US964878A - Type-writing machine. - Google Patents

Description

S. NIELSEN.

TYPE WRITING MACHINE.

APPLIGATIOR 211.21) 12.29, 1910.-

Patented July 19, 1910.

IRA/ENTER:

v I M HISATTDRNEY WITNEEISES:

S. NIELSEN.

TYPE WRITING MACHINE.

APPLICATION FILED APLZQ, 1910.

6 BHEETS-SHEET 2.

INVENTEIR.

Patented July 19, 1910.

NITNESEIEE:

HISATTDRNEY ianvr S. NIELSEN.

TYPE WRITING MACHINE.

APPLIOATIOH rum) APB.29,1910.

954,8-78 Patented July 19, 1910.

6 BHEETB-SHBET 3.

. g A W H15 ATTEIRNEY.{

S. NIELSEN.

TYPE WRITING MACHINE.

APPLICATION rum) APEJQ. 1am.

Patented July 19, 1910.

5 SHEETS-SHEET 4.

g INVENTDR,

WITNE'EEES a HISAT-TDRNEY 1 sisihli S. NIELSEN.

TYPE WRITING MACHINE.

urmcnzon rum) 3.29. 1910.

Patented July 19, 1910.

5 EXISTS-SHEET 5.

' HIS ATTBRNEY UNITEDSTATES PATENT OFFICE.

STEFANUS NIELSEN. 6F NEW YORK, N. Y.,

ASSIGNOR T0 UNION TYPEWBI'IEB COMPANY. OF ILION, NEW YORK. A CORPORATION OF NEW YORK.

TYPE-W'BITIN G MACHINE.

Specification of Letters Patent. Patented July 19, 1910.

' Application filed April 29. 191 0. Serial Ha. 558,439.

0 n I tion is to provide means for enabling the ribbon to be used substantially throughout its entire width in that class of machines where the ribbon .is vibrated at printing operation, and particularly as shown in the present instance in machines which employ a shiftable platen.

Another object of myinvention is to provide for dispensing at will with the automatic cross feeding or variation in the throw of the ribbon and to provide instead for throwing the vibrating ribbon predetermined extents in order to make use at pleasure of ditl'erent ribbon fields and )articularly'in machines which employ a sliiftable platen.

Other objects will hereinafter appear.

To the above ends my invention consists in the features of construction. combinations of devices and arrangements o parts hereinafter described and particularly pointed out in the claims.

My invention may be carried out. in various ways, one of which is shown in the accompanying drawings, wherein Figure 1 is a vertical front to rear sectional iew of so much of a front-strike typewritihg machine as is necessary to a clear mulerstamling of my invention. Fig. 2 is a front elevation partly in section of said machine. Fig. 3 is a perspective view of certain of the ribbon controlling devices to which my invention more especially relates. said devices including a shiftable frame. Fig. 4 is a plan view of said shift able frame and of an eccentric which is adapted to control the same. Fig. 5 is a view partly in section of said eccentric and its support. Figs. 6 and 7 are vertical sectional views showing in ditl'erent relationships the ribbon controlling devices of Fig. I5 and associate parts. Figs. 8, 9 and 10 are operating views showing in side elevation and partly in vertical section, the ribbon vibrating mechanism and associate parts, the mechanism appearing in different relationshi is in the various views. Fig. 11 is a side e evation of certain hand actuated devices for setting the. ribbon controlling de-- vices. Fig. 12 is a diagrammatic plan view of the mechanism for feeding the ribbon longitudinally.

In various of the views parts are omitted and [)tll'lS broken away.

My invention is shown adapted to a machine which is substantially like the No. 10 Remington typewriter but it is to be un derstood that said invention may be applied -to other styles of writing machines.

In carrying out my invention I provide a ribbon vibrator or carrier which occupies a single normal position and which is thrown diti'erent extents to bring different widthwise portions" of ribbons into use, the extent of throw being increased when the platen is shifted. in order to compensate for the changed position of the printing point.

As appeals in Figs. 1 and 2 of the drawings the main frame of the machine comprises a base 1, corner posts 2 and a top plate 3. Said top late .zlpports fixed grooved trackways 4 w iich provide bearings for antifriction balls 5, said balls also cooperating with grooved front and rear bars 6 and 7 of a carriage which further comprises end bars 8, said end bars being connected by links 9 with a shiftable platen frame or carrier 10 which supports a cylindrical platen 11. A roller 12 is mounted on the platen carrier below the platen and 00- operates with a shiftable guide rail 13, which is part of a shift frame comprisin vertical side bars 14 and a cross rod 15. be lower ends of the bars 14 are each pivotally connected to a shift lever 16 mounted on a rock shaft 17 and provided with a key 18 depressible to operate the platen shifting means and so raise the platen carrier and platen to upper case position, the shifting movement being independent of the carriage proper.

