which is'to be positioned opposite the printing hammer, a sixth impulse is transmitted for selecting the particular hammer to be released for printing either a letter or a figure.

A sixth impulse selector lever 121, Figure l, vis mounted with the other selectors on VYpin 43 and rocked thereabout by an individual cam ou the shaft 10 in the manner Vdescribed 'in detail with respect-to the othervselectors.

A horizontally extending pin 123 carried by the selector 121 at its extremity engages a lever 124 pivoted on a pin 125 secured for' rotation therewith by the set screw 126. The pin 125 also carries thereon a bifurcated lever 127 secured for rotation therewith and provided with

arms

128 and 129. Immediately following the fifth selection of the code, the sixth impulse operates the selecting lever 121 through its associated cam 011. the cam shaft 10 maintaining it either in its upper position as shownor rocking it about the pin 43 to its depressed position. This latter movement 'of the selector 121 will rock the lever 124 through the pin 123 to in turn rotate lever 127 and either

arm

128 or 129 is positioned in operative relation with the extensions 132'and 133 of the triangular piece 106.

During the selecting period, as the shaft section 13 rotates, the printing cam 22 rocks the printing lever 111 in a Vcounter clock- Wise direction moving the triangular piece 106 carried therebydownwardly. At the end of the selecting period, the triangular piece 106 is positioned just above the bifurpin 107 on which it is frictionally mounted and the extension 134 will take up a position beneath the printing hammer 104. Immedi- 1 vided with an extension 142`for engaging the pin 143 carried by the typewheel shaft for the purpose of preventing printing when a special operation such as spacing between words is desired. In such a case, the code received is such as to position the p in y143 in the path of extension 142. When now theprinting cam 22 releases the lever arm 114, it is permitted to move upward in the mannerl of operation during an actual printing stroke until the ,extension 142` engages the pin 143 and is brought to a stop just before the printing hammer engages the character on the typewheel.` The length of the projection of the pin 143 and the extension 142 is such as to prevent the printing llever from traveling far enough to permit the triangular piece 1064 from striking the printing hammer and Vstill permitting a clear path for the lever'127 to take up a new setting.

A pressure roller 145- carried on arlever 'arm 146A mountedfon a pin 147 has secured ately thereafter, the printing hammer lever gram of operations in Figure 6, feeding of the paper starts immediately after the letter is printed. The vcam 21 by an inclined portion rocks the lever 156 counterclockwise, pulling the feed pawl 154 downwardly and rotating the feedproller 151. A stop pawl 158 suitably supported from the framework at 159 engages the teeth of the ratchet wheel 153 to prevent clockwise rotation thereof while pawl 154 is moved upwardly to engage a succeeding tooth. An ink pad 161 supported from a frame bracket 162 presses against the periphery of and inks the typewheels 96 and-97.

From the above it will be clear that a receiving printer is here disclosed which is simple in design and light and requires comparatively a small amount of power, so that the energy for operating the printer can be supplied from a central dispatching point. It will be noted for example that the time of action is so arranged as to distribute the load on the driving mechanism to make it possible to perform all operations by a minimum amount of power. A combined seeker and stop is arranged to automatically release the typewheel when the selector rings are shifted to a new code setting. By the provision of a-:separate ring for 'locking the stop device, the notched selector rings can be of very light construction inasmuch as the duties are limited'solely to indicating the stop position. The automatic release of the seeker and stop permits of a slower speed typewheel shaft inasmuch as the operation of the selectors to a'newposition immediately releases the typewheel for rotation to a corresponding'new position. This provides a greater rotating period for the typewheel during the signalling period than has heretofore been possible and enables therefore the use of a lesser amount of power for such rotation. A longer printing period is also thus provided inasmuch as the typewheel will reach its new selecting-position quicker than has heretofore been possible.

