US1700826A - Typewriting machine - Google Patents

Description

Feb. 5, 1929.

H. A. AVERY El AL TYPEWRITING MACHINE- Filed Nov. 13, 1926 3 Sheets-Sheet 1 v Q ww v ATTORNEYS Feb. 5, .1929.

H. A. AVERY ET AL TYPEWRITING MACHINE 3 Shee 'ts-Sheet 2 Filed NOV. 13, 1926 Feb. 5, 1929.

H. A. AVERY ET AL TYPEWRITING MACHINE Filed Nov. 1:. 192's 5 Sheets-Sh'eut INVENTO RS afietermamz ATTORNEYS Patented Feb. 5, 1929.

HENRY ALLEN AVERY, OTTO PETEBIVIANN, AND EDWIN IJ- HARMON, OF GROTON,

NEW YORK, ASSIGNORS, BY MESIIE ASSIGNMENT$, 'IO L 0 SMITH & CORONA TYPE- WRITERS INCL, OLE SYRALUSE, NEW YORK, A CORPORATION OF. NEW YORK.

TYPEWRITING MAGHIN E.

Application filed. November 13,1926. Serial No. 148,254.

T his invention relates to improvements in typewriting machines, and more particularly to ribbon vibrating means for such machine he invention has for its objects to provide means of simple, light and inexpensive construction whereby the ribbon guide may be given different lengths of threw to adapt the machine for use with a bichrome ribbon and whereby the ribbon guide may be rendered inactive to adapt the machine for making stencils; to provide bichrome ribbon vibrating mechanism insuring quick and accurate movements of the ribbon and avoiding bleeding; to provide efficient ribbon vibratin means of the type wherein the ribbon guide par-takes of case-shi t movements of the platen of the machine constructed to insure equal vibratory movements of the ribbon in upper and lower case writing; and to provide ribbon vibrating mechanism particularly adapted for use in a low and compact portable typewriting machine.

To the foregoing and other ends, which will appear from the following description in detail of the preferredembodiment of the invention illustrated in the drawings, the in vention consists in the combinations of parts, arrangements of devices, and features of con stru'ction hereinafter described and particularly pointed out in the claims.

In the accompanying drawings:

1 a vertical longitudinal sectional view, showing the improvements embodied in a low and compact portable typewriting machine of the three-quarter strike class having an obliquely shifting platen. carriage, the parts being shown in normal lower case position, and the segment being omitted and the universal bar being partly broken awa to more clearly show the ribbon guide operating train; 7

Fig. 2 a view similar to Fig. 1, but with the parts in upper case position;

Fig. 3 a detail perspective view showing parts o neans detached;

l 1g. a detail of the case-shift mechan. j

Fig. 5 a detail perspective view of the ribbon vibrating mechanism;

6 a view showing parts of the ribbon vibrating means in perspective and detached;

7 a section on the line 'Z-7 of 8; T .g'. S a section on the line 88 of Fig. l;

sectional view showing parts Figs. 9, l0 and 11 are detail sectional views showing the operation ofthe automatic caseshift-equalizing connection in the ribbon guide-operating train. l

Only so much of the machine as is necessary for a full ul'lderstanding of the construction, operation and advantages of the improved means for vibrating the ribbon at the key strokes and rendering the ribbon inactive when writing stencils has been shown and will be described.

The main frame of the machine comprises a front wall 1, a rear wall 2, side walls 3, and an intermediate transverse partition wall 4% connecting the side walls a short distance forward of the rear wall, said partition wall lying in an upwardly and rearwardly inclined plane with its lower edge above the level of the lower edges of the outer frame walls. An upwardly and rearwardly inclined type bar segment 5 is held against the front face of the partition wall intermediate the ends of said wall, and a key lever fulcrum member 6 is held to the rear face of said wall and is formed with a pair of rearwardly and downwardly extending 'arms 7. The type bars 8 are pivoted in the segment slotscn a pivot wire 5, and the heads thereof are normally supported on a curved rest 9 supported in an inclined plane by brackets held to the main frame walls 3, said rest and segment supporting the type bars in upwardly and downwardly and rearwardly inclined plane perpendicular to the plane of wall 4, withits forward edge normally closely adjacent the upper edge of said wall, and lies entirely to the rear of the plane of the segment. A rearwardly tiltedplaten carriage 12 is mounted on the bed on suitable anti-friction hearings to travel transversely of the machine and shift up and down with the bed. A platen 13 is journalled on the carriage and lies above and in rear of the type bar pivots in position to receive impacts of types on the type bars on its upper front quarter. A pair of guide members 14 connected by a brace rod 15 are rigidly held to the bed to extend downward and forward between the back and partition walls of the frame between a pair of guide members 16 held to the main frame side walls, in inclined position. The sets of guide members are, provided with suitable complementary races for ball bearings 18 and guide the bed and carriage to shift in a plane parallel with the planes of wall 4 and segment 5.

A rock shaft 19 is journall-ed on the frame walls 3, between walls 2 and 4 and behind guides 14 and is provided with a pair of upwardly and forwardly extending rock arms provided with outwardly extending .studs 21 at their forward ends. The studs 21 are engaged in the forked rear ends of a pair of shift key levers 22 and in slots 23 in the guide iii-embers 14, so that when either shift lever is actuated the carriage and bed will be shifted through the rockin of the shift torsion frame (con prising shaft 19, arms 20 and studs 21). The shift levers are pivoted on horizontal pivot screws 24, supported on brackets 10, and extend through slots 25 in wall 4. The normal position of the shift frame (con'iprising bed 11, guides 1'4 and rod 15) is determined by the lower case stops 26 and 27 respectively on guides 14 and brackets-28 held to frame walls 3. The upper case position of the shit frame is determined by the upper case steps 29 and 30 respectively on the guides 14 and brackets 28. Steps 27 and 29 are adjustable.

The action for operating each individual type bar comprises a key lever 31 pivoted on a pivot rod 32 in fulcrum member 6 and extending under wall 4 and to the front portion of the main frame, a bell-crank lever pivoted in a horizontal segment 34 in the main frame, links 35 and 36 connecting the bell-crank lever with the key lever and type bar, respectively, and a return spring 31 connected with the key lever and the anchor bar 17 which is supported on brackets 28 forward of the plane of wall 4 antbelow the level. of the lower edge of said Well. The ribbon (not shown) is carried by spools 37 mounted inupright position on brackets 38 held to the bed 11 and extending forward over wall 4 at opposite sides of the machine.

