US2284681A - Recording and exhibiting mechanism - Google Patents

Description

une 2, 1942. L. M. POTTS' 2,284,681.

RECORDING AND EXHIBITING MECHANISM Filed May 15, 1939 8 Sheets-Sheet 1 Bnnentor 279 LOUIS M. POTTS I13 (Ittorneg Julie 2, 19 42. o 'rs 2,284,681 I RECORDING AND EXHIBITING MM'ANISM Filed May 15, 19:59, BSheets-Sheejh 2 'IIIWIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII(I(IIIIIIQ a J 295 am FIQ.2

INVENTOR. LOUIS M. POTTS June 2, 1,942. M. POTTS 2,284,631

' aEconnim AND EXHIBITING MECHANISM.

Filed May 15, 1959 s Shee ts-Sheet :s

\ Q I I D "554 'mumum i LOUIS M. TS

A ORNEY.

INVENTCR.

POT

June 2,1942; v L. M. Po1 "rs 2,284,681 f V RECORDiNG AND EXHIBITING MECHANISM Filed m 15, 1959 s Sheets-Sheet 4 w mt LOU-IS M. POTTS June 2, 1942. I

L.- M. POTTS RECORDING AND EXHIBITING MECHANISM Ffiled May 15, 1939 DINVENTOR. LOUIS M. POTTS AT ORNEY. v

s Sheets-Sheet s I L. M. POTTS RECORDING AND EXHIBITING MECHANISM POTTSY INVENTOR.

LOUIS M ATTC {N511 8 Sheets-Sheet- 6 r ms W1. t

Filed May 15,. 1939 WE hmm 00 N00 0mm 7 mvv 7 2m 2m hmw now NOD wnw Nnm QQM Eh Now NE 7 June 2, 1942.

June 2, 1942.

L. M. POTTS RECORDING AND EXHIB'ITING MECHANISM 8 Sheets-Sheet 7 Filed May 15. 1939 v FIG;

IN VENTOR.

M. POTTS LOUIS ATToRNEir.

June 2- -L. M. POTTS 2,284,681

RECORDING AND EXHIBITING MECHANISM Filed Mayvl5, 1939 a Sheets-Sheet a JNVENTOR. LOUIS M. POTTS ATTORNEY.

Patented June 2, 1942 ltECORDING AND EXHIBITING MECHANISM Louis M. Potts, Evanston, 111., assignor to Teletype Corporation, Chicago, 111., a corporation of Delaware Application May 15,1939, Serial No. 273,672

6 Claims.

This invention relates to telegraphic printing and displaying apparatus and particularly to the recording of stock quotations and the projection of images the quotations upon a viewing screen. v

This applicationis a continuation in part of application Serial No. 525,189, filed March 25, 1931, renewed May 3, 1939.

An object of the invention is to record on'a plurality of tapes in a printing telegraph apparatusall of the quotations pertaining to a selected group of stocks, each of the tapes being assigned to receive all of the quotations with reference to one of the stocks of the group, and to project on a screen quotations from corresponding portions of a group of tapes including the last quotation recordedon each of the tapes in the group.

Another object of the invention is to advance each tape across the field of the projecting appavarious'printing positions under the control of a code disc selecting device. Selector magnets individual to each of the discs'in the code disc selector are provided for setting the discs to control the arrestment of the type wheels. A second similar selecting device also having its selecting discs individually controlled by selector magnets controls the arrestment of a second shaft carrying interference fingers, identified with the horizontally movable tapes, the, function of the fingers being to co-act with .the printing mechanism of the selected tapeto print-the selected character as determined by the first-mentioned selector mechanism on/the selected tape.: A third power operated shaft operates the printing mechanism for which arlji'inter'ference finger has been selected and an auz'riliary, shaft controls the tape feeding mechanism, the advancement of inking ribbon,

- and other functional operations.

ratus only as'an incident to the printing of quotations upon that tape so that the viewing screen shall at all times contain images of as many quotations. on each tape in the field 'of its projecting apparatusas'the dimensions of that field will accommodate, and those quotations shall be the latest with reference to the stock represented by that tape.

The invention features printing telegraph apparatus having a plurality of tapes movable in parallel paths and a plurality of type wheels carried by a single shaft and corresponding in number to-the number of tapes for'cooperation therewith individually, and in which the signals representing the stock designations preceding the price quotations condition individual printing mechanisms in preparation for the printing of the quotation upon the tape assigned to receive quotations from that stock. Quotations for. stocks not included in the group to be recorded are discarded in the selector mechanism and have no effect upon any of the printing mechanisms.

The invention also features the division of the horizontally movable tapes in a printer into separated'groups, each group having itsown source of illumination and optical system, and having images projected therefrom'upomits own viewing screen or upon an assigned portion of a large .screen independently of the projection of images from other groups of tapes, the several groups of tapes being served by individual type wheels carried by .a single type wheel shaft.

Agcording to one embodiment of the invention;

I a plurality of type wheels is carried on a common rotatable shaft adapted to be stopped in In an alternative einbodimentof the invention the type wheels are carried by .a single continuously rotatable shaft which extends through and,

is controlled by a code disc selector mechanism. .The code disc selector mechanism is controlled by a single magnet printing telegraph apparatus selector which also controls the setting of code bars. The code bars control the setting of store age code bars arranged insets for storing selective conditions corresponding to the individual letters of the stock designation. The storage bars control the selection of printing interponents, there being one for each of the tapes, and

when the sets of storagebars are positioned for a stock designation outside the group to which the printer is adjusted to respond, no printing interponent is selected.

The code disc lector device does not arrest the type 'wheel' b ft mechanism whicli s es the selected tape against the rotating type wheel, the selected character being printed while the type wheel is rotating at normal velocity. During the reception'and printing of the stock price, the figure shift mechanism disables the storage code bar setting mechanism so that the signals for the price selection shall not interfere with the settings of those bars which have resulted in the selection of a printing interponent.

Tape feeding and ink ribbon feeding operations are performed as an incident to the printing operation. This embodiment of the invention features ,an arrangement for advancing blank tapeipast the printing position a sumcient dis- -tance to bring the last printed quotation into m ely trips off a printing the field of the projecting apparatus, and when I the next quotation is to be printed upon the same tape the tape is retracted so as to print the new quotation closely adjacent to the one previously printed in order that as many quotations as possible may be contained in the length of tape that is within the field of observation or of the projecting apparatus.

Two quotation projecting systems are disclosed. In one of these the optical system consists entirely of lenses, the light beam extendir J in a straight line from lamp to screen with the tapes being interposed between these two elements. Another projecting system which features compactness as one of its primary considerations involves the use of a plane reflector for turning the beam of light through 90 degrees whereby-the optical system and the printer may be contained in a housing requiring less space from front to back than the first described projecting system.

A complete understanding of the invention may be obtained from the following detailed description, reference being had to the accompanying drawings wherein;

Fig. l is a diagrammatic .perspective view of one embodiment of a multiple tape printer;

Fig. 2 is a plan view of the printer shown. in Fig. 1;

Fig. 3 is a view showing diagrammatically a projecting system for use with the printer shown in Figs. 1 and 2; I

Fig. 4 is a diagrammatic view representing a vertical section through the projecting system shown in Fig. 3;

Fig. 5 is a schematic perspective view of another embodiment of a multiple tape printer;

Fig. 6 is a front elevational view of the multiple tape printer shown in Fig. 5;

.Fig. 7 is an elevational view taken at the righthand end of Fig. 6;

Fig. 8 is a horizontal sectional view taken approximately on the line-B8 of Fig. 6;

Fig. 9 is a detailed view showing the printing bail operating and restoring mechanism;

7 Fig. 10 is an exploded perspective view of the storage code bar bail selecting and operating mechanism;

Fig. 11 is a detailed perspective view, of the letter code transferring mechanism;

Fig. 12 is a vertical sectional view of the tape puller mechanism;

by the gears through the medium of individual. It will be 'aasaesr Fig. 18 is a view of a fragment of a tape upon which characters have been printed by means of the type wheel shown in Fig. 17, the tape being viewed from the front.

