US1613937A

US1613937A - Printing telegraphy

Info

Publication number: US1613937A
Authority: US
Publication date: 1927-01-11
Anticipated expiration: 1944-01-11

Description

Jan. 11, 1927.

M. P. CHAPLIN FRI NTING TELEGRAPHY Filed June 5. 1923 6 Sheets-Sheet 1 Jan.

1927 M. P. CHAPLIN PRINTING TELEGRAPHY Filed June 5. 1923 6 Sheets-Sheet 2 1927 -M. P. CHAPLIN PRINTING TELEGRAPHY Filed June 5, 1923 6 Sheets-Sheet 2 WWW mw v 5% W W wm M W M Jan. 11 1927. 1,613,937

M. P. CHAPLIN PRINTI NG TELEGRAPHY Filed June 5. 1923 6 Sheets-Sheet 4 vim/71W.- Afar/e Fwd 0)? Jan. 11, 1927. 1,613,937

M. P. CHAPLIN PRINTING TELEGRAPHY Filed June 5, 1923 6 Sheets-Sheet 5 fiya. w fiys.

Patented Jan. 11, 1927.

UNITED STATES PATENT OFFICE.

MERLE P. CHAPLIN, WHITE PLAINS, NEW YORK, ASSIGNOR TO \VESTERN ELECTRIC COMPANY, INCORPORATED, 0F NEXV YORK, N. Y., A CORPORATION OF NEW YORK.

PRINTING TELEGRAPHY.

Application filed June 5.

This invention relates to printing telegraphy and particularly to a printing telegraph receiving printer of the class commonly referred to as page printers.

An object of the invention is a receiving printer which is compact in form and et'ticient and reliable in operation and which is inexpensive to manufacture.

In accordance with the preferred form of the invention there is provided a receiving printer having a stationary platen and a type carrying mechanism which is arranged to be moved transversely of the platen, and which is moved to a selecting position by means under the control of a translating mechanism.

The translating mechanism comprises a plurality of rotatably and horizontally extending rods, which are arranged on the arc of a circle about a shaft normally tending to rotate, and which operate pivoted members in accordance with their positions. Each of these rods has one end bent at an angle of approximately 90 whereby the rods, on being rotated with the shaft, are successively brought under the control of a double-acting electromagnet. which is operated in accordance with line current impulses for causing the movement of the rods into one or the other of their operative positions. Following the positioning of the rods. a second shaft carrying fingers corresponding to the number of pivoted members is released for rotation whereby a linkage arrangement and a cam shifting arrangement is operated through the movement of the fingers as determined by the pivoted members. The linkage arrangement consists of a series of do ments. four in number. the construction of which is such that when the elements controlled bv the fingers are moved through various distances the accumulative etlcet o f such movement is being imparted to a vertically extending type whee] shaft. 011 the upper part. of the type wheel shaft and keyed thereto, yet movable vertically. is a type wheel which has the characters arranged in four sections or rings. one above the other. with 16 characters or spaces per section. As the printer is designed to operate on the liendot or five unit code, by arranging the characters in this fashion only four of the elements above noted enter into the selection 1923. Serial No. 643,591.

of any character on the section of the type wheel which is in a printing position, while the fifth element functions through a cam shifting arrangement to select one of two upper sections or one of the two lower sections of the type wheel. Printing is performed by moving the type wheel into engagement with the printing medium through the action of suitable power operated linkage ar rangen'ient.

The auxiliary functions, such as carriage return. line feed, shift and unshift are accomplished through the provision of a series of auxiliary power operating members, the selection of which is controlled by mech anism operated through the instrnn'ientality of the operating fingers, previously mentioncd.

A better understanding of the invention may be had from the following description. taken in conjunction with the accompanying drawings wherein the preferred form of the invention is illustrated.

In the drawings:

Fig. 1 is a front elevation of the receiving printer in accordance with an embodiment of the invention.

Fig. 2 is a side elevation of the mechanism shown in Fig. 1.

Fig. 3 is a partial plan view of the mechanism of Fig. 1.

Fig. 4: is a lengthwise sectional view taken along the broken line i-4: of Fig. 2.

Fig. 5 is a cross-sectional view taken along the broken line 5-5 of Fig. l.

Fig. (3 shows the mecha ism of Fig. 5 in its release position.

Fig. 7 is a detail of the translating and selecting mechanism of the printer.

F igs. 8 and 9 show the type wheel in two of its operative positions and the nuajhanism for shifting the same from either of the positious shown.

Fig. 10 is a detail showing the method of operating the auxiliary operating members for performing the auxiliary.selections. sucl as line feed, shi ft and unshift.

Fig. 11 is a detail of the mechanism used for selecting the auxiliary selecting members.

Fig. 12 is a perspective of one of the plates forming the mechanism of Fig. 11.

Fig. 13 is a detail of the mechanism for tlt) preventing the operaticm ol the spacing mechanisms upon line teed, shirt and uni-hiit, and no selection.

Fig. it. is a detail showing the two methods of operating the iarriape turn mechanism.

Fig. 15 shows the mechanism :lor advancinnand reversing the inking rihhon.

Fig. 16 shows schemati ally the circuit oraneenient wh'ch may be utilized.

The system disclosed in the drawings is prciie 'ahly operated on the Baudot code of various combinations of live selecting units which may consist either oi current and no current or positive and negative units or impulses, althonogh other codes could he used without departing from the spirit ant slope of the present invention. These iiupulses arrive from the distant train-uni[ting station (not shown) over a line L l-ig. 17(3) and pass to ground through the windings of a relay 1t). ay it) is provid d with an armature pern'ianentlj connected to a grounded source ot enerp and adapted to engage its front and baclt contacts :t'or etfooting the energization of a releasi magnet 11 and the coils of double acting selecting magnet 12.

