US1780537A - Typewriting machine - Google Patents

Description

Nov. 4, 1930.

D. Y. READ TYPEWRITING MACHINE f iled July s, 1927 4 Sheets-Sheet l Nov. 4, 1930. D. Y. READ I ,TYPEWRITING MACHINE Filed July 6, 1927 4 Sheets-Sheet 2 Nov. 4, 1930. D. Y. READ I TYPEVYRITING MACHINE Filed July 6, 1927 4 Sheets-Sheet 5 D. Y. READ TYPEWRITING MACHINE 4 Sheets-Sheet 4 Nov. 4, 1930.

Filed July 6, 1927 16 when writing paragraphs with: a secondary marginal indentation, and for thegeneral improvement of a typewriter of the front Patented Nov. 4, 1930 pawn Y. REAn'onWAs IitGtrom ni'srrniozi' OF COLUMBIA, AssIGNon'ro no sivil'rzia j conom TY'nnwnIT-nns me, on YORK SYRACUSE," NEW YORK, a CORPORATION OF NEW TYPEWRIT'ING iiinoiiinn i Application fii azriiiyis; 1927. senai No. 203,314.

The present invention relates to typewrifl in g machines andconteinplates improvements in the line lock, margin release and paper 7 feed ng mechanisms or such machines.

-. ,Iiii order toprovide improvements in a paper teed, permitting writing to the edges of the paper, for the convenience of the operator when gauging the extent and equality of margins to a sheet of writing and for convenience I strike type, I have rearranged and redesigned certain of its conventional elements and provided additional elements of novel character,

thereby devising a new structure ha-vingad- 'vantages'over prior typewriter structures. The novelfeat-ures and their functions Will behereinafter fullydescribed 'andthe ad-.

0 vai'itages derived by rearrangement set forth but it will be appreciated that the invention isnot limited in its scope to the exact embodi ment disclosed byway of example since,

without departure from the teaching thereof, minor alterations and further rearrangements maybe suggested by one skilled in the art.

f In the drawings:

Figure 1' is a front elevation of a portion of a front strike typewriter, the platen and associated paper steed devices being fully illustrated but portions of the frame and carriage, which are not pertinent to the present invention, being omitted for the sal e of clearv Figure '5 is an enlarged view, partially in elevation and partially in section, of the-paper deflector'plate and its supporting mechanism; Figures 6 and 7 aretransverse sections thru one of the combined platen stop and paper holding devices, thetwo views. showing oer:

part ofFigure the carriage toward theright. The margin bar" 17 is longitudinally" grooved upon its top, as shownin Figure 2,

tain of the operative parts infdifierent posi- V Figure Sis EJSGClJlOII online 8 -18 of Figure 6; and i u Figure-9 is a section on line 9+9 ofaFigure 4; Certain of the corner posts oft-heframe are indicated, at 1 0 and the platen isindicated at 11, this platen being supported above the top plate 12 of the :frame upon [a carriage ,by

means of'which it may be movedxaxially in we'll' lznown manner. It will be observed point being under the eye of the observer as he sits ingfront' ot the machine, one of the type b'ars being indicated at13 and'the margin release key, which is positioned among the other keys, at 14; A universal bar is indicated at 15 andauniversal bar locking plate, by means'of which theuniversal bar may be type thereby prevented from reaching "the printing point, being indicated at 16.-

7 "Immediately in front of the platenaiidibe low the printing line is "positioned a toothed margin bar 17, this bar having-its ends rigidly secured to the carriage 17 Immediately Es. re-TENT QFF'I QCE 15 from arr inspection of Figure 2thatthema chine is of the front strike type, the'printing locked against substantial movement'and t-h'e' underlying this and disposed parallel thereto, o

is an abutment bar 18 which :is-mounted on the framefor alimited: rocking and longitudinal movement; toothed, at least at one end, as shown in F igure i Adjustably supported: upon the margin bar are two stop meinbers,-one a line lock stop-indicated at: 19 and the other a margin stop indicated at20. Upon the rod;