Key leveis ltl a're the rear of the base 1 and are connected with type bars (not shown) which are adapted pivotally mounted in to cooperate with the front face of the platen ll. universal bar .20 underlies the key levers and is connected by links 21 with crank arms '22 fixed to a rock shaft '23 near the ends thereof, said rock shaft having fixedbcarings at the sides of the base 1. The carriage connected by a band or strap (not shown) with a spring drum 2% (Fig. 12), which iinpels the carriage step-b tep during the printing of the lines of writing. the step-by-step movement being controlled by escapement devices (not shown) which are connected with the rock shaft 23 and operated when the univer al bar 20 is actuated by the key levers 19.

A ribbon 25 is wound on vertical ribbon spools 26 one arranged at each sideot' the machine below the top plate, each ribbon spool being secured at the forward end of a horizontal rearwardly extending shaft 27. In order not to confuse unduly the main sheets of drawing, the means for feeding the ribbon longitudinally is separately illustrated in the diagrannnatic plan view (Fig. 12). As shown in this figure, each shaft 27 has secured to its rear end a beveled pinion 28 which is adapted to mesh with a beveled pinion 25) secured to a driving shaft 30 connected by beveled pinions 3i and 32 with the spring drum "2% in such a way that the shaft is turned by the spring drum as the latter moves to advance the car iage in printing direction. The shaft 30 is movable endwise independently of the pinion 31 which has a sliding connection therewith, the endwise movement of the shaft. being preferably etl'ected automatically and operating to'connect the pinions 2:) alternately with their associate pinions 28 so that: the ribbon may be fed alternately back and forth from one ibbon spool .26 to the other.

IiIidway between the ribbon spools the ribbon is threaded through an upright vibratory ribbon carrier or vibrator 33 which is supported and guided on a guide 34 fixed to the frame of the machine. The lower end of the vibrator carries a 'cross pin 3:) which is engaged by the slotted forward end of an operating lever 36 pivoted at 36 to a bracket 36 fixed to the top plate. The rear arm of the lever 36 is formed with an arcuate slot 37 which is engaged by a pin 38 extending laterally from the top of a vertically disposed link 39, the lower end of said link being pivotally connected with the horizontal arm of a.bell crank lever 40 pivoted at -11 toa. bracket. 42 screwed to the top of the case -1 at the rear thereof. The downwardly extending arm of the bell crank 40 is pivotally connected by a horizontally disposed and forwardly extending link 43 with a crank arm 44 fixed to and rising from the rock shaft 23. A coiled spring 45 connects the. link 3!) with a pin 46 fixed to the bracket 42, said spring constantly urging the link 39 rearward and tending to maintain the pin 38 at the rear of the slot 37. The construction is such that a depression of one of the key levers 12 will act on the universal bar 20 to rock the shaft 23 rearward. causing the link 4 to act through the bell crank it) on the link 3!) to pull said link 22!) down ward, thereby actuating the lever 3G and causing the forward arm of the latter to rise and lift or throw the vibra tor 33 upward so as to bring opposite the printing point on the platen the printing portion of the ribbon or that. portion which is between the bifurcations or arms 33* comprised in the head of the vibrator.

Obviously the extent of throw of the vibrator may be varied by varving the re lationship between certain of the vibrator actuating devices aforesaid. In the present case the point of operative engagement between the pin 38 and the slotted lever 36 is varied. thus changing the widthwise portion of the ribbon presented to the types.