Referring tor the mo nent to Fig 2, and 5, the release magnet 11 is shown with its armature l6 normally out oi engagement with a spring held release latch 11'. This release latch 17 has its tree end notched to receive the free end of a pivoted nm b 18, also provided on its under side projection which norn'ially engages arnr2l fixed to a shaft 22, Shaft cs:- tends across the back of the machine and has power connnunicated thereto troin a continuously runninemotor 23 through a, slip friction. clutch 2a. Arranged about the shalt 22 in the are of a circle are lire se :ctint: rods 28. 30, I); and 3' each ot which has one end bent at; an angle o'l' approztin'iatcl V and arranged in a suitable support while the other end thereof is tilted in a member fitted to the shaft 215 so as to be capable of inovnnent hm'izontally but rotatably n'mvahlc with the shalt 32. Follow ing the energization of the r l 7 ..se magnet l1 and the release of the shaft tor rotation, each of the selecting rods 28 to 32 is brought into engagement with a beveled ex'ensio'u secured to armature 3%: of, the electrinnaiznet 127 .As this soatt rotates these rods will he moved into one or the other of two mgerative positions in accorriaiu'e with the charm-tor of the line current impulses, which control the energization of the. coils of the electromagnet 12 act-ordinalyv These rods are arranged to be moved to their select-inn position consecutively, but are also arramrcd in their movement to one or the other or" these lecting positions to pass on either the left or right hand side oil a stationary locking 'ane 35 so that they are retained in the position set until subsetpiently moved due to a change in the character of the impulse which previously effected the positioning: thereof. [is shown in Figs. 3, i and '1', each ot the selecting rods 28 to 32, inclusive, has see when thereto a disc-like member 36, which tinuously rotating); motor 3} through suitable gears and a positive triction clutch to. This clutch 4:8 is similar to the one shown in Patent. 1.480239, issued. January 8, 1922i; lihereiorc, only so much of the mechanism as is necessary to a complete ruideix taiulinn oi the present invention is shown, and the description thereof will accordingly be brief.

In accordance with the showing ot 5 and 6, there is also arranged on the shaft 22 two cams 4 .9 and 50, which are adapted to engage two

arms

51 and 57 secured to shaft One of these arms will engage a projection on cam 50 at the same time that the depression in cam 4-9 reaches 51. Both armshave rollers in their ends which engage in the surface of the cams and shaft 5 is rocked positively in both directions, and held tixed in one position during: the larefer portion oi the rotation of shalt with the cams mounted thereon, To rocking shaft 52 secured a lever 53 having; a roller at its end and adapted to engage the slip friction lncn'iber ol the clutch n'icchanisin 49. Just ie't'ore shalt reaches its stop position and il'ter the rods mounted thereon have been iositioned, cams 49 and 50 art upon I'Q'Iliilitl' shaft 52 and lever 53 to release the slip friction member o't clutch 48. As described in my patent previously mentioned. lollou ing the release of the slip 'lriction clutch member, a metal disc such as is caused to move later: lly into engagement with the main friction drive :ncnihcr. (liens-( qucntly a direct drlvnin connection is eliccticd between the driving motor and the shaft 47.

As shaft 47 is rotated, the operating lngrers (it) to (341-, inclusive, will, he br ruc'ht into engagrnuueut with the selectable eleu its a o to 44-, whereby the operation lingers will he moved to a selecting position simultaneously. By contirued rotation of slurtt J each ot the operating; lingers at'ranejed to move :an'i members such as as to 7'2, in-

till

Elf)

too

tit)

elusive to tour ot' which there is secured an element of the linkage 'angculent through which rotary motion of the type wheel is imparted. Cach of these members is arranged to occupy either of two operative positions, and accordingly tour of these members through a series of lovers of ditterent lengths are arranged as to etl'ect the moveu'ient of a common bar 85 through various distances.

Connected to the fifth cam member (38 is a reciproating bar 82, which together with rams 12S mounted on each end thereof and arranged to operate a lever 11% serves to position the type wheel vertically which is rotated by the linkage ar angement. These ams, through suitable meeiamsni, will locate the type wheel in one of two possible positions determined by the cam member 08. All of the e: in members. (38 to T2 inclusive, are connected through hell cranks to correspending elements of a ball selecting device by in ans ot' waich the auxiliary tunetions or stunts are selected, and counectio is made to the source of power for their operation.

In accordance with the showing of Figs 2. 3 and 7. this linkage arrangement comprises

levers

80 and 81, the ends of which are connected through links 75. 76, FT and T8, to cam members (30. 70, 71 and 72. respectively. Levers S and 81 are pivoted between the side members of lever Points at which these levers are pivoted are so arranged that the motion of the end of lever 80. which is connected to cam member Tl. imparts a motion to the end of lever 85, connected through gear ant segment to shaft 88, a distance equal to one unit space. Similarly, the end of lever 80. connected through link to cam 72?, moves the end ol" lev r 85, and shaft 88, through a distance equal to 2 units of space. The end of lever 81, connected to cam member 30. moves the end of lever 85. and shaft 951. through it units of space. Also the end of lever 81. (ouuected to cum member 70, moves the end oi lever 85. and shaft 5 S, through 8 units of space. It will thus be seen that the various positions of cams 00, 70. T1 and will produce 10 possible positions being de'ivel at the end ot' lever and shaft 88.

As previously mentioned the end ol' lcvcr carries a ucar segment adapted to eugage pinion S7. at the lower end ol' shat't At the upper end ol shat't HS a beveled gear 89. which is adapted to engage a second beveled gear 02 mounted on shaft 0 t=llidably mounted on shaft ti l is a structure carrying the printing mechanism including the type wheel shown more in detail in Figs. 8 and 9. Included in this mechanism and slidablv keyed to shaft 03 is a rocking beveled gear 102, adapted to engage a cooperating rocking beveled gear 101, which w. ch)

