US1382790A - Typewriting-machine - Google Patents

Description

E. G. LATTA.

TYPEWRITING MACHINE.

APPLICATION FILED IuLY I8, Isls.

m6111011 June 28, 1921.

3 SHEETS-SHEET I.

.4- .,h .mw l

l//llllll/lll//Am v E. G. LATTA.

TYPEWRITING MACHINE.

APPLICATION FILED JuLY1s,|91a.

Patented June 28, 1921.

3 SHEETS-SHEET 2.

E. G. LATTA.

TYPEWRITING MACHINE.

mug/@ A TTORJIEY',

vUNl'rlazD STATES- PATENT OFFICE.

Emitir e. LATTA, or sYiiAcUsE, NEW Yonai.

l TYPEWRITING-MACHINE.

Specification of Letters Patent. Patented June 28, 1921.

Application led July 1S, 1918. Serial No. 245,468. f

' To all whom it may conce/m:

chines, of which the following is a specifica# tion.

This invention relates to improvements in portable typewriting machines of that kind having frames composed. of parts which are relatively movable for collapsing `or condensing the machine into a more compact form for convenience in shipping and carrying the machine from place to place.

One objectl of the invention is to produce a thoroughlypractical and desirable visible writing, typewriting machine, which is of improved construction whereby a machine having a full complement of forty-two typebars and finger keys arranged in four banks and equipped with the other features demanded in typewriters of the most approved and up to date design can be materially reduced in dimensions both lengthwise and in height, adapting it to be placed in a smaller carrying case than the usual portable typewriters having only three banks of keys. Other objects of the invention are to so construct the machine that the act of lowering the machine from the operative to a recumbent position automatically shortens it; also to improve several of the` operative parts so that they do not require any attention or manipulation when condensing the machine and restoring it to its operative condition; and also to improve the construction of typewriing machines in other respects here-v inafter l i escribed and set forth in the claims, with a View to speed, ease of action and economy in manufacture.

In carrying out this invention the usual traveling marriage with its rotatable platen is mounted on a main frame or support which rests on the table or supporting surface and isv adapted to be tipped or lowered from an inclined operative position to a recumbent position, while the t pe-bars and their actuating finger keys an connections are mounted on an auxiliary frame which is adapted to move or shift rearwardly on the main frame to shorten the machinewhen lowering the main frame.r Preferably, the rear end of the main frameis sustained in operative position by a4 support which is movable to lower the frame and which is operatively connected to the auxiliary frame so as to shift the latter lengthwise on the main frame by the simple movement of said support for raising and lowering the man frame. y

In the accompanying drawings:

Figure 1 is a partiallyl complete longitudinal sectional elevation of a typewri'ting machine embodying the invention, showing the parts in position for use.

Fig. is a fragmentary side elevation of the auxiliary frame and folding rear support of the machine showing the support in an intermediate position.

Fig. 3 is a section'through one side of the vframes of the machine on line 3 3, Fig. 2.

Fig. is a side elevation of the' machine partly 1n section, showing themachine colla sed.

ig. 5 is a side elevation of the auxiliary frame and parts mounted thereon.

Fig. 6 is a front sectional elevation of the frame on line 6 6, Fig. 1. l

Fig. 7 is a section on line 7 7, Fig. 8.

Fig. 8 is a transverse sectional elevation of the machine on line 8 8, Fig. 1.

Fig. 9 is' an elevation of the actuating link for the ribbon vibrator and carriage escapement.

' 10 is a plan view of the same.