Means are-provided for automatically and progressively moving the link 39 and cansmg the pm 38 to move step-by-step toward and away from the pivot 36, with the result that the throw of the vibrator is automatically varied so as to change progressively the widthwise portion of the ribbon presented to the types. \Vhen automatic means of this character are employed, it is commonly in connection with a ribbon of uniform character, and not a ribbon of dual character like the ribbon 25 shown-herein. Said automatic means comprises in the present instance c entric devices which are connected with and operated by the ribbon drivmg shaft 30, said devices communicating a rec procatory movement to a cam member which operates during movement in one direction to swing the link 39 forward and which, during its ret urn movement, permits the spring 45 to swin the link 39 rearward (see Ifags. l to 5). said eccentric devices comprise an eccentric member 47- having an eccentric wr-king face 48 and at its lower end a concentric neck 49. The eccentric member is slidably mounted on a vertical shaft- 50 but is forced to turn with said shaft, the connection between the two comprising a spline 51 fast on the eccentric and which engages a longitudinal groove 52 in the shaft 50. Said shaft is supported on an angular bracket 53 depending from the under. side of the top late and is held from dropping out of sai bracket by the hub 54 of a beveled pinion 55 which is secured to the upper end of the shaft 50 above the horizontal arm of the bracket Said beveled pinion meshes with a beveled pinion 56 fixed to the driving shaft 30, which shaft passes through an opening in the vertical arm of the bracket 50. The beveled pinion 56 is provided with a hub 57 which is splined to the shaft 30,

the construction permitting endwise-movement of the shaft independent of the pinion. Rotary movements are connnumcated from the shaft through the pinions 5t; and 53 to,

the shaft 50 and the eccentric member. A leaf spring 53 seeurul lo the bracket 53 acts against the eccentric member. tending constantly to press it dowmvard and to maintain the lower end of the spline 51 in contact with a limiting pin .3!) at the lower end of the shaft 50 (Fig. 5).

Vl'hen the eccentric member is in its lowest position the eccentric face 48 cooperates with opposite interior faces of a rectangular opening formed in the head (31 of a reeipromitory frame 61h said frame further comprising a pair of depending ears (.3

' formed with be tring' openings which engage with a short supporting rod (34. Said rod is secured at its ends by a pin (35 t0 the parallel ears (it) of a stationary bracket (37 which further comprises a cross bar (36 connecting the ears (as and also an upright extension (is on the left-hand ear. said extension being secured to the under side of the top plate 3. Hearing on the rod ("4 and confined between the ears 63 is a sleeve (39 which is part of a cam member 70, said cam member further comprising an arm I1 inclining downward and forward from the sleeve aml having at its lower end a laterally disposed cam proper T2. The cam 72 inclines upward and leftward from its point of connection with the arm 70 and terminates in a horizontally disposed portion 73. A vertically disposed ear 74 extends forward from the. left end of the portion 73 and is provided with a lateral pin 75. which pin engages in a slot 76 at the rear end of an arm 77. said arm curving downward and rearward from the cross rod 15 and being provided with a hub 78 which is secured to said cross rod so that the arm 77 will shift with the platen shifting frame and will act through the pin and slot connection 75, i on the cam member 70. cansing said cam member to turn on the rod 64 as a center. The forward edge 72 of the cam 7:2 ltlt'llllts forward froni right to left or fore and aft of the machine and is adapted to co-act directly with the link 39.

During the printing movements of the carriage the driving shaft 30 will turn and conunuuicate rotary movements to the eccentric member. causing the eccentric face 48 to co-act with the left-hand and righthand inner faces of the opening tit) so as to move the frame (32 rogressively along the rod (54 first in one direction and then oppo- 'sitely, the extent of back and forth movement corresponding with the throw of the eccentric 45. as will be understood from a consideration of the full and dotted line positions of the head til and ccc ntric 48 shown in Fig. 4. The front and re 1' inner faces of the opening 60 are far enough apart spring 45. As a result the 'pin its will operate at the rear end of the slot 37 and will throw the vibrator upward to present the upper edge portion of the ribbon to the types at printing operation. During subsequent printing operations the eccentric 4s will operate on the frame (32 to slide the same rightward along the rod (34 until the dotted line position indicated in Fig. 4 is reached. after which the return movement; of the frame will take place. As the frame (32 slides rightward it operates to slide the sleeve 69 rightward along the rod ti-l. thereby causing a rightward movement of the entire cam member 70. the cam edge 7:! acting against the link 35). swinging the same forward against the pull of the spring and moving the pin 38 forward in the-slot 3T. 'hen the rightward limit of movement of the cam member is reached. he forward edge 7:? of the portion 73' will be in engagement with the link 39 and the pin 38 will be in the position shown in Fig. ll. The result of the progressive movement of the pin 38 will be that the throw of the operating lever and ribbon vibrator willgradually increase and the points at which the type impressions occur on the ribbon will gradually approach the bottom edge thereof. During the return movement of the cam member the linlt 3!) will be swung back by the spring 42 as the cam edge 72" moves leftward. and consequently the pin 33 will again approach the rear end of the slot 37. Durin the change of the ribbon widthwise it. is also being fed lengthwise from spool to spool so that the result will he that the type impressions will follow a serpentine course lengthwise of the ribbon from one edge to the'other.

