US1600371A

US1600371A - Typewriting machine

Info

Publication number: US1600371A
Application number: US570565A
Authority: US
Inventors: Burnham C Stickney
Original assignee: Underwood Typewriter Co
Current assignee: Underwood Typewriter Co
Priority date: 1922-06-24
Filing date: 1922-06-24
Publication date: 1926-09-21
Anticipated expiration: 1943-09-21

Description

B. C. STICKNEY TY-PEWRITING MACHINE Sept. 21 1926.

3 Sheets-Sheet 1 Filed June 24, 1922 //7 van for Sept. 21 1926. 1,600,371

B. c. STICKNEY TYPEWRITING MACHINE Filed June 24, 1922 3 Sheets-Sheet 2 Sept. 21 1926.

B. C. STICKNEY TYPEWRITING MACHINE 3 Sheets-Sheet 5 Filed June 24, 1922 I lnvenfon'.

Patented Sept. 21, 1926.

UNITED STATES 1,600,371 PATENT OFFICE.

BURNHAM c. STICKNEY, or ELIZABETH, NEW EassY, Assmnon TO unnnawoon 'rYrnwnrrnR COMPANY, or NEW YORK, N. Y., A CORPORATION or DELAWARE.

TYIPEWRITING MACHINE.

Application filed June 24, 1922. Serial No. 570,565.

This invention relates to front-strike typebar typewriting machines having a plurality of case-shifts, especially those having four-type type-bars.

An object of the invention is to produce a machine which is simple in construction, effective in operation and inexpensive to manufacture. Another object of the invention is to produce a machine capable of a large variet of uses, and having other advantages. ne .of the objects is to provide for quickly removing as a unit the entire type-action,including the,types and type-keys, together with the shift-keys,and replacing the removed unit with another unit, the type-action of which may include a different set of types, and which also may be otherwise modified, if desired.

According to the present invention, the platen is. non-shiftable and the type-bar segment is shiftable from a normal position to. three different case-shift positions. The shifting of the type-bar segment is accomplished by means of three independently-operable shift-keys. The segment is capable of occupying two extreme positions and two intermediate positions, movable stops controlled by.the'shift-keysbeing provided for determining the intermediate positions. More particularly, one of the keys shifts the segment from a normal intermediate position through a single space to an extreme position, another key shifts the segment from its normal position in the opposite direction through one space to another intermediate posit-ion; and the third key shifts the segment from normal position through adouble space to an extreme or final position. Key-controlled movable stops determinethe normal position and the other intermediate position of the segment.

According to another feature ofthe invention, the entire type-action, including the type-bars and key-levers,'also the shiftable segment, shift-levers, and stop mechanism for the segment, are all mounted upon a removable subsidiary frame, which is detachably mounted in the main framework of the machine. This arrangement is such that the subsidiary frame andall the parts carried thereby may be readily assembled as a unitand attached to or detached from the main framework. Another subsidiary frame carrying other corresponding or different parts andmechanisms may be substituted for the one removed.

Other features and advantages will hereinafter appear.

In the accompanying drawings,

Figure l is a substantially central frontto-rear' vertical section of a typewriting machine embodying the present invention, with the various parts in their normal positions, for typing with the second type from the top in the series of four typesv on each type-bar. p

Figure 2 is atransverse vertical section, with parts omitted, the section being taken at the front of the platen and type-bar segment and at the rear of the types and keyboard, and substantially at the offset line 22 of Figure 1.

Figure 3 is a partial plan view forwardly of the. platen, and shows the mounting of the vibrating ribbon-guide.

Figure 4 is a sectional view, on a reduced scale, similar to Figure 1, showing the first shift-key and means operated thereby for shifting the type-bar segment downwardly, but showing the segment at its normal position, similarly to Figure 1. I

Figure 5 is a similar View, but shows the segment. shifted down by means of the first shift-key, to bring into. use the first or uppermost. type in the series, the second and third shift-keys being shown at normal positions.

Figurefi is a similar view, showing the segment shifted up to its intermediate caseshift position by means of the second shiftkey, to bring into use the third type the top in the series.

Figure 7 is a similar view, showing the segment shifted up from normal position throughtwo case-shift spaces by means of the third shift-key, thereby to bring into use the lowermost or final type in the series.

The typewriting machine of the present invention is an improvement upon the standard Underwood typewriting machine, and retains many advantageous features thereof. In the typewriting machine shown in the drawings as one embodiment of the invention, the platen 1 is non-shiftable and is journaled by means of its axle 2 directly upon a platen-carriage 3 which is mounted forletter-feed or reverse movement upon a main frame 4 of the machine At its rear the carriage 3 is mounted to from travel on a rear rail 5 on the main frame 4. The main frame 4 comprises a front cross-bar 6, provided along its rear side with a shelf 7, forming-a front rail on which runs a carriage-roller 8, journaled in a housing 9, carried by a front bar of the platen-carriage 3. The front crossbar (i and the front carriage-bar 10 are sufliciently elevated to clear the extended four-type typebars, but are below the line of vision, so as to render the printing line 'on the platen visible by the typist. Certain features in the construction and arrangement of the front frame-bar 6 and front carriagebar 10 and associated-parts maybe the same are disclosed-in my earlier co-pending application, Serial No. 568,691, filed June 16, 1922.

. The carriage 3 may be drawnalong'in its letter-feeding direction of movement by nie ansof a usual spring-barrel (not shown), under the control of substantially the'usual Underwood escapement -mechanism, which is mountediupon an upstanding bracket 11, secured upon the main frame 4, so as to form virtually apart thereof. The escapement mechanism comprises a dog-rocker 12, pivoted at 13 upon the bracket 11, and having a downwardly-extending arm 14 by which the dog rocker 12 is operated, by means hereinafter described. The dogroclrer 12 carries fixed and loose dogs 15 and 16,to engage a ratchet-wheel 17, mounted on the upper end of the'bracket 11 and connected to a pinion 18, which engages with a suitable rack (not shown), carried by the platen-carriage 3. r

The ribbon-vibrator, which is also mounted upon the main frame 4, includes a bellcrank-lever '19, :pivoted at upon a forwardlyextending arm of the bracket 11. T he ribbon-vibrating bell-crank lever l9 has a downwardly-extending arm 21 by which it is operated, by means hereinafter described. It .also has a forwardly-extending arm-22,: pivoted at 23 to the lower end of a vertically-vibrating ribbon-guide 24, which at its upper end is provided with eye-formi wingportions25to guide a usual ribbo (not shown), and to cause the ribbon to cover and uncover the printing point on the platen as'the ribbon-guide vibrates. The

ribbon-guide 24 is guided'on the mainframe softhe machine by means of rearwardly inwardly turned hook-portions 26 (Alix formed thereon, to engage in'groov'es formed in the sldes of a 'guide bloc'k 27, secured upon a tra-n verse b ari28, whichat its ends issecured to the side walls of the main fra 1194,?1'5 shown in Figures 1 and 3. Since. the ribbon-vibrator, comprising the bellcranlr lever 19 and the vibrating ribbon- 1116.024,isanounted upo'n the'main frame 4, and since the plat-e111 is non-shiftable, the

necessity of providing means for shifting the ribbon-vibrator is avoided.