Referring now to the drawings and particularly to Fig. .1, the reference numeral IOI designates shaft couplings by means of which the upper portions of the type wheel, tape selecting, printing, and other operating shafts may be disconnected from their lower driving portions, the purpose of the couplings being to permit the separation of the superstructure of the printer from its base. The couplings IOI comprise co-operating cylindrical elements I02 and I04 secured to the lower and upper shaft portions respectively, the coupling member I02 being provided with a pin E00 and the coupling member I04 being provided with a slot I05 in which pin I00 is disposed. The main driving motor I06, speed governed by governor I01, has a pinion I08 on the motor shaft 609. Pinion I08 meshes with gear M2 on cross shaft II3, carrying at its extremities coupling halves I02 and I04, the co-operating halves of the couplings, also numbered I02 and I04, being carried by shafts H3 and H3" which may extend to adjacent printers, similar to that shown in Fig. 1, for driving all of them from the motor I06.

Also keyed to the shaft I I3 is a gear i It in mesh with a gear II 5 secured to the intermediate shaft H6. Three gears II9, I22, and I23 are secured to shaft H6 and-these gears are in mesh with gears I24, I25 and I26 respectively, carried by type wheel shaft I2I, printing shaft I20, and tape selection shaft I29 respectively. The gears i2 5, I25, and I26 are arranged to turn independently of ,arrestment of their associated shafts, but the shafts when released for rotation may be driven friction clutches I32, I32 and 32".

understood that all of the shafts thus far referred Fig. 15 is a horizontal sectional view, partly each group;

Fig. 17 is a fragmentary view of a type wheel having the types so arranged thereon that upright, normal images of figures shall be observable on the viewing screen; and

light in construction, comprising a hub by means of which a light web supports the drumupon which the characters are engraved. In the preferred embodiment the characters comprise numerals from 0 to 9, the asterisk and the blank portion. The characters of the same kind are in vertical alignment upon all type wheels. Upon bringing a selected character to the printing position the same character on all type wheels is selectively positioned.

Stationarily supported upon a frame portion (.not shown) of the machine is a code disc selector mechanism I43 which is coaxial with type wheel shaft I21 and through which the shaft extends and rotates. The code disc selector I43 may be substantially identical with that shown in Patent 1,821,110, granted September 1, 1931, to S. Morton et al. This device comprises a central spool member (not shown) to which are fastened the upper and lower guide discs IM' and I45 respectively, and the fulcrum disc I46. Ro-

tatable upon the central spool through a small angular distance to one or the other of two selective positions are code discs I41. Spacers of appropriate'form serve to maintain a definite axialspacing of said discs but allow free rotary movement thereof. Discs I41 are formed with V notches on their periphery and are limited in their angular movement by elongated slots therein within which there are contained the bolts serving to fasten the selector assemblies to- I41 are stop pins I48, there being a pinfor each character position of the type wheel and one for the blank position.v These pins are spaced equally about the periphery of the selector and are guided in radial slots in the guide discs I44 and I45. fl notch in the lower end of each pin engages the edge of the disc I45 and permits the pin to pivot freely thereupon. A coil spring I49 encircles the pins I48 and is retained in position by a bowed portion in. each pin wherein the of impulse conditions transmitted from a local by their yokes I52.

afflxed to the framework are the four T-levers' I51, the leftwardly extending arm of each of I45 each pin is/provided with four freely rotat able rollers to r uce the spring induced friction of the pinsq; ainst the code discs I41 as the latter'are shifted into selective combinations.

Selective setting of the discs I41 is brought about in response to received code combinations;

or remote source. For this purpose there is provided a group of four selecting electromagnets II adapted to be energized in selective combinations by current through a common'switch 219, the relation of. which to the complete communication circuit isshown in Fig. 34' of the application of which the present application has been identified as a continuation in part.

gether. In operative relation with the code discs tractile springs I58 urge the discs I41 clockwise toward their'alternate or selective spacing positions. It will be seen that the action of each magnet I5I upon its individual disc I41 is independent of the others andselective operation of the former results in selective settings of the latter. The selector @magnets I5I need remain energized only for 'an interval of suficient length to enable ,the locking in the selected settings of the disc I41, which will preferably remain locked until the resultant selective operation has been performed. The manner in which the locking of the code discs I41 may be accomplished will be described hereinafter.

The notches in the discs I41 are arranged so that selective'permutational combinations of the rotative positions of the discs will establish single complete alignments of notches in various angular positions as fully disclosed in the previously identified patent to Morton et a1. Upon the occurrence of an alignment of notches, a pin I48 will be forced by the spring I49 into the alignment of notches, thus moving the pin closer to the center of the code disc selector mechanism than is normal. When the discs are reset to establish a different alignment of notches, the

previously selected pin is cammed out by the v notches and the new pin drops into the new selective alignment. The type wheel shaft I21 has secured thereto a stop arm I82 positioned below the upper ends of the pins I48. The length of the arm is such that it will pass unselected pins but will be stopped by a selected pin due to placement of the pin closer to the center of the code disc mechanism. Accordingly, the selecticn'of various pins causes the arm I62 to stop in corresponding selected positions, de-

The magnets'f I5I are supported upon the frame of the printer in any convenient manner According to the preferred embodiment of the inventionthe type wheels I42 have not more than twelve selective stop positions, for which four code discs I41 afford adequate selective combinations. Thus, only four selecting magnets are required to control the four code discs and the four left-hand magnets have been assigned to this function, the fifth or extreme right-hand magnet performing a special function to be described later.

Each yokeis provided with a pivoted armature I53 to which is pivotally' connected at I54 the pull link I55. Carried upon, a common pivot I55 which is pivotally articulated to its individual pulllink I55.

affixed to the framework of the .printer. Longitudinal Or endwise movement of links I55 leftwardly, as viewed in Fig.1, imparts a clockwise rotation to the levers I51 and thereby shift the code disc I41'counterclockwise against the temsion of springs I58, this position of the discs being the, selective marking position corresponding to the energization of the magnets .I5I'.-

Upon de-energization of the magnets III, the re- 2 The intermediate arm of each T-lever' I51 terminates in a rounded head dlspending upon the code received, each code being identified with a particular type wheel angular position.

As previously set forth, a power driven shaft which selects the tapes'upon which printing is to be effected is identified by the reference numeral I29. Shaft I29 is located behind the shaft I21 and extends through a stationarily mounted code disc selector mechanism 222 which is similar to the code disc selector I43 previously described except that it has niore stop pins I48 since a stop pin is' required for each of the tapes and in the preferred embodiment of the invention thirty tapes are provided.

. Whereas four code discs were sufiicient to se lect individually the twelve stop pins associated with type wheel selector mechanism I43, five code discs arrequired in the tape selecting code disc mechanism 222 whereby a maximum of thirty-two selective possibilities is available.

Accordingly, five selecting magnets are required and these magnets, identified by the reference numeral I5I' are operatively coupled to the code discs I41 in the same mannei'as are the character selecting magnets I5I connected to the code discs I41. The stop arm I82 is secured to shaft I29 within the circle defined by the upper ends of'stop pins I48, whereby it may be arrested, and with it shaft I29, by any one of the pins I48 which may be selected.

Fixed upon the upper part of shaft I29 are thirty interference fingers 223, of which but two are shown in Fig. 1 and each of which is carried by a collar 224 provided with a set screw for securing the collar to shaft I29 in the desired angular position. Collars 224are clamped to shaft I29 so. as to providea spiral arrangement of the fingers 223, the spacing of which along shaft I29 Y corresponds to the spacing of type wheels I42 on shaft I21 and the angular positions of which correspond to the angular disposition of the pins I48, there being a finger 223 individual to each of the pins I48. The fingers 223 need not D8065? sarily/be arranged spirally, the only requisite being that no two fingers 223 shall have the same angular position with respect to shaft I29. Thus, for each selective position of the stop arm I62 a finger 223 corresponding to one of the tapes is brought into a predetermined angular position with respect to code disc selector 222, the effective stop positions of all of the interference fingers 223 being the same although the stop posibecome operatively effective as the printing mechanism is actuated, as will be later set forth, the selection of the particular eilective finger being determined by the selection set upon,'on the code discs I41.