Fig. 11 is a detail section on line 11-11,

'Ilhe typewriter shown in the drawings comprises, as usual, linger keys A arranged 1n banks or rows, preferably in four banks at the lower front portion of the machine, a paper platen B journaled to rotate on a transversely traveling carriage C at the upper rear portion of the machine, and typebars D pivoted in a segmental or arcuate arrangement between the platen and the finger keys and lower than the platen so as to print at the front side of the platen. Some of the other usual parts or devices of the machine, as one of the ribbon spools E, the ribbon vibrator F, the paper table G, the carriage escapement H and the driving spring drum I for the carriage are included ,in the drawings to show their relative arrangement in the machine and indicate theV positions of these parts in the operative and collapsed conditions of the machine. This inventionv is not, however, necessarily relstricted to the particular construction of these and other parte or devices of the machine shown in t e drawings.

rlfhe trame of the machine which supports the various operating parts or devices of the typewriter comprises two parts'herein called respectively the main frame and the auX- iliary frame, which latter is movable forwardly and rearwardly on the lnain frame for shortening the machine. The platen carriage C and associated parts, carriage escapement H, ribbon spools E, and ribbon vibrator F and other parts are mounted on the main frame, while the linger keys A, type-bars D and their operating connections are carried by and are movable with the auxiliary frame. As shown, the main frame comprises two opposite side plates 20 connected by front and- rear cross bars 21 and 22 and by a carriage track bar 23 on which the carriage is adapted to travel crosswise on a ball bearing or other suitable guide or track 24, and the auxiliary frame consists of opposite side plates 25 connected by front and rear cross bars 26 and 27. The auxiliary frame can be made in a single casting but the side plates of the main frame are preferably made separate of sheet metal shaped by suitable dies and aresecured to the ends of the three cross bars by screws, (not shown). rl`he auxiliary ramefis arranged to move a limited distance forwardly and rearwardly inside of the main frame, or be-` tween the side plates thereof and is shown as provided with suitc ble guide tongues 28 along the outer sides of its side plates which enter and are adapted to slide in grooves 29 in the inner facesof the side plates of the main frame.

30 represents a pair of feet at the ends of the front cross bar 2l for supporting the front portion of the machine. rl`hese feet are preferably made of rubber or other yielding material and may be ofany suitable form.

3l represent a pair offolding legs that support the rear portion of the machine in an elevated operative position. These legs are pivoted to the side plates of the main frame by shoulder pivot screws 3l and are rigidly connected to each other by a cross rod 32 which causes the two legs to swing in unison. The lower ends of the legs are providedwith rubber feet or cushions 33 of any usual or suitable form. Each leg has an upwardly and forwardly projecting extension 34 provided with a rigid stud 35 which projects inwardly into and is adapted to slide up and down in a ,slot 36 in the ad- 'acent side plate of the auxiliary frame.

en the legs 31 are swung forwardly from the supporting position shown in Fi 1, the rear end of the machine is lowered rom its elevated operative position and at-the same time the engagement of the studs 35 in the slots 36 shifts'or movesthe auxiliary frame rearwardly in the main frame. .Thus, the act of lowering the rear portion of the masuch as the chine also shortens the machine lengthwise about two inches. Preferably, the side plates of the main iframe are provided in their inner sides with segmental circular recesses 37 in which the extensions 34- of the legs 31 swing, the upper portions of said recesses intersecting the guide grooves 29 for the tongues 0f the auxiliary frame. The tongues 28 of the auxiliary frame are also interrupted adjacent the slots 36 to permit the movement of the leg extensions but the tongues are long enough to bear for a considerable distance in theA grooves 29 in iront and in rear of the recesses in both positions of the auxiliary frame. 'The slots 36 in the auxiliary frame are epen at their lower ends to admit the studs 35 in assemblinglthe parts of the frame and the side plates 25 are preferably thickened around the slots to strengthen the plates'. All of the operative parts of the machine supported by the main and auxiliary frames can be assembled and adjusted on said frames before the frames are connected to each other. To connect the main and auxiliary frames the front connecting bar 21 of the main frame is detached and the supporting legs 31 are swung to the .rear so that the auxiliary frame can pass over the studs 35 on the legs. v'lihe tongues 28 are then inserted into the front ends of the grooves 29 in the main frame. and the auxiliary Jframe moved te the rear until the studs 35 can enter the lower ends of the slots 36. rlhen the vlegs 3l are swung forwardly to the position shown in Fig. 4 with the rear end of the auxiliary frame resting against the rear cross bar 22 of the main frame. The front cross bar'21 of the main frame is then secured in position and the machine is complete. l/Vhen the legs 31 are folded the machine will rest in a recumbent position as shown in Fig.. 4 with the lower edges of the main frame and the rear cross bar 27 of the auxiliary frame bearing on the table top or supporting surface for the lio inches when the machine is in operative po- Y sition.