is secured to the type wheel shaft 97. Secured to shaft 97. tor rotation therewith, but slidably mounted thereon is a type wheel structure 00, consisting of -41 type wheels A, 13. C and l mounted one above the other. Thus it will be seen that. the motion ot the anus (it). 70, T1 and 2, through the linkage arrangement and gearing previously described will determine the rotative position of the type wheel 95. The endwise or vertical position of the type wheels which determines which of the four wheels will be brought in engagement with the printing ribbon to give an in'ipression on the paper. is determined by two things. First, the selection of one or the other of the two upper wheels or the two lower wheels, is determined by rod 82 with cam members 128 mounted thereon, and second by rocking ot sha'tt with cams mounted thereon. The sliding of rod 82 with cams 12S, rocks lever 118 about the center of shaft 120 a distance sutticient to move the type wheel a distance equal to that between two adjacent: wheels. The rocking of shaft 120 and cams moves lever 118 about rod 82 as a pivot a distance sutlicientto move the type wheel two wheel sgnices. As has been iously described rod 82 is connected to cam member 68; hence the position of this ram member determines a selection between one of the upper or one of the two lower wheels. Shaft 126 with cams 12:") is operated by auxiliary or stunt mechanism of which a more complete description will be given later. and the position of this shaft and cam detn'mines whether one of the two lower or one or the two upper wheels w'll he used for printing. In the machine, as illustrated, the letter or lower case characters will be located upon the two upper vheels, and the figures and other up per case characters on the two lower wheels. It is possible through the linkage arrangement previously described and operated by cams (it). 70. 71 and 72, to select any one ot sixteen possible positions whereby characters located on any one of the 3 type wheels may be selected. Also by a combination ot movement between the sliding cams 128, operated by cam lever 09. and that ol rocking); cams 125 operated by the stunt mechanism. any one of the tour wheels may be located in printing position. hlechauism is thus provided tor selecting (ti posdblc positions or characters by the rotation and eudwise motion of the type wheel.

The type carrying mechanism 100 comprises a

fran'ie

106 and 107 adapted to slide endwise on shafts 0?, and 0t. Mounted between the sides of

frame

100 and 107 on pivot-s 103 and 104- is a swinging member 91 in which the type wheel and type wheel shatt are mounted. The type wheel is made in tour circular sections. mounted one above the other on sleeve 96. Sleeve 96 is slidably ll l mounted on shaft 97 but is secured against rotary movement. Shaft 97 is mounted in swinging frame 99 by journals at each end. Also secured to shaft 97 is one member of a pair of roeking'bevel gears namely gear 101, and gear 102 which is mounted in frame 107 and slidably keyed to shaft 95. These gears, 101 and 102, have been designated as rocking beveled gears for the reasons that they not only provide a rotary connection between shafts 98 and 97 but also permit of a rockingmovement of type wheel. carryins member 99 about its

pivots

103 and 10%. The pivots 103 and 10l are located in line with the meshing point of gears 1.01 and 102, and the shape of the teeth of these gears is such that at any position gear 101 will rock around a tooth. in gear 102 without ell'ecting any jamming condition between the teeth of the two gears, and also without changing the relation of

shafts

93 and 97. As will be described hereinafter, the type carriage is moved from left to right step-by-step under the tension of spring; 208 following the printing), of each character unless the cutout mechanism under the control of the 2H1X iliary selecting elements is effective for preventing the spacing action.

Printing ot' the selected character is ofl ccted by moving the type wheel carrying structure 99 with the type wheels located herein from the position shown in Figs. 1 and 2 to that shown in either oi? Figs. 8 and 9. WVhile the proper character to be printed is being selected by rotating and shritting the type wheel, as has been pre' viously described the type wheel carrying mechanism 99 is separated from the printing medium or paper, as is shown in Figs. 1 and 9. After the type wheel has been locatot, auxiliary mechanism connected to power sha'i t 4-7 is brought into play to swing the type wheel carrying; n'icchanis i 99 about its pivots 103 and. 104i, and to bring the particle lar character on the particular wheel. selected into engagement with the printing medium and paper, which position illustrated in Figs. 8 and 9. This auxiliary mechanism for effecting the motion for printing; consists of an eccentric 141, which mounted on shaft 4-7 and which has connected thereto at the bottom a lever 196 which is used for performing auxiliary functions as are hereinafter described. A second connection or link 13:") is secured to eccentric i l-1 approximately 90 from the pointot counection of lever 196. This linlt 135 connects to a lever 136 secured to shaft 133 at a point beyond the travel of the type carrying;- frame 107. Also pivoted to shaft 133 is a second lever 132 which is made adjustable for permitting a variation in the printine; blow and which is secured to linl: 197. Link 137 is connected to shaft 91 by means of a lever 1341-. In the type carrying frame 107, slidreiaes'i' ably keyed to shatt 91 is lever 138, which is in turn connected througggh linl: 139 to lever 140. There is also mounted on pivots 1.03 and 10% a locking lever 142, which is connceteo to lever 140 by spring 1&6. Suitable means is provided to ellect a definite minimum angular spacing between levers 14:0 and 1 1 so that soring 1 10 will always be under a definite tension. It is to be noted, however, that the eccent'ic 141 is effective for operating the linkage arrangement just described following; the positioning; of the type wheel in a printing: position.

true in standard typewriter practice the inking ribbon passes around the lingl'crs of a uieu'iber carried by the type wheel carria re the space between such finerrs being wide enough to permit the mover the type wheels between them.

ribbon utter each printing); operation moves back with the type wheel carriage giving: full visibility of the printed characters.

in order that the selected type will be correctly alienmh mechanism is provided for not only alienii'igr the type wheel in a horizontal plane, but also aligning the type wheel in a vertical plane. This mechanism couiprises, Figs. 2, 8 and 9. a vertically extending member 142, which has secured at its tree end a pair oi fingers 143, while at a point intermediate its ends there is secured a hui'ie-lilte u'ien'iber 1 1+ (in the low .r end oi the member 142 there is secured an extension 14-5 which normally tends to move under the action of a helical spring, but which is restrained due to the engagement of one end ot the extension with a projection on the connecting member 140 through which the type carriage is rotated. Thus, when the eccentric l 'll moves the connecting: links for dUSlHQ tl e rotation ot the type wheel carriage, the projection on the connecting; member 1410 is moved and carries with it the free end of extension 14-5 so that this extension. together with the vertically extending! member 1 moved tow: "d the type wheel. these elements are moved from their normal. position. the lingers 14- 3 assume a position on the upper and lower sides of the aligned section of the type wheel for aligg uii'ip; the type wheel vertically. At the same time. the member ll-i. engages the teeth oi a toothed wheel l-il'l carried by the shaft 9?. Accordingly, any slight displacement oi the type wheel will be corrected.

This latter feature is clearly shown in Figs. 9 and 9.