'i It will further bevapparent that the selec- 60 tors, and operating cam such as control the h sottingvof the selector rings, the operation ofthe printing hammer, the paper feed are all mounted on the same shaft and driven hy the same'clutch. By arranging the printer arm to be positioned while on its back stroke, a simplified letter and figure .selection is provided.

tions may be made in the details herein' before described without departing from the spirit of the invention as expressed in the appended claims.

Accordingly what is desired to be secured by Letters Patent and claimed as new is 1. In a printing telegraph, a typewheel, a typewheel stop, a plurality of selector rings operated in accordancewit'h code combinations of impulses' for conditioning said typewheel stop to bring said typewheel to a stop position and a stop ring cooperating with said typewheel stop to bring saidtypewheel to a stop.

2. In a printing telegraph, a typewheel, 'a typewheel stop, a plurality of selectors operated in accordance with codecombination of impulses for conditioning said typewheel stop to bring said typewheel to a stop position, and a common stop device associated with said selectors for engaging s aid stop when conditioned by said selectors.

3. In a printer, a rotatable typewheel,`a stop arm associated therewith,. a plurality of selector disks variably operated in accordance with code combinations of impulses, said stop arm being arranged to cooperate with said disks when operated in response to received code combinations of impulses whereby said stop arm is conditioned to bring said rotata le typewheel to a stop and a saw tooth disk cooperating with said stop arm in its stop position to stop said typewheel.

4. In a printing telegraph, a typewheel, means for rotating said typewheel, and a plurality of selectors selectively operated in accordance with received code combinations of impulses for bringing said typewheel to a stop at a selected position, said typewheel being released for further rotation immediately upon the operation of said'selectors in accordance with a new code combination of impulses.

5. In a printing telegraph, a typewheel, means for rotating said t pewheel, a plurality of selectors selective operated in accordance with received co e combinations of impulses for bringing` said typewheel to a stop at aselected position, said typewheell ically in response to the setting of the selectors in `accordance with a new code combination of impulses.

6. In a printer, a rotatable typewheel, a plurality of selectors, means for setting said selectors in accordance with received code combinations of impulses and a stop device associated with said typewheel conditioned by said selectors in operative position to bring said typewheel to a stop, said stop device being rendered non-operative automat-- ically in response to the movement of said selectors in accordance with the new code combination of impulses.

7. In a telegraph receiver, a rotatable typewheel, a pluralityof diskselectors for determining e stop condition of said type- Wheel, means cooperating with said selector disks for bringing said typewheel to a stop, said means being rendered non-operative automatically inresponse to the setting of.

said selectors in accordance with a new code whereby said typewhel is released for rotation immediately upon the resetting of said selectors.

8. In a printing telegraph receiver, a lurality of selector disks, a typewheel sha t, a stop arm secured to said shaft, a stop mechanism for engaging said stop arm to lock said typewheel shaft 4from rotation, said selector disks when operated`\ in accordance with a code permittingsaid stop arm to engage said stop device and disengaging said stop arm from said stop device automatically in response to the setting of sald selector disks in accordance with a new code.

\ 9. In a printing telegraph receiver, a plurality of selector disks, a typewheel shaft. a stop arm Jsecuredto said shaft, a stop mechanism for engaging said stop arm to lock said typewheel shaft from rotation, said selector disks when operated in accordance with a code permitting said stop arm to engage said stop device and disengaging said` stop arm from said stop mechanism automatically in response to the setting of said selectors in accordance with a. new code whereby said typewheel shaft is immediately started' into rotation to find the new selected position.

10. In a telegraphreceiver a `plurality of selector disks providedl with notches on their inner circumferential edges, a rotatable shaft, a'stop arm rotating with said shaft, means secured to said stop arm for moving said arm into the aligned notches of said selectors, and a stop device cooperating with said last mentioned means when in the aligned notches for locking said stop arm .from

rotation. A

11. In a telegraph receiver a plurality of typewheels, a printing hammer individual to each of said typewheels, an operating bar for moving either of printing hammers sive to a predetermined impulse for condiof said printing hammers.

