US890507A - Attachment for type-writing machines. - Google Patents

Description

l PATBNTED JUNE 9.1908. GQRIN. YPB WRITING ATTACHMENT FORT MACHINES.. f

APPLICATION FILED MAR. 4v. 1907.

' @SHEETS-'salam 1.,

. @s c; NEVI UNITED serias Meer ernten;

FREDA P. GORIN, OF CHICAGO, ILLNOIS. i'

A'r'rAennnnnr non TYPE-WRITING .is/incninnsf.

`in the county of Cook and State of Illinois,

have invented certain new and useful Improvements in Attachments for lype-VVrit ing Machines, of which the following is a tnll, clear, and exact specification` 'This invention relates to improvements in attachments for typewriters and other similar machines' of that class of attachments adapted to produce a plurality of original copies and .now known usually as multigraphs.7 1

The invention in the present embodiment is shown applied to multigraph attaelnnents of Athe general character illustrated and claimed in'prior United States Patents No. y649,513 and Nef 649,514-, granted-.to me May 15, 1900, and in which attachments for the common forms'ot typewriters are shown having l'or their object the enabling of such machines to make multiple copies, each of lwhich copies is an original in thatit is produced by means of arihbonbrought 'forcibly intocontact with the surface of the paper by suitable type, fore made consists primarily of a supplemental inking-ribbon and suitable means for supporting and operating the same.

The supplemental ribbon is wound on drums or reels and is operated iby being wound on one oiz the drums or reels and dis-- charged from thc'other after which the operation is reversed by sluiting the supplemental ribbon in the opposite direction.

In devices ol this charar'fter, great dillculty has heretofore heen experienced inseeuring a proper and constant degree ol' tension on the supplemental ribbon. To overcome this dilliculty various expedients have been proposed and in my l'ormer patents l have shown spring actuated brakes in cont act with the. reels or drums l'or preventing the inertia `from carrying these parts beyond the required degree ol` movement, thus causing slaekfin the supplemental ribbon. ln pmt tice, however, l lind that :my l'orm ol' friction device not desirahle by reason ol the power which' is consumed .in overcoming the resistancevsthe amount of powerwhich may he Used in operating a device ol" this chanac-ter is necessarily limited-aud it is the p'rinmrv object of this invention to n-mxide improved Specieation of Lettera atent.

Application filed March 4, 1907. Serial4 No. 356,334.

The attachment as hereto-l` Patented .Time 9, 199B.

meansatorsecuring positive and complete con- -i trol of the mechanism used in operating the supplemental ribbon and which is at the'same time simple and ,economical in construction and capable of being operated with. the minimum amount ofpower. It Will be apparent,

however, that-the invention may be used advantageously with many forms of inking ribbons and an object of the invention is to provide improved means for controlling theshitting'mechanism of any form of inkine' ribbon on typewriting machinesand the like when such shitting mechanism embodies reels or,

drums yon which the ribbon is alternately wound and unwound.

A further object of the invention is to provide improved means for reversing the movement of the reels or drums carrying an inking-ribbon.

A further obj ect 0l the invention is to provide improved means for supplying ink to an inking-ribbon. i,

rlo the attainment of these ends and the aeeoniplishment of other new and useful objects, as will appear, the invention consists in the features oi novelty in the construction, combination and arrangement of the several parts hereinafter more fully described and claimed and shown in the accompanying drawings, 'illustrating an exempliiication of `the invention, and in whicli- Figure 1 illustrates a plan view of a type writer carriage eqiupped with a multigraph attachment embodying the invention, and

Fig. 2 is au end elevation vtaken approxi mately on line 2-2 Fig. 1. Fig. 3 is an enlarged vertical section on line 3--3 l41 ig. 1, with parts broken away to exhibit the construction in detail. Fig. 4 is a transverse sectional view on line 444 Fig. 1. Fig. 5 is an enlarged detail view of one of the reels or drums l'or carrying the supplemental inkineribbon and a portion of the adjacent contro lingr mechanism.