The iirst function of this lever is through its

locking levers

144 and 143 to accurately locate in both rotary and vertical directions the type wheel in the positions selected. As soon as the locking); members on lever 14s? have seated then'iselves on the type wheel and lockingwheel 14:? of the type wheel carrier mechanism 99, lever 142 becomes fixed with relation to the carrier 99 and both begin motion together about

pivots

103 and 104. Spring 146 provides a yield ing connection between levers 140 and 142 at this point so that the type carrying mechanism 9!) will be given an easy and gradual start on its printing motion, and the locking members of H2 will always be held in engagement with the locking wheel and type wheel. Due to the arrangement of the eccentric linkage connecting lever t lt) lo shalt H, the motion is rapidly accelerated so that by the time the type wheel carrier mechanism 99 reaches the position shown in Figs. 8 and 5) it will have acquired considerable momentum, and the printing through .ink ribbon or other printing medium on the paper on roll 150 will be by 'mpact similar to that applied on a type bar print-er, or the ordinary type bar typewriter. After the type wheel has come in contact w'th the paper and printed the selected. character thereon the linkage arrangement moves back to normal position, carrying with it the type wheel carrying mechanism 99 to the position shown in Figs. 1 and against stop 98. Lever 1-11-2 then continues its motion so as to move the align- ,5 members M3 and 141 to again permit the rotation of the type wheel shaft.

Positioned in front of the type wheel is a platen 15. 0 mounted on a shaft 151, which is jonrnalcd in a pair of uprights and 103. and which is capable of being rotated through the action of a pawl and ratchet mechanism for moving the paper. The paper 154 is wound on a roll 155 having ext sioiis loosely titted in bifurcated portions of supporting members such as 156 (Fig. 2) The paper -l is arranged to pass between a guide 157, rollers 158 and the surface of the platen 150, as is common practice in connection with typewriters.

As shown in Figs. 1, 8 and 9, positioned just below the lowermost section of the type wheel and encircling the shaft 97 is a circular member 110. This circular member 110 is capable of being moved either in an upward or downward direction but does not rotate with the shaft 97 as do the sections of the type wheel. Fastened to the member 110 is one end of an L-shaped member 111, which has its other end fitted with a pair of

rollers

112 and 113. Interposed between these

rollers

112 and 113 is a shalt 116 which is arranged to be moved by means of two mechanical movements. The niechanism for moving the shaft 116 in this manner comprises a pivotedlever 11$, which has in juxtaposition to its pivotal pointan aperture in which there is fitted a cam-like member The lever 118 also has an aperture 120 in the end opposite to the one which is secured to the shaft 116. Inasmuch as the carriage 100 is arranged to be moved along the shaft 116, it is necessary that each end of this shaft to eti'ect the movement of the sections of the type wheel be capable of being moved. Accordingly, at opposite ends of this shaft there are arranged two levers similar to the one described in connection with Figs. 1, 8 and 8). 1n the central aperture of each of these levers there is arranged cams 125 which are carried at oppd site ends of a shaft 126. This shaft 120, as will be more clearly described hereinafter, is rotated upon the selection of one of the auxiliary selecting elements for ca .sing the movement of the shaft 116 a distance sullicient to move the type wheel two section spaces. In order to position the type wheel to any one of its two other positions, there is titted in the apertures 12o members .128 and 129, which like the cams 125, are secured at. opposite ends of rod 82 and serve to move the levers 11b in accordance with the movement of the link 7%). Thus, when the link '72) is operated by the distributing and translating mechanism previously described, shaft 82 is moved so that the memhers 12S and 129 are shifted to engage surfaces of the apertures in each of the levers 118. Consequently the levers 118 are moved about shaft 126 so as to cause a correspond ing movement of the shaft 116 and likewise the movement of the type wheel to move either of the two of the sections thereof iiito printing position.

The auxiliary functions, such as carriage return, line feed, shift and unshift are accomplished in the present invention through the action of an auxiliary translating incchanism. This mechanism is in a number of ways similar to the arrangement disclosed in U. S. Patent 1,545,581, granted July 11, 1925. As described in the patent just referred to, there is arranged in a housing 162 a plurality of

plates

1623, 164, 165, 166 and 167. Each of these plates is capable of being moved laterally and has arranged on different centers Fig. 12 a plurality of apcu tures. In each of these apertures there is arranged a spherical member or ball. The halls in adjacent plates, under certain conditions, are brought into alignmentwith one another in a particular series for forming a rigid operating connection. The means for moving the plates 163 to 167, inclusive, comprises

tive levers

170, 171, 179, 1T3 and 171, each of which is individual to one of the connecting

links

75, 76, 77, 78 and '79. In othe words, these levers will be moved in a reordance with the operation of the operating members and 51. On the movement of these operating members in accordance with the operation of the translating mechanism the plate of the auxiliary selector will be moved for aligning predetermined ones of the spherical n'iembers or balls carried there- As shown in Fig. 12 there is arranged above and below the plates a series of horizontally extending members 1'78, which have on one surface thereof projecting elements 179. Each of these elements is arranged to engage cam surfaces in each of the plates.

such as 180 for eii'ecting the restoration of the previously selected auxiliary selecting element.

One of the plates tormin a part of the, housing 162, has two rows of apertures cor;- responding to the two. rows of spherical members or balls and has loosely fitted.

therein pins 181. .Two rows of apertures are provided in .order to acconnnodate, in

as small a space as possiblt-i the operating members of the auxiliary selecting elements, and for thisrcason some have diti'erent pivotal "points than others. Each of these pin"; is arranged upon the alignment of the spherical members or balls to which it. is individualto condition the auxiliary selecting tending rod 191 to which there secured a bell crank 192 (Fig. 2) and to which is secured a pawl 193.. Pawl 193 is arranged to engage the teeth of a ratchet wheel 19% rigidly secured to the shatt151, upon which the platen 150 is rotatabl mounted. When the heel; bar 18$) is moved due to the movement of the pin 181, the projection thereof is moved in the path of a. universal bar-196 (Fig. whereby upon the .n'iovcment of this bar throu zl'i the action of the eccentric 181 the lever lfitlwill be rotated for causing the n'iovement of rod 191. Through the movement of the rod 191 and bell crank lever v102 the pawl 193 is moved to a position where it engages the next succeeding; tooth in the ratchet wheel 194i. Con'equcnh ly. upon the upward movement of the lever 190, the rod 191 is moved so as to cause the pawl 193 to advance the ratchctwheel 19% a d stance equal to one tooth, and accordinaly position an unprinted area of the paper or printirm medium with respect to the type wheels. The backward moi ement ot' the ratchet wheel 19% is restrained by a lever on the fore end ot which is Fecured a roller normally in eng'; grement with thc teeth 01' ratchet wheel 19-1.