Disposed between the shafts I21 and I29 is the printing shaft I28 normally held from rotation but adapted to be rotated by means of the friction clutch I32 and gears I 22 and I25. In substantially horizontal alignment with and individlial to each finger 223 is a printing cam 225, all of the thirty cams 225 being aflixed in the same angular position upon the shaft I28.

Disposed toward the lower end of shaft I28 and fixed thereto is a stop disc 226 and selector looking cam 221. Pivoted upon the frame of the printer at 238, and in operative alignment with a notch in the periphery of disc 226, is a stop latch 228, the right-hand arm of which is hookshaped for latching, and the left-hand arm of which is bent downwardly in an extension 229 adapted to span all of the leftwardly extending pointed projections 233 of the selector magnet links I55. The downwardly extending arm 229 of lever 228 is disposed in the path of the lefthand edges of allof the projections 233, so that upon leftward movement of any of the links I55, due to energization of its magnet I5I, lever 226 will be rocked in clockwise direction and its latching end will be withdrawn from engagement w th stop disc 226 whereby shaft I28 will be permitted to rotate in counterclockwise direction. Upon the' return of all of the operated links I55 to normal position, spring 234 which biases lever 226 m counterclockwise direction will cause the lever to return to engagement with stop disc 226 and when the disc has completed one revolution, 1t W111 be brought to rest and with it shaft I28.

Pivoted upon the frame of the printer at 235 Lever 236 is biased in is a locking lever 236. counterclockwise direction by tension spring 239 and carries atits right-hand end a follower roller 231. which is maintained in engagement with the contour of the locking cam 221 by the spring. At its left-hand end, lever 236 is provided with a downwardly extending arm 238 which-has a knife edge adapted to engage on one side or the other, all .of the'projections 233 of selector magnet links I55. When links I55 are in normal or extreme right-hand position, the pointed ends of their extensions 233 are disposed to the right of the knife edged arm 238 carried by lever 236. Upon movement of one or more links I55 to extreme left-hand position, the pointed ends of their projections 233 are moved to the left of-the knife edge. When shaft I28 is at rest, spring 239 holds the knife edged arm 238 of lever 236 .out of the path of the pointed ends of links L55, so that they are free to be moved by the magnets I5I, but when shaft I28 is released 'for rotation, cam 221 rocks lever 236 clockwise,

only long enough for shaft I28 to be set in rota- I tion and links I to be locked.

In operative relation with the type wheels 542 are individual platens 242, each of which is provided with a curved working face corresponding with the contour of the type wheel. The platens are yieldably mounted upon studs carried by the printing hammers 243 and are normally maintained at a predetermined distance from the printer hammers by compression springs 24I (see Fig. 2). The amount of freedom afforded platens 242 is only sufiicient to permit the platens to align themselves against the type wheels to obtain clear printing. The springs assist this alignment and also absorb the excess printing forces, thereby minimizing the wear upon the type wheels. The platen may be made of somewhat eaastic material, such as any of the wellknown phenolic condensation resins, for example, or it may be faced, upon its working side, with a lamina of rubber.' Both; types of structure have been found satisfactory in use.

Each printing hammer 243 is in the form of a bell crank and is pivotally supported at 262 upon the framework of the printer. The lefthand arm supports the platen 242 and the righthand arm is engaged by an operating lever 265. A tension spring 263, connected to print hammer 243, biases the hammer in counterclockwise direction, whereby platen 242 is normally retracted from the type wheel.

A vertically disposed fixed rod 264 has journaled thereon, by means of collars, the print hammer operating arms 265, there being an arm individual'to each hammer. The arms 265 terminate with blunt extremities for engagement with the rightwardly extending arms of printing hammers 243. Eacharm 265 is biased'in clockwise direction, which is the restorational direction, by a tension spring 266. Each of the arms 265 carries intermediate its ends a pivot pin 261 upon which is pivoted an interference lever 268 which is U shaped, having one leg 269 adapted to engage the associated printing interference finger 223 when the latter has been brought into effective position, and having the other leg provided with a roller 212 engageable by its associated printing cam 225. A tension spring 213 with its cam 225, and also to hold leg, 269 of U shaped lever 268 clear of interference finger 223, to permit shaft I29 to rotate.

In addition to the printing cams 225, shaft l28 carries at its upper end a type wheel correctorand locking cam 211. In horizontal alignment with cam 211, type wheel shaft I21 has secured thereto a toothed correcting wheel 214. A stud shaft 216 pivotally supports a lever 215, the right-hand end of which, as viewed in Fig. 1, is provided with a cam follower roller and the left-hand end of which is provided with a pawl hook. A spring .218 biases lever 215 in counterclockwise direction to maintain the cam roller in engagement Two operations controlled by shaft I28 almost immediately after the shaft begins to rowith cam 211 and to withdraw the pawl hook- .from the path of the teeth of correcting wheel The printing-shaft I28 is provided at its lower end with acam 282 which controls the opening,

and closing of a pair of contact 219, which are included in one side of the circu ts to. all of the selector magnets II for timing the operation, of those magnets. a

As previously'set forth, shaft I29 determines the tape upon which a quotation is to be printed,

- before the operation of printing cam followers shaft I21 determines the character to be printed and shaft I28 operates the selected print hammer. In detail, the code pertaining individually to the tape to beprinted is set up in the magnets I5I' by control fully disclosed in the application of which-this application is a continuation in part. This code is set up in the form of current through certain of the magnets of the' set I 6|, leaving other magnets de-energized, and corresponding discs I41 in the selector 222 are oper- 212, finds the selected stop position and isbrought to rest. Shortly before the printing cam -followers are'operated, spring 218 restores correcting lever 215 to extreme clockwise'position,

this operation'occurring after shaft I21 has come to rest in a selected position. The pawl hook of correcting lever 215 is thus brought into therecess ahead of the tooth of corrector wheel 214 ated, camming out all index pins I48 except the one corresponding to the combination of selector magnets I5I' energized. The shaft I29 is thus released for rotation and rotates until the stop arm I62 engages the newly selected) pin I48,

the shaft I29 then stopping with the interference which pertains to the character selected for printing. The locking bell crank 236 is now restored to nor a1 position (extreme counterclockwise) to un tch selector bars I55, and contact 219 may be permittedto close, these operations pin 223 corresponding to the selected stop pin in position to interfere with the printing lever "268 pertaining to the tape upon which the quotation is to be printed. The selected magnets I5! are maintained energized by external control throughout the period of printing upon the selected tape. l

After the tape selection has been established in selector mechanism 222, the code combination for the first of the characters to be printed is setup in the left-hand four of the five magnets I5I, the current for the magnets being supplied simultaneously, if more thanorie. magnet is to be energized, through the contacts 219 which, in the rest position of shaft" I28, are

closed. The links I55, associated with th'e energized magnets, are shifted to the left, thus rocking printing shaft stop lever 228 in clockwise direction, which releases shaft I28 forrotation, the direction of rotation being counterclockwise.-

As the links I55 are moved to the left, the code discs in selector mechanism I42 are set according to the code combination representing the character to be printed; the previouslyseleeted stop pin I48 is cammed to unselected position and a newstop pin is selected. Shaft I21 is not permitted to rotate immediately, however, as corrector lever 215 is held in extreme clockwise position by engagement 0 its follower roller with the high portion of. cam 211, whereby the pawl hook of lever 215 holds corrector wheel 214 and therefore shaft I 21 momentarily. a

occur tate. One of these operations is the clockwise rocking of'locking lever 236 by cam 221 to lock those of the selector-magnet links I55, which have been moved to the left} in their selected position. The other operationisthecounterclockwise rocking of corrector lever 215 by "its spring 218, due torotation of the high portion of .cam 21! out of engagement with the follower on lever 215. Thus, the pawl hook of corrector 1ever'215 is withdrawn from corrector wheel 214 which is released for rotation and shaft I21 with it. The type wheels I42 are thus released 'for rotation and-they continue to rotate until arrested in the new selective position under the being performed by cams 221 and 282 respectively, to prepare the selector mechanism to respond to the next character selection. The unlatching of selector bars I55 permits them to be drawn to extreme right-hand position by springs I58, whereby the setting of code discs I41 is changed and the pin I48 which had arrested shaft I21 is withdrawn. The shaft is thus permitted to respond to its driving torque and'may rotate through the small angle by which the-pawl hook of correcting lever 215 was ahead of the .selected t'ooth, the shaft being rearrested by engagement of the tooth with the hook, this small angular movement constituting the correction.