According to the present invention, a removable subsidiary frame 29 is provided and is detachably mounted in the main frame '4 by means'of screws 30, two'at each side of the'n'iach-ine, which pass through the side walls of the main frame 4, near the bottom there0f,-and enter the lower part of the subsidiary frame 29. By removing the screws 30, the subsidiary frame 29, together with all'the parts and mechanisms carried thereby, to be hereinafter described, may be withdrawn from the main frame 4 at the bottom thereof. Thatmay then be replaced by an other subsidiary frame which may carry either similar or modified mechanisms, and which alsomay carry adifferent set of types, f(1)r typing in another language, for exampie.

According to the 'presentinvention, a segment-frame is -mounted in the subsidiary frame 29 for up-and-down case-shift move ments from normal position to three different case-shift positions. In the machine shown in the drawings, the segment-frame comprises a type-bar segment31, secured by means of screws 32 'toan upper cross-bar 33,provided at its ends with depending legs 34, which are connected together near their lower ends by means of a lower transverse baror bridge 35. A usual type-guide 36 is carried by the segment 31 at the front of the vibrating ribbon-guide 24, but, in carrying out the present invention, neither the tyj ieguide 36 nor any part of the segmentframe 31 has any mechanical connection with the vibrating ribbon-guide 24.

The means for guiding the segment-frame, including the type bar segment 31, will be next described. A transverse rock-shaftBT is journ'aled in the upper and rear part of the subsidiaryframe 29 and at its ends has fixed thereon forwardly-extending arms 38 which normally are inclined slightly clownwardly. At their forward ends these arms 38 are pivoted upon 'studs39 which project from the outer sides of the segment-framelegs 34 nearthe middle thereof, the rockshaft 37 compelling the arms 38 to swing together as a unit and forming therewith a rocking frame. A rock-arm 40 has a fulcrum-pivot at 41 upon the rear and lower pa'rtof the subsidiary frame 29, and is of the same length as, and extends forwardly in parallel relation to, the rock-arms 38. The rock-arm40 at its forward end is pivoted at 42'to a'lug 43 which projects down from the middle of the lower cross-bar or bridge 35 of the'segment-frame. The segment-frame in its case-shift movements may swing freely up and down upon the rockarms 38 and 40, no other guiding means bemg 1 required.

The type-bar segment 31 is provided with.

radial guide-slots 44, in which are pivoted, upon an arcuate fulcrumewire 45, type-bars 46, to, partake of the case-shift movements ofthe segment 31, the number of type-bars i6 in the set being about equal to those cmmonly employed in the standard Underwood or other single-shift typewriting machine. Each type-bar it carries anextending typeblock 47, having-four types, 48, 49, 501 and 51, arranged in a'series thereon and numbered from the uppermost downwardly, for convenience of description. In the typewriting machine shown in the drawings, normally, or without case-shifting, the second type 19 in the series will strike at the printingpoint upon the front of the platen 1, as indicated iniFigure 1 by the arcuate brokenline'52, and as shown in'Figure 1 by the upraised type-head 4t? the shiftable segment 31 then having. a corresponding normal intermediate position.

In orderto print by means of the first or uppermost type as in the series, the type bar segment 31 is shifted downwardly to its lowermost or final case-shift position, shown in Figure 5; to printby means of thethird type in the series, the segment 31 is shifted upwardly from its normal position to an intermediate case-shift position, shown in'Figure 6; while to'print by means of the last or lowermost type 51 in the series, the segment 31 is shifted upwardly from its normal intermediate position through'two caseshift spaces or distances to its uppermost or final case-shift position, shown in Figure 7. According-to one way of carrying out the invention, it'may be desirable to have the second type 49 print the small letters of the alphabet, to have the first type L8 print the capital letters, and to have the remaining two or'lower types 50 and 51 print miscel laneous characters, such as figures and various commonly-used arbitrary symbols and signs. It is understood, however, that the invention is not limited to the above-noted particular arrangement of the types nor is it limited to the particular case-shifting arrangement above mentioned.- other hand, other arrangements may be effected according to any particular requirementsor demands, depending upon the lan guage to be written, or upon other requirements, as-the case maybe. A-t'yperest 58 is provided for the type-blocks 17, and supported upon the segment-frame to shift therewith by means off0rwardly-cxtending bars or arms 5%, of which one is shown in Figure 1. 1

j The segment-frame, including the typebar segment 31, is automatically returnable from any of its case-shift positions to its normal intermediate position. It is automatically returned by gravity from its uppermost and from its On the v intermediate casc-- shift positions to its normal position. It is automatically returned to 1ts normal intermediate position from its lower TCZSG-SlllIt position by spring-means, This con'iprises a spring 55, at each side of the machine, acting between the subsidiaryframe .29 and a lifting arm or lever 56, fulcruined at 5'? upon the subsidiary frame, the forward ends of the levers 56 engaging beneath raised end-portions 58 of the bridge-bar 35, to the main or middle portion of which the endportions 58 are connected by means ofshort upright portions 59, as shown in Figure 2. Each segment-lifting lever at 56 is provided with a tail 60 to abut against a stop-pin 61' on the subsidiary frame 29, so as to render the spring 55 ineffective when the segment frame has reached its normal position.

The-means for case-shifting the segmentframe from its normal intermediate position to any of its three case-shift positions includes a transverse rock-shaft 62, journaled in the lower part of the subsidiary frame 29' forwardly of the segment-frame, and having fixed upon its ends rearwardly-extending rock-arms '63. The arms 63 are pro vided with slotted or forked ends to engage studs 64 carried by lugs 65 which extend downwardly from the lower ends of the segment-frame-legs 34, so that by rocking the rock-shaft 62 in one direction or reversely, the segment-frame will be correspondingly lowered or raised.

In order to shift the segment-frame downwardly from its normal intermediate position at which printing isdone by means of the second or small-letter types 49, toa finalcase-shift position to print by means of the uppermost or capital-letter types 48, as shown in Figure 5 by the upraised typeheadd'f', a first shift-key- '66 is provided. This is carried by a first shift-lever 67, located at the right side of the machine and 'pivoted upon a fulcrum-rod 68 carried by aslotted transverse bar 69 which forms an upper rear tie-bar for the subsidiary frame 29 at the rear of the lower part of the segment 31.