- ra ck Inasmuch it is desired to advance the type. carrying mechanism following the printing of each character, the mechanism for acconiplishing this feature is arranged to be operated upon each operation of the universal bar 196.. This mechanism, as is clearly shown in Figs. 1 and 2, comprises a pair of

toothed racks

200 and 201, one of which stationary while the other is movable laterally, and which are positioned just below the type carriage 100. Fixed on the under side of the type carriage 100 are a pair of pawls, one of which engages the teeth in the movable rack 201) while the other, engages the teeth in the stationary rack 201. The mechanism tormoviug the 200 and acorrespondingmovement of the typecarriage 100 comprises a bell crank lever 20 i, which has one end titled in a bifurcated portion on the edge surface of the rack 200. To the other end of tl bell crank 20st pivoted a lever 205, which is secured to a link 20c fastened. to one end of the uni versal bar, 196. A spring connects 20% and 206 in such a manner as to hold 204iand 205 normally in a straight. line against a lug on 205. This spring yields under space out out operation as will be'described later. Thus, upon each otmration of the universal bar 1% the link 206 will lie-pushed upwardly for causing the movement of lever 205 and the rotation ot' bell crank lever 20-1 togethcr with the n'iovement of the toothed rack 200. For each li'ull mo veulent of rack 300 the type carriage will he stepped to the right owing; to the engagement oi the pawl carried by the carriage 100 with the teeth of this rack a distance sutlicicntto allow the other pawl to engage the next succeeding tooth in the stationary rack 201. Now, upon the restoration ot the bell crank lever QO-l through the downward movement of the link 206 andlever 205, the rack 200 will be moved to its normal position, but the type carriage 100 will remain in the new posilion owing to the engagement of the pawl carried thereby with another tooth in the stationary rack 201.

As is common practice in receiving print crs wherein the messages are printed in page form. the type carriage lSlIlOVPll from left to righta rainst the tension ot'a carriage return spring. The carriage return spring in the present instance is designated by the nun'ieral 208, which has one end fastened to the carriage 100 so that for each movement of the carriage greater tensionis placed on the carriage return spring 208. hen it it desired to: turn the carriage to its extreme left hand position it is necessary to set the plate-'1 163 to 167 in a manner such that another set of the spherical members or balls are aligned. The aligmnent ot the spherical members in the plates 163 to 167 inclusive, is such that the pin 181 individual to link 209 is operated to cause the rotation 0t bell crank lever 210 (Fig. l l), whereby link 209 is moved laterally. Accordingly, the bar 2 1 is moved directly lor effecting the return of the type carriage. Cne end of the bar 211 is bifurcated and has titted therein a pin 212 carried by a crank 213. The crank 2153 is reeured at one end ot' a rod 2H, which also has secured thereto a lever 'ihe ever M5 is secured to a memher 2H3, which his secured at opposite ends bell crank levers iii and 218, these bell crank levers having one arm connected to th member 2U) interposed between the

racks

200 and 201. i hen tl e bar 211 is moved rod 2l lwill be rotated it r imparting to member 2h; a horizontal movement, which through the bell cranks 217 a 1d 21h produces an upward movement: of the memb r 21$) for causing the disengagement of the pawls in engagement with the teeth in the racks 2th) and 2tll. Ina nnch as the carriage ltlt) is move-.l 'i'rom left to right under the tension of sprin ,t at. the ins.

' 1. the pawls are di-.-:engaged from the teeth in the racks 20-0 and 201. the carriage will he returned to its normal position due to the rction ot' the retractile spring 208. In orto insure the complete restoration ot carriage 100 to its extreme left hand poion independently of the moven'ient oi the bar 211, a latch havinga, shoulder for engaging a projection 220 on the bell c :tnk lever 21?, is provided. Thus upon the movement of the member 216 to the right, the shoulder on the latch engages the. projection on bell crank lever 21? whezeby the member 219 is held in its uppermost position tor maintaining the pawlu out of engagement with the teeth of the racks 200 nil 2t)l until the *arriage has been returned 0 its starting po ition. The latch 225 is also provided with an upwardly projecting: portion 226, which upon the engagement of the shoulder with the projection on the bell crank lever 217, is moved in the path of the carriage 100. When the carriage 100 has completed its travel. a portion thereo engages the projection 226 arising; the

ror disengagen'lent ot' the shoulder thereof with projection 220 on the hell crank lever 22?, whereby the nember 216 is allowed to as same its nominal position.

it is often desirable to etl'ecti the restor: tion of the type carriage to its normal position manually and independently of the mechanism wl ieh causes this operation in accordance with a predetermined combination of code impulses. In the present case this: is :wcomplished by provirlingr a lerer which has one end iasitened to the bar 211 while ts other end is rnitably secured to a c 'ank 230 (Fig. 1). Upon the operation oi the crank 230. bar 2H is moved so that the member 2th is moved lateral y 'l'or tlllfl the movement ot the hell crank

levers

217 and 218 in a manner to effect the disengagement of the pawls carried the type carriage 100 with the teeth in the rocks 20'.) and 20].