12. In a printing telegraph receiver, a

plurality of typewheels, a printing hammer individual to each of said typewheels, an operating bar common to said printing hammers, said bar being moved away from said printing hammers during the selecting operation and conditioned for operating either of said hammers in accordance with the sixth impulse of the received code and means for releasing said operating bar to operate Y the hammer which is conditioned for operation.

13. In a printing telegraph receiver, a )plurality ofvtypewheels, a printing hammer vindividual to each of said typewheels, a forked arm, a printing member for operat- 'ing either of said printing hammers, means for operating said forked arm in accordance 14. 4In a printing telegraph, a plurality of typewheels, a prlnting hammer individual to each of said typewheels, means responsive to 'received code combinations of impulses for positioning said' typewheel characters relative to said printing hammers, an operating bar common to said printing hammers, means for conditioning said operating bar to operate said printing hammers, said operating bar being simultaneously responsive to a received impulse vfor selecting one of said printing hammers for operation.

15. In a printing telegraph receiver, a selector shaft, a plurality of select-or bars, a latched device individual to each of said selector bars, individual operating bars, said shaft being responsive to received code com- -binations of impulses for operating those selector bars in thev new combination which were not operated in the preceding combination performing no operation on those entering the new combinations which were also operated in the preceding combination, and

l 65 'against said typewheels and means responplurality of selector bars, operating bars inllNl lll)

dividual to each of said selector bars, a rotatablecamshaft responsive to received code combinations of impulses for operating said selector bars, means controlled by said shaft fortransferring the settingof said selector bars to said operating bars and selector rings rovided with notches on the inner circumerential edge selectively operated by said operating bars.

18. In a printing telegraph receiver, a typeWheel restrained from rotation while in a selected position, a selector shaft, a plurality of selectors selectively operated `by said shaft in accordance with received code combinations of impulses andy means controlled by said shaft for transferring thc setting of said selectors, saidftypewheel being simultaneously released for rotation to the new selected position.

19. In a printing telegraph receiver, a plurality of selectors, a selector shaft responsive to received code combinations of impulses for operating said selectors, a plurality of selector disks, a typewheel brought ,type wheel, a stop arm associated therewith,v

a plurality of selector members variably operated 1n accordance with recelved code combinations of conditions for selectively de termining thev angular stop position of said wheel and a member common to all of. said selector members and cooperating with said stop varm at the position determined lby said selector members for bringing said typewheel to a stop. I

2l. In a printing telegraph receiver, a rotatable typewheel, a stop arm, a plurality of selector members variably operated in accordance with received' code combinations of impulse conditions for `selectively determining the angular stop position of said type wheel and a notched disk memberengaged by said stop arm for bringingsaid typewheel to a stop at the position selectively determined by said selector members.'

22. In a printing telegraph receiver, a typewheel, means for rotating said typewhcel, a plurality of selectors selectively operated in accordance with received code combinations of conditions for bringing said typewheel to a stop at a selected position, saidtype-Wheel being released for fur-v ther rotationautomatically in response to the setting of said selectors in accordance with the new code combination of impulses and means for rotating said typewheel at such a speed that said typewheel is'moved to the new selected position during substantially all of the interval while the succeedingcode combination of conditions are being received.

In a printing telegraph receiver, a selector mechanism, a'typewheel, means for variably operating said selector mechanism to positions in accordance with received code combinations of conditions, a second set of selectors, means for simultaneously operating said second selectors to positions in accordance with the operations of said first selector mechanism, `means controlled by said second selectors in operated positions for bringing said typewheel to a stop at a selected position in accordance with the operation of said second selectors, said first selector mechanism being responsiveto anew code combination of conditions While said typewheel is rotating to said selected stop position, said typcwheel being released for further rotation automatically in response to the positioningof said second selectors inaccordance with the new positions of said first selector mechanism.