During the back and forth movements of the cam member the. pin 75 will move to and fro transversely of the slot 76 without disturbing the arm 77: but so that the connection between the pin and slot will be always etfectivc to cause the cam member to swing upward whenever the platen is shifted to upper case position. The effect of this upward swing of the cam member will be discnssed after the operation of the mechanism for two-color work. or similar work,has been explained.

\Vhen a ribbon like 2.), which is divided longitmlinally so as to provide two fields or stripes (1 aml b of diti'crent' characteristics. such as ditferent colors. is-to be employed. the. automatic mechanism comprising the eccentric 48 is preferably thrown out of operation and the link 39 is set by hand in either one of a plurality of predetermined positions so that the vibrator may be thrown predetermined extents at pleasure in order to present either of the fields a and b to the types. The means for carrying out the e operations comprise a shift frame T9 which is clearly shown in Fig. 3 and also appears in Figs. 1, 2. 6 and 7. The frame 79 is U- shaped, having opposite parallel arms 30 connected at one end by a cross piece 81. The arms 80 pass through pairs of narrow parallel vertical slots (33 in the frame cars (33. Said arms 80 are sup orted by the bracket 67. engaging in para lel guide slots 82 formed in the ears 66 of said bracket 67.

. 'The armsSO are movable back and forth in said guide slots transversely of said ears when the shift. frame 79 is reciprocated by hand. The frame 62 and the shift frame T9 are movable together and also relativeiyho each other as hereinafter more fully explained. Pairs of pins 83 and 84 on said arms 80 are adapted to contact with the outer faces of the cars 63 to move the frame 62 and also limit the extent of back and forth movements of the frame The guide slots 82 are wider than the slots fl! and the pins 83 passfreely through the slots 82 but not through the narrower slots. (33. The arms are cut away or notched as indicated at 85, the sides 86 and S7 of each notch being oppositely inclined and the bottom 88 of each notch being horizontal.

Suitable connections ctmvenientlv controlled from the front of the machine are provided for shifting the frame 79. Such connections are shown in 2' and 11 and comprise a rod 89 adjustably secured to the cross piece 81. said rod extending rightward and being provided with a pin '90 engaging a slot 91 iii an upright crank arm 92 fixed tcf'a rock shaft 9 3. Said rock shaft has a bearing 94 fixed to the base 1 at the righthand side thereof and extends forward through the right-hand front corner post 2, taking a bearing therein. An npwardlvextending arm 95 is fixed to the rock shaft forward of the corner post. said arm terminating in a pointer 95 and being provided with a. finger piece 96 at the front and with a pointed lug 97 at the rear. The lug 97 cooperates with holes 98. 99 and 100 in the. corner post to hold the arm and connected parts in set positions. Suitable indicating marks may be provided contiguous to the holes for coiipcration with the pointer 95. The arm 95 is sulliciently flexible to permit the disengagement of the big 97 from one of the holes and its reiingagcment with another of the holes when the finger piece 96 is operated to rock the shaft 9; Stop. pins 101 on the corner post coi'iperute with the arm 95 to limit. the extent of rocking movement. When the shaft is rocked its movement is transmitted from the arm 92 to the rod 89 and shift frame 79 so that said shift frame may he slid from the Fig. 2 position to the Fig. 6 or Fig. 7 positions.

Suppo e that it i desired to throw out the automatic cro s feed and to print lengthwise of the upper field 1/ ofthe ribbon: then the linger piece 96 is pushed leftward until the lug 9?. after disengaging from the central hole 95. engages with the hole 99. This movement. is communicated to the shift frame 79 and causes the inclined edges 86 to act against the neck 49 of the eccentric member. exerting a ramming action against the latter and sliding it upward on the: shaft 50. at the same time compressing the spring The upward movement of the eccentric member continues until the tops of the inclined edges 86 are reached. after which the under the neck 49 and will hold the eccentric member up out of engagement in the Fig. 6 position.- During this latter-part of the movement the ears S3 may contact with the right-hand car 83 and will force the frame 6:2 leftward. the frame carrying with it. the cam; member 70. The movements of top surfaces of the arms 80 will slide along the parts will be limited by the engagement of the frajme 72 with the left-hand ear 66 as shown in Fig. 6. At this time the link 39 will he engaged with the front edge of the arm 71 so that during subsequent actuation of the printing keys the vibrator will receive its least extent of throw from normal position and the ribbon field a will be presented to the types, the type impressions following a straight course longitudinal of the upper field a.