The parts above described are all constructed and arranger as in the well known Corona. four 130- ble typewriting machine. The shift to on frame preferably also is made to sei is as a counterbalz-incing frame for the shift frame and parts shifting there with connecting the lower ends of counterbalancing springs 39 with lugs 40 on the rock arms 20, the upper ends of the springs being connected with lugs 41 on brackets The ribbon guide lies back of a type bar guide 43, which is secured by screws at its lower end to the front faee of wall 4 above the central part of the segment and extends upwardly and rearwardly in front of the, bed and carriage in an inclined plane parallel with the plane in which the platen shifts; Ribbon guide 42 is slidably guided on the type bar guide to shift up and down in a plane parallel with the plane of shift of the platen by three guide lingers 44 on said ribbon guide overlapping the front face of the type guide. The type and ribbon guides shown are of the same form as those employed in the Coronafour machine. The novel ribbon guide vibrating and silencing means will now be described.

A sheet metal ribbon-guide reciprocating and snpporting lever 45 extends transversely of the machine in front of the base plate of the platen carriage from a point adjacentthe left hand end of the carriage bed 11 to a point back of the middle portion of the ribbon guide 42 and is provided at its inner end with a horizontal slot 46 through which ontends the shank of a headed stud 4? fixed to the guide and extending rearward with its head behind the slotted or forked end of the lever. The main flat body portion of a sheet metal bracket 48 is secured at its rear against the bottom face of carriage bed 11 by screws 49 andextends forward and upward over frame wall 4 between the type guide and the left hand side of the machine. This bracket is formed with a pair of foreand-aft spaced upwardly and rearwardly extending guide lingers 50 at its left hand end between which the left hand end of lever 45 is guided to vibrate in an oblique plane parallel with the plane of wall 4, lever being pivotally held approximately midway its ends by ashouldered pivot screw 51 against the broad fiat front face of an arm 52 bent upward from the forward edge of 48 at the right hand e'nd or" the The arm 52 lies fiatwise' in a p ane with the plane of wall 4 and screw 51 is threaded in said bracket arm perpendicular to the plane of the bracket arm.

The inner arm of lever 45 is formed with a projection 53 on its lower edge normally resting on a stop finger 54 projecting inwardly from the right hand end of bracket arm 52 and bent forward llatwise under the lever to limit downward swingi of the inner end of the lever and adapt the lever to support slidable ribbon ide in a predete mined nor-' mal relation to the plate in wh eh a ribbon threaded through the guide will lie below the printing point indicated by arrow l 1). The stop finger 54 bendable up and down by a suitable tool to adjust the nor l position of the ribbon guide. The left haor outer arm of lever 45 is forn'ied between the guide-fingers and the pivot with an upwardly bowed arcuate slot 55 eritendin lengthwirrie of the lever, and with a transverse s 5 extending upward from thelower edge of the lever to the middle of slot 55.

A reciprocatory vibrator for lever ex tends diagonally downward and forward in front of bracket 48 and frame wall at thleft hand side of the system of pe bars fr a point approximately level with the forward edge of the carriage base plate to a point approximately level with the lower edge of wall 4:. This vibrator comprises an upper section 57 and a lower section 58 adj ustably but rigid ly connected at their adjacent ends by a pair of fastening screws 59 in such manner that the vibrator may be lengthened or shortened. The vibrator is formed of sheet metal and the section 57 lies fiatwise in a plane extending transversely of the machine, while section 58 lies flatwise in a plane extending tore a of the machine and formed with an. inwardly extending lug 62 lying tlatwise behind the lower end of section 57. The shanks of the clamping screws 59 extend rearward through slots 60 in section 57 (which extend longitudinally of said section) and are screwed in threaded apertures 61 in lug; 62 to firmly lock the two sections of the vibrator in desired endwise adjusted re ation with each other. T he vibrator 5758 is guided to vibrate endwise in an upwardly and rearwardly inclined path, and is supported to partake of case shift novements ot' the platen, as hereinafter described.

The upper section 57 of the vibrator pro vided with adjustable bichrome and stencil control means cooperating with slots 55 and 56 to operati.vely connect the vibrator with the left hand arm of lever 45 at either of two points located different distances from the fulcrum screw 51 of the lover, or to break the operating connection between the vibrator and lever;which means will now be described. A spring steel connector member 63 has a rearwardly ofi set pivot portion 63 at its lower end pivotally held against the front face of section 57 of the vibrator by a oi ot screw 64, threaded into an aperture 65 in saidsection about midway the ends of the section, and said connector is formed with a linger piece 63 at its upper end forward of and above lever 45 by means of which the connector may be flexed rearwardly and swung sidewise. Just below the tinge piece, the connector member is provided with a rearwardly and downwardly exteiulin, projection preterably comprising, as shown, a headed stub 66, the head of which is located behind lever 45, and theshank of which norn'ially extends through slot 55 in the lever and has a reduced -ldn'ward end portion extending; through member 63 and peeueil down to secure the s id in place. The shank o1? the stud preferably has a snug sliding lit in slot 55.

The upper end oi? section 51 is widen-ad transversely of the machine and is'iormed with an integral upwardly and forwardly cxtending yoke through which connector 63 extends. The rear edge of the transverse member of yoke 5'? is formed vith a central locking notch 67 adapted to receive connector 63 to lock the same against swinging movement with the shank of stud 66 opposite the upper end. of slot 56, this being the adjustment of the connector employed when it is desired to make stencils. The rear edge of said transverse member inclines outwardly and iorwardly at both sldes or notch 67 to form two cam fllCtlOll locking edges 68 and 69 of greater length than the width of the ad- Swinging movement 01" the connector toward the left from notch 6'7 is limited by an adjustable stop finger 7O formed on section 57 oi the vibrator, and swinging movement of the con nector toward the right from notch '67 is limited by a. similar stop linger 71 torn'icd on said section. These stop lingers extend upwardly from opposite sides of the vibrator section 57 below yoke 57 and are bendable transversely of the machine for purposes of adjustment, the upper end of each finger being bent forwardly to provide an abutn'ient engageable by the connector.