24. In a printing telegraph receiver, a selector mechanism, atypewheel, means for variably setting said rselector mechanism in accordance withreceived code combinations of conditions, asecond set of selectors, means for transferring the setting of said selector mechanism to said second selectors, means controlled by said second selectors in operative position for bringing said typewheel to a stop at a selected position inV accordance with the operation thereof, said selector mechanism being responsive to a new code combination of conditions while said type-l wheel is rotating to said selected position, said-typewheel being released for further rotation automatically in response to the setting of said second selectors in accordance with the new setting of said selector' mechanism and means for rotating said typewheel at a speed such that said typewheel reaches said selected position before said first selectors are again operated in accordance with all of said new code combinabination 'of impulses while' said printing operation takes place, said.` printer being started into operation yagain automatically in response to the setting of, said second Iselectors in accordance with the new. setting of said first-selectors, and means for operating said printer at a speed suchthat substantially all o f the vcode period for operating the first vselector is necessary to complete the.

printing operatiom 26,-In -a printing telegraph receiver, a typewheel, means for rotating said typewheel, a set of rotatable selectors responsive to received code combinations of conditions,

tion substantially at the end of the succeed- .l

ing impulsing period in response to which saidl first set `of selectors are operating.

27. In a telegraph receiver, a selector mechanism responsive to received code combinations of impulse conditions, a second set of selector disks simultaneously operated fol-` lowing the setting of said selectors in accordance 4 with received code combinations and inA accordance with the setting of said selectors, said selector disks being provided with notches on their inner circumferential edges,

a rotatable shaft, a stop arm rotating with said shaft, means secured to said stop arm for moving said arm into the aligned notches of said selector disks and a sto devicecooperating with said selector diss for locking the stop arm from rotation,.said rotation of said stop arm being such that it will reach the stop position substantially at the end of the period While said first selectors are responding in accordance 'with a new code combination of impulse conditions.

28. ln a printing telegraph receiver, a plu-- rality of selector disks providedwith notches on the innercircumferential vedge and variably operated -in accordance with codecombinations o impulse conditions, a rotatable shaft, a stop arm rotating with said shaft, means secured to said stop arm for moving said arm into aligned notches of said selectors, a stop device cooperating with said last mentioned means when in the aligned notches for .locking said stop arm for rotation, a plurality-,of typewheels carried o'n said rotatable shaft, a printing hammer 'individual to each of said typewheels, an operating bar common to said printing hammers, said bars being moved away from' said printing hammers during the selecting operation and conditioned for operating either of said hammers in accordance with an extra condition 'following the received code combination o conditions and means for releas- Ving said operating bar to o rate the hammer which is conditioned or operation.

29. In a .printing telegraph, a plurality of typewheels, means for rotating said typewheels, a .pluralitytof select ors selectively operated in accordance n, with received code combinations of conditions, means for bringing said typewheels to a stop at a selected j position determined by the operation of said selectors, said means being common to said selectors, said typewheels being released for further rotation automatically responsive to the setting of said selectors in accordance with a new -code combination of conditions,

a printing hammer individual to each of said typewheels, va fork arm, a printing member for operating either of said fprinting hammers, means or operating sai fork arm in accordance with an impulse 'following said received code combinations of conditions to condition said printing .member to engage one or the other of said printing 'i hammers, said member being thereafter operated for operating the printer hammer with which it'is associated. p v I 30. In a printing telegraph, a plurality of typewheels,

wheels, a plurality of selectors'selectively operated in accordance with received code combinationsof impulse conditions for bringing said typewheels to a stop at a selected position, said typewheels being released for further rotation automatically in response to the setting gof said selectors in accordance with a new code combination ofimpulse conditions, a printing hammer individual to each of said typewheels, an operating bar common to said printing hammer, and means for conditioning said operating bar responsive to an impulse condition following said code for selecting one of said printing hammers for operation.