If it should be desired to print. longitudirally of the. lower ribbon field I) the finger piece 96 is pushed rightward to the limit of its movement. causing the in 97 to engage with the hole and sliding the frame "4'9 from the Fig. 6 to the Fig. 7 position. During this movement of the slide frame the eccentric member. after sliding down the edges S6. will be cammcd up to the top edges of the arms 80 hr the inclined edges 87 and tli'e framc 6:? will he slid rightward by the pips 84 carrying with it the cam member 70 iuitil the link 39 engages with the forward edge-of the portion 73 of said cam member aslsb'own in Fig. 7. This sets the link 39 foii'iward in the Fig. 9 position and causes it,

when pulled down. to lift. the vibrator to present the lower ribbon fields 7) to the types. The eccentric member may be restored to operation so as to again provide for cross feeding the ribbon by resetting the-arm 395 anti the parts controlled thereby 1n; the F ig.

2 position.

.\s has been stated. the pin and slot cou- 'ncction 75. 7G is always ctl'cctire to swing the cam member T0 upward on the rod (it asa ccntcr whenever the platen is shifted to upper case position, and vice versa. It will be apparnf'that when the eam memher is f thus swung upward the link 35) will be swung forward and the pin 38 will be reset at a new position in'the-slot 37 but without after-ting the operating lever or the vibrator. \Vltit'll have the saute normal position for both positions of the platen. The purpo e of this resetting movement is.- of eoarse, to increase-the throw of the vibrator to eompensate for the shiftin g of'tbe platen. so

' that the types may print on the saute widthwiseport1on of the rihbon in the upper ease f position of the platetras when the platen is t in the lower use po ition. The extents of! this rompen atory inerease in.throw must 'ary at'eording to the lower ease posit-ion oeeupied by the pin 36 in the slot 37 at the time the. platen shift oeeitrs. If the eotnpensatory -hange or shift of the pin 38 ere always the same in extent the eompensatory ehange or throw of the-vibrator and ribbon -wonld not be uniform but would vary as a result. in order to provide for the proper extent of eompensatory shift in whatever. position the link 3!) may happen to be.- have resorted to the expedient of inclining i g the ram proper T2 in a direetion from top to bottom of the maehin as de eribeth (onsequently as the point of eontat't of the link 3!) with tillfi'tllll member approaehes the i I higher part of the latter. the result of ext ia t of shift movement of the link when the V platen is shifted will be less than when the I link just prior to the platen shift is en- 5 gaged with a lot-er part of he eam In t I other words. when the pinilS is farthest from tln fniernni of the ope.ratin; lever said pin will reeeive its greatest eompensatory sh ft and as said pitt moves forward toward the l 40 fulernm of the operating lever its extent of l compensatory shift' will gradually lessen until the pin rear-hes its extreme forward; 7 5 ptr ition for lower ase. at whit-l: time thuf t l tannpensatorv shift (UtttlIltlhiCHtttl to said} l pin will be at a minimum. 'lhese statements 5 I will perhaps-lw elearer from a eonside-ation v of an example or two. Suppose first that'at the time the'platen shift oerurs the parts are in the relationship shown in Fig. l with the -am membeat the lowest point,of its downward swing and the link 39 in its rearmost position with the pin 38 at the rear of r the. slot 31' Then when the platen is shifted the arm I? will move upivard and will swing the ram member forward and upward on its pivot. thus'forring the link 3!) forward and shifting the aetuating pin 38 to a net" position in the slot 37. The parts will now be i in the position shown in Fig. 8. Compar- 9 ing Figs. 1- and 8 it will he observed that the i-ompensatory shift has earried the pin ili's well toward-the front end of the. slot 23?. this romparatively great extent of movement of the pin being due to the fart that the for- 55 ward edge of the arm it with whieh the link I i i t l I l l l able extent at the same time.

hand. eomparm; Figs. 9 and It). \tittt'll may' 39 is in eontact in swinging upward to its new position will also move forwatld a eonstder- ()n the other he considered as representing respeetively the lower (:IH. and upper ea e positions of the parts when the pin It is nearest the fulernm of the operating lever. it will be seen thatthe rompensatory shift of the pin is much less. owing to the fart. that although the forward edge of the part 73 'illtlt is in control of the link 39 has the same extent of angular imivement us the arm 71, yet. nevertheless. said part 72, has a murh less movement forward dttrin; itsupward swing.

o\vin; to the fart that it is nearer the horizontal and moves upward mueh more rap- -idl v than it moves forward. On the other hand. in the "use-of the arm 71 its forward movement is almost as rapid as its upward movement.