'l`he nltzmhment is inthe drawings shown applied to a .leniington typewriter, although it is obvious it may be equally Well applied to other makes ol'v machines. The lower part oi theI typewriter is not shown but the machine is, of course, provided with the usuel main frame, set of keys, o erating levers, type and rihhon or other in ing device, all ol which form no invention.

part of the present -ried bysuitable means to'be hereinafter de* scribed is a supplemental' mining-ribbon 3. When but a single lcopy is desired this supplemental ribbon 3 is. thrown out of the way and not used, the single copy being made by use of the ordinary main ribbon whiclris mounted on the lower portion of the machine or any convenient location where it may be placed. JThe main ribbon is not illustrated in the drawings as it forms no part of the present invention-` When two or more copies are desired the su pleinental ribbon is employed and is placed ietween the sheets of paper in 4a manner which will be hereinafter described.

To make one copy type bars are used in connection with the main ribbon of the machine,

as just suggested, and when two copies areA desired the additional or supplemental ribbon is placed. between the two sheets of paper, and type acting throuigh the :first sheet and. through' the supplemental ribbon makes the impression on the second sheet, it being understood of course that the raised surface of the type makes a corresponding impression in the iirst sheet and the supplen'iental ribbon and thereby. is enabled to leave a similar mark upon the second. sheet, with which the raised portion of the ribbon con-- til-ets by reason ol the iressure of the type. .lf the supplemental ribbon be placed immediately between the two sheets it will be apparent that not only 'two impressions will be made as described but there will also be a third impression on the back of the lirst sheet, which is not only of no use, because it lis a reverse impression, but it also mars the appearance of the first sheet. To avoid this defect, the side of the ribbon next the back of the first sheet may be covered byprotecting material, either integral With .the ribbon, or, what is more preferable, a removable protesting strip, which may be of the same length as the supplemental ribbon 3, and be manipulated with it in themannershown and described in. my prior patent No. 469,514, to which reference has already been made'` rllhis protecting` strip is not illustrated herein, for the reason that it forms part of the present invention. lf three copies are desired, .a thn'd sheet 'ii/paper y(preferably thinner than the other two eots and in lieu ol' the protectimy strip just mentioned) is placed between the supplementrl ribbon and the lirst sheet, and in this manner the third sheet will receive an im- )re'ssion upon its back of a reverse character7 lout which may be read correctly when looking from the front or other side of the sheet. It is obvious that the supplemental ribbon 'plieable seater may be of any convenient size and shape,

ever, the construction shown `is the most Aadvantageous known tome, and is the one to which the invention is particularly ap` On the end members of the carriage frame l, upright supporting members 4 andbare 75 secured.v Journaled in the upper ends of members 4 and 5 is a suitable shaft, which protrudes at its ends throii h the members a, and 5, and on the outer en( s of which is earried the reels or drums 6 and 7.

7, and is deflected downwardly from both of the drums, in order that it'may traverse the entire length of the carriage and consequently the entire length of the'platenor 55 aper feed roll 2. This deflection of the rib- )on and guiding of the same in itsrelation to the platen, may be accomplished by suitable guides S and 9 supported at the ower eX- treinity of the depending members l() and A 11. The construction of theseguides is not described in detail, since they forml no part of the present invention, and since they are described and shown in detail in my patent' It will be apparent, howthat it is deflected at right angles in order to '10g permit it to pass adjacent to the surface of the platen,va nd at the same time be parallel` with. such surface. .These guides are also provided with suitable means, as the hooks l2 and 13 by which Wires oneords, one strand 105 on each side 0f the supplemental ribbon may be held. taut between the guides. These' wires or cords on each side of the supplemental ribbon 3, one of which is designated in drawings '(see Fig. 3) by the numeral 14, ,110

are preferably of a size somewhat greater in diameter than the thickness of the ribbon, and thus serve as a protective means *for the ribbon when the paper is shifted, preventing the ia )er from comin(r into' such immediate 115 contact with the ribbon, as would cause it to be deflected from its proper position, or to smut the paper by reason of such'contact. 'lhis feature of the device is also shown and descril'ied at greater length in my prior pat- 12g ent last mei'itioned, and forms no part ol' the v present ii'ivention.