31. ln a printing telegraph receiver,a selector shaft, a plurality of selector bars, a

latch device individual to each of said selector bars, individual operating bars, said shaft being responsive to received code combinations of conditions for operating those selector bars in the new code-combination which were not operated in the preceding code combination performing no operation on those entering the new combination which were also operated in the preceding combination andl releasing those bars not in the new combination which were operated in means for rotating said typethe preceding combination, a cam carried by Y said shaft for transferring the setting of said selectors to said individual operating bars, a plurality of typewheels, a printing hammer individual to each of said typewheels, means controlled by said individualv operating bars .'or selectively conditioning said typewheels orprinting operation, an

operating bar for; moving either of said printing hammers against said typewheel and means responsive to a predetermined condition following said code combination for conditioning said operating hai' to operate one of said printing` hammers.

32. In a 'printing telegraph receiver, a selector mechanism responsive to received code combinations of impulse conditions, a second selector mechanism, means for transferring the settin of said first selector mechanism tov sai second selector mechanism simultaneously, a .typewheeh means for rotating said typewheel to a variable angular position and means for stopping said typewheel at a redetermined position in accordance with tlie setting of said second set of, selectors, a printing hammer, means for releasingsaid printing hammer to print a character in accordance with the position of `said typewheel, said selector' transfer mechanism, typewheel rotation, typewheel stopping and printing hammer operation being so timed with respect to each other that the printer operates on a minimum amount of energy, the energy being distributed evenly over the cycle including said operations.

33. In a printing telegraph receiver, a

` plurality -of pivoted selector mechanisms variably operated in accordance with received code combinations of impulses, means 'for locking `said selectorsin operated position, a plurality` of disksl and transfer means periodically operated into engage- 4ment with said levers for variably operating said disks simultaneously in accordance with the operation of said levers and means' for locking said disks. n l' 34. In a printing telegraph system, a plu-` rality of selector mechanisms, latching means individual to each of said selector,

mechanisms, means responsive to received icode combinations of impulses for variably operating said selector mechanisms, said latching means operating automatically following the operation ofl its individual selector mechanism for latching said selector 'mechanism i n` operated positions,.selector disks, transfer means and means for period-y ically operating said transfer means into operative relation with said selectors for variably operating said selector disks.

35. In a printing telegraph system, a. plurality Aof selector mechanisms, latching means individual to each of said selector mechanisms, means responsive to received code combinations of conditions for variably operating said selector mechanism, said latching 'mechanism operating automatically following the operation of the individual selector mechanisan for latchin said selec? tor mechanism in operated positions, selector disks, transfer means, means for-periodically operating 'said transfer means into operative relation with said selectors for variably operating said selector'disks, a plurality of typewhecls, a printing hammer individual to each of' said typewheels, an operating bar common to said printing hammers, said bar being moved away from 'said printing hammers during the selecting period and conditioned for operating either oi said printing hammers in accordance with aicoiidition following the said received code combination of conditions and means for releasing said operating barto operate the hammer which is conditions for operation.

36. In a printing ltelegraph receiver, a plurality of selectors, means for variably operating said selectors in accordance with received code combinations ofimpulses, meansl for locking saidv selected operated bars, selector disks, transfer mechanismsimultaneously operated interchangeably with said selector bars forV variably operating 'said -disks'and means forl locking said disks in operated position.

37. In a printing telegraph receiver, a plurality of selectors, means for, variably operating said selectors in accordance with received code combinations of impulses and means whereby said last mentioned means is non-operative except "during impulse intervals.

38. In a printing telegraph receiver, Sc-

lector mechanisms, means variably operated 1n accordance with received code combinations of. impulses, a source ot' power forcontrolling the operation of said selector mechanism in accordance with said received code combinations of impulses under control of said means, selector disks, transfer means for variably operating said selector disks in accordance to'the operation of said selector mechanism, said transfer means being controlled by said source of power and printing hammers for variablyy printing characters in accordance with the operation of saidselector disks, said printing hami mers being controlled by saidl source of power.

