US1532721A - Typewriting machine - Google Patents

Description

April 7, 1925.

B. C. STICKNEY TYPEWRITING MACHINE Filed Jan. 20, 1922 4 Sheets-Sheet 1 April 7, 1925. 1,532,721

B.C.ST|CKNEYV TYPEWRITING MACHINE Filed Jan. 20, 1922 4 Sheets-Sheet 2 B. C. STICKNEY TYPEWRITI NG MACHI NE Filed Jan: 20,. 19.22. 4 Sheets-Sheet 4 vices upon which the platen frame swings are modiiied so as to be capable of giving it triple the -usual range of movement; and the same is true of the swinging shift-rail frame which shifts said platen frame; said shift-rail frame being operable by any of the three shift-keys. The ribbon-vibrator is connected to shift with the platen to each of its three abnormal case-shift positions, and to be vibrated to cover and uncover the printing point at the type strokes at each position of the platen.

The invention is not limited to the use of Arabic or other alphabet. Certain features may be used for other purposes, and the shifting mechanism is capable of modilication for such purposes.

Other features and advantages will hereinafter appear.

ln the accompanying drawings,

Figure 1 is a sectional side elevation taken for the most part centrally of the machine from front to rear, and showing the platen in its lowermost or normal position for typing medial letters.

Figure 2 is a diagram showing typeblocks with type-faces thereon, each block having four forms of the same letter. rlhese forms are shown diagrammatically, but it will be understood that in making the actual types the forms are reversed.

Figure 3 is a sectional elevation of the machine taken in rear of the keyboard and forward of the platen.

Figure 4 is a diagram of a keyboard, showing the Arabic alphabet with only a single character on each key, said key serving throughout all of the four forms of its letter. l

Figure 5 is a sectional elevation corresponding to a portion of Figure 1, butI showing the platen shifted up one step to bring into use the initial types.

Figure 6 is a plan showing the universal bar frame and ribbon-vibrating devices.

Figure 7 is a view similar to Figure 5, but showing the platen shifted up to a third position for printing final characters.

Figure 8 is a view similar to Figure 7, but showing the platen shifted to its topmost position for typing isolated characters.

Type-keys 10 depress levers 11 having pins 12 to engage slots 13 formed in bellcranks 14, toV swing type-bars 15 upwardly Vand rearwardly against a platen 16. rlhe type-bars 15 are pivoted at 17 in an arc below the printing point, the arc being about in a vertical plane, as usual, and have slots 18 engaged by pins 19 in the bell-cranks 14. Upon the type-bars may be carried blocks 20, each having four types 21, 22, 23, 24, of which the lowermost one 21 prints when the platen isin normal position, any of the others being brought into use by appropriately shifting the platen up.

The invention is in the nature of an im-V provement on the standard Underwood typewriting machine, and makes provision for room for the additional types on the type-bars by raising and bringing forward the usual margin-gage rod 25 and front rail 26 at the front of the machine, these being supported upon upward and forward extensions 27 provided upon the front part of the usual framework 28 and carryingy the usual front scale 29. rlhe usual roll 30 runs upon the fro-nt rail 26, this roll being mounted in the front bar 31 of the platen carriage 32, which front bar clears the lengthened type-bars because itis elevated above the remainder of the carriage upon upward and forward extensions 33 provided at the front of said carriage and cast integral therewith; said bar 31 being, however, below the line of vision, so that the typing is visible as it is being written. Thus by simple changes and without objectionable cost the typing capacity of the Underwood machine is doubled, while the appearance of the machine is preserved. y

The usual platen 16 is directly journaled upon a platen frame 34, shiftable upward by means of a swinging shift-rail 35, upon which runs a roll 36 pivoted to bracket 37 depending from the rods 38, 38a forming part of the shift-frame 34, the latter having substantially the usual construction. rlhe shift-frame 34 has at its ends gudgeons 39, which are engaged by arms 4() extending forward from ay rock-shaft 41 pivoted in ears 42 formed upon the main carriage 32, substantially as usual in the Underwood machine. The shift-frame is also guided in its up-and-down movement by a pair of links 43, which are pivoted at 44 to the carriage and at 382L to the shift-frame.