The -rear cross bar 27 of the auxiliary frame is preferably of inverted U-shape in cross section except at its ends which abut against the inner faces of the side plates 25 and are made with holes for the passage of the tie rod 37 which extends along the channel. of the U-bar. This tie vrod passes through holes in the side plates of the auxiliary frame and has a slotted head 38 at one end and screws into a headed sleeve at the other end. The side plates 20 of the main frame are made with slots 39, Fig. 4, to receive the projecting head and sleeve of the tie rod 37 when the machine is in the operative position, the head of the rod at one end and the head of the sleeve at the other end bearing against the outer faces of the side plates of the main frame and binding the side plates of the main frame and auxiliary frames firmly together at this point. The tie rod 37 is adjusted by screwing it into the sleeve just far enough to hold the side plates of the two frames in contact when in the operative position and permit the ends of the rod and sleeve to slide'into and out of the slots 39 or seats in the main trame when coln lapsing the machine and restoring it to its operative position. '.lhe extensions of the legs 31 iit betwenthe adjacent side plates of the main and auxiliary frame close enough to prevent side play ormovement when the carriage is set back Jfor a new line, and thus prevent any waobling or side motion of the ma chine. ln the operative position of the parts the weight of the rear portion of the machine, acting through the legs 31, studs 35,

and slots 36 holds the auxiliary frame forwardly with stop shoulders or parts 40 at its lower portion against the front cross bar 21 of the main frame and with the lower edges of its side plates bearing on the upper face of said cross bar. When the machine is eol- -lapsed the rear ends of the side plates of the auxiliary frame bear against the rear cross bar 22 of the main frame with the then lower sides of the ends of the legs 31 resting on the table top, as shown in Fig. 4. The auxiliary frame is thus retained in irm engagement with stop parts on the main frame by the weight of the machine in; both the operative and collapsed conditions of the machine. The side plates of the main frame are cut away at 41 to permit the ends of the legs 31 to swing up to the position shown in Fig. 4 ,to permit the insertion of the operators thumbs for pushing the ends of the legs downwardly to start the auxiliary frame from its inoperative to its operative position.

42 represents the type bar segment or Support on `which the type bars D are pivoted in the usual segmental or arcuate arrangement.

The segment is pivoted by downwardly projecting lugs 43 thereon to the rear ends of a lower pair of supporting links 44 and by out- 'wardly projecting lugs 45 at its upper ends to the rear ends of an upper pair of supporting links 46. The lower links 44 are rigidly connected at their front ends to a cross roc shaft 47 suitably jour-naled in bearing bosses 47 a on the side plates of the auxiliary frame and the upper linksk 46 are'pivoted at their' front ends on the inner ends of the studs 48 which are screwed into and project inwardly from bearing bosses 48a on. the side.

Preferably, the type-bar segment is slotted to receive the pivot ends of the typedoars andl their fulcruni wire in the usual manner, but the .type-bars are preferably bent or ot angle form at their middle portions, as vshown in Fig. l to enable the type-bars at the ends of the segment to clear the track-bar 23 when the machine is collapsed. 50 represents the type-bar back stop which may be of the yusual curved form and made of a metal strip with a lining of felt. This back stop is secured at its ends to supporting rods 5l which are rigidly connected to and project forwardly from the lugs 45 at the ends of the segment. rlhese supporting rods 5l are also shown as being bent or' of angle form to clear the track-bar 23 when the machine is collapsed and to clear the links connecting the typebars to the linger lreys.