Thel guides S and S) are preferably pivotally connected to the lower ends of members l0 and. 1ll and they maybe held or caused to 125 assi'nne any desired position in relation to the members 10 and 11., by having'suitable vupwardly extending branches 8 and 91 in eonI tact with the guiding flanges 4a and 5a on the lower extremities of the stationary members The ribbon 80 'S is attached at its ends to the drums 6 and 4 and 5, as it will be seen by reference to Fie. 3 that these members are shown extending below the carriage trame. In order that the guides 8 and 9 may be adjustably mounted, the members 10 and '1..1 are secured near their upper extremities to the same axis on which the drums 6 and 7 are carried. The construction of this axis carriedv by the up right supports.- 4 and 5 will now be described. The outer sleeve 15 is journaled in the uprights 4 and 5, having its ends extendin beyond its points of support in such mem ers, a distance sufficientto receive depending members 10 and 11, which are firmly secured to it, in'order that both depending members will move simultaneously, thus causing the Vsupplemental ribbon guides 8 and 9 to have corresponding movements for preserving a roper alinement of the supplemental ribbon. tfithin the sleeve 15 is -a second sleeve 16, having 'its outer extremities extending beyond the ends of the sleeve 15, and on the outer ends of which the drums 6 and 7 are carried. Within the sleeve .16 isthe longitudinallymovable ro Ll or shaft 17, having its ends extending somewhat l -Jyond the extremities of-th'e sleeve 16, and provided with suitable enlarged portions 18 andV 19, carrying the inwardly projecting lugs 2() and, 21.

Drums orl reels 6 and 7 are-journaled on sleeve 16 so as to rotate thereon and are preferably held against lateral `movement by suitable pin or screw 22 adapted to coperate with a corres ending annular groove 23 in sleeve, 16. t will .be ap arent that the purpose of the longitudinal y movable rod 17 and the end members carried thereupon is to lock the reels or drums 6 and 7 alternately to rotate with the rod 1f?. The rod 17, however, while permitted to have longitudinal movement in relation to sleeve 16 is nevertheless secured against rotation in relation to this sleeve by suitable means as threaded screw or pin 24 adapted to coi'ipcratc with thc longitudinal groove 25 in rod or shaft 17. 'lhe exterior surface of the members 1S and 1) at the ends of-rod or shait 17 are formed of convenient size and shape i'or the o )crator and preferably have their outer suriaces knurlcd as illustrated (sce `Fig. 3). 1n the typewriter carriage oilv the constriu-tion to which the. invention is applied in this embodiment a suitable operating lever 25 is irovidcd. This lever is in the shape oi a bell crankand is pivotcd to carriage franie 1. It has an up\\'a1 lly extending branch 25 to which thc gravity paul 26 is pivotc'd and adapted to coi'iperate with tbc ratchet wheel 27 on paper iced roll or platen P. By this construction when thc lcvcr 25`is moved on 'its pivotal mounting by thc operator pawl 26 cooperating with ratchet 27 operates the platen or roli. .Near thcuppcr extremity of the branch 25 a second gravity pawl or rack is pivoted designated by the numeral 28. This rnember'is provided with a plurality of` teeth 28a adapted to coperateV with the teeth of the ratchet wheel 29 which is fixed to sleeve 16 .by a suitable spline or key 30 or in any other suitable manner. Thus it will be seen that when the mechanism for shifting the feed roll or platen is o erated the ratchet 29 and the sleeve 16 wil be correspondingly rotated. It will be ap arent that when the ribbon is being woun on to one of the drums 6 and 7 the other oi' the drums must rotate in the opposite direction in order to give oi a corresponding quantity of ribbon. To secure this result one of the reels or drums 6 and7 must at all times be left free to rotate independently of sleeve 16. This is accomplished by the construction already described for it will be seen that when one of the inwardly extending lugs or pins 2() and 21 is in contact with the correspond-4 ing depressions 20a and 21 in the drums 6 and 7 the other of such engaging pin or lug must be disengaged thus freeing its correspending reel or drum. From this"descrip tion it will be seen that the ratchet: 29 and the sleeve 16 rotate constantly in the direction indicated by the arrow in Fig'. 2 which is also in theA direction of the constant rotation of the platen or feed roll. When the rod or shaft17 is in position shown in Fig. 3 the drum 6 will be locked in the manner described to the sleeve 16 and`will be rotated thereby winding theribbon 3u )on it, while at the same time the drum 7 will be feeeto revolve and the ribbon willbe taken from it. On the other hand when the ribbon is exhausted from drum 7 the direction of its movement is shifted-by the operator who disconnects the drum 6 and locks the drum 7 to the sleeve 16 all of which is accomplished by sluiting the rod 17 thus engaging the lug or pin 21v with its corresponding depression 21a in drum 7 and at the same time disconnecting lug 2() from its criirresponding-depression 20 in drum 6. ln this manner the supplemental ribbon may bc continuously operated as long as desired. This constant shifting process accomplishes a beneficial ref sult in the usc oi hiking-ribbons well known and understood by tliosc versed in the art. ln a ribbon oi this character, however, it is sometimes desirable that means be provided for reiplcnislring the same )Vith ink. '.lo aceomp ish this purpose thc following provision is made. A suitable receptacle is secured to one or both of the depending guide supports 10 and 11 as illustrated by the numeral 31. 'l`h is member as illustrated is cylindrical in forni and in length somewhat greater than the width oi' thc ribbon 3. lit is placed in the 'path ol the ribbon preferably dcflecting it slightly as it comes `from the drums. A small distributing roller 32 is also pivotcd adjacent to the member 31 and serves as a convenient guide for the ribbon particularly the supplemental ribbon.