The platen occupies its lowermost position at Figure 1, and is shiftable upwardly thrice the distance usual in 'the Underwood machine. To effect this movement without causing the platen to swing unduly out of a vertical path, the relationship of the pivot points 41 and 39 is changed from the standard construction, by elevating the point 41, so that said points 39 and 41 will be about on a level with each other when the platen has moved half way through its extreme upward throw. For similar reasons the pivot points 38a and 44 have a similar relation. The platen is rotated little or none at the case-shifting operations, and the front or printing line of the platen is caused to travel in an arc which nearly coincides with a vertical line, so that the printing ei'hciency of the types is not impaired, and no great deviation of the types from a straight row on the type-block is necessary; the type-faces on the block lying in approximately a single lane.

rlhe shift-rail is carried upon a pair of vthen'usuel, owing to the necessity oi igssep'e side plates l5 and y60 extend-ing rorwerdly from t rook-shaft lo, jou'rneled in the side posts 47 oit the n'ieehine. "lhese side plates and 60 are approximately of the usuel construction, but this shittreil freine normally stands in e inore depressed position giving the shirt-rail 35 tripletheusuel'throw. The rehxtionship oit the parts 35 end i6 corresponds With th'iit of Vthe pivots 39 and 4l,`

so that the shift-rail 35 moves up nearly in a vertical line.

The shifting of the shift-rail frame, oomprising plates L5 and 60 and rook-shaft d6, iney'he effected by the use of three shittlreys, the first of which is marked d8 and is mount-ed upon a shift-lever 1129, correspondingin shape with the type-liey-levers ll, and having' et its rear end an erin 50 to rook-upon the rear edge 5l ot the lett-hand plete or the shift-rail freine, this operetion being substantially like that which is usuel in the Underwood rnaehine, see Figure 5..

The upward inoveinent ol v the platen freine 3l is ested by e stop 52, arranged upon the Carriage in the path ot a. shoulder provided upon the rsdiitt-i'ruine, Figure it being understood thgit there is e step et veeeh end ot theV carriage freine, and shoulder 53 et each end o1 the plz-,ten rlhe platenV traine normally rests t 5e upon the side hers ot' the carriage ruine 32; the pieter 'trarne having o hentlown eer 5t', whose lower edge rests upon ,he Carriage ber ut each end ofthe oer- "e, es usuel in the Underwood'machine throw of the platen, therefore, is liinite-d downwarlly hy the leer resting upon carriage side-her, und upwardly by the engaging the stop 52. `This r ot the tw lower types on e to he printed. The stop 52 ooselfr mounted, lout there is provided .e carriage e. fixed guide 5G lfor the so that the lutter really serves es between theshoinder 53 lined ,f 'uide 'or stop f' l" oo, figure 5, t hence roof-,irate alignment or the upper end lower ease type-impressions with one another is secured.