39. In a-telegraph receiver; a plurality of selector diks rovided with notches on their i inner circum erential surfaces; means for variably operating said disks in accordance with received code combinations of signalling conditions; a character wheel having a plurality of characters arranged about a periphery thereof; and means cooperatingV eration of said disks; a plurality of type ation of said disks; a typewheel having" characters, and means cooperating with said aligned notches for printing a predetermined character.

41. In a telegraph receiver; a` plurality of selector disks havin notches' on their inner circumferential sur aces; means responsive to received code combinations of .impulse conditions for variably operating saidl disks to bring the notches at various circumferen# tial points about said disks in alignment with each other in accordance with the opch'aracters; and means cooperating with said aligned notches for selecting said type characters.

42. In a telegraph receiver; a plurality of f selector disks provided with notches on their inner circumferential surfaces; ineans for operating said disksl in accordance with received code combinations to selectively align said notches at various positions about the circumference of said disks; a stop arm cooperatingwith said aligned notches; and a plurality of type characters variably operated in accordance with the 4position of the aligned notches with which said stop arm Y cooperates.

selector disks inner circum erential surfaces; means foi' l operating said disks in accordance with received code combinations for aligning av notch on each of said diskswithnotches on- 43. In a telegraph receiver; a plurality of rovided with notches on their the other disks at various positions about the circumference of said disks; a stop member cooperating with said aligned notches; a typewheel, and means whereby said stop member controls the printing of characters on said typewheel in accordance with the position of the aligned notches.

'44. In a telegraph receiver; a plurality of selector disks provided with notches on their inner circumferential surfaces; means for operating said disks in accordance with received code combinations to align a notch on each of said diskswith notcheson. the

other disks at various positions about the circumference of said disks; a stop arm cooperating with said aligned notches; typewheel structure provided with a pluralty of groups of characters; means controlled by said stop arm when in cooperation with said aligned notches for selectingv a character .in each of said groups; and means for selectively printing one of said selected characters. K

45. In a telegraph receiver; a plurality of selector disks provided with notches .on their inner circumferential surfaces; means for operating said disks in accordance with received codecombinations' to selectively align said notches at various positions-about the.A circumference of said disks; a stop arm co` operating with said aligned notches; a plu- A rality of characters selectively controlled by said stop arm; a tape whereon said characters are printed; and means whereby certain of said characters areprinted in oifset relation on said'tape with vrespect to the others of said characters. v

46. In a telegraph receiver; a plurality of l* notched selector disks; a rotatable type` wheel; a stop arm rotating with said typewheel; means for variably operating said selector disks in accordance with received code combinations of signalling conditions for selectively aligning a set of notches in 'said disks; means whereby said stop arm engages said alignednotches to determine the stop positionbf saidtypewheel; and means whereby a rigid stop is provided for said by said aligned notches.

47. In a telegraph receiver; a plurality of notched selector disks; a rotatable typewheel; a stop arm rotating with said typewlieel; means for variably operating said vselector disks in accordance with received code combinations of signalling conditions for selectively aligning the notches in said disks; means whereby said stop arm coopcrates with said aligned. notches for determining the sop position of said typewheel; and a :toothed disk for bringing said typewheel to a stop in a positive manner at the 'typewheel at the stop position determined position determined by said aligned notches. i

` 48. Ina telegraph receiver; a plurality of notched selector disks; a rotatable type- 'Wheel structure provided with a plurality of groups of characters; a stop arin rotating*- with saidl typewheel structure; means for variably operating said selector disks in accordance with received code combinations of impulse conditions to selectively align said notches; means whereby said stop` arm cooperates with said aligned notches for determining the stop position of said typewheel structure; a toothed disk for positively bringing said typewheel structure to a stop at the` "position determined by said aligned notches; and means for selectively printing one of a selected character in one of said groups.'

49. -In a telegraph receiver; a plurality of for positively bringing said typewheels to a stop -at the position determined by saidv aligned `notches; means for rinting a se--` lected character from one o said groups;

a tape; and meanswhereby certain of said characters are printed on said tape in olfset relation with respect to others of said characters.