52, Fig. l, represents a stop projecting rearwardly from the middle portion of the segment andadapted to strike an adjustable lstop screw 53 seated in a lug on the rear cross bar27 of the auxiliary frame for limiting the upward shifting movement ot the segment to the exact distance required. The segment is also provided `at its rear side with upwardly projecting posts or lugs 54, the lower ends of which are adapted to rest on stop lugs 55 projecting -forwardly from the cross bar 27 to limit thedownward movement of the segment. rl`hese stops are shown in engagement in Figs. 7 and 8.

The key action shown is substantially like that disclosed in my coending application, Serial No. 123,160, filed 1dept. 30, 1916. Each finger key stem is `provided with legs pivotally connected to the forwardly projecting arms of a pair ofbell crank levers 56, 57, lthe upwardly projecting arms of which are pivoted to a connecting rod or link 58. Each of these links is connected at its rear end by a link 59 to one of the type-bars. The links 58 are of several different forms, the rear ends of those at the side portions of the segment extending upwardly to dilerent elevations for properly locating the links 59 connectin them with the type-bars.

60 represents the universal bar which is a'rraned above and curved concentrically with the type-barsegment, in position for the type bars to stri-ke the front edge of the uni-- versal bar during the last portion of their movements` to the platen. The universal bar is suitably supported so as to shift with the justed to take up wear and, are locked in adjusted positions by suitable lock nuts. The universal bar is retained in the upright posi-l tion shown with its front .edge parallel with the plane of the type-bar pivots and normally slightly in front of said plane by means of a forwardly extending arm 64 rigidly secured to the center of the universal bar land having its front end arranged to slide in a guide opening in a lug or part 65 on the lower middle portion of the back stop 50.

66 represents the space bar which is mounted at its central portion on a lever 67 which is fulcrumed preferably on the pivot wire 68 for the front bell crank levers 56 that support the finger keys and is pivoted at its rear end to the front end of a bell crank lever 69 by a joint which is loose enough to permit a limited movement of these levers. The lever 69 has an upright arm which engages a depending lug 70 on the forwardly projecting arm 64 of the universal bar so that the universal bar is moved rearwardly when the space bar is depressed. The upper end of the upright arm of the lever 69 is twisted or made wide enough to always insure contact with the lug 70. The forwardly projecting arm of the universal bar passes between the two central type-bars and does not interfere therewith and this bar is so long that it causes very little friction in its guide 65. Its great length reduces the effect of any looseness caused by wear, so that the universal bar as a whole is ada ted for long service. The lug 70 is of su cient length to insure actuation of' they universal bar by the space bar in either case printing posltion of the type bar segment, with which the universal bar shifts. While, by this construction the universal bar is actuated by the depression of the space bar, the space vbar is not moved when the `universal bar is actuated by the type-bars.

71 represents an arm pivoted to the central portion of the rock shaft 62 andv projecting upwardly therefrom for actuating the carriage escapement H and ribbon vibrator F. As shown, the lower end of the arm 71 is suitably pivoted in a slot inan enlarged central part of the rock shaft so that the arm can swing forwardly relatively to the rock shaft.

The lower end of the arm is slotted to receive.

a wire spring 72 which is coiled around the pivot for the arm and acts to normally hold recargo the armupright against the rear end of the slotin the rock shaft. The rearward movement of the arm 71 on the rock shaft is thus limited and the arm will rock forwardly with the shaft for operating the ribbon vibrator andcarriage escapement when the 'shaft is rocked by the actuation of the universal bar, but the'arm is adapted to fold or swing 'forwardly relatively tothe rock shaft as hereinafter explained when the machine is co1- lapsed.