`When it is desired to lering into use the third type on each type-her, there is depresset o. key 57 on o lever 58, preferably at the right-hand sideot th nieohine, seid lever lie-Ying at its rear end un upstsnding erin 59 to engage the right-hand side plete 60 (resembling 45) oi' the shift-ruil 't' tune. rlie shiiftino nioifenient ol' the pleiten elle-eted by the lr y is the saine as that efteeted seid lrey d8. ltwill he seen zit Figur i' trut the platen shiitted there tl e F ure 5 position r en 'ugh for the third types 23 to print. The erin 59 may roll upon e flange 6l provided up'onthe plete 'et its upper end, Connects to en GO and flush with the rear edge of the letter. interpellent 52 trein the Vpath 'et the shoulder 53, there is provided upon tlee shiftl-:ey e Aouin 62, which sots uponu pin 623 provided upon a hell-Crunk '64, to swing the lutter and pull down e ylink 65, which, erin 6G, und thereby reeks u shut't -GT extending loetween the posts on the ireineix'orlr-und journeled therein, 2nd haring midway Yhetween its ends 'en erin 68 to lift u transversely-arranged horizontal Win69 jouriuled et T0 upon urine 7l inzending downwardly and rearwardly -rorn the Airont her 3l of the carriage. rlhis Cross-oer or shaft (59 has et its ends erins .72, nested ut 73 Witl stops 52, o slide the letter 'roin their norinel positions at Fig'- ure l forwardly to positions Figure 7, whereby stops are removed from the peth of the'risinfny shoulders 58, and u seeond eeir oi stops brought into play, these stops being toi-'ined es on the stops 52, and the letter being,` gilded on shoulder screws The ouin 6, nitty he prorided With e du" il, so that the 'stopplutes 52 nitty reinein motionless duringl the t part of the platen-shitting strolre or" the lrey 57. Thus'tliepluten is arrested in position l'or the third type to strile, und soeur-ete alignment et these typedinpressions with the othersfis seeured, because the steps or parts Tel serve as interponents, being pushed by the shoulders 553 against the aforesaid i'ied stops 5". Upon reliering the liey from pressure, the ple-ten returns hy gravity to its lowest position (the usuel' oounter-hulenoing springheing not shown) end 'the remaining perts resume their norinul positions, the stop-plates 52 heilig returned by springs 75, toeether with Y :5; V the stopsetting her 59. The hul; (lo and Connections niey fell beek to norniel positions, aided byv springs 76.

llfh'en it is desired to print the topinost' types on the hars, u lzey Tl" muy he depressed-,Figiire 8, seid ley heilig inountet upon :i lever Z8 et the left-hand side of the lever 58; end an erin 79 upon lever f8 may engage the .plete GO and suing the shiftre-il 'freine up to the entren'ie position ut Upon the release of the sions is reliable.

En. order to remove the loose stopor pivotally eonf key 77 from pressure, all the] parts are the lowering of the shift-rail 35.

returned to normal positions, Figure 1.

rlhe ribbon-winding mechanism is not shown, but it may be substantially the same as in any Underwood machine, or of any usual or standard construction. A ribbonguide 81 at the front ot 'he platen may be ol substantially the usual form, and is seen at normal position in Figure 1, with the ribbon 82 below lthe printing` point. The mounting and operation ot' the ribbonguide may be such as to accommodate the extra throw of the ribbon necessary to accommodate the two additional shitting positions of the platen. For this purpose the ribbon-guide may have side langes 83 to embrace the lined type-guide Sil in front ot' the platen, these side rflanges 83 extending down tar enough to peri iit the longesty throw ot' the ribbon-guide without running up oft trom the type-guide. The ribboncarrier 81 is also provided (tor its lower end) with a fixed guide in the iorm ot a vertical post 85, rising from a part 86 ot the 'framework ot the machine overlying the key-levers. The ribbon-guide has at its lower end an ear 87 perforated to lit upon the guide S5; this ear being Jormed upon the lower end ot downward rigid extension 88 of the ribbon-guide, which is thus given substantial length, and hence is kept under controlwithout being made unduly heavy7 and without the necessity ot tight fitting o1A the parts.