As previously desc ibed, the type wheel may be moved to position the diti'erent 'ows of charzmters in a printing position by means (it two indepeinlentiy operable mechanisms. ()ne of these nwchanisms has already 'ieen described, and the other will now be considcred. Cams 125, there being; two in number are secured at opposite ends oi? shatt 126. which is arranged to be rocked whene 'er the corresponding hook bars thereot are moved so that the projection car 'ied thereby is in the path of the universal bar ltltt. llach of these cams 127) is titted in the central aperture ot. corresponding levers 118 and is arranged so that upon the rocking ot the shalt 126, the member 118 will be moved about shalt S2, de'iending upon which of the cam sn faces of the cam 125 is in engagement. is in the other auxiliary selections. the hook oars tor ett'ecting the rocking; movement of the shaft 126 are controlled by a series of spherical members or balls arranged in the plates 1(33 to 16?. which are noved to their various positions by the operating nien'bors 168 to 172. As shown in Fig. ii, the shaft 126 carries a n'iember 235. which at opposite ends has secured thereto hook bars 236 and 237. The hook bar 236 is arranged to be moved so that the projection thereof is in the path of the universal bar 196 due to the movement of connecting link 2138, which is operated by means ot one of the pins individual to a series oi spheri tnl members or balls in the same manner as described in connection with the operation ot the line feed mechanism. Likewise, the hook bar 23 is shifted for moving its projection in the path of the universal bar tilt) by the movement of connecting); link 23f). \Vhen either of the projections on the hook bars 236 or 23? is in the path of the universal bar 196, shaft .126 will be rocked due to the movement of member 23:) to a position such that cams 125 cause either an upward or downward movement of the member 118 to produce a corresponding movement of the type wheel in accordance with which one oi the hook bars is selected. it is to be noted here that the cams 125 ett'ect the shifting" of the type wheel from positions A to C. it to I), D to it and C to A. that is, when the cams 125 are eti'ective, the type wheel may be shifted from any of thesepositions. With the type wheel in these positions. it may be shifted from either the section just above or below by merely causing shaft 82 to be moved late all; tor musing" the engagement ot the cam surfaces of i. embers 12S and 125) with the surfaces of the apertures 120 and one of the levers 113. Attached to the lever 2135 in the same manner llitl LII as is hook bar 237 is a second hook bar 228 which through link 227 fastened to the pivoted levers 185 is operated by the spherical members when in space combination.

In the operation of the line :t'eed, shift and unshil't and carriage return mechanisms and when no selections are received it is desirable to prevent the operation of the spacing niechanis-im. liiowevcr, on the other :lour conditions, when it is desire i ll at the :arriage be not spaced, auxiliary means must be provided to accomplish this as is illustrated in detail in l ig. 13. ".he hell crank 204, which operates the reciprocating rack, is connected to the source oi power or lever 196 through a pivoted member 205 and a link 206. 'lhe spring connection between lever and link 20%; ni'irn'ially holds levers 20 iand 205 in a tired position or a straight line. Connected to ltwcr 20% is an L-shaped member 232. 'lhis member 282 is so arranged and locatet that it is directly above the levers 185, when they are in their ope 'ated or selected posititm. Such of levers 185 as are includeiil in the :-:tiu1ts on which it is desired that the space ti'mctiot he not included, are provided with extensions which iOl'llt, directly under member 232. When one of these stui'its is sch et. the link 206 will move levers 2H5 and 2h?- upvard and space the carriage toward. However, when the lever 20l: starts to come back to its normal position member 232 attached thereto will encounter the tops oi? one of the levers 185, which will prevent lever 20% from moving further with link 29-", which will continue its motion downward, carrying with it. lever 205 and stretchiiuy the spring connection lvetwcen the link zoo and lever L lli. arresting the motion in lever 20s the reciprocating rack 200 is not allowed to come back il'ar enough to pick up a second tooth by the pawl on the printing unit. Hence, on the succeeding cycle, when spacing would normally occur, the printing unit will not be spaced for the reason that rack 202 will not he oscillated. Thus, it will he seen on stunt, selections where spacing is not desired the carr'age is actually spaced forward during the cycle which receivcd and performed the stunt operation but is prevented from spacing during the next succeeding operation.

Another feature of the present invention is the provision of mechanism whereby the line feed mechanism may be opera ted simultaneously with the carriage return mecha nism. The mechanism for performing this function comprises merely an additional hook bar 233, which, upon the selection of the lever 15 individual to the carriage return mechanism causes a hook bar connected to line .leed lever 190 to he moved so that its extension or projection lies in the path of the universal bar 1%. The provision of the latter feature enables the return of the carriage and the operation ol the line l'eeding mechanism by the transmission of a single secured at one end of a shaft 246. Intermediate the ends of the shaft 246 is a ratchet wheel 247 arranged to be rotated by a pawl 2-1-8 (Fig. 2), operated by a hell crank lever 24) (Fig. 1), and secured to a member 250. Each time the s iiacii'ig iuechanism is operated, member 250 oscillates through a connecting link 25l with each oscillating movement oi. rack 200 and thri'iugh connecting levers oscillates pawl 2&8 and rotates ratchet wheel 247 in one direction which is held by retaining pawl 251. liiasiiiucli as ratchet wheel 247 is secured to rod 2&6, a corresponding rotation of beveled gears 245 and 24:4: is brought about to]: causing the rotation of ribbon spool 241 and the winding of the inking ribbon 2h) on this spool.

Near each end of the inking ribbon 241i) is secured a button which is large enough to prevent the inking ribbon, which passes through a bi'lur *ated portion of a rotatable lever 25?, from completely unwinding. lVhen the button engages the lever 253, member 254; will be moved to the left. The movement oi the men'ihcr 25 t to the left :auses the lllOVtlIlGl'lt ot a pair of arms and 256, each of whici is provided with shoulders which may be moved .in the patl of a vertically extending element 257, also seemed to the oscillating mcn'iber 250. As shown in Fig. 15, there is also secured to rod 246 stops 258 and 259, having a surface thereof engaged by the free end of: one of the arms and 256. lVhen the member is moved to the le t and one of tharms 255 is moved so that its shoulder lies in the path of the element 257, the rod 246 will he moved to the left for causing the disengagement of the beveled gears 24?: and and the engagement of the beveled at the opposite end of shaft 24-5 with the gear socured to the shaft to which the ribbon spool 242 is secured. The next time the spacing mechanism is operated the oscillating memher 250 operates to cause the movement of the stepping pawl 24-8 in the manner previouslydescribed, but owing to the engagement of the beveled gear individual to the ribbon spool 2&2 with its associated beveled gear, the direction of t'avel of the inking ill? ribbon 240 will be reversed and the inking ribbon now wound on the latter spool. For holding the reversing mechanism in either of its operative positions there is secured to shaft 2% a member 260 which has two cam like surfaces and which is engaged by a spring held locking member 261.