ll hen the connector is adjusted as shown in the drawings, the stud 66 is in the left hand end portion of slot- 55'and the connector is held against swinging by stop 70 and cam 68. This is the adjustment for the sh rt throw of lever 4l5 for using the upper (usually black) half of the bichrome ribbon (not shown). When the connector is flexed rear ward and then thrown over into engagement with stop 71, the stud 66 is in the right hand end portion of slot 55 and the connector will be held in place by stop 71 and cam .69. This is the adjustment for the long; throw of lever for using the lower (usually red) half of the bichrome ribbon. Slot curves in the arc of a circle of which pivot screw or the center. It will be observed that the connector with its stud is manually adjustable to establish an up-an'd-down push-andpul.l operating means for actuating the vibrator at the key-.

strokes is mounted on the main frame of the machine. Said actuating;' means comprises a steel, rock shaft 72, a rock arm or tappet 73 till) fixed on the shaft, a shouldered screw or ta'ppet head 74 held to said rock arm. 73, and a pair of rock arms 82 and 83 for oscillating said shaft. Rock shaft 72 .:;tends trans versely. of the machine directly under and closely adjacent the lower edge of the main frame partition wall 4: and has reduced end portions 72" journalled in cars bent up from the lower portions of a pair of sheet metal brackets 76. Bracketsfl'G have their upright body portions held flat against the front face of wall 4 at opposite ends of the segment 5 by screws 77, and the ears 7 5 lie in fore-andaft vertical. planes and curve downwardly and rearwardly to points immediately 58 to prevent accidental disconnection of n below the lower edge of wall l. Rock arm 7 3 is preferably formed of sheet metal (as shown) and brazed on shaft 72, said arm lying flatwise in a vertical plane and extending upwardly and forwardly from the rock shaft adjacent the left handend of the shaft slightly to the left of section 58 of the vibrator.

The vibrator is guided adj acent its lower and upper ends to reciprocate obliquely in a path substantially parallel with w ll l by means of the tappet screw 74: and a link 78, Link 78 extends transversely of the machine, being pivotally hold at its outer end to the upper part of vibrator section 57 (behind said section) by a pivot screw 79, and having its innor portion lying against and extending across the front face of the broad arm 52 of bracket 48, to which bracket arm the link is pivotally held by a pivot screw 80 passing rearward through the inner end of the link and screwed into the bracket arm adjacent the inner edge of the arm. he shouldered tappet and guide screw passes loosely through a longitudinal guide slot 81 in the lower part of vibrator section 58 and has its reduced threaded outer end. screwed through the forward end of rock arm 73 and head located adjacent the inner face of vibrator section vibrator from the screw.

In the preferred embodiment of the invention illustrated in the drawings, shaft 72 is rocked in a direction to depress or pull down the vibrator, upon tne down stroke of any character key, through the medium of rock arm 83. Arm 83 is preferably formed of sheet metal and brazed on shaft 72 a little to the right of mid-length of the shaft and do pends from the shaft. This arm is adapted to be rocked rearwardly during down strokes of the keys through a connection with an arcu ate type bar-actuated universal bar 8%. The universal bar vibrates in an arcuate rec 85 in the rear face of the type bar segmen' and normally abutsthe frontwall of said recess to determine the normal position of rock arm 78 as hereinafter described) in position to be engaged and moved rearward by 86 on the type bars 8 as the type wing toward the platen 1.3. The uni ersal bar m "no 7 mounted to vibrate back and forth in a path substantially perpendicular to the inclined plane of wall l of the main frame, lien-1o; supported on the forward ends of a pair of tw part side arms the front sections 88 of which extend rearwardly and downwardly through apertures 8? in wall 4 and. carry pivot studs 89 engaged in bearing apertures in the upper ends of upstanding rock arms 90 which are TlQjldly held to a short transversely extending rock shaft 91. Rock shaft 91 extends between the rearwardly and downwardly projecting arms 7 on the key lever fulcrum member 6 and has reduced end portions 91 journalled in said arms 7. The rear sections 88 and 88 of the left and right hand side arms, respectively, the universal bar are slotted longitudinally (as shown at 92) to receive the rock shaft 19 of the shift torsion and counterbalancing frame, said shaft fitting snugly in slots 92 to slidably support the side arms at their rear ends the slots extending perpendicular to wall 4. The studs 89 are so located as to move during vibrations of the universal bar, substantially equal distances foreand- J! 1 v 1. 4 art of a plane extending through the axis of rock shaft 91 parallel with wall l. throw of the universal bar under violent type bar strokes checked by a bumper 98 on side arm section 88 which is adapted to engage rock shaft 19 upon rearward over-travel of the universal bar.

lChe right-hand rear side arm section 88 is formed at its forward end with a rigid depending; arm 94 which extends down behind rock shaft 91 to a point slightly below the level of said shaft. The universal bar and its side arms are preferably formed of sheet metal, the two sections of each side arm being; rigidly but detachably connected by a pair of fastening screws 95, and the front secioiis of the side arms being; formed integrally with the arcuate universal bar.

A substantially horizontal link 96 extendfore-and-aft of the machine under rock shaft 91, is connected at its rear end with the lower end'of arm 94L and at its front end with the lower end of rock arm 88, so that when the universal bar is moved rearwardly and downwardly said rock arm 83 is rocked rearwardly to swing the rock arm 73 (carrying the screw 74) downward. The universal bar is returned and normally held against the front wall of the segment recess 85 by a coiled spring 97 connected at its rear end with the lower end of rock arm and extending forwardly from said arm to the transverse spring-anchor bar 17 to w rich the spring is connected at its forward end. The engagement of universal bar 84 with the front wall of recess 85 limits the return rocking movement of the shaft 72 and its rock arm 73. A transverse spreader bar 98 formed on side arm section 88 abuts the inner face of side arm section 88".

A tappet toe 99 lies alongside the outer ace of the lower section 58 of the vibrator no is pivotallv held at its upper end to the pper end of d vibrator section by a pivot c "ew 100 to sving in a vertical plane foreod-aft of the machine The lower end of extends down between tappet arm 73 nd vibrator section 58 and is formed with o upward facing abutments located differmph is adapted to be engaged. ' lhese abutments 101 and 102 in the preferred. embodlment of the invention comprise the bottom edges of Gvera at distances from the lower end of the toe. over which the shank of the tappet screw 74 the two sections or branches of an angular opening or slot 108 in the lowerpart of the toe of substantially invertedL-shape. The branches of slot 103 are substantially wider than the diameter of the screw shank, andthe upper edge of slot 103 and the upper end edge of slot 81 are both located above the highest point of travel of the tappet screw shank, while the lower abutment 102 is located higher than the lower end of slot 81 when positioned for engagement by the tappet screw shank. The abutments 101 and 10:2 are stepped one above the other a distance corresponding with the extent of case-shift movement of the platen, which of course is determined by the spacing between the upper and lower case types on the type bars.