when provided with the loop guide pivot .M The member 31 is provided with a suitable inner cavity to be lfilled with inh and the ink is preferably retained therein by suitable sponge substance as 'le t and the like as designated by the numeral 31. The wallol' the receptacle adjacent the distributing roher 32 is broken away at 31h and the distributing roller 32 is so mounted. in relation to this o ening that it in constant contact with t e ink retainingr substance in the cavity 31 t By this construction the ribbon 3 is constantly fed with a small supply oi ink which is distributed in such a manner that the ribbon is not overi'ed.

Reference has already been made to the difliculty heretofore experienced in securing a proper and constant degree of tension on It will be apparent from the above description of' the manner in which the supplemental ribbon is shifted between the drums or reels 6 and 7 by the ratchet pawl which acts on the toothed wheel 29' that when the ribbon'has been wound so #het one, ot the drums is iilled and the other empty and the direction .of shitting of the ribbon reverses .the full drum by reason of its lexcessive weight due to the presence. oi practically the entire 'ribbon wound thereupon will on account of its inertia have a tendency to continue givin T off the ribbon when once vits movement hashbegun thus causing'the ribbon to become -slaelrand leave the printingr line so that the type will fail to strike. it an( no copy be made.

The -mechamsm by which the reel-s or drums are controlled with a variable move- -inent corresponding to the variable inove.-

ments of the reels or drums due to the windving and unwinding of the ribbon thereon will .now be described.