'It will .be seen that I provide a simple illttl tliitfitltl eonstrnetion for enabling-a vibratory ribbon to be shifted from a single normal position to compensate for the platen shift; that the ribbon may be 'ariably thrown for cross-feeding; that the crossfeeding may be dispensed with and the parts set to throw the ribbon diti'erent predetermined extents: aml that. the eo npensating shift does not interfere with the proper operation of the variable throwin; means or the predeterminetl movements of the ribbon.

Various ehanges may be nnrde without departing from the seo pe of my invention.

'hat I elaim as new and desire to secure by Letters Patent. is:- 1. In a typewriting maehine, the eomhination of a platen. shifting means therefor. a ribbon 'tlll'ilt l', tneaus .for vibrating the same inehnlin; a link, a cam operative on said link to vary the. aetitin of the vibrating means. and eonneetions between said "am and said sliif tin, means.

:2. In a typewriting maehine, the eombination of a platen. a key ope 'atetl frame for shifting the same. a ribbon vib -;tto1-,, pans for vibrating said vibrator ineluding a link, a eam'operative on said link to vary the aetion ot 'the vibrating means. and an arm on said frame having a pin and slot eonneetion 'with said am.

1. ln'a typevn'iting machine. the eombination of a platen. shifting merbanism therefor. a ribbon vib'ator. means for vibrating the same-inehnling a link. a ram operative on said link to vary the'aetion of the vibrating means, and eonnei-tions between said ram and said shifting means. said ram being movable independently of said shifting means to vary the aetiou of the vibrating means.

4. In a typewrltmg maelnne. the (UtltlHlHltion of a platen. shifting to ans therefor. a

ribbon vibrator. artuatinj: lttttlts for said to operate on said devices.

vibrator, a slidable cam operative to vary the action of said actuating means. an arm on said shitting means provided with :1 latcral pin, and a connection to said cam having a slot engaged by said pin.

- J. In a t \'pewriting machine, the combination of a platen. shifting means therefor, ribbon vibrating devices, means for varying the action of said vibrating devices including a slidablc member. and means connected with said shifting means for swinging said member pivbtally.

(5. In a typewriting machine. the combina-' tion of a platen, shifting means therefor, a ribbon vibrator, actuating devices for the same, ribbon feeding means, a member oper ative on certain of'said devices to vary the action thereof, means connected with said ribbon feeding means for moving said member slidably, and means connected with said shifting means for swinging said member pivotally.

T. In a typcwriting machine, the combination of a platen, shifting means therefor, ribbon vibrating devices including a link, ribbon feeding means. a cam slidable by said feeding means and operative to shift said link, and connections between said shifting means and said cam for pivotally turning said cam.

In a t vpewritiug machine, the combination ol :1 platen, shifting means therefor, ribbon vibrating devices, ribbon feeding means. a cam member cooperative with certain of said vibrating devices, connections between said cam member and said shifting means, and connections between said cam member and said ribbon feeding means, both said onnections actuating said cam member i l l 9. In a typcwriting machine, the combination of a platen, a ribbon vibrator, actuating devices therefor including a lever and a link, automatic means including a cam for varying the relationship between said lever and said link, and connections between said cam and said platen shifting means.

a 10. In a typewriting machine, the combination of a platen, platen shifting means, a slotted operating lever, 21 key controlled actuating link engaging the slot in said lever, an automatic cam operative on said link to change its position, and connections between said cam and said platen shifting means.

11. In a front-strike typcwriting machine, the combination of a platen, platen shifting means, an upright ribbon vibrator, a horizontally disposed operating lever provided with .a slot, a vertically disposed actuating link engaging said slot, key controlled devices with which the lower end of said link is pivotally connected, automatic means for swinging said link on its ower end as a pivot, and connections between said automatic mean and said platen shifting means by which said link is swung pivotally when the platen is shifted.

, means. an upright ribbon vibrator, a horizontally disposed operating lever provided with a slot, a vertically disposed actuating link engaging said slot, key controlled devices with which the lower end of said link is pivotally connected, automatic means for swinging said link on its lower end as a pivot, and connections between said automatic. means and said platen shifting means by which said link is swung pivotally when the platen is shifted, said automatic means comprising a cam that is movable slidably and also pivotally.