ing abutment 'barare two abutment's, a stationary abutment 21,-which'is'rigidlysecured to the bar, and anfadjustable.abutment member 22. In the operation of the machine the line. lock stop 19 cooperateswith' the permanent abutment 21 in limiting the move ment of the carriage toward the left and the margin stop'20 cooperates with the adjustable abutment 22 in limitingthe movement of andis toothed on its lower edge, the teeth be ng adapted" to interlock with similarly The abutment bar is'likewiseformed teeth of stops 19 and 20 to prevent 1ongitudinal movement of these stops on the bar. The teeth may be, of course, disengaged by the operator in making adjustments. The line lock stop and the margin stop are similarly formed and one only need be specifically described. From Figures 5, 6 and 7 it will be seen that each such stop comprises a member 23, preferably formed of sheet metal, having a portion 23 which extends beneath the bar and lateral arms 24 which extend across the top thereof. From the portion 23 teeth 23 are struck upwardly for the purpose of 28 the downwardly projecting parallel armsengaging in the interdentalspaces of the rack formed on the margin bar 17. V The arms 24 of the stop may be formed integral with the main portion 23 or formed separately therefrom and brazed or otherwise secured thereon. Thru each of these arms a screw 25 extends" (see Figure 5) whereby it is secured to the central portion of a spindle 26. This spindle extends parallel to the margin bar and that portion of the same to which arms 24 are fastened has a fiat upper surface and around lower surface which rests in a correspondingly formed groove in the top of the margin bar. On either side of this central section the spindle is of reduced diameter and has axial threaded apertures formed in its ends, into which screws 27 extend. The peripheries of the circular heads of these screws fit within the groove formed in the margin bar, which groove in fact forms a guiding trackway for the spindle. Sliclably mounted upon the spindle is a yoke member of this yoke being provided with apertures which receive the reduced end portions of the spindle. Acoil spring 29 normally presses this yoke to the left. (Figure 5) the left hand end thereof striking the head of the left hand screw 27 which forms an abutment or stop therefor. The yoke is free to move toward the right however, under the influence of an impressed force, until its right hand end strikesthe head of the right hand screw 27,

which likewise constitutes an abutment. In such movement the spring 29 will be compressed and, upon cessation of the force causing such movement, the spring Will again expand thereby moving the yoke to the position in which it is shown in Figure 5.

Secured upon the yoke member 28 and preferably formed integral therewith is a deflector plate. 30. This deflector plate is curved slightly to substantially conform to the curvature of the platen, against which it normally rests (or against the paper which may overlie the platen). It is slotted at 31 for a reason which will be hereinafter explained, and is also provided with a rectangular cut away portion 32 at the level of the printing line of the machine. The deflector plate may be swung freely about the axis of h the spindle altho its movement in one direclarged upper portions of arms 33 constitutes a pivot upon which a curved roller arm 35 is rotatably mounted. Roller arm 35 terminates in a horizontal portion whichcarries a rubber roller 36 for pressing the paper against the platen.

Referring particularly to Figures 6 and 7 it will be observed that likewise pivotally supported by the parallel arms 33, which arms,

taken together, may be designated a bracket,

is a locking arm 37. Arm 37 is curved intermediate its ends, a portion of the arm lying in a plane transverse to the axis of the platen,

as seen in Figure 6, and a portion of the arm lying parallel to the axis of the platen as seen in Figures 1 and 3, the last mentioned portion 1 of the locking arm normally lying against the outer face of the associated deflector plate. The inner end of the arm is cut away to provide a cylindrical surface 38 centered about the axis of pivot 34 and a portion of the roller arm'35 is cut away at 39 to likewise provide a cylindrical surface centered on the axis of pivot 3 1. The surfaces 38 and 39 have substantially the same radius and, when the roller arm 35 is rocked from its full line position (Figure 6) to its dotted line position, cylindrical surface 39 of the roller arm will move into contiguous relationship with surface 38 of the locking arm 37. In this latter position it will be observed that arm 37 is locked against upward rotation about its pivotal axis and hence is caused to act as a brace or strut preventing inward movement of the roller arm supporing bracket, the inner end of the strut resting against the surface of the corresponding deflector plate.

During typing the roller 36 normally lies against the paper and maintains it tight against the platen. It also lies in this position when paper is being fed into the machine. When an erasure is to be made, however, it may be desired to throw back the roller supporting arm into the dotted line position (Figure 6). In this position, as has just been explained, the roller arm supporting bracket is locked against inward movement. This is for the purpose of preventing the operator fron accidentally pressing against the top of the bracket and thereby causing outward movement of the lower portion of the stop 23 and disengagement of its teeth 23 from the teeth of the margin bar and hence rendering it impossible for the stop to be accidentally moved lengthwise of the bar, thus changing its adjustment. If it is desired to change the location of the stop the operator simply position in 'vtliich itisshown in Figure 7so v v the teeth 23, theteeth ofthe r ek whereupon the stop ay'beeq kly ad 126 afl llli l d f d eerp t n u d to, the ie wer end-of the roller supportmg arm.