The ribbon vibrator F is suitably mounted to vibrate the ribbon to cover and uncover the printing point at the front of the platen and it may be of any suitable construction adapted to properlyY support and guide the ribbon. The vibrator shown is pivotally supported at 74 between the pro- 'ecting front ends of two spaced brackets 5 which are suitably secured on the underside of the track bar 23. An escapement trip lever 76 is shown pivoted between the projecting rear ends of these brackets 75. The trip lever has a rearwardly projecting arm connected by a rod 77 to the escapement lever and has a depending arm pivoted to the rear end of a link 78 which extends beneath the track bar 23 and is pivoted at 'its front end to the lower end of 'the ribbon vibrator. rlhis link preferably consistsl of two parallel bars which are secured together and spaced apart by a loop or U-shaped connecting piece 79 located in front of the track bar and in front of the upper' end of the upright arm 71 which engages the loop for moving the link to actuate the vibrator and escapement trip lever. The depending arm of the trip lever 76 is forked ,and straddles the two bars of the link 78. When the universal bar is moved rearwardly by the impacts of the type-bars or the de ression of the space bar, the upper end of t e arm 71 swin s forwardly and bearing against the loop 9 moves the link 78 and depresses the rear arm of the trip lever 76 to tripthe escapement and at the same time swings the upper end of the ribbon vibrator back to cover the printing point. Thefront end of the loop 7 9is deep enough to be acted on by the arm 71 in either case position of the segment and the loop is far enough in front of the track bar 23 to permit the arm 71 to move to uper case position without striking the track ar. `B making the link 78 of spaced bars andfor ing the depending'arm of the trip lever 76 the arm 71 is permitted to move rearwardly relatively to these parts when the machine is collapsed. At such time the upper rear edge of the arm 71 strikes the lower front part of the track bar 23and is swung forwardly and Vdownwardly and when the rear end of the machine is lowered the lugs 43 of the type-bar segment strike the table top and shift the segment to its upper case position, when the arm 71 will be in the position shown in Fig. 4, bearing Tagainst the underside of the track: bar.

hen restoring the machine to its operative condition the restoring spring for the arm 71 causes the arm to ride along the underside of the track bar and assume its normal upright position in engagement with the loop. 79. The described connections between the universal bar and the carriage escapement and ribbon 'vibrator requires no attention but are moved from and restored to operative position automatically when collapsing the4 machine and restoring it to the operative condition. The s rings other than that Afor the arm 71, used or restoring the several parts to theirI normal positions y are not vessential to an understanding of the invention are omitted from the drawings for the sake of simplicity.

W hen the typewriter is in position for use the front of the machine is supported by the front pair of rubber feet 30. on the main frame and the machine tilts on the rear edges of these feet when lowering the same, but when the machine is in its inoperative recumbent position it does not rest on these feet but at such time rests on the base or lower edges of the side plates of the main -frame, thus relieving both the front and rear rubber feet or cushions from the weight of the machine. The lower edges of the side l, plates of the main frame extend in the direction indicated by the lines y-z, which in the 4operatiife position of the frameinclines upwardly and rearwardly from a point well in front of the'center of gravity of the machine are located substantially beof the machine. All of the operative parts tween the plane represented by this line and the parallel plane indicated by the line @v which in the operative condition of the machine, extends upwardly and rearwardly from a point close to the finger keys and space bar to the highest part of the platen. In the collapsed condition of the machine these planes are horizontal' as shown in Fig. 4. The auxiliary frame slides parallel with the lines fui-w, y--z and none of the operative parts of the machine provjects` outside; of said planes when the machine is collapsed. Since the rear supporting legs swing forwardly and rearwardly and are rigidly vconnected to each other, no

vlateral movement of the machine can cause them to fold accidentally and the folding .legs mounted and connected as explained provide a rigid, stable Support for the machine.l

8O represents the usual scale bar, 81 the carriage rack-bar, 82 the rack-bar feed pinion` and 83 the feed roll release bar. These parts together with the other parts of the machine above mentioned are shown in the drawings to show their position and make it 'rear end, a pair of'pivotally connected rear `of the frame and. permit the side plates to' clear that the various parts of the machine are located within the space bounded by the planes represented by the lines 'w---Jy-a I claim las my invention 1. In a typewriting machine, a frame having fixed front supports and adapted to have its rear end lowered by tipping on said supports, a pair-of pivoted rear supports for said trame arranged to swing in planes parallel with, the sides of the frame, and means for limiting the movement of the rear supports on their pivots.'