r)The ribbon-guide is shi'lted up and down at the type strokes by means ot an arm 89 projecting forwardly from a rock-shaft 90, and having at its end a slot 91 to engage a pin 92 iXed upon the ribbon-guide. Ahoi/'e this pin the guide entends forwardly at 93 and upwardly at 9e alongside of the rear guiding face of the type-bar segment 95. The rock-shaft 90 is capable ot up-and-down case-shi*ft-ingv movements, since it extends horizontally between the plates 45, of the shift-rail frame, and is vpivoted 'thereto so to shift therewith together with the ribbon-vibrator 81, From said rock-shalt extends a short arm 96, which is connected by a link 97 to an ear 98 lined upon the universal bar trame 99 of the ribbonvibrating;` and carriage-feeding` mechanism. The link is pivoted to said ear at 100, and the relationship of the pivot 100, the link 9T, the arm 96, the pivot 90, and the arm 89. is such that as the platen shi'lts up to its dilferent stations. the ribbon-guide 81 and the ribbon 82 shift accordingly, so that the printing line on the platen is properly covered by `he ribbon at all shifts et the platen, at the strokes ot the type-bars. rllhe curved universal bar carried by the trame 99'is seen at 101 and is substantially ot usual form. The sides oi1 the universal bar Yframe are bent downwardly at 102 to accommodate tkt rear end the universal bar is pivoted at 103 to the usual upright arms 104. At each type-stroke the universal bar 101 is pressed rearwardly, together with the traine 99 and ear 98, thereby pulling on the link 97 and rocking' the arm 90 and shaft 90, and hence lifting the arm 89 together with the ribbon- `guide 88, 9-i, 81, so that the ribbon covers 'the printing point as the type strikes.

'lhere are diagrannnatically illustrated at "ig'ure 2 examples of the type-blocks 20, in o'ted lines, one type-block containing the ipes 'tor the tour forms or" the Arabic letter ha and the other having the letter reim lt will be understood that other 'ym-bars are used for other letters of the Arabic alphabet, one type-bar for each letter, each type-bar having' all 'tour forms of the same letter. In cases where a letter has less than tour forms, the type-bar may have a Correspendingnumber ot letters thereon. For convenience, the types are shown at Figure 2 as having the saine form as the type-in'ioressions have upon the work-sheet, these terms being the reverse of what would actually appear upon the types. Since the platen 16 normally in lowermost position, the bottom types 21 upon the type-blocks print the niedial characters oli Arabic words, so that a large proportion of the writing may be e'liqeeted without holding down a shift-key. The second types 22 are for the initial forms ot' the alphabetical letters, these types being brought into play by kdepression oi the left-h and shift-key 18, which has to shittthe platen 4only one step, so that `he work of shitting :tor the frequently used initial characters may be minimized. l ie third types 23 upon the type-blocks are tor the inal forms ot the characters, and there is used therefor the key 57, which shift-s the laten 'two steps, as at Figure 7. The types upon the type-blocks are for the iolated forms' ot the letters., and, as these are used less than any of the other forms, 'the key Ti' is used therefor, this being,` the shift-key which is the most laborious to depress, as it throws the platen the greatest distance, Figure 8.

At Figure 4 is shown diagrammatically the keyboard of the machine, each alphabet key 10 having only one character 105 thereon. These characters for the most part represent medial letters, and are typed when the platen is in its lowermost or normal position. Any ot the other three Jforms on any type may be brought into use by first depressing the appropriate shift-key 4:8, 5T or 77, so that only a single alphabet cal character needs to appear on each of the alphabet keys; this beingl an important advantage over previous keyboards, in which eich key bore two alphabetical characters, tending to confuse and retard the operation.

Inv some instances, as in the case ot alii dal, dhal ra Zai and Wawv the alphabet does not contain final and medial forms. ln these cases the keys 'for these types need not print any alphabetical letters when the platen is in normal position, but'only When the platen is shifted to appropriate positions.

Many of the keys are shown blank. rllhesel Having thus described my invention, l'

claim: y

l. A front-strike type-bar typeivriting machine comprising type-bars, each having Jfour types thereon, a platen, and a platen-V shifting mechanism including a set of three shift-keys for shitting the platen in the same direction trom its normal vposition to three diiierent positions, and means, including shiit-ltey-controlled stop devices, 'toi-'stopping` the platen in all four ot said positions.