WVhen the shi'ft-key 66 is de-" pressed, a downwardly-projecting lug 70 on' the shift-lever 67,-after traversing an intervening space provided for purposes which will hereinafter appear, is brought into engagement with a laterally-projecting lug 71 upon theforward end of a short intermediate lever 72 of the first order. The lever 7 2- is fulcrumed upon a stud 73 projecting inwardly from the adjacent side Wall of 'the'sub'sidiary frame 29. The continued downward movement of the shift-key 66raises a pin 'M-carried by the forward end of the intermediate lever 72. The pin 74 engages in a slot formed in the forward end of a short forward1y eXtending-' rock arm or lever 75 fixed uponthe rock-shaft 62, to rock the rock-shaft 62in a clockwise 1 if I) i lu . lengths as to impart the correct downward throw to the segment-frame to shift the latter through a single case-shift SP2tCe,"\Vlic;ll the shift-key 66 is depressed.

Inasmuch asit is-occasionally desired to write-oneor more words, or one or more lines, in capital letters, -a latch or locking device is provided for holding down the first shift-lever67. A latch-lever 77, having at its lower-end a hook 7 8. andat its upper end a finger-piece 79, is pivoted at upon'the shift-lever 67. A slotted comb 81, having an upper bar 82, whichforms a stop for the shift-lever67, as wellas forthe-other shiftlevers and key-levers, is carried at the front of the subsidiary frame 29. At its lower margin this comb 81 carries a for wardly-projecting member 83, which 'forms a catch or 'keeper for the hook 78, with which, as is clearly shown in Figure 5,'the hook normally does not engage, the shiftkey 66 thereby being normally left free'to rise :after each actuation. When it is desired to lock the shift-lever'67 down, the fi11gerpiece79 of thelatch lever 77 is drawn rearwardly, to'engage'the hook 7 8 with the latch or :keeper .83; and, obviously, by a reverse operation, the hook 78 maybe disengaged when desired. The disengaging movement of the latch 77 may be limited by a small stud 84 on the shift-lever '67, and preferably a light spring 85 is provided for maintaining the latch 77 in its "disengaged position.

For-shifting the type-bar segment 31 upwardly from itsnormal position to its intermediate case-shift position, to print by means of the third type 50 in the series, a second shift-key 86, Figures land 6, isprovided upon'a second shift-lever 87 located at the left side of the machine, Figure 2, and pivoted upon the fulcrum-rod 68. When the second shift-key '86 isdepress'ed, during the initial :part of its movement, lost motion,'the purposes of which will hereinafter ap ear, will be taken up between a downward y-projecting lug 88 on the shift lever 87 and a laterally-projectinglug 89 upon the forward end of a lever-arm '90 fixed upon the segment-shifting rock-shaft 62. Further depression of the shift-key86 will rock the rock-shaft 62 in a counterclockwisedirection, as viewed in Figures 1 .6 and 7.

and 6. It will thereby lift the segmentframe'by means of the rock-arms 63 from its normal position, shown in Figures 1 and 4-,

through a single case-shift space or distance to its intermediatecase-shift position, shown in Figure 6, for printing by means of the third type 50, by the upraised type-head '47. The lever-arm 90 is made of the :proper length to impart the correct case-shift'movement to the segment-frame when the shiftkey 86 is operated. When the shift-key 86 is released, the-shiftdever 87 will be raised by its spring 91 to'its normal position, at which it will be stoppedbythe comb bar 82.

For shifting thetype-bar segment 31 upwardly from its normal :position, shown in Figure l,throughtwo case shift spaces or distances to its upper final case-shift position, to print by =means of the flOWBIIIlOSt types 51, as shown by the-upraised type-head 47 in Figure '7, a-third shift-key 92 is .provided upon a third shift-lever 98, pivoted upon-the fulcrum-rod 68. After taking up the intervening lost motion provided for purposes which will hereinafter appear, a downwardlyprojectingilug 94 onthe third shiftlev'er 93 comes into engagement with a laterally-projecting lug 95 provided upon, the forward end of a lever arm 96 fixed on the segment=shifting rock-shaft 62. "Further downwardmovement of the shift-key 92will then rock the rock-shaft 62 in avcounterclockwise direction, as viewed in Figures 1 and 7, and will accordingly shift the segment-frame upwardly by means of therockarms 63 on the rock-shaft 62. The leverarm 96 is made of the proper-length, so that case-shift movement will be imparted to the segment 81 through two case-shift spaces, this lever-arm 96 for the third shift-lever 93 being considerably shorter than the corresponding lever-arm90 for the second shiftlever 87, as will beevident'by an inspection of Figure l and by a comparison of Figures hen the third shift-key 92 is released, av spring 97 will raise the shiftlever 98 to its normal, position against the comb-bar 82. 7

By reason of the relative locations and arrangement of, and spacin or lost motion provided between, the shiftlever lugs 70, 88 and 94c and the respective lever-arm-lugs 71, 89 and 95 operated thereby, when the first shift-key 66 is depressed the lever-arm lugs 89 and 95 will rise clear of and to the rear of the lugs '88 and-94'carried by "the second and third shift-levers, as is shown in dotted lines in Figure 5. Similarly, when the second shift-key 86 or the third shiftkey 92 is depressed, the lever-arm lug '71 will rise at the rear of and clear of the "first shift-lever lug 70, as will be seen from Figure 4:. v

"Preferably means are provided to relieve the second and third shifti k'eys 86 andy92 of a portion of the weight of the segmentframe, and for this purpose a counterbalance spring 98 is arranged to act'upon the segment-frame-shitting rock-shaft 62, the spring 98' having a tendency to rotate the rock-shaft 62 in a counterclockwisedirection, as viewed in Figures 1, 6 and 7. r

A shiit-key-controlled stop mechanism forthe shiftable segment-frame is mounted tween the end walls of the main frame 4 and the end walls of the subsidiary frame 29 nearly to the top of the segment-frame in its normal or unshifted position. In the illustrated embodiment of the invention, the segment-frame-stops are integrally formed upon the upper end portions of the plates 100 and thereby move as a unit therewith.