I hiss arin 'is so desi ned as't'o exert a convA,, D b

tinual'upvvard thrust and hence it'iseiljective v .1 topress the roller against the platen when the is its full line position (Figure. 6) a J lv this am w y ew 4.. It glmied t0 he dotted, line pOSltlOll h? I a the lineof thrust of the; spring being tten vo redvf rom one side of the pivotal axis to the other as the arm is moved .a i e t em po stherbelohise ived that when the partsare in iiormal position as shown in full lines iii-Fig.

beau 33 isinwardly pressed as in Fig. 7, the v-i, 1. 9 prin b come n t liz betiv'e'enthe pivotal points 26 and 34 thus dis w th ll crempinsf m sp i fr et; 1, n h sli ng the tops an .20 12; their 'eiei'e r T erghgjabutmentb r l8 p o' i a. piced lens ti d m eete d l e' et t1 u which proj ect screws {14: by means offvvhich it as Q th l m fleus y hav esl j lo tu na mo t I manner in which it is secured tothe frame al o p rmit it t hav a s i rocking jinovenient about its rear edge or an axis time? it n fl e e'll th r to No mal y ,iii h ll lin neweron i W i ShQWII ensure 3 bvian t cl ne ie Spring which'has'one endatta ched to its nd hesopipe it lend to porti of theira ess i e 11 .011 h meein el a e y h weve resu s 1 dewew m em n of the ielli she nce dewnw e kme mevenen ttzh .ferv rd d f h abutineht bar. ape i7 .offthe vstaticmary abutment 21 is an abutment face which oo- 1 operates \viththe line lock stop l 'fllld this normally lies in thepath of stop 19. Face'iS 01" theadjustable abutment member 22 normally lies in the path ofinargin stop 20 By actuatinglthe margin. release key 14 and downwardlyrocking the bar 18 the abutinept faces 41? andiSof the two stops 21 and 22 are moved out of the path of the line lock s s-need margin step re p t ly, for the rern se of. enablin h ar age t b traversed farther. nert-her dIIGCUOIL;

he Wli S eb t pfi sempr es sh t meat-member, h p-ed in p ess section. as 9 iellf g. end havi g'e hand e 59 usted to new position. A fwl're' spring 10 1 one endanchored 1n the central port on the platen It vvilliunthe e0 alsoservesto press into engage ent the teeth 23 but that Whenthe' freely moved, to the right.

rearedg'e I 1 tone ,end, the'gabutment proper, having the abutment fac'e 48, being at the opposite end.

It is provided with teethl51" (Fig. 4,) which normally mesh with the teeth of the abutment bar 18 t'opre'v'entits longitudinal movement member 22 has itsh'ead in the groove,the head along the barfrom left to'rightgl The abut- 3 otthis rivet constituting in reality aflpivot rocked thrua limited distance, .and al'so a retein ngm mb 'r pr nt gme et ziz from being laterally' vithdrawn irom the abutmeiit bar, alth'o permitting;longitudinalmovement -,about' \vhiohilthe entiremember' 22,1nay be thereon A. spring 54 has oneend secured,

to member 22 on one side of pivot'53'and its other end presses against the teeth of; bar Y 18, This spring therefore tendsito rock meme 7 b'er22 in an anti-elockwise direction (Figure 14) about pivot 53 and hence to maintain teeth 51 in engagement with the abutment barteeth.

abutment member 22 it is apparentthat this membermay be drawn to th'e'left'by simply.

fingerpiece must first be pushed towardtheabutmerit bar so that teethj51 become dis engaged. The, entire member inaythen be By djus member 22 longitudinally of theabutment bet i s febt v a m nt placed at various points, thusdetermining marginslof difierent Widths as desired. 7