The vibrator 57-58 and its connected tappet toe 99 are normally held elevated by a returning and supporting spring 10 1, which, in the preferred embodiment of the invention is connected at its lower end with the toe 99 at a point below and in rear of the pivot screw 100 so that this spring also assists the action of gravity in normally urging the toe rearwardly about its pivot to shift and hold the abutment 101 engaged under the shank of the tappet screw Yet (as shown in Figs. 1, 5, 7, 8 and 9) when the shift frame and platen are in lower case position. Spring 10a extends upward and rearward from toe 99 and is secured at its upper end to the bracket 48 attached to the shiftable carriage bed 11.

Toe 99 is automatically rocked forwardly about its pivot at the start of the upper case shifting movement of the shift frame by a fore-and-aft swinging sheet metal arm 105 depending from a horizontal pivot screw 106 threaded in an ear 107 on bracket 18. Arm 105 is formed with a short rearwardly and downwardly extending cam eege portion or shoulder 107 at its rear edge the upper part of which is engaged with the front edge of a lug 108 extendin upwardly and forwardly from the upper end of the left hand bearing bracket 76 for the rock shaft 72. At its lower end arm 105 formed with an inwardly extending finger 109 engaged behind the rear edge of tee 99. AS tho shift frame starts upward, upon actuation of either one of the shift Key levers 22, cam surface 107 rides up past lug 108 and forces pivoted cam arm 105 forward sufficiently to disengage abutment 101 from under screw 74% after a very slight rise of the shift frame (as shown in Fig. 10) so that abutment 102 will become engaged under said screw at the end of the upper case shifting movement of the shift frame. Provision is thus made for depression of the vibrator from the tappet arm during upper case typing to the same extent as in lower case typing.

The cam surface 107 is formed on the upper rear part of pendent finger 110 on arm 105 which rides on the forward edge of lug 108 throughout case shift movements of the shi t frame. Finger 110 is bendable foreand-aft. to vary the cam surface 107 to insure release of abutment 101 from under screw 74: in various adjustments of the parts, and particularly of the lower case stops, and lug 108 also may be bent up and down to assist in obtaining proper action of the pivoted cam arm. Finger 109 is bendable foree and-aft to insure proper engagement of abutment 101 under screw 74 when the shift frame is in lower case position. Depression of the vibrator by the tappet is limited by engagement of a stop finger 111 on vibrator sect-ion 57 which is arranged to strike the upper face of bracket 48 to prevent overthrow of the'vibrator and of lever 45 and the connected ribbon guide 12 on the down strokes of the keys. The finger 111 is bendable up and down to adjust the limit of down movement of the vibrator and the extent of upward throw of the ribbon guide when writing in black. Y

It will be obvious that rearward movement of the universal bar by any type bar as it approaches the platen will rock the shaft .72 and swing the arm 73 downward, and that, whether the shift frame is in upper case or lower case, the tappet screw on arm 73 will pull down the vibrator a fixed distance until it is arrested by stop 111 striking bracket 18. This fixed downward movement of the vibrator will rock the inner end of lever 4-5 upward to either of two predetermined levels relatively to the platen to lift the rib bon guide to a point where the upper half of the ribbon covers the printing point P or the lower half of the ribbon covers said printing point, according to the adjustment of connector arm 63 to position stud 66 in the left hand or right hand endof slot 55. Upon return of the type bar, spring 97 returns the universal har, rock shaft 72 and tappet arm 73 to normal position, and spring 1041 restores the vi irator to normal elevated position and returns lever 15 and the ribbon guide 12 to normal position. As there is apt to be slight lost-motion between lever 15 and stud 66, which, when the stud is adusted close to the pivot 51 of the lever for the long throw of the ribbon guide, may be sufficient to permit over-throw of the ribbon guide when writing in red, due to momentum acquired by the guide and lever, a pendent stopfinger 112 is formed on the lever 15', below its pivot, positioned to engage a pend ent finger 113 (formed onarm 52 of bracket as) simultaneously with the engagement of finger 111 on the vibrator with bracket 18 when the connector arm 63 is adjusted for the long throw of lever 45. Steps 112 and 113 are bendable transversely of the machine for purposes of adjustment and are arranged to engage only when the bichrome control l O U ing the key strokes so that the ribbon guide will remain inactive in its normal lower position to hold the ribbon away from the print-- ing point for convenience in writing stenoils. I It'wil'l be observed that the tappet screw 7 l does not engage either the upper or lower end of slot 81 in the vibrator at any time. this slot merely serving to guide the lower end of the vibrator during reciprocatory motions of the vibrator by the pull down tappet and the vibrator pull-up and supporting spring 104. The vibrator is pulled down by the tappet through the medium of the automatically set pivoted tappet toe 99 pivoted on the vibrator. It will also be observed that the tappet screw 74 has a pull-down connection only, with the tappet toe 99, said toe being drawn up by the spring 104lwhich maintains either the abutment 101 or the abutment 102 engaged under the shank of tappet screw 74, depending upon the case position of the shift frame.

The angle and throw of arm 73 is such that the screw 74 moves slightly forward during downward swinging movements of said arm, and this movement of the screw assists the pull of spring 10 l'in maintaining abutment 101 engaged under the screw during lower case typing. Disengagement of abutment 101 from screw 74 when shifting to upper case is facilitated by the gradual merging of the abutment with the front wall of the pendent branch of slot 103, as shown. In Fig. 10 of the drawings the abutment 101 is shown shifted forward from under screw 7% by cam arm 105 after a minute rise of the shift frame, while in Fig. 11 the abutment 102 is shown engaged under said screw by the full upper case movement of the shift frame.

The ribbon vibrating means is so constructed as to be positive and accurate in operation and is compactly arranged in a manner particularly adapted for use in a low or flat machine of the three-quarter strike class.