Pinions 33 and 34 are formed integral with drums (i and 7 or are attached thereto in any suitable manner. Pinion 33 meshes with a similar toothed pinion35 which is mounted on shaft 36 Ajournaled to rotate in suitable bearings' near the up ier extremity of members 4 and 5. This si the slia'l t 36 preferably as shown in drawings on the opposite sideot' the sleeve. 16 although the arrangement oi' the members 36 and 4l may be varied without detracl'ing from thc operation of the device or departing from the pur ose or spirit of the' invention. The sha t 4l is likewise secured against longitudiiaft 36 may be secured vagainst lateral movement by suitable collars sector nal movement by suitable collars 42 andwa; adjacent the members 4 i nd 5. The conical rollers 44 and 15 are carri'ed'on shafts 36 and L1i.A rThe roller 44 being preferably jlixed thereto by any suitable means as for example a threaded pin or Screw 4Gfwhi'le the roller 45 is loosely jouriialed on shaljt 4l but is caused to rotate therewith by, the helically wenn i spring 47 surrounding shaft 4l and'secured at one end theretoby suitable means as collar and set screw indicated by the numeral 4S 'while the other end of the spring is secured to one end of conical roller-'45. Tv iis construction permits the conical roller 45 t0 have a limited amount of'niovement both rotatably and longitudinally onfthe .shaft 41. under the elastic control of the spring 47. Av suitable liexiblenieniber f referably astout iishcord or the like as inc icatedby the numoral 49 is attached at both its ends to the large end ol the conical rollers 44 and45 as indicated at 50 and 51. It .will beobserved that the conical rollers 44 and 45 are dupliv .eates in size andcoiistruction but that their position with reference to their ends `are .re-

versed on the shafts 36 and 41: i The shape of these conical rollers lis determined b the variation in thel movements of the-drums or reel and 7 and the ribbon 8 which is due to the fact that the size of the roll or drum lover which the ribbon is wound constantly varies as the amount of ribbon on the drum o r rcel increases or diminishes. f I

The. coni al drinn or roller 45 isi-loosely `mounted oir shaft 41` and held in normal position by. the helical spring 47 in order that it mayy be .free to move longitudinally on shaft 41 which is desirable as it permits the member 45 to constantly adjust itself so that the cord 49 may be given oil4 and taken on these conical rollers at points 'approXiinatel yr opposite each other which prevents improper, wrapping ol' the cord thereupon.4 The opeii ation of this controlling inechanisi'n is asfolse lows: When thc reel or druinfis locked to rotatel as shown in Figs. 1 aiid 3 the move; ment of the feed roll shifting lever 25i1rnparts rotary movement to sleevefl through ratchet pawl and ratchet wheel 29 which movement is. imparted lo reel l thereby winding the sup )leinental ribbon l and taking the rilibon from drum 7 which is free to rotate on sleeve Hi. whenA drum (i rotates to take. on the ribbon it will be seen 4that shaft 36 will be rotatcil through the pinions 33 and 35 and the cord 49 will be un wound from drum 44. At the saine time the su ipleine'ntal' ribbon 3 in winding oil' drum 7 will cause it to rotate'in the opposite directionl from the direction ol rotation of drum l and this movement will be imparted to shaft 41'through pinions 3l) and 40. Rotation ol" shaft 41 will be im mrted. to conical drum through the' helical spring 47, which will ro- I) upon it cease? amount of the ribbon Wound upon it and con sequently the tape or ribbon 3 1s Wound in increasing .ratio which imparts an increasing degree of movement to drum f7. it will be vseen' that this increased movement on the part of drum 7 is compensated by the decreasing size ot the drum 45 as the Winding of the tape on drum increases While the amount of cord 49 given oil the conical drum 44 increases in the desired ratio by reason of the conical sha e ot the drum. By this con`- struction it Will be seen thattif the tension ot the ribbon asit leaves drum 7 has a tendency to cause the drum to rotate by reason of inertia after the movement of drum 6 stops, such movement will be `checked by reason of the fact that when drum 6 stops it positively stops the rotation of shaft 36 and the conical Y drum 44 which through cord 49, conical drum 45 and its elastic connection to shatt 41 will check the movement of shaft 41 and consequently the movement of drum 7 which is positively connected to' shaft 41 through pinions 39 and 40. When the supplemen tary ribbon 3 is entirely imwound from drum 7 and is Wound upon drum 6 the operator shifts the direction of movement .of the supplementary ribbon lby sliding the rod 17 longitudinally so as to engage lng tir-projection 21 With its corresponding depression 21a' in drum 7 thus causing the drum 7 to be rotated positively by the rotation ot the sleeve l5 and the ratchet 29. When shaft i7 is shifted to lock the drum 7 the drum 6 is tree to rotate on the shaft 16 by reason ole the disengagement of the lug 2O With its corresponding depression 20UL in drum (j. As the operation oi' the machine proceeds it will be seen that the Supplementary ribbon 3 will novir ,be Wound upon the drum 7 and the drum 6 will be rotated in the opposite direction to give oli the ribbon. ltwill also be seen that the controlling mec-hanisin Will now be operated; Y With respect to drum 6 as the cord 4S) willv 110W be Wound upon the conical drum 44 ar fl taken from the conical drum 45 and when the inertia of the drum 6 Iwould give it a tend-- encyrto travel beyond the movement of the drum 7 such movement will be checked by rcasonoi` the fact that cord 49 will be given ed the drum 45 to the drum 44 only as the drum 45 is rotated by reason of its positive connection -through shaft 41, pinions 40 and 39, With the drum 7. In the foregoing specification l have described the preferred iorm of embodiment of my invention, but it is obvious that many changes and variations may be made lby those skilled'- in the art Without departing from the principle of the invention.