4 50. In a telegraph receiver; 4a typewheel structure provided with a plurality of groups of characters; a Hrs set of selectors responsive to received code combinations of signalling conditions; asecondset of selec-l tors simultaneously operated by said first selectors; means controlled by said second selectors for selectively stopping said typewheel structure with a character of each group in printing position; printing mechanism for said typewheel structure; and means for selectively operating said printing mechanism to effect printing of alselected character from one of saidgroups.

51. In a telegraph receiver; a typewheel structure comprisingr a plurality of groups of characters; a first set of selectors responsive to received code combinations of signailing conditions; a second set of selectors simultaneously. operated by said set of selectors for selectively stopping said typewheel vstructure with a character of each of' said groups in. printing position; printing mechanism; a record tape; and means for selecsaid Lspring actuating means to operate said printing mechanism to record a selected ofl said groups.

character from only one of said groups.

53. In a telegraph receiver; a typewheel structure comprising a plurality of groups of characters; printing means for said typewheel structure; spring actuating means for operating said printing means; a first set of selectors responsive to received code combinatlons of slgnalllng conditions; a second set of selectors simultaneously controlled by said first selectors for selectively stopping said typewheel with a `character in each group in printing position; means whereby said spring actuatxiing means is tensioned for operating said p nting means; and means for selectively permitting said spring actuating means to operate said printing means :to print-a character from one or the other 54.-I1`1 a telegraph receiver; a typewheel embodying a plurality of groups of characters; printing means; a first set of selectors'responsive to a received code combination of signalling conditions; alsecond set of selectors simultaneously controlled by said first selectors; means controlled by said second selectors for selectively stopping said typewheel with a character in eachv \-.a stop arm secured to said shaft; a stop echanism-for engaging said stop arm to lock` said typewheel shaft from rotation;A

said'selector disks when operated in accordance with a code combination permitting said stop\arm to engage said stop mechanism and disengaging said stop arm from said stop mechanism automatically in response to the'setting of said selectors in accordance witla new code combination whereby said typewheel shaft is immediateyly started into rotation to Iind the new selected position; a tape; and means to cause said typewheel to print selected characters on said tape in accordance with the stop position thereof. I 56. In a telegraph receiver`;`\. a rotatable typewheel; a plurality of disk selectors simultaneously operated for determining the stop condition of said typewheel; means cooperating with said selector disks for bringing said typewheel to a stop, said means being rendered non-operative automatical- 1y in response to the setting of said selectors in accordance with a new code combination whereby said typewheel is released for rotation immediately upon the resetting of said selectors; a tape; means to cause said typewheel to print selected characters on Y said tape in accordance with the stop position thereof; and means whereby certain characters are printed 'in off set relation on the tape with respect to the others of said characters.

57. In a printer; a rotatable typewheel; a 'plurality of selectors simultaneously operated; means for setting said selectors in accordance with received code combinations of impulses and astop device associated with said typewheel conditioned by said selectors in operative position to bring said typewheel to a stop; said stop device being rendered non-operative automaticallyV in response to the movement of said selectors in accordance with the new code combination of impulses; a tape; means whereby said typewheel prints a character on said tape in IED roy

accordance with the stop position thereof; and means whereby certain characters are printed in off set relation on the tape with respect to the other characters. l

58. In a printing telegraph; a typewheel; a typewheel stop and a plurality of selector rings simultaneously operated inaccordance with code combinations of impulses for conditioning said typewheel stop to bring said typewheel to a stop position; a tape; means4 whereby said typewheel prints a character on said tape in accordance with the stop position thereof; and means whereby certain characters are printed in od set relation on the tape with respect to the other characters.