2. A iront-strike type-bar typewriting machine comprising type-bars, each having itonr types thereon, a platen, and a platenshii'ting mechanism including a set of three shift-keys ior shitting the platen in the same direction trom its normal position to three dillerent positions, and means, including shitt-llzey-controiled stop devices comprising tivo lined stops 'and tivo movable stops, 'for stopping the platen in all vtour ot said positions. I

3. j; 'front-strike type-bar ltypey'v'iting machine comprising type-bars, each having i'our types thereon, a shittable member, and a case-shitting mechanism including ar set ot three shift-keys for hshitting said member in the same direction from its normalposition to three dirle-rent positions, and means, including shift-hey-controlled stop devices comprising relatively fixed stops to'rlimiting 'the extreme movements ot the shittable member and intermediate stops movable into and out of effective positions, for"stopping the shittable member' in all four of vsaid positions.

et. A front-strike type-bar -typewriting machine comprising vtype-bars, each -liaving ionr types thereon, a platen, and a ,platenshi ting mechanism including a set or three shii't-l'ieys for shitting the platen i'n the-'same direction from its normal position to three different positions, VVandI means, including sinforay-controlled 'stop' :devices 'comprising tivo listed stops and tivo movablestops connected to each 'other-'to movie a nfni5t, for

tions.

5. A 'front-strike type-bar typewriting machine comprising type-bars, each having Vtour types thereon, a, shittable member, and a case-shitting mechanism includinga set otl three shift-keys for shitting-said member in the vsame direc' io'n from its normal position to three different positions, and means for stopping the platen in all four of said positions, including shitt-lie'y-controlled stop devices having relatively lined stops for limiting the eXtreme move rents ot the shittable member and intermediate stops movable into and out of effective positions, sa-id movable stopsv connected to each other and movable as a yunit. n

6. A liront-strike type-bar typ'ei'i'triti'ng machine comprising type-bars, eachhaving 'ourtyp'es' thereon, `a shittable member, and a case-shitting mechanism including a set ot three shift-keys for shifting said member in the same direction from its'normal position to three different positions, and means for stopping the platen in alll four ot 'said positions, including shi'it-ley-controlled stop devices having ,relatively fined stops for limiting the extreme movements of Athe'shi'ttable member and intermediate stops movable into and out of effective positions, said movable stops connected to each other and movable asa unit, and normally occupying a position l'between the fixed stops.

7, A front-strike type-bar typer'vriting machii'i'e comprising type-bars, each having four types thereon, a shittablemeniber, and a case-shifting mechanism including a set ot' three shift-keys, and also including 'shiftkey-controlled stop devices yincluding 'rela- A tively lined stops for limiting" the eXtreme movements of the shiftable member, and intern'iedi-a'te `stops movable into and out of effective positions, said movable stops connected to each other and movable as a unit, and including' one stop for arresting the platen or shittable member at its shortest stroke, and another stop for limiting the next longest stroke of the .platen or caseshiiit member, said i'ntferi'nediate stops being under Vthe control of each' ot two vshift-keys which impart the longest th rows to the shiftable member.

r8. A front-strike type-'bar typetvriting machine con'iprising type-bars, each having tour types thereon, a platen, anda platenshifting mechanism including a set or three shift-keys, vand also including shift-'key-controlled stop mechanism, the latter vincluding two fined stops and t'wo movable stops, sa-id stop lmechanism including stops adjacent' to each 'eind or the platen. l

9. A 4typevritin'g fmachine provid'e'd'with front-strike type-'bars and a platen, said letter-feeding carriage for said ypla-ten, ykeys at the keyboard for effecting shifting of said platen from normal position to any one orp three case-shifting positions, and movablestop mechanism controlled by certain of the shift-keys and including movable stops at the ends of the carriage.

10. A typewriting machine provided with front-strike type-bars and a platen, said typebars having each four types thereon, a lettereeding carriage ttor said platen, keys at the keyboard for effecting shitting ot said platen from normal position to any one of three case-shitting positions, movable-stop mechanism controlled by certain of they shi't-keys and including movable stops at the ends ot' the carriage, and means including a bar ef:- tending along the run oft the carriage for maintaining a connection between shittkeys at the keyboard and the movable-stop devices u pon the carriage.