Near the end of the printing shaft rotation, the

cams 225 sharply rock all of the U shaped levers 268 in counterclockwise. direction about their pivots 261. However, one of the levers 268 will find a finger 223 juxtaposition with its righthand leg 269 and hence further rotation of this particular lever 268 about its pivot 261 will be arrested. The interference pm 223 by which it is blocked will become its fulcrum instead of its pivot 261, and further movement of lever 268 will impart counterclockwise rotation to arm 265 about fixed shaft 264, which motion is communicated to the associated printing hammer 243 to rock said hammer clockwise to carry the platen thereon against the type character.

A sharp hammer blow is imparted for printing, resulting in a well-defined impression. This result is obtained owing to' the fact that the counterclockwise motion of the arm 265 is ve y rapid and .thehammer 243 is thrown against the typewheel as soon as the/arm 265 reaches the} limit of its outward motion. Upon striking the type wheel to make the impression, the hammer rebounds and is instantly away from the tape independently of the length of time arm 265 is held in its extreme position. In its extremeposition,

arm 265 holds the platen near the tape but notv against the tape, the actual printing occurring because of overtravel of the printing hammer 243 due to its inertia.

It will be apparent that all ofthe U shaped levers .268'are operated simultaneously by their cams 225. All but one .of the levers268 will find no interference pin 223 blocking its "rotation about its pivot 261. Accordingly, all of the U- shaped levers 268', except one, will rock idly about their respectivefpivots 261 and will not impart any movement to the arms 265 by which they are individually supported. It follows'that only one of the printing hammers 243 will be operated.

In the foregoing description of the operation of the printing mechanism, no mention was made of the method for supplying ink for making a printing impression. The ink ribbon mechanism will now be described.

Afiixed near the upper end of continuously rotating shaft 3l6, which is driven by a gear 3I9 meshing with a gear 3| 8 fixed to shaft H3, is a worm 342 in mesh with gear 343 keyed to ribbon driving shaft 344 joumaled in the framework of the printer. The opposite end of the shaft 344 is splined and is provided with a ribbon driving spool 345 rotatable therewith and slidable thereupon. The worm 342 and gear 343 are proportioned to impart an extremely slow linear feed to the ribbons. Hence, with the sharp printing blow effected, no smudging of the impression results despite the fact that the ribbons move continuously. Ribbon spool 345 is part of the carriage 346 transversely slidable with said spool upon shaft 344 and upon fixed guide rod 341.

The spool 345 is provided with flanges for guiddownwardly moving portions f:the loopare in close proximity to permit the ribbon to move in the narrow space between the platens and the tapes. In normal operation, a particular ribbon 348, probably black, is in line for printing. However, mechanism is provided to shift the other ribbon which may, for example be red, into the printing position and the black ribbon out of printing position and vice versa.

Below the lowest type wheel, a second shiftable carriage 352 is provided, similar to the upper ribbon carriage but having a ribbonroller 353, serving merely as an idler. Carriage 352 is provided with idlers 343' identical in function with the idlers 349 above-described. Carriage 352 is shiftable transversely upon guide rods 341 and 341" by means to be described later.

Carriage 352 is provided-with ink wells 354 and 354' containing supplies of ink, such as black and red ink, for the two ribbons, Wicks 355, wiping against ribbons 348 and 348' c vey ink to the ribbons.

To compensate for stretching or slack in the ribbon, there are provided tension rollers 356 carried by yieldable arms pivoted'on the carriage 346 and over which a loop of the ribbon passes.

tioned previously, may be'employed for indicating new high or low quotations, black being used to indicate one of those conditions and red the other. Accordingly, there is provided a fifth selecting magnet 362 adapted to operate its armature363 in response to a signaling current accompanying the code combination for the characters to be printed in red. Carried upon shaft M6 and adapted to be driven by friction clutch 364 isa sleeve member 365 comprising a stop disc 366 and a cam 361, the sleeve, cam,

and disc being secured together for rotation as one element. Sleeve member 365 is normally restrained from rotation by the engagement of a projecting finger 368 of armature 363 with a notch in disc 366. The uppermost of the springs I58 serves to retract armature 363 and maintain its projecting finger in engagement with stop disc 366.

A ribbon shift controlling lever 313 is pivoted to the-framework of the printer as at 312. Lever 313 carries at one end a roller which engages cam 361 and at the other end' the lever is bifurcated to engage a pin 315 carried by an arm In the present embodiment of the invention, the movable printing platens 242 carry the ribbons 3.48 or 348, and the-tapeJS'l against the only with the integers figures from 0 to9, inclusive. For those quotations which reduire fractions, which are usually expressed in eighths, the fractions may be represented by the figures 1 to '1, inclusive, printed in red; for example,

7 the integers being printed in black. Also, the

asterisk, the provision of which has been. mensecured to ribbon shift shaft 321. Lever 313 is biased into engagement with cam 361 by tension spring 319. Ribbon shift control shaft 321 is journaled in the framework of the printer and is provided with arms 318 and 318' terminating adjacent to the ribbon shift carriages 346 and 362, respectively. At their free ends, the arms 318 and 313' are connected by pivots to the carriages 346 and 352, respectively, so that when shaft 321 is rocked in clockwise direction, the

black ribbon 348 is moved out of the printing position and the red ribbon 348' is moved into that position. Conversely, when shaft 321 is restored to extreme counterclockwise position, the black ribbon is restored to printing alignment with the platens and type wheels. 'The shaft 321 is normally maintained in the last mentioned position by spring 319 operating through lever 313.

In operation, upon the reception of a code combination including a red inking/ribbon selecting impulse, magnet 362 is energized simultaneously with the character selecting magnets Ill, armature 363 is attracted and its projecting flnger is withdrawn from engagement with stop disc 366, whereby cam 361' is released for a cycle of rotation. As the cam rotates, the follower carried by lever 313 drops into the recess in the cam as spring 319 rocks levers 313 in counterclockwise direction which, in turn, rocks shaft 321 in clockwise direction to shift the ribbon as previously-described. Cam 361 is so shaped and timed that the red ribbon remains in its shifted position long enough for a printing operation to be accomplished with the co-operation of thatribbon, and thereafter, lever 313 is restored to extreme clockwise position by cam 361, thus restoring the ribbons to the normal positions. As cam sleeve 366 completes onecycle of revolution, it cbmes to rest unless the next code combination includes a condition for selecting color printing.

There remains to be described with reference to the embodiment of the invention shown in Fig. 1 the tape supporting and feeding mechanism.' The foundational element of the tape supporting mechanism is -a fixed rod 292 supported in the framework of the printer. and having fixed thereto collars 283 spaced according to the spac ing of the type wheels. A cylindrically bored block 294- is supported upon rod 292 by each of the collars 293 and attached to each block is a light horizontally disposed frame member 236 (Figs. 1 and 2) which support tape spools 236 and 236". Spool 236 supports the supply roll of tape and spool 236' is a take-up spool forjre-q ceiving and storing printed tape. y

Tape 231 is a, narrow paper strip .of width sufficient to record characters carried by the type wheel. The tape, after leaving the supply roll on spool 236 passes over a guiding idler roller 233 rotatably supported upon the framework of the printer and thence aroundthc type wheel I42.

Above each type wheel, a tape spacing disc 303 is sleeved on shaft 121, and fro the uppersurface of the disc, radial lugs 305 project, the number of lugs equaling the number of selective stop positions of the typewheel. 'A similar disc 306 is sleeved on shaft I21 below each type wheel, the disc 306 differing fromdisc 303 in that it does not have lugs projecting from either of its surfaces. The peripheries of discs 303 and 306 are'milled (as a coin). Against theperiphin the form of a bell crank and is pivoted on shaft 262 which supports the printing hammers 243, and is provided with a'hook portion 334 adapted to engage individually the lugs 305 upon the disc 303' for restraining the disc from rotation. Hook 334 of the lever 333 is urged into engagement with lugs 305 by a spring 335.