The universal bar 84 is provided with a rigid tappet or shoe 114 on its left hand side bar section 88 (as shown in Fig. 7) for actuating an escapement mechanism, not shown, for the platen carriage.

l/Vhat we claim is:

1. In a typewriting machine, the combination of a main frame, a. platen, key operated .L I a; type bars, an up and do esciha; "g tappet mounted on the main frame independently of the universal bar, a connection between said tappet ad universal bar for swinging the tappet downward on the printing strokes of the type bars, spring supported means movable downwardly by the tappet against the tension of the supporting spring on the printing strokes of the type bars, a member carried by said spring supported means to move up and down therewith and manually adjustable laterally relatively thereto, a two-arm lever fulcrumed for up and down swinging of its arms, means forming a pin and slot connec tion between said member and one arm of said lever for establishing push and pull connections between said member and lever at different distances from the lever fulcrum. by lateral adjustments of the member, and a ribbon guide connected with the other arm of the lever.

2. In a typewriting machine, a main frame, a platen, a shift frame for the platen, a ribbon guide vibratable up and down to cause a ribbon to cover and uncover the printing point on the platen, a lever fulcrumed intermediate its ends on the shift frame to rock up and down, means connecting one arm of the lever with the guide, a vibrator connected with the other arm of said lever, a. vibrator elevating and supporting spring connecting the vibrator with the shift frame, key-operated means for shifting the shift frame upwardly from a lower case position to an upper case position, a tappet mounted on the main frame to vibrate up and down, a spring normally holding the tappet elevated, means controlled by case-changing movements ofthe shift frame for establishing a different pull-down connection between the vibrator and said tappet for each case position of the shift frame to equalize the action of the tappet on the vibrator, and means operable from the character keys of the machine for imparting downward movement to the tappet when a character key is depressed.

3. In a typwriting machine, a platen, a rib bon guide vibratable up and down to cause a ribbon to cover and uncover the printing point, a lever fulcrumed intermediate its ends to rock up and down, means connecting one arm of the lever with the guide, a longitudinal slot in the other arm of the lever, an up and down vibratable vibrator, a vibrator elevating and supporting spring, means mounted on said vibrator and engaged in said slot and manually adjustable laterally relatively to the vibrator to vary the point of engagement thereof with the lever longitudinally of the slot, a tappet mounted to vibrate up and down associated with the vibrator to impart downward movement to the vibrator upon downward movement of the tappet, means whereby the vibrator is guided to move up and down in a predetermined patina spring normally holding the tappet lifted, and character-key-operated means for imparting downward movement to the tappet upon depression of a character key.

4. In a typewriting machine, a main frame, a platen, a shift frame the platen, key-operated means for shifting the shift frame upwardly from a lower case position to an upper case position, a ribbon guide vibratable up and down to cause a ribbon to cover and uncover the printing point, a lever fulcrumed intermediate its ends on the shift frame to rock up and down, means connecting one arm of the lever with the the tappet when a character key is depressed,

and means controlled by case-changing movoments of the shift frame for establis 1mg '2. pull-down connection between the vibrator and tappetin each case position of the shift frame.

5. In a typewriting machine, a platen, a ribbon guide vibratable up and down to cause a ribbon to cover and uncover the printing point, a level fulcrumed intermediate its ends to rock up and down, means connecting the guide with one arm of the lever, an up and down vibratable vibrator connected with the other arm of the lever, a spring connected with the vibrator to elevate the vibrator and normally supporting the vibrator in elevated position, means whereby the vibrator is guided to move up and down in a predetermined path, a tappet mounted to vibrate up and down, a tappet-elevating spring normally holding the tappetelevated, said vibrator having a tappet toe thereon upon which saie tappet exerts a downward thrust upon downward movement of the tappet, and characterkey-operated means for imparting downward movements to said tappet when a character key is depressed.

tively thereto and having twostepped abutmerits thereon spaced apart in the direction of shifting movement of the shift frame a distance corresponding.with the eXtent of case-shift movement of the vibrator and'its tappet toe, a tappet mounteden the main frame to vibrate upland down and normally engaged over the higher abutment on the too, a tappet elevating spring normally'holding the tappet elevated, means mounted on the main frame operable from the character keys of the machineffor imparting downwardU movement to the tappet when a character key is depressed, and means controlled by uppercase shif 'vements of the shift frame for swinging said tappet toe relativelyto the vibrator to permit the lower abutment to rise into engagement with the tappet.

7. In a typewriting machine,a main frame, a platen, a shift frame for the platen,.key-. operated means for shifting the shift frame upwardly from a lower case position to an upper case position, a ribbon guide vibratable up and down cause a ribbon tocover and uncover the printing point, a lever fulcrumed intermediate its ends on'the shift frame to reel: up and down, means connecting the guide with one arm of the'lever, a longitudinal slot in the other arm of the lever, an up and down vibratable vibrator, a vibrator elevating and supportin spring connected with the shift frame, means engaged in said lever slot mounted on said vibrator for manual adjustment to varyitspoint of engagement with the lever longitudinally of the slot, a tappet toe pivotally held to the vibrator to move bodily therewith and swing relatively thereto and having two stepped abutmcnts spaced apart in the direction of shifting movement of the shift frame a distance corresponding with the extent of case shift movement of the vibratoran-d tee, a tap et mounted on the main frame to vibrate up and down and normally engaged over the higl ier toe abutment, in tappet elevating spring normally holding the tappet elevated, means mounted on the main frame and operable from the character keys of the machine for imparting downward inovei nent to the tappetwhen a character key is depressed, and means. controlled by' upper-casemovements of the shift frame for swin ing the toe relatively to the vibrator to permit the lower abutment to rise into engagement with the tappet.

8. In a typewriting machine, a platen, a ribbon guide vibratable up and down to cause a ribbon to cover and uncover the printing point, a platen shift frame, a lever fulcrumed intermediate its ends on the shift frame to rock up and down, means forming a push and pull connection between the ribbon guide and one arm of the lever, an upand down vibratable vibrator, means forming a push and pull connection between the vibrator and the other arm of said lever, an elevating and supportpr ng for the vin'ator shiftable be ';h the shift frame normally holding the vibrator elevated and the ribbon guide lowered, means for limiting upward move, ment of the vibrator by said spring,tappct mechanism operable from the character keys of the machine and settable by movement of the shift frame to depress the viorator equal a} in all casepositions of said frame upon the down stroke of a charzu'terkey.