13. In a front-strike typewriting machine, the combination of a platen, platen shifting means. an upright ribbon vibrator, a horizontally disposed operating lever provided with a slot. a vertically disposed actuating link engaging said slot, key controlled devices with which the lower end of said link is pivotally connected, automatic means for swinging said link on its lower end as a pivot, and connections between saiu automatic means and said platen shiftin means by which said link is swung pivotall y when the platen is shifted, cams having an edge inclining in a direction fore and aftof the machine, said edge having also an inclination from top to bottom of the machine.

14. In a typewrit ng machine, the combination of a platen, a ribbon vibrator, an ops crating lever, a bell crank lever, a link connccting said operating lever and said bell crank lever, a second bell crank lever, 21 second link connecting the two bell crank levers, key levers, a universal bar operative by said key levers, and connections between said universal bar and said second bellcrank lever.

15. In a typewriting machine, the combination of a platen, platen shifting means, a ribbon vibrator, actuating devices therefor, automatic means including a cam operating directly on certain of said actuating devices for varying the action of said actuating devices, and connections between said automatic means and said platen shifting means.

16. In a typewritmg machme, the combination of a platen, a ribbon vibrator, actuating devices therefor including a lever and a link, a cam operativedirectly on said link to change its relationship with raid lover,- and connections between saidcam and said platen 'shifting'means.

17. In a ty )ewriting machine, the combination of aplaten, a ribbon vibrator, actu= ating devices therefor including a lever and a link, a cam operative either automatically or by hand at will and acting directly onv said link to change its relationship with said lever, and means connected with said platen shifting means. said platen shit tin; means. when aetttated. operating said means.

19. In a typewriting. maehine. the eoinhination of a platen. platen shifting means. a ribbon vihrator having. a single normal po- 1 .Sition. aetuating de iees therefor, a nieniher for ehanging the reiationship hetween eertain of said aetitatin; devil-es. means for aetitating said member independently of said platen shifting means. and eonneeiioiis hetween said menilie and said platen shifting means for aetnatiii; said inen her when the platen is shifted.

:30. In a t vpewritin inaeliiiie. the eoniliination of'a platen. platen shitting: 1iieaiis. a rililion Yllit'tt'ittt"lltlvlll fl' a single normal pos'ition. variahle aetnating deviees for said rilirator. and means eonneeted' with said piaten shifting means for variably shifting eeitain of said deviees when aid platen isshifted. p

21. in a typevvritin; niaehine. the eoniliination of a platen. platen shifting means. a i'ililion vilirator having a single llut'jllill position. aetiiatin; deviees therefor int-hiding a link. means ltlt'lttilitlg a inemlier for normally eliaiigini. the position of said link. and eoiim tions between said niemlier 'and said platen shifting means for variiilily iiioviitg said link when the platen is shifted.

22. in a t \'pewriting iiiaehine. the combination 'of a platen. platen shifting means. a

. rihlinn vilii'ator. aetnating deviees therefor illtilltllltg' a link and a lever. means for rhanging the relationship lietweeii said link and said lever to var the throw of said vi lirator. and means eonneeted with said platen shifting means for relatively shifting said link and said, lever vtii'ialile extents.

:23. in a typewriting iiiaeliine. the eoinliination of a platen. platen shittiii; means. a rililion vihrator. mutating deviees therefor iiielndin; a link and a lever; means for rhangin; the relationship bet ween said link and said lever. and means eonneeted with said platen shifting means for relatively shifting said link and said lever variable exi v alive by said driving shaftfor (hanging the tents. the amount of relative shift depeudin; on the t'elationship between said link and said leve' at the time said shift oeenrs.

24. In a typewi'iting maeliine. the eoniliil t l i nation of a platen. platen shifting means. a rihlion viln'ator. Itt'tllttllltfl tltVII'ts' tlieieiorl v t lllt'ltttllllg a lttllt and a rY'il'. antomatieallv aetin; means for eliaiiging lt'|)-lI \'-.-lt[! the relationship hetween said link and aid lev r. and means operative h said platen shifting: means for relativeli' shifting said link and said lever. the amount of ueh relative shitting. lieing variahl and depending on the relation hip hetween said liiik and i said lever at the time the shift takes plaee.

"1-3. in a (y n-writing niaehine. the eoinhination of a platen. platen shifting meaiis. a riliiion iliratoi'. an operatin; lever therefor. a key operated aetnating link eonneeted to said lever. means operative on said link to ehange its relationship with said lever. and means ope 'ative l) said platen hifting means for shifting said link relatively to said level. the extent of shifting movement of -said iink varviiig aeeording to the relation ship hetween the link and the lever at the tim the shift takes place.