1l. A typewriting machine con'iprising a platen carriage and iront-strike type-bars, each extended to oai-ry tour types, the types and platen being relatively shittable, and the carriage comprising a traine which has a front bar portion which is elevated above the remainder of the carriage to clear the eX- all tended type-bars, said front bar being below the line or" vision.

lilik typewriting machine comprising a set oit Afront-strike extended type-bars, each carrying tour types, a carriage, a platen, a` shi'ltable platen iframe upon said carriage, pairs oit arms connecting said platen traine to said carriage to guide the platen, and a stop mechanism, including stops on the cai'- riage, for arresting the platen in toiir positions.

13. A typewriting machine comprising a set ol liront-strike extended type-bars, each carrying tour types, a carriage, a platen, a shittable platen; :trame upon said carriage, a shift-rail trame mounted upon the framework et the machine to shil't the platen Ytraine to 'four oase positions, pairs of arms connecting said platen frame to said car-` riage to guide the platen substantially vertically, and a stop mechanism, including stops on the carriage, for arresting the platen in 'four positions.

lll. ln a typewritiiig machine comprising front-strike extended type-bars carrying four types each, a platen shittable to four case positions, a shirt-rail frame mounted upon the 'framework oit the machine to shift the platen, and three. shift-keys, each capable of shifting the rail frame a dil'l'erent distance from the remaining shift-keys, while the latter remain stationary, one of said shift-keys placed at one side ot the keyboard, and the remaining shift-keys placed at the other side ot the keyboard, arms being provided upon said shift-rail frame, and elbow levers being operated by said keys and engaging said arms.

15. ln a typewriting machine comprising front-strike extended type-bars carrying tour types each, a platen shiftable to four case positions, a shift-rail frame mounted upon the frame work of the machine to shift the platen, and three shift-keys, each capable of shifting the rail frame a different distance from the. remaining` shift-keys, while the latter remain stationary, one of said shift-keys placed at one side of the keyboard, and the remaining shift-keys placed at the other side of the key-board, arms being provided upon said shift-rail trame, and elbow levers being operated by said keys and engaging said arms, one of said rail frame arms operable by two keys, and having a iange for engagement by one of the key levers.

1G. In a. typewriting machine comprising front-strike extended type-bars carrying `four types eac-h, a platen shiftable in the same direction from a normal to three other case positions, a shift-rail frame mounted upon the framework of the machine to shift the platen, three shift-keys, each capable of shifting the rail frame a ditlierent distance from the remaining shift-key, and movable intermediate stops controllable by two oitl said keys.

17. The combination of a carriage, a platen 'flamel shiftable thereon, the carriage having fixed portions for limiting the ezrtren'ie case-shitting movements of the platen iii-aine, and movable stops for engaging the platen-'trame and for limiting the intermediate case-shifting movements thereof.

18. The combination o't' a carriage, a platen frame shittable thereon, the carriage hai:- ing fixed portions for engaging' the platen trame and for limiting the extreme caseshilt-ing movements thereof, and movable stops for limiting the intermediate caseshitting movements oit the platen trame, said movable stops each comprising a` plurality of shoulders for arresting the platen frame in a.' plurality of intermediate positions. Y

19. The combination of a Carriage. a platen frame shit'table thereon, the carriage having fixed portions for engaging the platen frame and l'or limiting the extreme case-shitting movements thereof, movable stops 'l'or limiting' the intermediate case-shifting movements ot the platen frame, said movable stops each comprising a plurality ot' shoulders for arresting the platen traine in a plurality of intermediate positions, and means for shifting said movable stops to two ditferent positions to bring ditierent shoulders thereon into use.

20. The combination of a carriage, a. platen frame shittable thereon, the carriage having` lined portions for engaging the platen frame and for limiting the extreme ease-shitting movements thereof, movable stops for lim- Lal iting the intermediate ease-shit`ting movements ot the platen frame, said Vmovable 'stops eaeh com irisine' a ilnralitv of shoulders i" r arresting the platen trame in a.. ot yintermediate positions, and to] shitting said movable stops to tivo titl-ferent positions to bring different shoulders thereon into use, said stop-shitt ing means 'ineluding a roeking member eonnected to both oi" saidA movable stops.