' Upper and 'lower stop-shoulders-101 and 102 have spaced overlapping portions which normally engage above and below an out-.

wardly-projecting pin orstud 103 carried by an ear or lug 10 1 which projects rearwardly from the adjacent segment-frame- ,leg 34. The shiftable segment-frame, ineluding the type-bar'segment 31, is thereby normally locked at its normal position against movement either upwardly or downwardly, but, by moving the stop-carrying members or'plates 100 rearwardly from their normal position, the segmentframe may be shifted downwardly, and, by moving these plates forwardly from-their normal position, the segment-frame may be shifted upwardly. When the segment-frame returns from its lower casesh1f t position it will be positively stopped at its normal position .by'the pin 103 abutting against the non-overlapping or forward portions of the upper stop-shoulders 101. Similarly when the shittable segment frame returns from either of its upper case-shiftpositions it will be'positively stopped at its normal position by the'pins 103 abutting against the near or non-overlapping portions of the lower stopshoulders 102. The overlapped shoulders 101 and 102 form a combined stopping de vice and normally efiective locking device.

for the segment-frame.

For positively stopping the segmentframe when it is shifted upwardly by the secOndshitt-key 86, the stop-pin 103 will abut against an intermediate stop-shoulder 105, located'upon the plate-100 at the ofand at a proper distance above the upper locking-shoulder 101 when the stop-carrytending lever-arms 109, each of which is ing plate 100 is moved forward sufficiently to free the pin 103 from the upper locking shoulder 101.; The lower case-shift position of the segment-frame, which is a final case-shift position, is positively determined when the the segment-frame is shifted downwardly by means of the first shift-key 66, by the pin 103 abutting against a lowermost stop-shoulder 106 formed upon the plate 100. The stop-shoulder 106 is at the front of the plate! 100 below the lower locking shoulder 102, the 'plate 100 being moved rearwardly to free the pin 103-from the lower locking shoulder 102. The shiftable segment-frame is positively stopped at its upper case-shift position, to whichit is shiftable by means of the third shift-key 92, by the stop-pin 103 abutting against an uppermost stop-shoulder 107. This stop shoulderis provided at a proper distance above and at the rear of the intermediate ease-shift stop-shoulder 1'05,the stop-carrying plates 100 being rocked forward a suiiicient distance so that both the upper locking shoulder 101' and the intermediate caseshift stop-shoulder'105 will clear the pin 103 as the segment-frame moves to its upper final case-shift position. I

- For causing the stop-carrying plates 100' to be rocked either backwardly ortorwardly, to render the different above-described stop-shoulders effective, as may be "desired, a shitt-key-controlled transverse rock-shaft 108 is provided. This rock-shaft is locked at the front of the segment-frame and ju t: above the shitt-levers,"is journaled in the end walls of the subsidiary frame 29, and has fixed upon its outwardly-projecting en-fs downwardly and slightly rearwardly b5;-

connected to the corresponding stop-carrying plate 100 by means of an'upwardly-iu clined link 110.

The stop-carrying plates 100 are normally urged rearwardly by means of'springs 111. During the initial part of the dow1iward movement of the first shift-lever 67 and before its lug 70 com'esinto contact with the intermediate lever-lug 71 for shifting the segment-frame downwardly, {as

hereinhe'fore described, a cam 112 on the shift-lever 67 v is actuated. This cam will permit a limited amount of forward and downward'movement of a pin or cam-'follower113 carried by an upwardly and forwardly projecting lever-arm 11 1 fixed upon the stop-controlling rock-shaft 108. Springs 111 will'be permitted to move the stop-carrying plates 100 rearwardly from their'n'ormal positions, shown in Figures 1 and 1,, until their lower lockings'houlders- 102 'dis-f engage the pins 103 carried by the segment frame. The further downward movement of the shift-lever 67 will then shift the I ment frame downwardly, as hereinbeforedescribed, until.- it is. positively stopped by the pins 103 abuttin against the lowermost the sprin s 55.1mm it is Jositivel i sto Jed;

by. the pins. 103 abutting against the fori wardoruon-overlapping portions-of theup- "locking shoulders 101; at the normal pon of the segment-frame. The further 1 sing; ofthe shift-lever 67 will force the follower-pin 113; rearwardly, thereby, --'-th i 1gh the connections. hereinbefore desed, n1ovingthe stop-carrying plates 100 forwardly to their normal positions so thatpins 103 on the segment-frame'are between the overlapping, portions of the opposed '1 stop-shouldersllll anjd;102, as shownin Figures 1 and 4, thereby to lock the segmentframe at; its normal position.

During the initial part of thedownward movement of the second shift-lever .87, a f "cam 115there0n acts upon a pinor camfollower." 116,.carried by a second leverarm 117. fixed upon. the stop-controll ng rock-shaft 108 to rotate the latterin a clockwise direction, as. viewed in Figures 1 and'6, Thereby, through the connections hereinbefore described, the stop-carrying plates. 100. are moved,- agai.nst the tension of their springs 111, forwardly from their normalpositions, shownin Figure fl. This distanceiofz movement is such that the upper locking shoulders 101 are moved clear of the pins 103 on V the segment-frame, whereupon the further downward movement. of the Shlft-IlGVQF 86 will shift the segmentrframe upwardly, as hereinbefore described, from its normal position, until it is positively stopped by the pins 103- abutting against the intermediate stop-shoulders 1.05 at the intermediate caseshift position of the segment-frame, as shown in Figure 6. When the second shiftkey 86 is released and the shift-lever 87 rises, first; the segment-frame will herestored by gravity to its normal position, where it; will be positively stopped by the pins 103 abutting against the non-overlapping portions'ofthe lower locking shoulders 102. The release of the cam-follower 116 by the shift-lever cam 115 will enable the spring 111 to move the stop-carrying plates 100 rearwardly. 'This will restore them to theirnormal positions, where they will-be stopp'edby reason of'the cam-follower-pin 113' coming into engagement with the cam 112' carried by the first shift-lever 67.

During the initial part of the downward movement of the third shift-lever 93, a cam 118provided thereon acts upon a cam-fol- I lower 119 carrieclby the lever-arm 117 fixed upon the stop-cont rolling rock-shaft 108 to rock this shaft in aclockwise direction,as

intermediate stop-shoulders 105.,

viewed in. Eigures 1 and'7,1to.a greater -'extent than it was rocked by thesecond shif lever cam 115, Thereby, through the con.-. nections hereinbefore described, the; stop-- carrying plates 100 are'moved; forwardly, against the tension of their springs 111, to an extent which willnot; only, freethe pins 103 fronrthe upper locking shoulders 101, but which also will clear these pins offthe Further downward movement of the third shift-lever 87 Will shift thesegmentrfraine. upwardly,

as hereinbefore described, fro ngits normal position, shown in Figure 1, through two; case-shift; spaces or distanceanntil.it; is pos-. itively stopped; at; its. uppermost case-shift; position by the. pins 103 abutting against the uppermost stop-shoulders 107, as shown in Figure 7. Upon the release of the third shift-key 92 and the rising of the shift-' lever, 93, the segment framewill-beautomatically restoredby gravity to its; normal position, where it will, be positively stoppedv by the pins 103 abutting against the rear portions of the lowerlocking shoulders 105 The continued: upward movement of the shift-lever 93 willthencausethe cam 118 to release the-follower-pin 1'19. thereby enabling the springs 111- to move the stopcarrying plates 1 00 rearwardly until theyare restored to their normal. positions 'with the followerpins 11 3 abutting against the cam 112" onthe first shift-lev er -67.'