243-. In a typewritin; inaehine. the eoniliinati n of tl.-lil:tttll. platen shifting means. a rililion \ilit'iittit'. an operating! lever therefor. a key operated aetuating link eonneeteti to said lever, 'hand (millfillttl means for setting said link in.aii v one of a plurality of predeteritiined relationships with said lever. and means eoiineeted with said platen shifting means for varialil v shifting aid link relatively to said lever.

2?. in a typewriting maehine. the eomliination of a platen. platen-shifting means. a rililimi ilirator. an operating lever therefor. a ke ope 'ateil aetitatiiit. link tfllilltt'itll to said lever. hand eontrolled means for setting said link in any one of a plurality of predetermined relationships with lever. and means eonneeted with said platen shifting means for variably shitting said link relatively to said lever. the extent of the shifting movement of said link varying with the predetermined relationship bet ween said link and said lever at the time the shift takes plaee. 7

28. In a t vpe\v itin; machine. the eoinhination of a platen. a rihlioii vilirator. aetuating devices therefor. a rihlion driving shaft. and means operative liy said driving l'elationship lit-tween eeitair. of said arttiatin; deviees. said in -aii's ineltiding an eeeentrim a frame progressively inovalile hack and forth li v said eeeentrie. and a rain ineinher progressiu-ly movahle by said frame.

.30. in a typewriting Htttt'll lllt. the (Qtllhh nation of a platen. shifting means for the platen. a ribbon vih'ator, at'tttating deviees therefor, rililioii feeding meelianism for vfi feeding the ribbon longitudinally including a driving shaft, and means operative by vices, said means including an eccentri slidable connection between said cant memher and said platen shifting means.

31. In a typewriting machine, thearhmbii nation of a platen, a ribbon vibrator, a tuating devices therefor including a link, a ribbon driving shaft. an eccentric connected therewith, a frame controllable by said eccentric, and a cam member operative on said link and connected with said frame.

32. In a typewriting machine, the combination of a platen, a ribbon vibrator, actuatin f devices therefor including a link. a ribbon driving shaft, an eccentric connected therewith, a frame controllable b said ectcentric, a cam member operative on said link and connected with said frame, and manually operated means for ret-idering said eccentric inoperative and for setting said cam member.

33. In a typewriting machine. the combination of a platen. a ribbon vibrator. actualing devices therefor including a link, a ribbon driving shaft, an eccentric connected therewith, a frame controllable by said eccentric, a cam member operative on said link and connected with said frame, and manually operated means for rendering said eccentric inoperative and for setting said cam member, said means comprising a shift frame slidablc elatively to said first named frame and also operative to move the latter.

34. In a typewriting machine, the combination of a platen, a ribbon vibrator, actuating devices therefor including a link, a ribbon driving shaft, an eccentric connected therewith, a frame controllable by said eccentric, a cam member operative on said.

link and connected with said frame, and

- manually operated mean for rendering said eccentric inoperative and for setting said am member. said means comprising a shit't frame slidable lel:tti\t'l to said tirst named frame and also opcrati\e to move the latter,

said shit't frame being provided with canr notches operative on said eccentric to mine it out of said first named frame.

3-1. In a typewriting machine, the combination of a platen, a ribbon vibrator, actuating devices thcrct'or including, a link, a ribbon driving shat't, an eccentric connected therewith, a frame controllable by said eccentric. a cam member operative on said link and connected with said frame. a hand controlled shift frame for disconnecting said eccentric from said i'irst named frame and for subsctptc-nttv moving said first named frame to set said cam member in any one of a plurality of predetermined positions.

36. In a typen'riting machine. the combination of a platen, platen shifting means,-

a ribbon vibrator, actuating devices therefor including a link, a ribbon driving shaft, an

eccentric connected therewith, a frame contrdllablc by said eccentric. a cam member operative on said link and connected with said frame. a hand controlled shiftframe for disconnecting said eccentric from said lirst named frame and for subsequently movin; said first named frame to set said cam member in any one of a plurality of predetermined positions, and constantly maintaint-d connections between said cam member and said platen shifting means.

Signed at the borough of .\'lanhattan, city of New York. in the county of New York. and State of New York, this 28th day of April, A. D. 1910.

' STEFAN US NIELSEN.

.Witncsses:

E. M. \VicLLs, M. F. liA'sxwianrn.

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