"9. In a typewriting machine, the combination of a main frame, a platen, key operated type bars, a universal bar o'aerable by the ype bars, an up and down oscillating pet mounted on the main frame independently of the universal bar, a connection between said tappet and universal bar for swinging the tappet downward on the printing strokes of the type bars, sprin supported means movable downwardly by the tappet the tension of the supporting spring on the printing strokes of the type bars, a mem ber carried by said sprin supported means to move up and down therewith and manually adjustable laterally relatively thereto, a two-arm lever fulcrumed for up and down swinging of its arms, means forming a pin and slot connection between said member and one arm of said lever for establishing push and pull connections between said member and lever at different distances from the lever fulcrum by lateral adjustments of the member, a ribbon guide connected with the other arm of the lever, a guide for said spring sup- 7 ported n'ieans above said tappet, and a guide connection between said spring supported means and tappet, said means and its guide and guide connection all cooperating to cause the adjustable member to more up and down in a fixed path in each of its adjusted positions.

10. In a typevriting machine, a platen, a shift frame for the platen, shift key operated means for elevating the shift frame, a ribbon guide vibratable up and down to cause a ribbon to'coverand uncover the printing point,

a lever pivoted on the shift frame intermediate its ends to rock up and down, means forming a push and pull connection between said guide and one arm of said lever, an up and down vibratable vibrator, means forming a push and mil connection between the vibrator and the other arm of said lever, an elevating and supporting s 'iring for the vibrator connected with the shift frame and normally holding the vibratorelevated and the ribbon guide lowered, a tappet toe held to the vibrator to move up and down therewith and shift laterally relatively thereto,

for shifting sa'd toe laterally uponcase of the shift frame, and a on the main frame open i racrer Keys of the machine 'ssing tlle vibrator upon the down character key in either case poi he shift fran'ie, said too being shiftable laterally between positions from which it is dog iressible the same distance by the tap pe in all case positions of the shift frame.

an up and down vib 'atable vibrator, means forming a push and pull connection between the vibrator and the other arm of said lever, an elevating and supporting spring for the vibrator connected with the shift frame and normally holding the vibrator elevated, the ribbon guide lowered, and tappct mechanism mounted in part on the main frame and in part on the vibrator and operable from the character neys of tee machineto depress the vibrator on the down stroke of a character lroy, means for adjusting said tappet mechanism automatically upon operations of the, shift key of the machine to set the same for imparting equal depressing movements to the vibrator in both case positions of the shift frame.

12. In a type riting machine, a platen, a ribbon guide vibratable up a d down to cause a ribbon to cover and uncover the printing point, a lever fulcrumed intermediate its ends: to roc 1 up and down, means forming a push and pull connection between the ribbon guide and one arm of the lover, an up and down vibrsl'ablo vibrator, means forming a push and pull connection between the vibrator and the other arm of said 1 1 ing and supporting spring for the vibrator normally holding the vibrator elevated and the ribbon ido lowered andconnected with the vibrator independently of the lover, taopot means operable from the character keys of the machine for depressing the vibrator upon the down'stroke of a character key, a stop engageable by the guide-carrying arm of the lever for determining the normal position of the ribbon guide and the vibrator. and stopping means cooperating directly with the vibrator for limiting downward throw of the vibrator.

13, In a typcwriting machine, a platen, a ribbon guide vibratable up and down to cause a ribbon to cover and uncoverthe printing point, a lever fulcrumed intermediate its: ends torock up and down, means forming a-push and pull connection between the-ribbon guide and lever, au eievat one arm of the lever, an up and down vibratable vibrator, means forming a push and pull connection between the vibrator and the other arm of said lever, an elevating and supporting spring for the vibrator connected with the vibrator independently of said lever and normally holding the vibrator elevated and the ribbon guide lowered, tappet means vibratable at the character key strokes for depressing the vibrator on thedown strokes of the keys, and adjustable stopping means cooperating directly respectively with the leverand the vibrator to limitrespectively the up and down throws, of the vibrator. I 14. In a typewriting machine, a platen, a shift frame for the platen, shift key operated means for elevating the shift frame, a ribbon guide vibratable up and down to cause a ribbon to cover and uncover the printing point, a lever pivoted on the shift frame intermediate its ends to rock up and down, means forming a push and pullconnection between said guide and one, arm of said lever, an up and down vibratable vibrator", means forming'a and relatively adjustable stop means on the vibrator and shift frame for limiting down throw of the vibrator. V t

15. In a typewriting machine, the combination of a platen, key operated type bars, a ribbon guide, a two-arm lever having one arm connected with said guide'to vibrate the same, a support guided to vibrate up and down in a fixed path, a member carried by said support and adjustable thereon to move bodily therewith in a fixed path in each of its positions of adjustment, said member and the remaining arm of said lever being provided with means forming a push and pull connection therebetween in difierent adjusted positions of said member on its support, a spring connected with said support for normally elevating the support to lower the guide to printing point uncovering position a fixed stop for arresting upward movement of the support by said spring, a universalbar operable by the type bars, and tappet means operable by said universal bar for depressing the support against the tension of saidspring to elevate the ribbon guide. I t

16. In a typewriting machine, a platen, a ribbon guide vibratable up and down to cause a ribbon to cover and uncover the printing connecting the vibrator from the lever at will,

a spring for imparting upward movements to the vibrator, character-key-operated tappet mechanism for "imparting downward movementsto the vibrator, means for limiting downward movements of the vibrator includinga stop on the vibrator and a relatively stationary abutment engageable by said stop, a relatively stationary stop engageable by the lever for limiting downward movements of the guide and upward move ments of the vibrator, and a second relatively stationary stop engageable by the lever at a point close to the pivot of the lever when. the bichrome control mechanism is adj usted for the longer throw only ,of the lever to limit upward movements of the ribbon guide. i

. 17. In a typewriting machine, a 'main' frame, a platen case-shift mechanism for shifting the platen upwardly to change case, a ribbon guide vibratable up and down to cause a ribbon to cover and uncover the printing point, a lever shiftable bodily with the platen and pivot-ed intermediate its'ends to rock up and down,means forming a push and pull ribbon guide supporting and vibrating connection between the guide and one arm of the lever, an up and'down vibratable vibrator shift-able with the platen and vibratable relatively thereto, a spring connected with the vibrator independently.

of the lever for normally holding the vibrator elevated, manually adjustable bichrome and stencil control means for connecting the vibrator with the other arm of the lever at either of two points located different dis tances from the pivot of said lever and for operatively disconnecting the vibrator from the lever at will, and means for vibrating platen and pivoted intermediate its ends'to. rock up and down, means forming a push and pull ribbon guide supporting and vibrating connection between the'guldeand one arm of the lever an up and down'vibratable Y1 Qendentl' of the lever for movin the vibrator upward, tappet mechanism mounted in part on the vibrator and in part, on the main frame and automatically adjustable V by the case shift mechanism to impart full downward throws to the vibrator in either case position of the platen, and means includinga universal bar for actuating the tappet mechanism to impart downward throws to the vibrator upon the down strokes of the character keys of the machine.