2. ln a typewriting machine, a frame having fixed front supports and adapted 'to tip on said supports to lower its rear end, a pair or pivotally mounted rear supports acting to hold the rear of said frame in an elevated position, and adapted to swing above the base of the rameand permit the frame to rest on the supporting surface for the machine. l

3. ln a typew'riting` machine, a frame having side plates and fixed front supports and adapted to tip on said supports to lower its 9o supports acting to hold the rear of said frame in an elevated position, and ada ted to swing forwardly inside of the side p ates rest on the table.

4, In a typewriting machine, a frame having front supports in xed position thereon, and rear supports movably connected to said frame and acting with the front supports to hold the machine in operative'position, 100 and adapted to be moved to permit the machine to tip on. the front supports and rest by parts of the frame on the table top when the rear supports are movedv out of support' ing posltlon.

5. n a typewriting machine, a main frame vhaving iixed front supports on which it is adapted to tip to lower its rear end, and a pair of opposable rear su ports pivotally connected to the frame an connected so as to swing to ether on their pivots to permit the rear en of the machine to be lowered.

6. In a typewriting machine, a main frame, a relatively movable auxiliary trame supported thereby, and a rear supportmovably mounted on the main frame and operatively connected to the auxiliary frame to l l shift the latter on the main frame.

7. In a typewriting machine, a main frame having fixed front supports onVwhich the' 120 v:trame is adapted to tip, an auxiliary frame movably mounted on the main frame, and a movable rear support for the main frame that acts to shift the auxiliary frame on the main' frame when the supportV is moved rela- 125 tive to the main frame.4

` 8.v In a typewriting machine, a fram structure which sup orts the operative mechanism of the mac ine and comprises a main frame having 'fixed front supports and 130 a rear support which is movable for raising and lowering the rear portion of the machine, andan auxiliary frame mounted on the main frame to move forwardly and backwardly thereon.

9. In a typewriting machine, a main frame having a platen carriage mounted thereon, supporting means for said main frame operable to lower the rear end of said main frame and an auxiliary frame carrying both a keyboard and type-bars and movably connected to the main frame vwhereby the auxiliary frame can be moved in substantially upright position forwardly and backwardly on the main frame.

10. ln ya typewriting machine, a main frame, a platen carriage mounted thereon, supporting means for said main frame operable to lower the rear end of said main' frame, type-actuating linger keys, pivoted type bars, an auxiliary frame carrying said linger keys and type-bars and mounted to slide on the main frame with the linger keys and type bars yrelatively to the platen carria e for condensing the machine.

11. n a typewriting machine, a main frame, a platen carriage mounted thereon, supporting means for said main frame operable to lower the rear Vend of said main frame, type-bars and ngerkeys at all times operatively connected, an auxiliary frame carryingy said type-bars and mounted to move on the main frame in substantially upright position with the type-bars relatively to the platen carriage for condensing the `machine without changing the operative rebeneath the platen carriage forcondensing the machine. i

13. ln a typewriting machine, a main frame, a platen carriage mounted thereon, supporting means for said main frame operable to lower the vrear end of said main `frame, type-bars and actuating keys therefor inflixed operative relation, an auxiliary frame carrying said type-bars and keys and mounted to slide rearwardly with the typebars and keys relatively to the platen carriage for condensing the machine.

14. ln a typewriting machine, a main frame, an auxiliary frame supported thereby, and a frame support which is movable for moving'theauxiliary frame rearwardly on the main frame and for lowering the rear part of the main frame. A

15. ln a typewriting machine, a main frame, an auxiliary frame mounted thereon to move forwardly and rearwardly, and means for shifting said auxiliary frame on the'main frame, the weight of the machine acting on said means to retain the auxiliary frame at either end of its movement.

16. In a typewriting machine, a main frame, an auxiliary frame mounted thereon, and a frame support which is movable for lowering the rear part of the main frame and simultaneouslyy moving the auxiliary frame thereon.