When a printing arm 265 is oscillated rightwardly, as viewed in Figs. 1 and 2, to effect the printing of a character, the spacing latch 324, which it carries, isalso moved rightwardly and its hook 323 passes across and engages the lug 332 on spacing lever 333. As the printing arm 265 returns to normal position, the latch 324, which it supports, rocks the spacing lever 333 counterclockwise to disengage hook 334 fromg'lug eries of these discs, the tape 231 is held in nonslipping contact by means of two pressure rollers carried upon s pring arms 303 pivoted in the framework of the printer. Discs 303 and 306 are of slightly greater diameter than'the' type wheel so that the tape neither interferes with the trotation of the typewheel nor tends to be advanced by the type wheel as the latter rotates. From the discs 303 and 306 the tape passes be-- tween the platen 242 and the type wheel and thence across the front of the spool supporting frame 295, around a feed. roller 303 joumaled. in the frame 235, and to the take-up spool 236'. The feed roller 303 is faced with gripping material, such as rubber, and a yieldably mounted pressureroller 312 (Fig. 2) presses the tape into engagement with the feed roller 303 and aids the roller in feeding the tape.

Individual to each of the tapes-231 is a grooved pulley 3l5 sleeved upon shaft 3I6 and arranged to receive rotation therefrom through the in-.

strumentality of a friction clutch 311. Similar grooved pulleys 315'. and 3l5" are connected to the tape feed roller 303 and the "take-up reel 236' respectively. A belt 310 passes around the pulleys 3l5, 3l5' and 3|5" for imparting rotation fromshaft 3|6 to tape advancing roller 303 and take-up reel 236. r.

The frame 235 may be swiveled about the rod 232 in a forward direction to make readily ac cessible the tape spools so that a fresh roll of tape may be inserted and the used taperemoved. A catch 322 (Fig; 2) of any preferred form is provided to maintain the frame 235 in. its proper operative position." Shaft 316 is-so located that swiveling of the frame 235 tends to shorten instead of lengthen thecenter distancebetween the pulleys 315 and-3l5' sothat no stretching of the belt 310 results.

Each of the printing arms 265 carries a stud 323 near the free end of the arm, upon-which is pivoted a latch 324. Normally, the latch is in the position shown in Figs. 1 and 2 with a projection 325 thereof abutting a stud 326 fixed to the ribbon shifting control shaft 321, there being a stud 326 individual to each of the tape printing mechanisms. A tension spring 328 is connected between a spring bracket carried by arm 265 and th latch 324 to maintain the latch in abutment wan the pin 326. Latch 324 is provided with a hook portion 323 which is adapted to slide over and latch on the right of a lug 332' carried by a tape spacing lever 333. Spacing lever, 333 is 305 carried by upper tape spacing control disc 303. At all times, the pulley 3I5 is tending, by means of its belted connection with pulley-3l5, to draw the tape to the left, pulley 3l5' supplying a continuous torque to tape pulling roller 303,

but the tape is restrained from movement by its frictional engagementwith the latchedldisc 303, and pulleys 3l5 and 3l5' are stationary. However, as the disc 303 is freed by the operation of lev'er 333, the roller 303 pulls the tape leftwardly, the tape which passes roller 303 being actumulated upon take-up reel 236'. The motion of the tape, is limited to a distance of one character space because latch 324, on its return movement, brings its projection '325 into abutment with the finger 326 and is rocked clockwise about its pivot 323 to release lever 333, which is thereupon returned to normal engagement with the succee ing lug 30 by means of spring 335. The spa ds of operation of the various members are proportioned so that the disc 303 may rotate only the quotation, for the reason that a fraction generally terminates a quotation and the extra space increases the legibility by separating one quota- 4 tion from the next without the actual transmission of a spacing signal.

To thisend, the spacing mechanism is operated in a different manner under the control of the ribbon shift shaft 321. The spacing operation "will proceed as previously described but there will be one condition different from that occurring in the printing of an integer; namely, the shaft'321 will have been rocked in clockwise direction to shift the ribbon characters for fraction colorprinting, and the interference pins ,326, carried by shaft 321, will have been moved out of registry with the arms 325 of latches 324. Upon the return of printing arm 265 to normal position, the lever=333 is rocked counterclockwise to release the disc 303 as before, and tape 231 is free to be moved by roller 303. Latch 324 is then returned to normal position, b i it does not engage its interference pin 326 a d, therefore, the latch 324 is not tripped to release tape spacing lever 333 for engagement with the next lug 305, so that the tape continues to move. However, an instant after the latch has returned to normal position, the shaft 321 is rocked back to normal to return the ribbon carriages to position for the printing of integers and, in so doing, the finger 326 strikes the projection 325. of latch 324, and

rocks the latch todisengage its hook 329 from the lug 332 carried by the spacing lever. The lever 333 is then free to re-engage the second succeeding lug 305 by action of spring 335.

The principle of this modified spacing operation is the delay in the tripping of latch 324 to permit disc 303 to rotate two spaces instead of one,'and the movement of the shaft 321 is so timed as to permit the tape to move two spaces,

but not more than that distance.

If a quotation does not have any fraction, an extra space may be provided by transmitting a signal combination which causes the blank portion of the type wheel to become aligned with the print hammer. mechanisms then operate as if a characterwere being printed, but since the type wheel is not provided with a character no impression will be made upon the tape.

Under certain circumstances, .it may be desirable when using a stock quotation printer, such as that described in the foregoing portions of this specification, to enlarge the printed characters so that they may be readable at a distance greater than the maximum possible with charactors of the ordinary size. 'Accordingly, there is included in this invention a method of projecting the printed characters upon a screen to suitable magnified dimensions. Such an arrangement is shown in Figs. 3 and 4, both of which are in diagrammatic form.

Referring to Fig. 3, the parts of the tape printer of Fig. l are identified by the same reference numerals as before. Only minor structural variations from the previously described printer are required; such as, providing a type wheel with reverse characters and adapted to print characters in inverted position; providing transparent tape instead of the ordinarily-used opaque tape; moving the tape supply and the take-up reels to different locations and supporting them upon different mountings to prevent the projected image from being obscured thereby. In order that the image may be accommodated on the screen, it is found desirable to arrange the tapes in groups, the number of tapes ineach group being governed by the size of the lenses economically usable. Fig. 4 shows the arrangement for groupings of tapes, each group having its own optical system. Since it is desirable to have the projectedltape images move from right to left, as do the tapes when viewed directly, as in Fig. 1, it is necessary to reverse the printing mechanism back to front in order that the projected image shall move in the desired direction, taking into consideration the reversal of the image by the projector.

The optical system is clearly disclosed in Figs. 3 and 4. A source of light 386, one individual to each optical system, is arranged in front of a concave reflector 381, and the light transmitted directly from the lamp 386 and reflected from mirror 38! is transmitted through the condenser lens system 388, through the tape 291 upon which quotations have been printed and through the objective lens system 389. From jected upon the rear of the translucent screen "I where it is visible to the observer from the opposite side thereof.

In Fig. 5, the division of the tapes 291 into groups is shown, each group having its own lamp 386, condensing lens 388, and objective lens system 388, these optical systems being aligned one above the other in registry with the The printing and spacing groups of tapes. A single screen may be provided onto which the images of the groups of with a gear 40'! secured to a combined selector' this point, the image is magnifiedand is protapes are projected, but the groups of tapes should be sufficiently separated that the images of adjacent vertically aligned groups shall not overlap on the screen 39L An alternative embodiment of a multiple tape stock quotation printer is shown in Figs. 5 to 14, inclusive. This printer is also adapted for the projection of enlarged images of the printed tapes upon screens, as shown in Figs. 15 to 18, inclusive. Referring to Figs. 5, 6, and 7, the reference numeral 4! .designates a motor, the rotor shaft 402 of which carries a pinion 403. Pinion 403' has directvdriving engagement with a gear 404 secured'to type wheel shaft 406 and and printing shaft 468. Shafts 406 and 408 are rotatably supported by stationary frame portions of the printer. Gear 401- has secured thereto a gear 409 with which meshes a gear 4 carried by a transfer shaft 4l2 .rotatably supported in brackets M3. The arrangement of shafts and gears is similar to that disclosed in copending application Serial No. 193,642, filed March 3, 1938, by Albert H. Reiber.