19. In a typewriting machine, a main 7 frame, a platen,n1eans for shifting the platen to change case, a ribbon guide and means for vibrating thesame shiftable with the platen, a character key-operated vibratory tappet mounted on the main frame, a tappet toeradjustably held to said guide vibrating means and engageable by said tappet, and means controlled by said platen shifting means for adjusting said toe for uniform movement of the toe bythe tappet in the clifferent case positions of the platen.

20. In a typewriting machine, a main frame, a platen, means for case-shifting the platen, a ribbon guide and means for vibrating the same shift-able with the platen, a character key-operated vibratory tappet on the mainframe for moving said guide vibrating means in a direction to cause a ribbon to cover the print-ing point, aspring shifting with the platen for moving the guide vibrating means in a direction to cause retraction of a ribbon from the printing point, a tappet toe held to said guide vibrating means to vibrate therewith and adjustable relatively thereto, and means controlled by said platen shifting means for adjusting said toe relatively to said vibrating meansto effect equal vibratory movements of the toe by the tappet in all case positions of the platen.

' 21. In a typewriting machine, a main frame, a platen, means for case-shifting the platen, a ribbon guide and means for vibrating the same shifta-ble with the platen, a tappet toe pivoted 'on said guide vibrating means having stepped abutments thereon, a spring for moving said vibrating means in the one direction shiftable with the platen, a character-key-operated tappet mounted on the main frame for engaging with one or the other of the abutments on the tappet toe to, move the guide vibrating means in the opposite direction, and means controlled by said platen shifting means for swinging the toe about its pivot to present different ones of said toe abutments for action thereon by the tappet in different case positions of the platen.

22. In a typewriting machine, a main frame, a platen, a shift frame for shifting the platen, key-operated means for shifting the shift frame, a vibrator, a ribbon guide connected with the vibrator, a character-keyoperated tappet mounted on the main frame, a tappet toe pivotally held to said vibrator to swing transversely of the path of vibration of said vibrator and having stepped abutments thereon located different distances from its pivot, a spring connected with said toe and shift frame for moving the vibrator in one direction, and normally urging the toe about its pivot to position one of said abutments to the action of said tappet, and means operable automatically upon upper case movement of the shift frame for swinging said toe about its pivot against the action of said spring for effecting presenta tion of the other abutment to the action of said tappet while the shift frame isin upper case position. I

23. In a typewriting machine, a main frame, a platen, a shifteframe for shifting the platen, key-operated means for shifting the shift frame, a vibrator, a ribbonguide connected with the vibrator, a characterkey-operated tappet mounted on the main of said tappet, and cam means put into action by upper-case shifting movement of the shift frame for swinging said toe about its pivot to displace the normally active abutment from the field of action of the tappet and moving the otherabutment into the field of action of the tappet.

24. In a typewriting machine, a main frame, a platen, a shift frame for shifting the platen, key-operated means for shifting the shift frame, a vibrator, a ribbon guide connected with the vibrator, a characteu key-operated tappet mounted on the main frame, a tappet toe pivotally held to said vibrator to swing' transversely of the path of vibration of said vibrator and having stepped abutments thereon located different distances from its pivot, a spring connected with said toe and shift frame for moving the vibrator in one direction, andnormally urging the toe about its pivot to position one of said abutments to the action of said tappeta swinging cam mounted on the shift frame and interposed between said toe and a sta- 25. In a typewriting machine, the combination of a main frame, a shift frame, a

, 1U platen shift-able with the shift frame, a rib bon guide and a two-arm Operating lever therefor shiftable with the shift frame, a normally spring elevated vibratory support shiftable with the shift frame and vibratl5 able up and down in a fixed path relatively thereto, key-operated type bars'on the main frame, a universal bar on the main frame, tappet means connecting said universal bar and support for depressing the support the as same distance in the different case positions of the shift frame, and means adjustably mounted on said support to move bodily therewith in a fixed path in two different adjusted positions thereof relatively to the support and engageable with the guide operating lever at difierent distances from the leverfulcrumin said two adjusted positions to vibrate the lever differentextents, said guide being connected with one arm ofthe lever and said. adjustable means being en-v gageable with the other arm of the lever.

, 26. In a typewriting machine, a lever piv oted intermediateits ends, a reciprocatory vibrator for said lever, a spring for moving as said vibrator endwise in one direction, a keyoperated tappet for moving the vibrator endwise in the opposite direction and guiding the vibrator adjacent one end, a link connected with the vibrator adjacent the other end of the vibratorfor guiding the vibrator, and manually adjustable bichromeandstencil control means mounted. on the vibrator for connecting the vibrator with one arm of the lever at either of two points located different 4 'distances from the pivot of the leverandfor operatively disconnecting the vibrator from the lever at will, and a vibratory ribbon guide connected with the other arm of said lever.

27. In a typewriting machine, a main frame, a platen, a shift-frame for the platen. shift key-operated means for shifting the shift frame, a lever pivoted intermediate its ends on the shift frame, a reciprocatory vibrator for the lever, a link extending transversely of the path of vibration of the vibra tor and connecting the vibrator with the shift frame, a character-key-operated tappet on the main frame, said vibrator having a longitudinal guide slot engaged with said tappet,'a toe pivoted on said vibrator to swing transversely of the path of vibration of the vibrator and having two abutments thereon spaced apart longitudinally of the vibrator, a coiled spring connected with the toe and shift frame to move the vibrator in one direction andfnormally malntam one of sald abutments in the field of action of the tappet formovement of thev vibrator in the opposite direction by "the.

tappet, and means controlled by upper-case shifting movements of the shift frame for swinging the toe in opposition to said spring for rendering the tappeteffective on the other toe abutment.