' 59. In a printer; a rotatable typewheel; a stop arm associated therewith; a plurality of selector disks; said stop arm bei-ng arranged to cooperate with said disks when operated in response to received code combinations of impulses whereby said stop arm is conditioned to bring said rotatable typewheel to a stop and a toothed disk cooperating. withsaid stop arm in its stop position` to stop said typewheel; a tape; means whereby'said typewheel prints a character on said tape in accordance with the stop position thereof and means whereby certain characters are printed in oiisct relation on the ta )e with respect to the other characters.

60. n a printing telegraph; a typewheel;

. means for rotating said typewheel; a plurality of selectors simultaneously selectively operated -in accordance with received code combinations of impulses for bringing said typewheel to a stop at a selected position, said typewheel being released for. further rotation automatically in response to the` setting of the selectors in'accordance with a new code combination of impulses; a tape;

means whereby said typewheel prints a character on said tape in accordance with the stop position thereof; and means whereby certain characters are printed in oit set relation on the tape with respect tothe other characters.

61. In a telegraph printer; a rotatable type wheel; a stop arm associated therewith; a plurality of selector members variablyY operated in accordance with receivedcode combinations of conditions for selectively determining the4 angular stop position ot said wheel; a member common to all of said seleetcr members and cooperating with said stop arm at the position determined by said selector members for bringing said typewheel to a stop; a tape; means whereby said typewheel prints a character on said tape in accordance with the stop position thereot` and means whereby certain characters are printed in offset relation on the tape with respect to the other characters. 4

62. In' a telegraphA receiver; a plurality of selectors selectively operated in accordance with received code combinations of conditlons; a set of dlsks; lever mechanism individual to and in operative relation withV each of said disks; means for moving all of said lever mechanism simultaneously toward and from said first mentioned selectors whereby said levers are variably operated to in turn variably operate said disks in accordance with the operation of said selectors;'a tape; means whereby said typewheel prints a character on said tape in accordance with the stop position thereof and means whereby certain characters are printed in y offset relation on the tape with respect to the other characters.

63. In a printing telegraph receiver; a

plurality of pivoted selector mechanisms variably operated in accordance with recertain characters are printed in oiset relation on the tape with respect to the other characters.

64. In a telegraph receiver; a typewheel structure provided with a plurality of groups of characters; means controlled by receivedv code combinations of signaling conditions forselectively conditioning a character of each group for printing; printing mechanism for said typewheel structure embodying a movable striking element; and means for selectively moving said striking element to etl'ect printing of aselected character from one-of said groups.

65. In a telegraph receiver; a typewheel structure comprising a plurality of groups. of characters; means for selectively stopping said typewheel structure with a character of each of said groups in printing position; printing mechanism comprising. a movable striking element; a record tape; and means for selectively operating said movable striking element to effect printing of selected characters from said groups in relatively offset relation.

66. In a telegraph receiver; a typewheel structure comprising aplurality of groups of characters; a iirst set of selectors responsive to a received code combination of signalling conditions; a second set of selectors controlled by said first selectors for selectively stopping said typewheel structure with a character of each of said groups in printing position; printing mechanism comprising a movable striking member operating said striking member to record a secharacter in each group in lected character from only one of said` groups.

67. In a telegraph receiver; a typewheel structure comprising a plurality of oups of characters; printing means for sai t ewheel structure embodying a shiftable striking member; single magnet means responsive to received code combinations of signailing conditions for first selectively stop'- ping said typewheel with a character in each group in printing position and thereafter selectively positioning said striking member to operate said printing means to print a character from one or the other of said groups.

68. In a. telegraph receiver; a typewheel embodying a plurality of groups of characters; printing means; a first set of selectors responsive to a received code combination of signalling conditions; a second setof selectors controlled by said lirst selectors; means controlled by said second selectors for se'- lectively stopping said typewheel with a rinting position; printing means comprising amovable striker member; and means responsive to a condition accompanying each code combination of signalling conditions operative to cause said spring actuating means to selectively print a character from one of 'said groups. V

In testimony whereof I aiiix my signature.

EDWARD E. KLEINSCHMIDT. v