Shaft 408 has sleeved thereon at its upper end a selector cam sleeve 4| 6 to which rotation is imparted from shaft 408 by means of cooperating driving and driven discs at the end of sleeve 4l6, felt, or other resilient discs being interposed between the driving and driven discs. Selector cam sleeve 6, in cooperation with selector magnet 4, controls the setting of sword levers in a sword and T-lever selector mechanism indicated generally by the reference numeral 4l8. Selector cam sleeve 6 has a plurality of cam projections 9 (Fig. 5) which individually and successively bring sword levers 42l (Fig. 8) into cooperation with a selector lever 422, the selective positions of which are controlled by an armature lever 423 which carries an armature 424 for the selector magnet 4. The single magnet sword and T-lever selector mechanism is well ,known in the art. f printing telegraphy, and the specific embodiment shown herein is disclosed in the hereinbefore mentioned copending application of Albert H. Reiber, so that it is not considered necessary to describe in detail the operation of such a selector mechanism other than to say that by means of that mechanism, the sword levers-42f are selectively positioned in extreme clockwise or counterclockwise positions and are thereafter moved endwise to establish corresponding selective positions of transfer levers 426 under the control of a transfer mechanism.

The transfer mechanism comprises a bai1,421, Fig. 6, at the upper end of which is secured a bracket 428 which retains a plurality of transfer springs 428. Springs 428 are effective "upon the individual sword levers 42| when bail 421 is operated to move the sword levers to their extreme right-hand positions, as viewed in Fig. 8. Bail 421 has secured thereto an arm 43l which is provided with a locking blade 432 which normally locks projecting ends of transfer levers 426 and which is withdrawn due to clockwise rotation of arm 43l when bail 421 is operated to uzezmit the selective resetting of transfer levers Transfer bail 421 carries a cam follower roller (not shown) which engages a cam 434 secured to a cam sleeve 436, sleeved on the transfer shaft 4| 2. Rotation is' imparted .to cam sleeve .436

operating arm I disposedin the path of a cam projection 442 (Fig. included in selector cam assembly 4| 6. A tension spring 443 biases clutch throwout lever 438 into engagement with clutch 431 and the end of operating arm I in the path of cam projection 442. Upon each operation of clutch tripping bail 439, cam 434 is released for a single revolution and operates its follower which through arms 43I and 421 unlocks transfer levers 426 and repositions them in accordance with a new signal combination under the control of sword levers 42l.

Stock quotation printers are usually operated under the control or a 6-unit code, one impulse of which determines whether figures or letters shall be printed and the remaining five of which select the particular letter or figureto be printed. In conformity with this practice, the printer now being described is provided with five of the transfer levers 426, each of which has disc and slot articulation with an intermediate three-armed lever 443 (Fig. 8) of which there are five disposed one above the other upon pivot 444. Each 01' the intermediate three-armed levers 443 has one of its arms disposed in a slotin a code disc 446, of which there are five permutation code discs (Fig. 7) and a special blocking disc 441 (Fig. 8) included in a code disc selector mechanism indicated generally by the reference numeral 448 (Figs. '1 and 8). The third arm of each of the three-armed intermediate levers 443 terminates in a disc portion which is disposed in a slot near the end oi a code bar 449 of which there are five (Figs. 5 to 8,.inclusive). Pivot 444 also supports a lever 45l which is operatively in engagement with special blocking disc 441. The Iunctionand controloi lever 45! will be described later. I

It will be apparent from the foregoing that when transfer levers 426 are set permutatively according to a new signal combination the intermediate levers 443 will be actuated correspondingly to impart corresponding settings to the five it code discs 446 and to the five code bars 449.

The sword lever selector mechanism M8 includes the five sword levers 42l which control the setting of the-five transfer levers 426, and a sixth sword lever which is controlled according to that impulse of the code combination which identifies the code combination as pertaining to letters or figures. The sixth sword lever is aligned with and controls a T-shaped lever 452 which is pivoted coaxially with the transfer levers 426. The T-shaped lever 452 has its principal arm 453 disposed between pins 454 and 456 carried by lever 451 and bell crank 458 respectively. Lever 451 is pivoted at 469 and carries at its free end a pawl 459 which is biased counterclockwise, as viewed in Fig. 8, by a spring 46l,

a position intermediate the positions to which it may be rocked by its associatedsword lever 42!. The rocking of T-shaped lever 452 to either of its extreme positions is effected by the transfer bail 421 which moves sword levers 42l endwise rightwardly, as viewed in Fig, 8, and thus The relation of T-lever 452 to incoming signal combinations is such that when the combination pertains to the letters of a stock quotation designatio'n, T-shaped lever 452 is rocked in clockwise direction and, in turn, rocks pawl supporting lever 451 counterclockwise to effect counterclockwise rotation oi rock shaft 463 oneratchet step. A holding pawl 464 is urged into engagement with ratchet 462 by a spring (not shown) to hold ratchet wheel 462 in its normal position or in any advanced position to which it may be rotated by pawl 459.

Shaft 463 is biased in clockwise direction, as viewed'in Fig. 8, by means of a torsion spring 466 (Fig. 7) and is provided at its lower end with cams 461, 468, and 469 and with a stop disc "I. Stop disc "I is provided with a shoulder which is engageable with a fixed bracket 412 oi! the frame of the machine to arrest shaft 463 when ratchet wheel 462 is engaged by neither of the pawls 459 and 464 to determine the rest position thereof.

Cams 461 to 469, inclusive, are provided for controlling the setting of three sets of storage code bars according to permutational settings of the 'code bars 449. As shown in Figs. 5,-7, and

urging the arm into engagement with a stop' 10, a series of endwise movable bars 413, 414, and 416 is disposed adjacent to the cams 461 to 469, inclusive. Bars .413, 414, and 416 are disposed one above the other corresponding to the spacing of cams 461 to 469, inclusive, and each of the bars pivotally supports an interponent lever 411, 419, and 419, respectively, which levers are aligned horizontally .with cams 461, 468, and 469 respectively and are urged into engagement with the cams by springs, such as 48! (Figs. 5 and 10). Cams 461 to 469, inclusive, are provided with recesses as at 482, 488, and 483, respectively (Figs. 5 and 10) which may be entered by the cam engaging ends of interponent levers 411 to 419 respectively when cams 461 to 469 respectively have been rotated into position to present their recesses. Thegangular disposition oicams 461 to 469, with reference to their individual interponent levers 411 to 419 respectively,

' is such that when shaft 463 is in normal position with theshoulder of stop-disc 41l engaging fixed stop 412, none of the recesses 482, 489, and 483 is presented to an interponent lever. When ratchet 462 has been advanced one step in counterclockwise direction cam 461 is rotated sumlciently'to bring its recess 492 -into alignment with the cam engaging end of its interponent lever 411, which responds to its spring 484 and enters the recess 482, the interponent 411 thus lrotating'in clockwise direction, as viewed in Fig. 5. When ratchet 462 is rotated another step in counterclockwise direction bypawl 459, the recess 482 in cam 461 is moved out of registry with the cam engaging end of interponent 411 and the recess 480 in cam 468 is presented to the cam engaging end of interponent 418. Similarly, when shaft 463 is rotated another ratchet step in counterclockwise direction, interponent 418 is restored to its normal position by the movement of the recess 480 in cam 468 out of registry with the interponent, and recess 483 in cam 469 is presented to the cam engaging end of the lowermost interponent 419.