2l. rihe combination of av carriage, a platen trame sliittable thereon, the Carri-awe having` lined portions for limiting the e1;- treme ease-shifting; movements of the plate :tr-ame, movable stops for limiting the intermediate ease-shitting movements' ot the platen 'fran e, said movable stops each eemprising a plurality ot shoulders for rresting the carriage in `a plurality1 of intermediate positions, means 'for shitting said movable stops to tivo dififerent positions to bring dilierent shoulders thereon into use, said stop-shiitin@ means including a roekingi' member Connected to both oi' said movable stops, and means upon theA framework ot.' the machine to engage and operate said rocking' member at all portions of the earriage travel.

Q2. rlhe Combination ot a carriage, a platen trame shi'ttable thereon, the carriage having lined portions for limiting the extreme easeshi'fting' movements o'f the platen trame, movable stops 'for limiting` the intermediate ease-shitting movements ot the platen frame, said movable stops each comprising' a plurality et shoulders tor arrest ineT the carriage in a plurality ol' intermediate posit-io means for shifting said movable stops -to tivo diierent positions to bring; diiierent shonlders'thereon into use, said stop-shitting means including a rocking meniber eomieeted to both et said movable stops` means npon the 'framework oi the machine to engage and operate said rocking member at allportions ot' the carriagetravel, and a plurality ot keys operating` said rocking member and simultaneously shitting` the platen.

E23. rllhe combination ot a Carriage, a laten trame shiitable thereon, the carriage tying lined portions 'for limiting the er:- reme ease-shiftino' movements oit 'the platen rame, movable stops 'torlimiting t1 mediate ease-shitting' movements ot the platen trame, said movable stops each comprising a plurality of shoulders for arresting` the carriage in a plurality of inter-y mediate positions, means 'for shifting said movable stops to tvvo diderent positions tobring` dil'lerent shoulders thereon into use, said stop-shitting means including a roeking member eonneeted to both oi said movable stops, a transverse rock-shaft jonrnaled upon the framework and havingbetween its ends an arm to engage said rocking member upon the framework a 'sliil ne intery on the carriage, and keys to operate said rook-shaft.

24. rlhe eon'ibination of a Carriage, a

*ilaten frame shiitable thereon. the `eaimiafre l a;

'having 'fined portions for limiting' the ei;-

t-reme easesshittingv movements oifthe platen trame, movable stops for lin'ntmg the interniediate ease-shitting movements oit the yplaten trame, said movable stops each eomsaid ystop-shiitting' means ineluding),` a roelring` member Connected to bolli et said movable stops, a transverse rock-shaft jonrnaled nd having; between its ends an arm to engage said rocking` member on the Carriage, and keys to operate said rock-shaft, said rook-shaft having at its ends arms pivotally conneeted to the movable stop members.

25. ln a typeivritinl;l machine Comprising a-earriage, front-strike extended type-bars carrying tour types each, a platen trame -shiitable to ioni' ease positions, a shift-rail frame' mounted upon the Jframework ot the 'machine tovslii'lit the platen trame, ythree shirt-keys, eaen Capable ot shitting tr e rail `iframe Va .dili'eront distance lron'i the remain ing` shift-keys, the lCarriage having lined portions 'for limitingr the extreme ease-shittmovements et the platen traine, and movable stops for limiting the intermediate ease-shitting: .vements ot the platen trame, said stops oper ble by sai-d lf v,

ka tvpen'ritinlo; maehine romprisin;`

a carriage, limit-strike extended type-bars e. 1ving,` 'tour .types eaeh, a platen tremeile to toni ease poe' ons. a shift-rail trame monnted i son the 'framework oit the maehine to shift the platen frame, three shi'tt-lzeys, eaoh capable of shitting; the rail L t the remainy ,fing lined por- -liting the extreme case-shitting; ilE the platen trame, and movable intermediate easeti Yfor -li movements Y stops `for limiti shitting mo vements said stoos operable by L said keys and each Comprising a plurality oi shoulders tor are' restino t.ie Carriage in a plurality of interthe platen trame,