iin order that the invention might be fully but W hat l claim is 1 1. ln a typewriter or similar machine, the

combination with `an inking ribbon, of reels or drums on which the ribbon may be wound and controlling means coo eratively related to the reels or drums and avin a variable movement corresponding to t e variable movements of the reels or drums.

2, ln a typewriter or similar machine, the combination With an inking ribbon, of reels or drums on which the ribbon may be Wound and positive controlling means coperatively related to the reels or drums and having a variable movement corresponding to the variable movements of the reels or drums determinedby thewinding of theribbon thereupon.

ln aftypewriter or similar machine, the combination With an inking ribbon, of reels or drums on which the ribbon may be Wound and controlling means .cooperatively related to the reels or drums and having a-'predetermined variable movement corresponding to the variable movement of the reels or drums'.

4. ln a typewriter or similar machine, the combination vth an inking ribbon, of reels or drums on which the'ribbon is adapted to be Wound, and compensating controlling meansembodying rollers or drums and ilexible means adapted to be Wound thereupon, v

cooperatively related to the said reels kor drums on which the ribbon isadapted to be Wound,

5. ln a typewriter or similar machine, the combination with an inlring ribbon, of reels or drums on Which the ribbon is adapted to be wound, and controlling means embodying rollers 'or drums and flexible means adapted to be wound thereupon, cooperatively related to and having a variable movement corresponding to the variable movement of the reels or drums, on which the ribbon is adapteo to be Wound.

6. in a typewriter or similar machine,'the

combination With an inlring ribbon, of reels Vor drums on which the ribbon may be Wound,

and compensating means for controlling the reels or drums.

7. ln a typewriter or similar machine, the combination with an inlring ribbon, of reels or drums on which the ribbon may be Wound,

and positive compensating means for controlling the reels or drums. f

8. ln a typewriter or similar machine, the combination with an inlring ribbon, of reels or drums on Which the ribbon is adapted to be Wound, and controlling meanshembodying drums provided with conical Windmg .portions on which a flexible member or cord 1s adapted to be Wound, coperatively related to each of the said reels or 9. in a typewriter or similar machine, the

combination Witl'i'andinliing ribbon, oireels or drums on which theribbon is adapted to be wound, and'controlling means coperatively related to said reels or drums and em bodying winding drums provided with conical winding portions and a flexible member connected at its ends to the conical winding portions.

10. In-a typewriter or similar machine, the combination with an inking ribbon, of reels ordrums on which the ribbon is adapted to be wound, and cont-rolling means coperatively related to said reels or drums and embodying winding-drums provided with conical 'winding portions having their corresponding surfaces oppositely dis osed in re* lationto each otherand a flexible member connected at its 'ends to the conical winding portion. l

` f 11. In a typewriter or similarmacliine, the

combination with an inliing ribbon, ofreels orv drums on which the ribbon is adapted to be Woundprotatable shafts operatively connected to each of said reels or drums, conical winding drums on each of said rotatable `shafts and a flexible memberI connected to the conical winding drums.