The operation of the printer mechanism described hereinbefore relative to a particular type selection and the operation incident thereto will now be described.

Assume for the sake of illustration that it is desired to select and print the character P. Further, assume that the character P comprises the following selecting current units; no current, current, current, no cur rent and current. Also assume that the type wheel is in the position shown in Fig. 8, in which position the section I), carrying figures and other special characters, is in a printing position, and that the letter P is carried by section A.

Prior to the transmission of the select ing current units for the selection and the printing of the character P, it is necessary to transmit a series of impulses designated as letter shift impulses. These impulses up on being received over the line L operate line relay 10 for causing the operation of the release magnet 11 and the coils of the don ble acting selecting magnet 12 and the positioning of the selecting rods 28 to 32, in elusive, to one side or the other of the associated stationary vanes. These selecting rods, being positioned to one or the other of their operative posit-ions, effect the se ting of the operating members 68 to 72, inclusive, through the medium of the lingers 60 to 6d, inclusive. As previously described, each of the operating members 68 to 2, inclusive, controls one of the plates 163 to 167, inclusive, which have arranged therein spherical members or balls. Upon the positioning of these plates in accordance with the letter shift signal, auxiliary selecting member 238 will be selected for moving the hook bar 236 in the path of the universal bar 196. The universal bar 196 now enaging the hook bar 236 rotates element 235 for causing a similar displacement of shaft 126, upon which oppositely disposed cams 125 with respect to levers 118 are formed. The rotation of cams 125 accordingly causes the downward movement of lever 11S and then shifts the type wheel from the section D to the section B, which carries a certain number of the letters of the alphabet, the remaining ones being carried by section A. As previously described, the present invention provides mechanism whereby but four elements enter into the selection of a particular character on one of the sections of the type wheel, while the fifth element serves to select between one of two seetions of the type wheel.

Taking up the description now for the selecting and printing of the character P, it being of course understood that prior to the transmis. on of the selecting current units characteristic of the character P, it is necessary to transmit over the line L an impulse designated as a starting impulse. This impulse in the present case causes the decnergization of line relay 10 and the closure of the its back contact, whereby release magnet 11 as well as the right hand coil of elcctromagnct 12 is energized. It is to be noted here, however, that the energization of the right hand coil of electromagnet 12 has no effectfor the reason that the shaft about which the selecting rods 28 to 32, inclusive, are arranged, is now held against rotation due to the engagement of stop arm 21 with the projection on latch 13. The euergization of release magnet 11, however, causes an upward movement of release latch 17 through the attraction of its armature 16, whereupon latch 18 by the action of a retractile spring frees the stop arm 21 for rotation. Power being applied to shaft upon which the stop arm 21 is secured, through a slip friction clutch from a continuously rotating motor, shaft 22 will now be rotated. Consequently, the selecting rods 28 to 32, inclusive, will be rotated with shaft 22 and moved consecutivcly to one side or the other of the stationary locking vane in accordance with the energization of double acting magnet 12. For the first of the selecting current units, line relay 10 will be deenergized for causing the energization of the right hand coil of selecting magnet 12. The armature 34 of selecting magnet 12 will be moved so that the beveled extension carried thereby will lie in the path of the bent end of selecting rod 28. On this operation the selecting rod 28 is brought into engagement with the extension on the armature 3a of electromagnct l2, and will be moved to the right, in which position it will remain owing to the passage of the bent end of this rod on the right hand side of the stationary vane 35. The next two selecting current units consisting of current, line relay 10 will be euerized, whereby the left hand coil of electromagnet 12 will likewise be energized. For this condition the beveled extension carried by armature 3+: of the selecting magnet 12 will be moved to the right so that upon the further rotation of shaft 22 and the engagement of the bent ends of the selecting rods 29 and 30 with the extension carried by armature 3 1, these rods will be moved to the left. In the case of the next selecting current unit, rod 31 will be moved to the right of the stationary vane 35 in a manner similar to that described in connection with selecting rod 28. Selecting rod 32, like selecting rods 29 and 30, will be moved to the left of the stationary vane 35. As previously described, each of the selecting rods 28 to 32, inclusive, has individual thereto selectable elements designated by the numerals 40 to at, inclusive. These selectable elements 40 to 4st, inclusive, Will be moved consecutively in accordance with the movement of the selecting rods individual thereto.

New following the positioning of the selecting rods 28 to 32, inclusive, cam as, which is also secured to the shaft 22 has its raised portion brought into engagement with lever 57 secured to rod 52. When the raised portion of cam 19 engages lever 5?, rod 52 will be rotated a distance sufficient to remove the stop member 53 out of the path of member 54:, which forms a part of the clutch 48. As previously described, shaft is rocked positively in both directions and after the re lease of the stop member 53 it is effective for effecting the operation of shaft 52 to cause the stoppage of clutch 48 after it has completed its cycle of rotation.

After the positioning of the selecting rods and just prior to the completion of the cycle of rotation of stop arm 21, this arm 21 engages pivoted member 25 whereupon member 18 is rotated about its pivotal point to bring the projection thereof in the path of stop arm 21 and cause member 17 to again lock it in position.

The stop member 53 being now out of the path of member 541-, the elements of clutch 48 are brought into action and the shaft 47 is rotated by power communicated thereto from the continuously rotating motor 23 through the parts of the clutch l8. Upon the rotation of shaft -17, the operating fingers 6.0 to 6d, inclusive, carried thereby will be moved upon their rotation in accordance with the positions of the selectable elements 40 to 4.4., inclusive. It is to be noted here that the movement of the operating fingers to 64 is simultaneous. The shaft 4-? continues its rotation and causes the operating fingers 60 to 64, inclusive, to pass on one side or the other of the operating members 68 to 72, inclusive, individual thereto in accordance with the positions of the selectable elements 40 to 44, inclusive. Each of the operating members 68 to 72, as is more clearly shown in Figs. 3 and a, is fan-shaped so that as the operating fingers rotate with shaft er, the operating member individual thereto will be moved either to the right or left, depending upon the position of the operating fingers.