and means for Causing the ribbon-vibrator to cover and uncover the printing point at the type-strokes in all positions to Which the ribbon-vibrator shifts With the platen,

ing guide-iianges to engage said `post to guide the ribbon-vibrator between its eX-' treme positions, a downward extension upon said ribbon-guide and descending below said post, and means to guide said downward extension. Y,

28. ln a front-strike type-bar typewriting machine, the combination with two relatively shittable elements, one o'rt'whichis a platen and the other of which is a system ot type-bars, eachihaving tour types thereon, of a mechanism to etlect relative case-shifting between the elements to bring any selected set ot types into use, said shitting,` mechanism including three shii'tdreys and also including` two stops controllable by two of said shift-keys. l,

29. ln a front-strike type-bar typewriting,` machine, the combination with two relatively shittable elements, one ot which is a platen and the other of which is a system ot Vtype-bars, eacn having four types thereon,

of a n'rechanism to effect relative oase-shitting between Ythe elements to bring any selected set et types into use, said shifting mechanism including4 shittflreys and also including a pluralityY of shittlfey-c9ntrolled stops and constructed so that at the opera tion or different shift-keys the element controlled thereby shifts one or more complete steps while Vthe other element remains stationary. i

30. ln a trent-strike type-bar typewriting` machine, the combination with two relatively shittable elements, one ot which is a platen and the other ot which is a system et' typebars, each having tour ltypes thereon, ot a mechanismVV to etlectl relative case-shitting between the elements to ,bring any selected set of types into use, said shitting,` mechanism includingthree shift-keys and also including two stops controllable by two ot said shift-keys, means controlled by one of said shift-keys for shitting the shittable element one step, means controlled by another of said shift-keys for shitting the shit-table element two steps, and means controlled by another of said keys for shitting the shiftable element three steps.

31. In a front-strike t pe-bar t ewritinff' Y- YP s machine, the combination with two relatively shi'ttable elements, one of which is a. platen and the other et which is a system of typebars, each having tour types thereon, oit a mechanismV to eiiect relative case-shitting,- between the elements to bring any selected set et types inte use, one ot' said elements constructed to occupy four shift positions,

and said shifting mechanism including lixed f stops to determine the extremeipositions ot said shiitable element and vmovable stops to determine its intermediate positions.

In a typewiitingv machine, the combination with two relatively shiftable elenents, one of which is a system of typebars carrying four sets of types, ol three shift-keys tor etlecting relative shifting' movements oit said elements, and a set of shift-stops including' a stop shizttable into and out ot' effective position and connected to one of said keys to be controlled thereby.

33. ln a typewriting machine, the combination with two relatively shittable conipanien elements, one et which is a platen and the other ot which is a system of type-bars, each type-bar carrying` four types,fot shiftlreys, one capable of eitecting an element shift of one full step while the companion shittable element remains stationary, and another key capable ot' effecting an element shift ot' two Jfull steps while the companion element remains stationary, and stop mechanism to control the relative positions ot said elements for all tour sets of types.:

In a typewriting machine, the combination with two relatively shittable companion elements, one ofwhich is a platen and the other otwhich is a system of typebars, each type-bar carrying four types', ot shi'lttdeys, one capable Vof eecting` an ele ment shift of one full step while the com panion shittable element remains stationary, and another hey capable of effecting' an ele ment shift of two full steps while the companion element remains stationary, and stop mechanism to control the relative positions of said elements for all four sets of types, the stop mechanism including means for positivelyI arresting a shiftable element or bringing it to a deadstop after the shifting operation.

BURNHAM C. STICKNEY.

lVitnesses VJinmnr l?. Trionnn,

@AT1-infame A; NnwaLL.

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