It will lie-observed thatthe abutment bar 18 has its ;rear edge notched centrally, there;

gr ase. one nd' f a lever 57, pivoted at 58, ent'endsvvithin this noth and the opposite of this lever fengages an arm j6O which extends lupvvardly from, and is movable with", the wick t at? 61 (Fig to hi h; th 1 is l ocliedagainstmovementshortlj tter .t Jeanne c st p 9 'et ikesflthe but e so that the type can no longerbe broughtinto Contact with the paper. If, on'thelotherhand,

the line 1 a; stop hasjbeicome, active to prevent tiirthenihovement 10f :theoarriage" this may be effected. byfm aflipulation of the margin relea key vhie a a b e e o e exp a ne depresses the. abutment bar v18 and' removes the abutment 215m ofthe'pathofthe line loek 'tstop lgj 'Thespring 4:5 having alateral aswell as downward pull returns the abut- Inent bar18 a 2 raising e locking plate 16. The Carriage rlom the above deseriptionof the-adjustable:

, I ong'its slotvvayslfi immediately'upon release'of the margin'release key, thus face 4:8 maybe plate '7 16' the juniver'st lbar .115 i itiit d sir ypil a ewm el c af r 7 termines, of course, the width of the marin. As it is frequently necessary to write 7 sub-titles or captions in the margin of a typer the bulk of the instrument is to have a cer tain definite margin, marginal writing being only necessary at intervals. By the mechanism'jwhich I have ust described, it is not only possible to set the adjustable stop for the K margin of the body of the writing and then writejba'ckof it as in the case of marginal notes or captions but it is also possible to employit as an indenture stop. When used as an indenture stop it -18 normally kept 1n its home position at the extreme right of its M travel and is moved out a few notches upon occasion for the purpose of indenting a certain paragraph or sectlon of the manuscript. The

- advantage being the undisturbedpositioning of the main stop block 20 during these temporary indentures.

v In feeding paper into the machine its forward edge isdefiected and guided by the defiector plates so as to pass under the rollers 36. The rollers being spring'pressed against the platen, and likewise the deflector plates'thru the intermediary of locking arms 87, the paper is firmly supported against the platen at the printing line and for some distance above it so that there is no danger of wrinkling or slippage. The parts are so designed that the pressure rollers are in no danger of being struck by the types as they approach the printing point in either direction but the defiector plates would pass across the printing point and be struck were they not prevented from doing so by contacting, respectively, with the opposite edges of the line finder 63.

As each deflector plate approaches the line finder the edge of this last mentioned member entersthe slot 31 of'the deflector plate, this entrance beingcontinued'until the edge of the line finder strikes the end of the slot. At this point the inner vertical edge of the deflector plate'isjquite close to the printingpoint but not in such position as tobe struck by the types. Further movement of the carriage, however, resultsin compression of the spring 29 and relative movement of the deflector plate and carriage so that, while the carriage may be traversed some four or five additional letter spaces, the deflectorplate remains stationary and doesnot pass over the printing point. In this manner a paper finger mechanism is provided which permits writing under the feed roll carried thereby and which automatically feeds I under such roll. Paper fingers have previously been designed in which the feed roll orpoint of pressure overhung the extreme writing point but when these are positioned near the edgesof the insets? paper topermit writing to the extreme edges of the sheet; this being the purpose for which they were designedythey have no control over the sheet of paper when writing across the top edge of the sheet, since the carrying arm for the roller or pressure plate is of necessity offthe edges of the sheet in order to be out of the paths of the type when writing on the extreme edges. After having written on thegextreme upper corners of a sheet or card the platen is rotated and the paper advances upwardly. There is at this time no control of this sheet by the fingers and consequently it becomes tangent to the roller platen and passes in front of the feed rolls instead of underneath them. In order to correct this it has always been necessary to manually manipulate the paper or card at this juncture in order to place it under the feed rolls. This fault is common to all previous feed rolls situated above the writing point whether supported from below by overhung paper fingers or from above by a device commonly called a bale. The deflector plate as has been shown serves to feed the paper underneath the roll without interfering with subsequent writing beneath same.

The association of the inner edge of the deflector plates with the points on the paper at which the stops will cause the writing to margin affords the operator a visual indicating means on the writing sheet enabling positioning of these stops without reference to scales. While this thought is not altogether new to theart a certain refinement present in this new structure renders it more easy of accomplishment. It has been found desirable and has come'into general use to have in conjunction with the means of stopping theline of writing on either side, means for exceeding these stopping points a few spaces whenever desired, the said stopping means automatically resuming control when returning within their limits. Prior art shows stops with means next the sheet of paper for indieating their position but these stops have to be moved and re-positionedwhen writing beyond the point indicated' The automatic feature above described obtains in this device when writing beyond the indicated point.