Adjacent to the left-hand end of the bars 413, 414, and 416, as viewed in Fig. 7, is the depending arm 484 of a bail 486 pivoted at 481. Bail 486 is provided with a cam follower roller 488 which engages a cam 489 included on cam' sleeve 436 carried by transfer shaft 4| 2 and driven by clutch mechanism 431. 486 is rocked counterclockwise, as viewed in Fig. 7, and its depending arm 484 is moved rightwardly a predetermined distance and is then restored to normal position, which is that shown in Fig. '1, by tension spring 49!. Bail arm 484 clears the left-hand ends of bars 413, 414, and 416 as it moves rightwardly, but the left-hand end of any of the interponent levers 411, 418, and 419, which is rocked in clockwise direction due to entrance of its cam follower portion into a recess in its corresponding cams 461, 468, or 469, moves into the path of bail arm 484, and as the arm is moved rightwardly, rightward motion is imparted to the bar 413, 414, or 416 by which such interponent is carried. The right-hand ends of bars 413, 414, and 416 are step out so that they may individually engage depending operating arms of nested bails 492, 493, and 494 respectively pivoted upon shaft 496.

Previous reference has been made to sets of storage code bars. There are three such sets, the first set being designated 50!, the second 502,

and the third 503. Storage code bars 50!, 502,

and 503 are individually supported near their lower ends by being provided with two pins 504 and 506, Fig. 7, between which extend horizontal arms of transfer bell cranks 501, there being a transfer bell crank individual to each of the storage code bars. As the storage code bars are arranged in sets, so also are the transfer bell cranks 501, those individual to the code bars 50! being pivotally supported as at 508 in a transfer bail 509, those individual to code bars 502 being pivoted at 5! in a transfer bail 5!2 and those individual to the code bars 503 being pivoted at 5!3 in a transfer bail 5l4. Bails 509, 5|2, and 5 are pivoted upon pivot rod 5l6, and each has a depending operating arm, the arms being designated 5", 5!8, and 5|9 for the balls 509, 5l2, and5l4'respectively. Adjacent to thelower ends of the bail arms 5l1, 5I8, and 5!9,bails 492, 493, and 494 are provided with laterally extending projections 52!, 522, and 523 respectively in the operative path of which the lower ends of bail arms 5", 5l8, and 5I9 are disposed. As viewed in Fig. 7 upon the rightward reciprocation of any of the bars 413, 414, and 416, its corresponding bail 492, 493, or 494 will be rocked counterclockwise and will, in turn, impart counterclockwise rocking movement to the corresponding bail 509, 5! 2, or 5|4 through its dependingarm 5!1, 5l8, or 5!9 respectively.

Storage code bars 50!, 502, and 503 are individually urged downwardly by means of tension springs 524 (Fig. 7) to seek engagement with a stop rail 526. These bars are movable under the control of transfer bell cranks 501, as will When cam 489 is rotated, bailpresently be described, from their lowermost positions engaging the stop rail 526, which is one of their selective positions, to an upper and therefore alternative selective position, in which position they are held by individual latches 521 pivoted on a pivot rod 528 and biased in clockwise direction, as' viewed in Fig. '1, by individual tension springs 529. The clockwise movement of latches 521 when their individual bars 50!, 502, and 503 have been lifted free of those latches is limited by a bail 53! which is also pivoted upon rod 528 and which spans all of the latches 521.

When any of the bars 50!, 502, and 503 is lifted to its upper selective position, it rests upon its associated latch 521, which has been moved in clockwise direction by its spring 529 and which remains in that position until retracted to permit the storage code bars 50!, 502, and 503 to return to normal position.

The retraction of latches 521 is accomplished by bail 53! which has at its left-hand end, as viewed in Fig. 5, a depending arm 532 which terminates close to the upper surface of reciprocable bar 413. Bail 53! is biased clockwise by tension spring 533 (Fig. 7) to engage, in the normal condition, a fixed stop 534. Reciprocable bar 413 has pivoted upon the upper surface thereof as at 536 (Figs. 5 and 7) a trip-off lever 531 which consists of two arms, one extending along bar 413 and terminating adjacent the lower end of latch tripping bail arm 532 which is disposed in its path, and the other extending transversed from bar 413 and having in its path a fixed pin 538 (Fig. 5). A spring I531, Fig. 10, maintains lever 531 in its extreme clockwise position resting against a stop lug integrally formed with the bar 413. Upon rightward reciprocation of bar 413, as viewed in Fig. 7, the end of the arm of trip-off lever 531 which extends along bar 413 engages latch restoring bail arm 532 and rocks the bail counterclockwise to withdraw. latches 521 from supporting engagement with any of the storage code bars 50!, 502, or 503, that may be in their uppermost selective position. As trip-off lever 531 continues to be carried rightwardly by bar 413, its laterally extending arm engages pin 538 and the trip-01f lever is rocked counterclockwise, as viewed in Fig. 5. The counterclockwise rocking of trip-off lever 531 causes it to be withdrawn from engagement with the lower end of latch restoring bail arm 532, and spring 533 restores bail 53! to extreme clockwise position, as viewed in Fig. 7, in engagement with stop 534. Upon retraction of bar 413 to normal position, the trip-off lever 531, after being withdrawn from engagement with bail arm 532, returns to extreme clockwise position, as viewed in Fig. 5, in readiness to rockunlatching bail 53! upon the next operation of reciprocable bar 413.

As shown in Figs. 8 and 11, each of the bars 449 is provided with three lugs projecting from the rear edge thereof, the lugs on a bar being spaced and arranged to block simultaneously or to unblock a corresponding one of the transfer bell cranks 501 in each set 50!, 502, or 503. Thus, the uppermost of the bars 449 has projections 54! which will block the first transfer bell crank in each group, counting from the left, as viewed in Fig. 8, and these lugs will be moved out of blocking relation to the particular bell cranks 501 when the uppermost bar 449 is moved to its other selective position. Similarly, the bar 449 next below the top has three lugs 54! which will block the second transfer bell crank 501 in each group counting from. the left when the bar is in one selective position and which will not be in the path of those bell cranks when the bar .is moved to its other selective position. Fig. 11

shows in detail the relation of the lugs 541 to one set of transfer bell cranks 501. It should be noted that none of the lugs 541 carried by the bars 449 can block one transfer bell crank 501 when in one selective position and another of the bell cranks when in another selective position. The movement of bars 449 from one to another of their selective positions is sufllcient only to move its lugs into or out of locking relation with respect to particular transfer bell cranks.

It will be apparent that when latches 521 are withdrawn to their extreme counterclockwise positions, as viewed in Fig. -7, and all of the storage bars 501, 502, and 503 are permitted to rest upon the fixed stop 526, the transfer bell cranks 501 associated with those of the bars 501, 502, and 503 that had been previously elevated will be rocked in counterclockwise direction. Stop 526 is so positioned that the upwardly extending arms of transfer bell cranks 601 cannot thereby rock into engagement with the lugs 541 carried by bars 449, and thus there will be no interference with the setting of these bars by the threearmed intermediate levers 443. As the reciprocable bar 413 moves to its extreme rightward position (Fig. 7), it rocks transfer bail 509 to extreme counterclockwise position, thus carrying the five transfer bell cranks 501ysupported thereby to the left. Those of the transfer bell cranks 501 carried by bail 509 that do not encounter lugs 541 are merely moved leftwardly idly, their horizontally extending arms moving between the pins 504 and 506 of storage bars 501 without in any way affecting the storage bars- However, those that encounter lugs 541 have their upwardly extending arms arrested by the lugs and as bail 509 continues to rock in counterclockwise direction, the blocked transfer levers 501 are rocked in clockwise direction to lift their associated storage bars 501 against the tendencies of their individual springs 524. The bars that are lifted, clear their latches 521 which respond to their springs 529 and move into position to support the lifted storage bars. In this manner, the storage bars 501 are set in positions corresponding to the selective positions of the bars 449.

Storage bars 502 and 503 may be set according to the next two signal combinations in the same manner, the setting of the bars being accomplished by reciprocable bars 414 and 416 under the control of cams 468 and 469. In this manner, there may be stored in the storage bars 501, 502,

and 503, code combinations representing three plication Serial No. 333,161, filed January 17,

1929, by L. M. Potts. Referring now particularly to Fig, 7, it will be observed that the bar, 501 seen in elevation is provided with a uniform distribution of notches and lugs. The space occupied by one lug and an adjacent notch corresponds to that required to any one of the plurality of tapes upon which printing is to be effected. In this space is accommodated one of the selectable slide bars 551, there being one such bar for each tape upon which characters are to be printed. All of the bars 501, 502, and 503 are identical with the bar 501 shown in elevation in Fig. '7 in that they are provided with a uniform distribution of notches and lugs. Thus, there is no permutational or other coding inherent in the notching of the several bars 501, 502, and 503. Slide bars 551 are shown in their extreme right-hand positionin Fig. 8, and these bars are slidable leftwardly under circumstances about to be described, the leftward movement being imparted by tension springs 552 individual to each bar 551. Each of the bars 551 is provided with three sets of notches, each set consisting of five notches. The slide bars 551 are so positioned with reference to storage bars 501, 502, and 503 that the front edges of the storage bars are disposed in the notches in bars .551, the front edges of the storage bars being the edges provided with the uniform distribution of notches and lugs.