Four of the operating members have secured thereto an element of the linkage arrangement, which, through its movement causes a corresponding movement of lever 85 in various distances in accordance with the operation of the links '75, 76, 77 and 78. The movement of these links causes a correneiaasr sponding movement of lever 85, which through the engagement of the teeth carried by one end thereof with the teeth of spur gear 87, causes the type wheel to be rotated for bringing the desired character into a printing position. The fifth of the operating members does not enter into the selection of a particular character in a row, but does function to select one of two rows. In accordance with our previous assumption, the character P is carried by a section A and the type wheel is now in a positionfo-r printing characters from section B. Operating member 72 for the particular condition chosen being'operated, shaft 82 will be moved laterally for causing the movement of members 128 and 129, and accordingly the shifting of the lovers 118 for moving the type wheel from section B to section A, upon which the character P is mounted.

Following the rotation and endwise'movement of the type wheel to bring the desired character into a printing position, eccentric 14 1 through the links 185,157, and 139 and the bell crank levers 136 and 138 causes the type carriage to be rocked about

pivotal points

103 and 104;. As previously described, this is accomplished by the movement of the projection caused by member 140 out of the path of member 145 whereupon rod 142 under the action of spring 146 is moved forward. In its movement rod 142 causes the correct alignment of the selected type both vertically and horizontally and the further movement of the type carriage to the effect the printing of the selected character. Following the printing operation the eccentric 14.1 through the connecting levers moves member 14-0 so that its projection again engages member 145 for returning the type carriage against its stop 98 and the re turn of the rod 1:12 to its normal position as shown in Fig. 2.

As the eccentric 1 11 is operated, universal bar 196 is likewise operated for causing the operation of the spacing mechanism and the spacing of the type carriage to the right for spacing between characters, as has been previously described in detail. F or each operation of the spacing mechanism, as has also been previously described, ratchet wheel 24:7 will be rotated through the action of pawl 2&8 for causing the rotation of the ribbon spool, which has the teeth. of its beveled gear in engagement with one or the other of the beveled gears carried by shaft 246.

Although the invention has been disclosed and described in connection with a particular type of apparatus, it isv of course obvious that various departures may be made without departing from the scope and spirit of the invention.

What is claimed is:

1. In a printing telegraph receiver, a type wheel having the characters arranged thereon in several rows, positioning mechanism therefor comprising a plurality of selecting elements, a corresponding number of selectable elements operated thereby, means controlled by certain ones of said selectable elements for determining the row from which the character is to be printed, means controlled by others of said selectable elements for positioning the type wheel to bring the desired character in the particular row selected into a printing position, and means for moving the type wheel to effect the printing of said desired character.

2. In a printing telegraph receiver, a type wheel having the characters arranged thereon in a plurality of rows, means for selecting a row and a character in the selected row comprising a distributing mechanism controlled by line current impulses, a translating mechanism operated by said distributing mechanism for moving said type wheel to bring the row and character therein into a printing position, and means operated following the selection of the character for moving said type wheel to cause the impression of the selected character on a printing medium.

3. In a printing telegraph receiver, a type wheel, means for determining the character on said type wheel to be printed comprising distributing mechanism, a series of selectable elements operated successively by the distributing mechanism, operating members having two operative positions and adapted to be moved simultaneously in accordance with the setting of said selectable elements, and means operated by said operating mem bers for positively moving the type wheel to bring the desired character into a printing position,

4. A self-contained receiving printer and distributor comprising an electromagnetic means responsive to line current impulses, means arranged to be selectively positioned in accordance with the operation of said electromagnetic means, a power shaft, means for releasing said power shaft following the operation of said second recited means, and means carried by said power shaft and operated in accordance with the position assumed by said second mentioned means for selecting and recording a desired character.

5. A self-contained receiving printer and distributor comprising electromagnetic means responsive to line current impulses, a plurality of selectableelements positioned by said electromagnetic means, a power shaft, means for releasing said power shaft following the positioning of said selectable elements, and means carried by said power shaft and operated in accordance with the positioning of said elements for selecting and recording a desired character.

6. A receiving printer comprising a type wheel having the characters arranged thereon in a plurality of rows, means for selectively positioning the type wheel to bring the row and the desired character in such row into a printing position, and means operated following the positioning of said type wheel for correctly aligning the type wheel in two directions with respect to a printing medium. v

7. A receiving printer comprising a type wheel having the characters arranged thereon in a plurality of rows, means for selectively positioning the type wheel to bring the row and the desired character in such row into a printing position, and means effective after the positioning of the said type wheel for rocking it to cause the printing of the selected character.

8. A receiving printer comprising a type wheel, having the characters arranged thereon in a plurality of rows, means for selectively positioning the type wheel to bring a row and a desired character in such row into a printing position, means effective after the positioning of the said wheels for rocking it to cause the printing of the Selected character, and means operated prior to the completion of the printing action to shift said type wheel to correct for any slight displacement thereof.

9. A telegraph receiving printer comprising a type Wheel having the characters arranged thereon in a plurality of rows, means for imparting a vertical and rotary motion to said type wheel to bring the desired character into a printing position, and means for moving said type wheel, following the positioning thereof into a printing position to correct for any slight vertical or lateral displacement.

10. A telegraph receiving printer comprising a type wheel having the characters arranged thereon in a plurality of rows, means for imparting a vertical and a rotary motion to said type wheel to bring the desired character into printing position, means for causing the printing of the selected character and means eflective prior to the printing action for moving said type wheel both laterally and vertically to correct for any slight displacement.

11. In a printing telegraph receiver, a type wheel having the characters arranged thereon in a plurality of rows, means for selecting the rOW and character in the row comprising distributing mechanism controlled by line current impulses, a translating mechanism operated by said distributing mechanism for moving said type wheel to bring the row and character in the row in a printing position, and an all mechanical means operated following the selection of the character for causing the movement of said type wheel to elfect the impression thereof on a printing medium.

12; Aareceiving printer comprising a type Wheel, positioning mechanism therefor consisting of an electromagnet device responsive to line current impulses, a plurality of se- 5 lecting elements positioned in accordance With the operation of said electromagnetic device, means operated in accordance with the positions assumed by said selecting elements for determining the character on said type Wheel to be printed, and an all-16 mechanical connection efi'ective following the positioningof said type Wheel to cause its movement and in consequence the impression of the selected character on a printing