The type-action shown as embodiedin the machine of the present invent-io11.;has -features in common with the corresponding; structure disclosed in, the aforesaid earlier application, and, in the presentinvention, is mounted upon the detachable;subsidiaryframe 29 to beremovcd therewitlnfrom the. main frame4andf-rom thepa-rts ofthe machine or mechanisms carried-thereby. Up-v standing sub-levers 1210f the firstorder are pivoted in guide-slots 122 in the segmentframe-bridge 35, upona. fulcrum-rod 123 carried by the segmenteframe-bridge 35, which by reason of the 1 ditfirentlengths of the subslevers, is bowed or curveddown? wardlythroughout its middle portion, the elevated end-portions 58 thereof providing spacefor the shift-levers-67, 8'7 and 93. The upper ends of the sub levers 121 carry pins 12 which work in curved slots-125provided in the type-bars 4.6. Downwardly-extending portions 126 of key-levers 127, carrying typekeys 128, are pivoted with the shift-levers iii segment-31 and sub-lever-carrying bridge 35. T he key-levers 127 are raised tonormal position against the comb-bar 82 by means of springs 130.

It is to be noted in this connection that the entire type-action, including the key-levers 127, operating links 129, sub-levers 121 and type-bars 46, as well as the segment-frame and the hereinbefore-described guiding means therefor, are mounted upon, so as to be removable with, the detachable subsidiary frame 29. v

The apparatus for operating the escapeinent mechanism has features in common v-sith the corresponding structure disclosed in the aforesaid prior application, and is mounted on the main frame 4. An escapemeut-operating rock-shaft 131, journaled in the end walls of the main frame 4, carries near its middle, a short upstanding leverarm 132, which engages at the rear the downwardly-extending dog-rockerarm 14; Adjacent its ends the rock-shaft 131 has fixed thereon a pair of downwardly and forwardly extending bail-arms 133, which, at

their lowerends, carry'a universal bar 134 operable by means of lugs 135 provided upon the rear edges of the downwardly-extend ing key-lever-portions 126. The operating lugs 135 are normally out of contact with the universal bar 134, asshownin'Figure .1, so that the dogrocker 12 will not be operated until near the end of a keylever-stroke. A spring 136 returns the universal b'ar1-34 to normal position with the upstanding arm against a stop-lug 137 provided on the bracket 11. I i

The mechanism for operating the hereinhefore-described ribbon-vibrator is mounted on the main frame 4 and has'features in common with the corresponding structure disclosed in the aforesaid prior application. A roclrshaft 138, journaled at its ends in the side walls of the main frame 4,- carries near its middle a short upstanding leverarm 139 provided with a pin 140 which enin a radial slot formed in the'lower end of the downwardly extendingarm 21 of the bell-cranlolever 19. Adjacent its ends the roclnshaft 138has fixed thereon apair of downwardlyeextending bail-arms which at their lower ends, carry a universal bar 142 to be operated by rearwardly-projecting lugs 143 provided upon the down-= wardly-extending portions 126 of the keylevers above the escapement-operating lugs 135. A. restoring'spring 144 isprovided for the ribbon-vibrating universal bar 142;

The escapement-mechanism operatinguniversal bar 134 and the ribbon-vibrating universal, bar 142 may swing freely upon their respective bail-arms 133 and 141 between the side walls of the detachable subsidiary framePQ; This is arranged so that the lat -ter may-be readily 1 withdrawn from' the rward ends of spacing levers 146 which the of substantially the same form as l(G:/-l8VG17S 127 and may be pivoted there- 66 on the detachable subsidiary e-loclring bail-rod 147, which is noriree from, but is engageableiu the usual v' v, with hoo s 143 on the keylcvers 1" is carried at its ends upon the upstanding bail-arms 149 which at their lower ends are pivoted at 150 upon the side walls of the main frame 4 adjacent the bottom thereof. When the subsidiary frame 29 is det ched froin'the main franio 4, it can be readily seen from Figures 1 and that the subsidiary frame 29 and key-lc sers 12? mayfreely move downwardly array from the line-locking hail-rod 1 en the bail net. arms 149 and their pivots 1 (X V Besides its upper tic-liar 6. the frame 29 hasa rear lower tie-bar by means of a lug 152, carries the iulcrun'i-' pivot 41 for the segment-frame-guiding rock-arm 40. .lhe subsidiary frame also has a front lowerframe-bar or tie-bar 153 to which the return springs 130 for the keylevers 127 are shown as connected.

lVhcn the subsidiary frame 29 is detached and removedfrom the rest of themachine, in the manner hereinbefore described, it w ll carry with it the entiretype-action includ ing the'typediai's 46 and type-keys 123, and will also carry with it the three shift-keys 66, 86 and 92, together with the shift-keycontrolled stop mechanism for the shiftable segmentframe, and the spacekey 145. This will leave upon the main frame the platen 1, the platen-carriage 3, the carriagefeeding escapement mechanism and the operating mechanism therefor, including the universal bar 134, the ribbon-vibrator-and the operating mechanism therefor, including the universal bar 142 and the line-locking bail-rod 147. When the subsidiary-frame 29, together with the parts carried thereby, is thus detached and removed from the main frame 4,

Variations may be resorted to within the i from one type to another scope. of the invention, and portionsof' the improvement-s may be used. without O hers. l

Having thus described my invention, I claim:

1. In a front-strike typewriting machine, in combination, a platen, a type-bar segment, a set of type-bars pivoted on the segment and each having a plurality of types arranged in a series,longitudinallythereon, said platen and segment being relatively shittable members, and a case-shift mechanism including a first shift-key for shifting the shittable member from. a normal intermediate position in. one direction through a single case-shift space ordistance, a second shift-key for shifting said shiftable member from a normal intermediate position through a single case-shitt space in the. reverse directionto which the segment is shiftable by the other shift-key, stops. for limiting the case-shift movements of sa d shittable memher, and a movable device selectively movable in opposite directions different shittkeys arranged to stop theshiftable member at either up or down shift thereof and at the intermediate normal position of said shiftable member upon its return from either of its said case-shift printing positions.