I contemplate minor changes in structure in adapting the invention to various makes of machines and the invention is not limited in the exact design and arrangement of its component elements to the embodiment which has been disclosed'by way of example.

What I claim and desire to secure by Letters Patent is: a i

' 1. In a typewriting machine, a carriage, a

rotatable platenmounted on the carriage and suitable type bars, in combination with an adjustable margin stop mounted on the carriage, and a paper finger mounted on said stop and arranged to slide thereon against the ndrnial positionr V I H w 12. Infla'ty pewriting machine, a r rotatable platen niountedgon the ca'riiageaad suitable-type bars-,jiri emb'ination with an easier of MpTi-I teenag ea d it in l adjustable" niargi'nstop" mounted on the car ri ge',aadewa a er holding-'1devices'mounted' on said -stp and a vating -to"; hold*fthe1 7 paper to the platen; one'ofsaid devices being '."Ina'typ'ew'ritingmachine, a carriage, a

enable an the st p longitudinally, f the rotatable rnounted j on the carriage, and type bars arrangedto strike in front of theplaten, in" combination" with a support 'niount'ed onthe carriage andtwopaper guid.

ing devices'carri'edby said support and 'cooperating to guide a sheet of paper about the platen, one; of said" devices being "operative on thepaper above the printing line and the other extending" across the printing'line,the latterdevice being mounted upon the support to yield thereon longitudinally of the at 4. In aftypewriting machine," a. carriage,

V a rotatableplaten niounted on the-carriage,

and suitable type bars,'incornbination With an adj ustable'f margin fstlop "nioun'ted on the carriage," and two paper 'holding!devices mounted on 4 said stop and cooperating yto lioldthepaper toithe' platen; one of said I devicesbeing'efiective at the printing line and being'movable on the "stop loi'i'gitudinallyof the carriage and the other device-being platen relatively to said support andhaving a 1 oll* jarrangedto"bear upon the platen above the printing line and the other device being arranged below the roll and being mounted upon the support to move thereon I longitudinally of the platen.

6. I'n a typewriting machine, a carriage,a' rotatable platen mounted on the carriage,

and type bars arranged" to strike in front 1 ofthe platen, two: pressure rolls supported to bear upon the platen above the printing line, and two paper guides arranged below said rolls, respectively, and extending across edto yield longitudinally of the the printing line, said guides being support platen relatively to said pressure rolls.

, I 7. In a typewriting machine, a carriage,

a rotatable platen mounted on the carriage,

' and'suitable type bars, in combination with an adjustable margin stop mounted onthe permit" :of writing an adjustable margin stop niou V carriageandlra. paperfinger'inounted forcarriage jto lilnitiythe norinalwlengtli 'of line of writing, a paperffingeranounted}on thestop, and" means" for automatically mov ing theflpaper finger relatively to the stop to" in the inarginwithout 'di's turbingthe-stop; 8. a *typewritingmachine", a car a rota-tableplaten Inounted 'on the carriage, and suitable type bars, in comb nationwith a'fde'vi'oe fixed on the frame of t ll'e 'lliilClll'ne age, 7

longitudinal movement en the i margin, stop anjd'adapted to be automatically moved rela-,' tively totheplaten by' contact with said". de- Vice to; permit of writing in the margin Without disturbing said's top e 1 i 9. l nagtypewriting machine, a carriage, rotatable "platen niount'e'd I on the carriage, and suitable type bars, in combination with a" line finder fixed on the frame of theme chine, an adjustable margins'top mounted on the carriage, and a paper-finger mountedon the stop, said paper finger having a slotto receive tlie line'finder, for .the purpose set forth. r

' -10. a typewriting machine, acarriage, a rotatable platen mounted on the earr'i'age" and suitable type bars, in combination with an; adjustable margin stopi InOunt-ed onL-the carriage, a paper fin r meunted en said stop and'iarrangedto slide thereon against the tension ofa springitending'to hold in normal position, and a secoi'id'pap'er ifing er mounted on said stop and adapted" to co:

fingerg r e 7 11. In a typewriter, in o'mbinationta frame, a carriage mounted thereon for't'ransoperate with the-platen above the first named latory "movement, spaced stops adjustably supported oiithe carriage,,a'barsirpportedon' the" frame and disposed "parallelfto the path of travel of the carriage, said bar being lat erally niovable, spaced abutinents on said bar, one of which is adjustableeach abutment n'ormally the path" of trayel of the cor respondingstop,'and'n1eans for 'laterallyrnov the path of traveler the stops.