- '12. lIn a typewriter or similar machine, the

' combination with a supplemental inlring ribbon, of reels or drums on which thesupple- 'mental ribbon is adapted to be wound, and

`bewon'inl, cooperatively related to the said reels or drums. .115; ln a typewriter' or similar machine, the 'combination with a supplenunl al inloop' ribbon, of reels or d ruins ou which the ribbon is and secured :1t its other end adapted to be wound, and mnlrolliinr .ini-,ans

coperativelyv related lo ilu said reels or drnina'inbodying rotatable shal'is operalti'vel T connected to said reels or drums a con ical winding drum .lined to one ol' the shal'ts, anconial winding' druin loosely mounted to rotat`eon the other ol' the sind rotatable "shafts, a helical spring encircling the lost said shalt and attached al one rnd thereto to the said loosely mounted windii'ie drum, :uid a ilexible member secured at itsl ends io thi` said conical windingJ drums.

' seas ov 16. In a typewriter or similar machine, the combination with a supplemental mkmg ribbon, ot reels or drums on which the supplemental inking ribbon is `adapted lto be' cured thereto by elastic means, and a Vilegible member connected to the said conicalwinding drums. i

17. In a typewriting machine, the combination of a paper feed carriage, brackets mounted at the ends thereof, a' shaft mounted in said bracketsrauxiliary ink ribbon spools carried on said shaft, and means cooperatively. related 'to the said shaft and to the auxiliary spoolswhereby when one 0i the said spools is locked to rotate with the shaft, the' other is Jfree to rotate thereon.` y

18. In an attachment 'for typewriters and similar machines, the combination with a cylindrical platen, and mechanism for feeding the paper over the type line on such platen, of a supplemental ribbon, reels or d ru'ms on which said ribbon is adapted to be wound, a rotatable member on which the reels or drums are carried, mechanism for operating the said cylindrical platen, means by which the said rotatable member is operated by the said platen operating mechanism, and means cooperatively related to the rotatable member and to the reels or drums whereby when one of the reels or drums is locked to rotate with the said member the other is lree to rotate.

1 9. ln a typewriter or similar machine, the combination with a paper feed carriage, and a cylindrical platen, oi a supplemental hiking ribbon, reels or spools on which the said supplemental inking ribbon is carried, a rotatable shalt supporting` lsaid spools or reels, mechanism adapted, to imparta synchronous movement to tho said cylindrical platen and to the said rotatable shalt, and locking means cooperatively related to the rotatable shalt and to the said reels or drums 'whereby n hen one ol the reels or spools .is locked to roico tate with the shalt, the other is 'free to rotate lhereon. v

' 20. ln a ty}')ewriter or similar machine, the rombiiiation with a paper leed carriage, and a cylindrical platen, ol a supplemental inliing ribbon, a rotatable shalt supported on the said paper iced carriage being` journaled therein. approximately parallel with the said platen and having,r the extremities thereof extending beyond the ends oi the platen, reels or spools adapted to carry the sind snppleinental hiking ribbon secured to the-extremities ol" the said rotatable shaft, mechanism adapted to im art a synchronous movement to the said cy indi-ical platen andto the said rotgtable shaft, and locking means col twu 'Subscribing Wltnesses, on this`28th day operaivi elated io the,rottsadble shaft arid ,l of February A. D; 1907. to the r'e-es of drums whereby when one of yf 'the eels or spoos/is locked to rotatethe 5 shaft, the otheljfis free t rotate. I f Vtlesses:

In testimony whereof havel signed my f C. H. SEEM, name to this specification, theprsence of A, 1 ApL. SPRINKLEr Y FRED P.G0R1N.

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