17. ln a typewriting machine, a main frame supporting carriage, an auxiliary frame movable on the main frame and supporting a shiftable type-bar segment, and a frame support which is movable for lowering the two frames until the ty-pe-bar segment strikes the supporting surface for the machine and is caused thereby to move into shifted position. v

18. ln a typewriting machine, a main frame, an auxiliary frame movably mounted thereon, and a frame support movable for moving the auxiliary frame forwardly and rearwardly on the main frame and for lowering the rear ends of both frames.

19. In a typewriting machine, a main frame having fixed front supports on which it is adapted to tilt, and pivoted rigidly connected rear supports that fold to permit the rear`end of the main frame to be lowered.

20. Inv a typewriting machine, a main frame, an auxiliary frame movably mounted thereon, and pivoted supports `for the main frame that are operatively connected to the auxiliary frame for moving the latter on the main frame. y

21. In a typewriting machine, a tiltable main frame, an auxiliary frame located within the main frame to move forwardly and rearwardly therein, and a movable support forthe main frame operatively connected to the auxiliary frame whereb the auxiliary frame is moved von the main rame when said support is moved to tilt the main frame. i

22. In a typewriting machine, a tiltable main framehaving front supports in front of its center of gravity, and a base line extending upwardly and rearwardly 'from a point above the base of said supports when in operative position, and a movable rear support whereby the front of the machine maybe tilted olf of its front supports and said frame caused to rest on said base line when in operative position.

23. ln a typewriting machine, a main frame, an auxiliary frame mounted to move forwardly and rearwardly thereon, stops to limit the movement of the auxiliary frame in both directions, and means for shifting the auxiliary frame on the main frame, the

weight of the machine acting on said means to hold the auxiliary frame against a stop in either of its two positions.

24. In a typewriting machine, a tiltable main frame having front supports, and side plates with segmental recesses, and folding lrear supports having upwardly extending arms arranged to swing in said recesses.

25. In a typewriting machine, a main frame, a platen carriage and escapement therefor mounted on said frame, an auxiliary frame mounted to move forwardly and rearwardly on the main frame, a series of type-bars and a universal bar actuated thereby mounted on the auxiliary frame, and operative connections between the escapement and universal bar that automatically connect and disconnect as the auxiliary frame is moved on the main frame.

26. In a typwriting machine, a main frame, a relatively movable auxiliary' frame, a series of type-barsl and a universal bar actuated by the type-bars mounted on the auxiliary frame and movable therewith to an inoperative positionnear the rear end of the main frame, and a part extending forwardly from the universal bar acting to hold the universal barin position.

27. In a typewriting machine, a main frame, an auxiliary frame movably mounted thereon, a series of type-bars segmentally arranged on the auxiliary frame, and a universal bar actuated by the type-bars and having a forward extension passing between the type-bars that holds the universal bar in position.

28. In a typewriting machine, a main frame, an auxiliary frame movably mounted thereon, a series of type-bars segmentally arranged on the auxiliary frame, a universal bar actuated by the type-bars and having a rigid forward extension passing frame, a device operable at the type strokes mounted on the main frame, an auxiliary frame mounted to move relatively to the main frame for condensing the machine, and a folding arm which is mounted on said auxiliary frame normally in operating relation to said device, said larm being automatically folded to an inoperative position and restored to the normal position by the movement of said auxiliary frame from and to its operative position.

30. In a typewriting machine, a main frame, a ribbon vibrator and a ycarriage escapement mounted on the main frame, a' link connected to Said vibrator and escapement, an auxiliary frame mounted to move relatively to the main frame for condensing the machine, and an actuating Adevice for said link mounted on said auxiliary frame, said device being automatically placed into and out of actuating relation with said link by the movement of said auxiliary frame.

'31. In a typewriting machine, a main frame, a platen carriage mounted thereon, type-bars, an auxiliary frame carrying the type-bars and mounted on the main frame to move in substantially upright position to shift the type-bars to a position beneath the platen carriage for shortening the machine, and a support movable for reducing the height of the machine.

Witness my hand this 15th day of July,

EMMIT G. LATTA.

Witnesses:

F. G. DU'rroN, FRIEDA M. WEIsKoT'rEN.

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