2. In a front-strike typewriting machine, in combination, a non-shittable platen, a set of shittable type-bars each swingalole to strike the platen and having four. types thereon arranged in a row or series longitudinally thereof, and means for shifting said set of type-bars from a normal intermediate position in one direction through a single caseshitt space or distance to a final case-shift position, or in the other direction through a single case-shift space or distance to an intermediate case-shift position, or through two case-shitt spaces or distances to another final case-shift position. 7

3. In a front-strike typewriting machine, in combination, a non-shittable platen, a set of shiftable type-bars each swingable to strike the platen and having four types thereon arranged in a row or series. longitudinally thereof, and means for shifting said set of type-bars downwardly from a normal intermediate position for printing withthe second type from the topin the series to a. final case-shift position to print with the first or uppermost type in the series, or upwardly from its normal positionrto an intermediate case-shift position to print with the third type from the top in the series, or upwardly from its normal position to another final case-shiftposition to print with the lastor lowermost type in the series.

4. In a front-strike typewriting machine, in a combination, a non-shittable platen, a travel ng carriage therefor, an up-and-down shiftable type-bar segment capable of 0ccupying two finali positions and two intermediate positions, a set of type-bars pivoted on the segmentto shift therewith and each having four types thereon arranged inwa shifta-ble type-bar segment, a set of typebars pivoted on the segment to shift therewith. andieach havin four t. aes thereon ar-- ranged: in. a row or series longitudinally thereofi, a first shift-key torshifting the segment from an intermediate normal position in one. direction through a single caseshift: space or distance to a final case-shift position, a second shift-key for shifting the se ment from its normal position in the other direction through a single case-shift space or distance to an intermediate caseshiftposit-ion, a thirdshift-key for shifting the segment from its normal position in the. same direction that it is shiftable by said? second shift-key through two caseshiftispaces or distances to another final case-shift position, stops for the segment for-determining its final case-shift positons, and" movable stops controlled by the shift keys to determine the normal position and the intermediate. case-shift position of the segment. v

6: In a front-strike typewriting machine, in combination, a non-shiftable platen, a traveling carriage therefor, an up'-anddown shiftable type-bar segment, a set of typebars pivoted on the segment to shift there with and each having four types thereon arranged in a row or series longitudinally thereof, a first shittdrey'forshiittihg the segment downwardly from a normal intermediatev position for. printing with the second type from the top in the series to a final case-shitt position toprint with the first or uppermost type in the series, a second shiftkey for shifting the segment upwardly from its normal position to an intermediate caseshift position to print with the third type from the top in the series, a third shift-key for shifting the segment upwardly from its normal position to another final case-shift position to print with the last or lowermost type in the series, stops for the segment for determining its final case-shift positions when shifted by said first or by said third shift-key, a shift-key-controlled 'movable stop to determine the intermediate caseshift position of the segment, and shift-keycontrolled movable stops for stopping the SOQ-lflfifil? at its normal position upon its return from any of its case-shift positions.

In a front-strike typewriting machine,

in combination, a non-shiftable platen, a traveling carriage therefor, an'up-and-down shiftable type-bar segment, a set of typebars pivoted on the segment to shift therewith and each having four types thereon arranged in a row or series longitudinally thereof, a first shift-key for shifting the segment from an intermediate normal position in one direction through a single case-shift space or distance to a final case-shift position, a second shift-key for shifting the segment from its normal position in the other direction through a single case-shiftospace or distance to an intermediate case-shift position, a third shift-key for shifting the segment from its normal position in the other direction that it is shiftable by said second shift-key through two case-shift spaces or distances to another final case-shift position, stops for the segment for determining its final case-shift positions, movable stops controlled by the shift-keys to determine the normal position and the intermediate caseshift position of the segment, said segment when shifted upwardly being returnable by gravity to normal position, and means for automatically lifting said segment to normal position when shifted downwardly.

8. In a front-strike typewriting machine, in combination, a non-shiftable platen, a traveling carriage therefor, an up-and-down shiftable type-bar segment, a set of typebars pivoted on the segment to shift therewith and each having four types thereon arranged in a row or series longitudinally thereof, a first shift-key for shifting the seg ment from an intermediate normal posit-ion in one direction through a single case-shift space or distance to a final case-shift position, a second shift-key for shifting the segment from its normal position in the other direction through a single case-shift space or distance to an intermediate case-shiift position, a third shift-key for shifting the segment from its normal position in the same direction that. it is shiftable by said second shift-key through two case-shift spaces or distances to another final case-shift position, stops for the segmentfor determining its final case-shift positions, movable stops controlled by the shift-keys to determine the normal position and the intermediate case-shift position of the segment, said segment when shifted upwardly being returnable by gravity to normal position a spring for automatically lifting said segment to normal position when shifted downwardly, and means to render the segmentlifting spring ineffective to further lift the segment when the lifted segment reaches its normal position. 7

9. In a front-strike typewriting machine, in combination, in non-shiftable platen, a platen carriage therefor, an up-and-down shiftable type-bar segment, a setoftype ond type bars pivoted on the segment to shift therewith and each having four types thereon arranged in a row or series longitudinally thereof, a first shift-key for shifting the segment downwardly from a normal intermediate position for printing with the second type from final case-shift position to print with the first'or uppermost type in the series, a second shift-key for shifting the segment upwardly from its normal position to an intermediate case-shift position to print with the third type from the top. in the series, a third shift-key for shifting the segment upwardly from its normal position to another final case-shift position to print with the last or lowermost type in the series, stops for the segment for determining its final case-shift positions when shifted'by said first or by said third shift-key, a shiftkeycontrolled movable stop to determine the intermediate case-shift position of the segment, shift-key-controlled movable stops for stopping the segment at its normal position upon its return shift positions, said segment being returnable by gravity from its upper case-shift positions to its normal position, and means for automatically returning said segment from its lower case-shift position to its normal position.

10. In a front-strike typewriting' machine, in combination, a non-shiftable platen, a platen carriage therefor, an up-and-down shiftable type-bar segment, a set of'typebars pivotedon the segment to shift therewith and each having four types thereon arranged in a row or series longitudinally thereof, a first shift-key for shifting the segment downwardly from a normal intermediate position for printing with the seefrom the top in the series to a final case-shift position to print with the first or uppermost type in the series, a second shift-key for shifting the segment upwardly from its normal position to an intermediate case-shift position to print with the third type from the top in the series, a third shift-key for shifting the segment upwardly from its normal position to another final-case-shift position to print with the last or lowermost type'in the series, stops for the segment for determining its final case-shift positions when shifted by said first or by said third shift-key, a shiftkey-controlled movable stop to determine the intermediate case-shift position of the segment, shift-key-oontrolled movable stops for stopping the segment atits normal position upon its return from any of its caseshift positions, said segment being returnable by gravityfrom its upper case-shift the top in the series to a from any of its case-' ositions to 1ts normal position, means including a segment-lifting spring for automatically returning said segment from its lower case-shift positionto its normalposition, and stop means including an abutment for rendering the segment-lifting spring ineffective to further lift the segment when the segment has reached its normal position.