There are thus provided upon bars 551 a plurality of lugs or ears 553. With reference to any of the storage bars 501, 502, and 503, the lugs 553 disposed at the right of individual storage bars, as viewed in Fig. 8, are the ones which may prevent leftward movement of a slide bar 551.

As shown in Fig. '7, the lugs 553 of slide bars 551 are bent upwardly or downwardly according to a permutation code system whereby a bar 501, 502 or 503 may have certain of its lugs interposed in the path of lugs 553 of certain of the slide bars 551 .when the storage bar is in its upper selective position and may have others of its lugs interposed in the path of lugs 53 carried bythe remainder of the slide bars 551 when the storage bar is in its lower selective position. From this, it will be apparent that for ,a given permutational setting of the storage bars 501, 502, and 503 in upper and lower selective :positions one. and according to the preferred embodiment of the invention only one, of the slide bars 551 will have all of its lugs 553 in alignment with notches in the storage bars whereby the slide bar will have been selected and will be free to-move leftwardly, as viewed in "Fig. 8. With .a different permutational setting ofthe storage bars'501, 502, and 503, another one or none of the slide bars 551 may be selected for leftward movement. v

As is well known in printing telegraph systems operable in accordance with permutation codes, five selecting bars will afford thirty-two usable selective possibilities. This is true of anyof the sets of five storage bars 501, 502 and 503. With three such sets jointly controlling the slide bars 551, the number of selective possibilities isvery much higher than can possibly be employed in a single printer. This arrangement will permit the coding of the slide bars 551 according to the actual letters of the stock designation. Thus, the bars 501 may beset according. to the code combination for the first letter of the stock, bars 502 maybe set in accordance with the code combination for the second letter of the stock, and bars 503 may be set accordingto the combination of the third letter of the stock desig nation. Some stock designations are customar-,

the storage bars 501 or 502 and 503, and those bars will remain in their lowermost positions. For such stocks, the slide bars 50! will necessarily be coded to be selectable when the storage bars 502 and 503 are in their lowermost positions and such slide bars will be blocked when a storage bar from a set for which the stock designation has no identifying letter is raised to the upper selected position. For settings of the storage bars corresponding to designations of stocks other than those for which tapes have been provided in a particular printer, no slide bar 55! will be coded to be selected, and as the printing of a stock price occurs only as a consequence of selection of a slide bar 55!, the unwanted quotation will be rejected, as will presently appear.

At the left of each of the slide bars 55!, as viewed in Fig. 8, is a combination print hammer and tape feeding control slide 555 and a pivoted latch 551. Each print hammer slide 555 is provided with 'a notch 555 to be engaged by the latch 551. Print hammer slides 555 are urged leftwardly by springs 559 and are restored to their extreme right-hand position by a bail 55! which is engageablewith a hooked arm 552 carried by each of the slides 555. and is biased to seek engagement with the hooked arms 552 by a spring 555 which is very light as compared with the springs 559.

As may be observed by reference to Figs. to 8, inclusive, ball. 55! extends transversely of all of the print hammer slide restoring arms 552 and is pivoted at 453. Clockwise rocking movement is imparted to bail 55! to efiect the restoration of slides 555 to their extreme righthand positions, as viewed in Fig. 8, -by a bail 554 pivoted at 555 and connected to bail 55!"by, means of a link 551, the connection between bail 55! and link 551 being a pin 558 and slot 559, as shown in Figs. 5 and 8. Counterclockwise movement is imparted to ball 55! by the individual print hammer slides 555' which are moved leftwardly by their springs 559.

The lowermost end ofbail 554 is disposed adjacent to the right-hand'edge of the uppermost reciprocable bar 413 and the bail is provided with a roller 51! in the horizontal plane of the reciprocable bar 413. As shown in Fig. 10, bar 413 has a portion atits left-hand end of greater width than the main'body portion of the bar,

and when the bar is in its normal or unoperated position, roller 51! engages the edge of bar 413 in the main body or narrow portion thereof. When bar 413 is reciprocated rightwardly, as

viewed in Fig. '1, in the manner previously described, roller 51! rides up the slope between the narrow and the wide portions of bar 413 whereby clockwise movement is imparted to bail 554 and through link 551 to bail 55!, by engagement of the left-hand end of slot 559 with pin 558. This movement of bail 55! by means of said bar 413 thereupon causes the movement of any hammer interponent assembly 555 which had been released, restoring it to its latched position as shown in Fig, 8.

Adjacent to the portion of bail 55! which engages print hammer slide restoring arms 552, the lower arm of the bail pivotally erigages a link- 512 which has intermediate its ends a notch 513.

A latch 514 pivoted at 455 and biased in clockwisedirection by a tension spring 515 enters notch 513 in link 512 when bail 55! has been rocked to extreme clockwise position and retains the bail in that position. The slides 555 are held in'their between link 551 and hail 55! permitting this independent movement.

The release of ball 55! to permit a selected one of the slide bars 55! to trip its associated latch 551 and thereby release its associated print hammer slide 555 for leftward movement, as viewed in Fig. 8, is controlled by the previously identified T-lever 452. Upon the reception of a code combination which contains an impulse to control the printing of figures, T-lever 452 is rocked counterclockwise, as viewed in Fig. 8, and' through pin 455 it rocks bell crank 458 clockwise. Bell crank 458 has an arm 515, the free end of which is disposed in a slot in disc 511 which is sleeved on shaft 453 below ratchet 452. Disc 511 supports upstanding pins 518, one of which is adjacent to pawl 459 and the other of which is disposed adjacent to holding pawl 454 and to an arm of a bell crank 519 disposed above and extending parallel to holding pawl 454, the bell crank 519 and pawl 454 both being pivoted at 450. When bell crank 458 is rocked clockwise by T-lever 452, disc 511 is rotated counterclockwise a sufiicient distance to cause pins 515 to withdraw operating pawl 459 and check pawl 454 from engagement with ratchet 452. Bell crank 519 is rocked counterclockwise through the same angular distance as is pawl 454. Upon the release of the pawls 459 and 454, spring 455, Fig. '7, restores shaft 453 to normal position with the shoulder on stop disc .41! engaging fixed stop Bell crank 519 has an arm 58! which carries a pin 582 disposed adjacent to the end of latch 514 which holds ball 55! in extreme clockwise position. Pin 552 also engages one arm of a bell crank 583 which is pivotally supported upon an arm !583 of shaft M1 in association with a printing bail 584, the structure and operation of which will be described later. The free end of the other arm of bell crank 553 is provided with a latching shoulder which engages an ex-.

tension 585 of the leved which controls special blocking 'code disc 441, and the latching shoulder normallyholds the lever 45! in extreme counterclockwise position whereby disc 441 is normally presented in extreme clockwise position. Latching bell crank 583 is disengaged from the extension 585 of disc controlling lever 45! by pin 582 as hell crank 519 is rocked counterclockvwise, but lever 45! is'not thereby released for the reason that it is held by a second latch 585 pivoted at a fixed point 551. At its foremost end, as viewed in Fig. 8, latch 585 carries a pin 588 which is disposed in a slot 589 irithe left-hand end of link 512. Since link 512 is moved leftwardly with ball when the latter is moved counterclockwise by a selected and released print hammer slide 555 upon the release of latch 514 it moves idly with respect to pin 588 carried by latch 585 until the right-hand end of slot 589 engages the pin 588. Further leftward move- ;ment of link 512 causes latch 585 to be withextreme right-hand positions, as viewed in Fig. 8, drawn from engagement with lever 45! which,

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