12L .T he combination set' foith in 'claiin in which the i ingsaid 'bar to nio ve'said abutnientsout of ran'ayibe caused to rock. about a: p

The combination with ,t'he; pat nted typewriter} na'rgin bar l novable. therew t val a eins n dm P p d -f e ing plate, aipaper roller -arni,-.said plate "and arinigbeing 'pivotally mounted on: said stop;

and eolnn on spring in'e'ans 'for' nor-nial'ly urg in'gboth plate and arm toward the platen.

14: Thecombination with the platen of a typewriter 3 er a inarg'in T bar. movable there with, a margin step rheeeo a apemeflsa:

ing-piataep per roll-cram, said. p tte ana and spring means for normally urging both plate and arm toward the platen. 1

15. The combination with the platen of a typewriter of a margin bar movable therewith, a stop mounted on the margin bar and adapted to be rocked laterally thereof, being in locking engagement with said bar when in one position and being slidable thereon when in a second position, a paper roller arm pivotally supported on said stop and normally extending toward the platen but adapted to, be swung about its pivotal aXis away from theplaten, and means for maintaining said stop in looking engagement with said bar, when said arm is directed away from the platen. i

16. The combination set forth in claim 15 in which the last mentioned means includes a locking arm pivotally supported on the stop, and a deflector plate intermediate said arm and the platen against which the end of thearm normally rests, said locking arm and stop having interlocking portions which are brought into locking engagement when the paper roller arm is swung away from the platen.

17. The combination set forth in claim 15 in which the margin bar istoothed on its lower edge and the stopisprovidedwith teeth for engagement therewith, the arrangement being such that said teeth may be disengaged only when the paper roller arm is extended toward the platen.

18. In a front strike typewriting machine, the combinationlwith a carriage and platen and suitable type bars, of indicating devices close to the platen and adjustable lengthwise of the carriage, said devices being adapted to indicate the ends of a proposed line of writing,one of said devicesbeing yieldable to permit of writing beyond the limit of the proposed line and having means for automatically returning it to its set position when the carriage is retracted.

' 19. In a front strike typewritingmachine,

the combination with a carriage and platen and suitable type bars, of indicating devices close to the platen andadjustable lengthwise of the carriage, said devices being adapted to indicate the ends of a proposed line of writing, said devices being automatically'yieldable on their supports to permit of writing beyond the limits of the proposed line, and means for automatically returning the indicating devices to normal set position. i

20. In a typewriting machine, a carriage, a rotatable platen mounted on the carriage, and type bars arranged to strike in front of the platen in combination with two pressure rolls supported to bear upon the platen above the printing line and two paper guides arranged to direct the paper beneath said rolls, respectively, said guides being spring controlled to yield longitudinally'of the platenand to return automatically to set position.

mime? 21. In a typewritingmachine, a carriage, a rotatable platen mounted on said carriage, type bars arrangedto strike in front of the platen,- feed rolls positioned above the line of writing, means for automatically guiding paper between said feed rolls and said platen, said means being automatically movable out} of thepath of said type bars by movement of the carriage in one direction, whereby the entire surface of the paper maybe written upon while said paper is being securely held againstthe platen, and means for automatically restoring said paper guiding means upon reverse movement of said carriage.

22. In a typewriting machine, a carriage, a rotatable platen mounted on the carriage and suitable type bars, in combination with a margin stop, a paper guide mounted on said stop adapted to direct the paper around the platen, said guide being mounted to move longitudinallyof the platen relatively to the stop. a

23. In a typewriting machine, a carriage, a rotatable platen mounted on the carriage and suitable type bars, in combination with a paper guide, means for holding the guide adj acent' the platen to guide the paper thereon, means whereby the guide may slide longitudinally of the platen, and a spring to returnthe guide to normal position. v

24:. In a typewriting machine,in combination, a frame, a carriage mounted on the frame for translatory-movement, a margin stop adjustably mounted on the carriage, a line lock stop mounted on the carriage, a bar supported on the frame adjacent the carriage and arranged'pan llel to the. path of the carriage, an abutment adjustably supported on said bar for cooperation with the margin stop, a line lock stop abutment mounted on said bar, and means for laterally moving said bar to withdraw the abutment out of the path of travel of the margin stop for the purpose set forth.

In testimony whereof I hereunto affix my

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