11. In a front-strike typewriting machine, in combination with a platen, an up-and down shiftable type-bar segment, a combined stop-device and normally effective lockingdevice for stopping and holding the segment at a normal intermediateposition, a firstshiftdzey which when dcpressed first renders said locking-device ineffective and then shifts the segment downwardly, a second shift-key which when depressed first renders said locking-device ineffective and then shifts the segment upwardly, and a third shift-key which when depressed first renders said locking-device ineffective and then shifts the segment upwardly through a greater distance than it is shiftable by said second shift-key;

12. In a front-strike typewriting machine, in combination with a platen, an up-anddown shiftable type-bar segment, a combined stop-device and normally effective lockingdevice for stopping and holding the segment at anormal intermediate position, a first shift-key-which when depressed first renders said locking-device ineffective and then shifts'the segment downwardly to a final case-shift position, a second shift-key which when depressed first renders said locking-device ineffective and then shifts the segment upwardly to an intermediate case-shift position, and a third shift-key which when depressed first renders said locking-device ineffective andthen shifts the segment upwardly to a greater extent than it is shiftable by said second shift-key and to a-final upper case-shift position, stops for determining the final case-shift positions of the segment, and a shift-key-contro-lled movable stop for determining the intermediate caseshift position of the segment.

13. In a front-strike typewriting machine, in combination with a platen, a type bar segment shiftable up and down from a normal intermediate position to upper and lower case-shift positions and automatically returnable from its case-shift positions to its normal position, a combined stop-device and normally effective lockingdevice for stopping and holding the segment at its normal or intermediate position, said device comprising upper and lower spaced and partly overlapping abutment shoulders connected together to move as a unit, a pin or projection on the segment to strike against said upper abutment shoulder for stopping the segment upon its return to normal position from lower case-shift position and striking against said lower abutment shoul der for stopping the segment upon its return to normal position from'upper caseshift position and to engage between the overlapping portions of said abutment shoulders to lock the segment at normal position, a first shift-key which when depressed, first moves said device to enable the segment to be shifted downwardly and then byfurther movement shifts the segment downwardly, a second shift-key which when depressed first moves said device to enable the segment to be shifted upwardlv and then by further movement shifts the segment upwardly, and stops for determnr mg said upper and lower case-shift positions of the segment.

14. In a front-st'ike four-type type-bar typewriting machine, in combination, a non-shiftable platen, an up-and-down shiftable type-bar segment, a combined stopdevice and locking-device for the segment, said device comprising three abutment-forming stop shoulders connected together to move as a unit, two of said shoul ders being overlapped in spaced relation and the third shoulder being at a different level from said overlapped shoulders, apin or projection carried by the segment to engage between said overlapped shoulder for locking the segment at a normal interme diate position of the segment, said upper overlapped shoulder being engagcable by said pin to stop the segment upon its return to normal position from a lower case shift position, and said. lower overlapped shoulder being engageable by said pin to stop the segment upon its return from an upper case-shift position, and said third shoulder being engageable by said pin to stop the segment at an intermediate caseshift position, a first shift-key which when depressed first moves said device to cause one of said overlapped suouldcrs to clear said pin and then shifts the segment in one direction to a final case-shift position, a second shift-key, which when depressed first moves said device to cause said other over lapped shoulder to clear said pin and then shifts the segment to an intermediate caseshift position with said pin against said third shoulder, a third-shift-key which when depressed moves said device to cause one/of said overlapped shoulders and also said third shoulder to cl ar said pin and then shifts the segment to a final case-shift position beyond its said intermediate caseshift position, andstops for determining the final case-shift positions ofthe segment.

15. In a front-strike four-type type-bar typewriting machine, in combination, a nonshiftable platen, an up-and down shiftable type bar segment, a combined stop-de vice an d locking-device for the segment, said device comprising three abutment-forming stop shoulders connected together to move as a unit, two of said shoulders being overlapped in spaced relation and the third t machine comprising a vmounted in the main therefrom, a type-bar segment carr ed by shoulder being at a different level from said overlapped shoulders, a pin or projection carried by the se ment to engage between said overlapped sio'ulders for locking the segment at a normal intermediate position of the segment, said upper overlapped shoulder being engageable by said pin to stop the segment upon its return to normal position from a lower easeshift position, and said lower overlapped shoulder being engageable by said pin to stop the segment upon its return from an upper ease-shift position, and said third shoulder being engageable by said pin to stop the segment at an intermediate case-shift position, a first shift-key which when depressed first moves said device to cause one of said overlapped shoulders to clear said pin and then shift the segment in one direction to a final caseshift position, a second shift-key which when depressed first moves said device to cause said other overlapped shoulder to clear said pin and then shifts the segment to an intermediate case-shiftposition with said pin against said third shoulder, a third shift-key which when depressed moves said device to cause one of said overlapped shoulders and also said third shoulder to clear said pin and then shifts the segment to a final case-shift position beyond its said intermediate case-shift position, and stop- 1 shoulders on said device to stop the segment at its final case-shift positions.

16. A front-strike type-bar typewriting main frame, a platen, a platen carriage mounted to travel on the main frame, an escapement mechanism for the carriage mounted on the main frame, a vibrating ribbon-guide mounted on the main frame, a subsidiary frame detachably mounted in the main frame for removal therefrom, a' type-action mounted on the subsidary frame and comprising key-levers, an escapement-operating device having a universal member operable by said keylevers, and mounted on the main frame, and a ribbon-guide-vibrating device mounted on the main frame and having a universal member operable by said key-levers, said key-levers being Withdrawn from said universal members by Withdrawing the subs sidary frame from the main frame.

17. A front-strike typewriting machine iaving, incombination, a main frame, a platen, a platen carriage mounted to travel on the main frame, an escapement mechanism for the carriage mounted on the main frame, a ribbon-vibrator mounted on the main frame, a subsidiary frame detachably and. shiftable upon the subsidiary frame, a type-action mounted on the subsidiary frame, and including type-bars pivoted on the segment to shift therewith and also inframe for removal eluding type-key-levers pivoted at their rear ends'and having portions extending downwardly from their pivot point-s, an'esoapement-meohanism-operating by said downwardly-extending portions of the key-levers, and a ribbon-vibrator-oper ating device actuable by said downwardlyextending portions of the key-levers.

18; A front-strike"typewriting machine having, in combination, a main frame, a platen, a platen carriage mounted to travel on the main frame, an escapement mechanism for the carriage mounted on the main frame, a ribbon-vibrator mounted on the main frame, a removable subsidiary frame detachably mounted in the main frame, a type-bar segment carried by and shiftable upon the subsidiary frame, 'a type-action mounted on the subsidiary frame, and including type-bars pivoted'on the segment to shift therewith, said type-action also includ ing type-key-levers, a shift-key-lever for shifting the segment mounted on the sub, sidiary frame, a device for operating the escapement mechanism from the type-action mounted on the main frame and disconnectible from the type-action by the removal of the subsidiary frame from the main frame, and a device for vibrating the ribhon-vibrator from the type-action mounted on the main frame and disconnectible from the type-action by the removal of the subsidiary frame from the main frame.

19. A front-strike typewriting machine having, in combination, a main frame, a nonshiftable platen, a platen carriage mounted to travel on the main frame, an escapement mechanism for the carriage mounted on the main frame, a ribbon-vibrator mounted on the main frame, a subsidiary frame detaohably mounted in the main frame for removal through the bottom thereof, a shiftable type-bar segment mounted on the subsidiary frame, a set of type-bars pivoted on the segment to shift therewith. and each having four types thereon, type-keys on the sub sidiary frame to operate the type-bars, shiftkeys for the segment on the subsidiary frame, and mechanism for operating the escapement mechanism and the ribbonvibrator from the type-keys'and so arranged that removal of the'subsidiary frame will break the operative relation between the type-keys and the escapement mechanism and the ribbonvibrator, and such operative relation will again be established upon replacing the subsidiary frame through the bottom of the machine.

20. A front-strike typewriting machine having, in combination, a main frame, a nonshi'ftable platen, a platen carriage mounted to travel on the main frame, an escapement mechanism for the carriage mounted on the main frame, a ribbon-vibrator mounted on the main frame, a removable subsidiary device actuable loo frame detachably mounted in the main frame, a type-bar segment shiftably mounted on the snbsidiaryframe and capable of occupying vo final positions and two intermediate positions, a set of type-bars pivoted on the segment to shift therewith anol each having four types thereon, type-keys on the subsidiary frame to operate the type-bars, shift-keys on the subsidiary frame for shifting the segment from normal position to any selected one of three caseshift positions, stops onthe subsidiary frame for determining the final positions of the segment, movable stops on the subsidiary frame controlled by the shift-keys for determining the intermediate positions of the segment, and mechanism operated by the type-keys for operating the escapement mechanism and the ribbon-vibrator.

21. A front-strike typewriting machine having, in combination, a main frame, a non-shiftable platen, a platen carriage mounted to travel on the main frame, an escapement mechanism for the carriage mounted on the main frame, a ribbon-vibrator mounted on the main frame, a re movable subsidiary frame detachably mounted in the main frame, a type-bar seg- Vmcnt shifta-bly mounted on the subsidiary frame and capable of occupying two final positions and two intermediate positions, a set of type-bars pivoted on the segmentto shift therewith and each having four types thereon, type-keys on the subsidiary frame to operate the type-bars, sl1ift-keys on the subsidiary frame for shifting the segment from normal position to any selected one of three case-shift positions, stops on the subsidiary frame for determining the final positions of the segment, movable stops on the subsidiary frame controlled by the shift keys for determining the intermediate positions of the segment, and mechanism on the main frame operated by the type-keys for operating the escapement mechanism and the ribbon-vibrator.

22.11] a typewriting machine, in combination, a main frame, a platen, a platencarriage mounted to travel on said main frame, escapement mechanism for said carriage, a ribbon-vibrator mounted for vertical movement on said main frame, a sub sidiary frame detachably connected with said main frame for removal therefrom, a type bar segment mounted for vertical movement 011 said subsidiary frame, a type-bar guide mounted on said segment to project.upwardly immediately to the front of the ribbonyibrator, key-levers pivoted in said subsidiary frame, and key-lcverctuable universal members for operating said escapement mechanism and said ribbon-vibrator,

respectively, the operative connection between sald keydevers and said universal members being bicki by removal said subsidiary frame and being reestablished by inserting the subsidiary frame into the main frame. 7 i

23. In a typewriting machine, a platen, a platen-marriage, a main frame on which said carriage travels, a set of type-bars, a type-U bar segment in which said type-bars are pivoted, key-levers for actuating said type bars, and a subsidiary frame in which said segment and liey-lerers are mounted, said subsidiary frame comprising side members having uprights adjacent the rear ends thereof, a crossmember connecting said up rights, and a key-lever pivot-rod beneath said cross-member. V

In a typewriting machine, a platen, a platen-carriage, a main frame on which said carriage travels, a set of type-bars, a type bar segment in which said typebars are pivoted, key-levers for actuating said type bars, and a subsidiary frame in which said segment and key levers are mounted, said subsidiary frame comprising side members having 7 uprights adjacent the rear ends thereof, a cross-member connecting said up-' rights, a key-lever pivot-rod beneath said cross-member, and a cross-member joining said side members at the lower rear portion of the frame.

In a typewriting machine, a platen, a platen-carriage, a main frame on which said carriage travels, a set of type-bars, a type-bar segment in which said type-bars are pivoted, key-levers for actuating said typebars, and a subsidiary frame in which 'said segment and key-levers are mounted,

said subsidiary frame comprising side membors having uprights adjacent the rear ends thereof, a cross-member connecting said up rights, a lre -lever pivot-rod beneath said cross-member, a cross-member joining said side members at the lower rear portion of the frame, and a key-lever com b joining said side -members at their forward ends and having its teeth. extending downwardly.

26. In a typewriting machine, a platen,v

a platen-carriage, a main frame on which said carriage travels, a set of type-bars, a type-bar segment in which said typebars are pivoted, key-levers for actuating said type-bars, and a subsidiary frame in which said segment and key-levers are mounted, said subsidiary frame comprising side members ha ing uprights adjacent the rear ends thereof, a cross-member connecting said up rights, a keydever pivot-rod beneath said cross-member, a cross-member joining said side members at the lower rear portion of the frame, a key-lever comb joining said side members at their forward ends and having its teeth extending downwardly, and a cross-memberjoining the side members at their lower edges and near their front ends.

BFJRNHAM STIGKIFIEYZ