28. In a typewriting machine, a main frame, a platen, ashift frame for the platen, means for shiftingthe shift frame, character keys, type bars on the main frame operable by the character keys, a universal bar mounted on the main frame to vibrate fore-and-aft e and operable by the type bars, a transverse shaft j ournalled on the main frame, a de-.. pending rock arm held'to said shaft, a fore and aft link connecting said universal bar with said rock arm, a tappet mounted on the rock'shaft, an endwisereciprocable vibrator having a pivoted toe provided with stepped abutments engageable by said tappet for end wise movement of the vibrator in one direct1on in different case positions of the shift frame, a spring connected with the shift. frame and vibrator for moving the vibrator in the opposite direction, means controlled by the case position of the shift frame for swinging said toe for determiningwhich of said abutments shall be acted upon by the tappet, a lever pivoted on the shift frame interme-' diate its ends, means connecting the vibrator with one arm of said lever, and a vibratory ribbon guide connected with the other arm of said lever. i I

29. In a typewriting machine, a main frame, a platen, a shift frame for the platen,

means for shifting theshift frame, character 7 keys, type bars on the main frame operable by the character keys, a universal bar mounted on the main frame to vibrate fore-and-aft and operable by the type bars, a transverse rockshaft journalled on the main frame, a depending rock arm held to said shaft, a foreand-aft link'connecting said universal bar with said rock arm, a tappet mounted on the rock shaft, an endwise reciprocable vibrator having a pivoted toe provided with stepped abutments engageable by said tappet forend-j wise movement of the vibrator in one direc-' tion in different case positions of the shift,

abutments shall be acted upon by the tappet, a lever fulcrumed on the shift frame and connected with said vibrator, and a ribbon guide connected with said lever.

30. In a typewriting machine, a main frame, a platen, a shift frame for-the platen, means for shifting the shift frame, charam ter-keys, type bars on the main frame operable by the character keys, a universal bar mounted on the mainframe to vibrate foreshaft, a fore and aft link connecting said universal bar with said rock arm, a tappet mounted on the rock shaft, an endwise reciprocable vibrator having a pivoted toe provided with stepped abutments engageable by said tappet for en dwise movement of the vibrator in one direction in different case positions of the shift frame, a spring connected with the shift frame and vibrator for moving the vibrator in the opposite direction, means controlled by the case position of the shift framefor swinging said toe for determining which of said abutment-s shall be acted upon by the tappet, a lever fulcrumed on the shift frame, a ribbon guide connected with said lever, and means for connecting said vibrator with said lever at different distances from the lever fulcrum.

31. In a typewriting machine, a main frame, a platen, a shift frame for the platen, means for shifting the shift frame, character keys, type bars on the main frame'operable by thecharacter keys, a universal bar mounted on the main frame to vibrate foreand-aft and operable by the type bars, a transverse rock shaft journalled on the main frame, a

depending rock arm held to said shaft, a

for swinging said toe for determining which of said abutments shall be actedupon by the I tappet, a lever fulcrumed on the shift frame intermediate its ends, a ribbon guide connected with one arm of said lever, and manually' adjustable means for connecting the vibrator With the other arm of the lever at different distances from the fulcrum of the lever and for disconnecting the vibrator from the lever at will.

32; In a typewriting machine, a main frame, a platen, a shift frame for the platen, means for shifting the shift frame, character keys, type bars on the main frame operable by the character keys, a universal bar mount ed on the main frame to Vibrate fore-and-aft and operable by the type bars, a transverse rock shaft journalled on the main frame, a depending rock arm held to said shaft, a foreand-aft link connecting said universal brator in the opposite direction, means con,

trolled by the case position of the shift frame for swinging said toe for determining which of said abutments shall be acted upon by the tappet, a lever pivoted on the shift frame intermediate its ends, means connecting the vibrator With one arm of said lever, a Vibratory ribbon guide connected with the other arm of said lever, and a type guide held to the main frame to which said ribbon guide is slidably held. I

33. In a typevvriting machine, a platen, a lever fulcrumed intermediate its ends to rock up and down, a ribbon guide connected with one arm of said lever, a spring-supported up and down reciprocable vibrator connected with the other arm of said lever, a fore-and- V aft movable universal bar, key-operated type bars for actuating said universal bar, a rock shaft extending transversely of the machine,

a rock arm depending from said shaft, a link extending forward from said universal bar to said rock arm, a tappet held to said rock shaft to vibrate up and down and effective on said vibrator to depress the vibrator, and a return spring for the universal bar and tappet.

34-. In a typewriting machine, a platen, a lever fulcrumed intermediate its ends to rock up and down, a ribbon guide connected with one arm of said lever, a spring-supported up and down reciprocable vibrator connected with the other arm of said lever, a fore-andaft movable universal bar, key-operated type bars for actuating said universal bar, a rock shaft extending transversely of the machine, a rock arm dependin from said shaft, a link extending forward rom said universal bar to said rock arm,a tappet held to said rock shaft to vibrate up and down and effective 7 on said vibrator to depress thevibrator, a second rock arm depending from said shaft, and a return spring for the universal bar connected with said secondrock arm.

35. In a'typevvriti'ng machine, aplaten, a

lever fulcrumed intermediate its ends to rock up and down-,a ribbon guide connected with one arm of said lever, a spring-supported up and down reciprocable vibrator connected with the other arm of said lever,'a fore-andaft movable universal bar, key-operated type shaft to vibrate up and down and "effective on said vibrator to depress the vibrator, means for limiting the throw of the vibrator in both directions, a return spring for the universal bar and rock shaft, and means for limiting return movement of the universal bar.

'36. In a typewriting machine, a platen, a

lever fulcrumed intermediate its ends to rock up and down, a ribbon guide connected with one arm of said lever, a spring-supported up and down reciprocable vibrator connected with the other arm'of said lever, a fore-andaft movable universal bar, key-operated type bars for actuating said universal bar, a rock shaft extending transversely of the machine, a rock arm dependin extending forward shaft to vibrate up and down and efiective 1011 said vibrator to depress the vibrator,

means for limitingthe throw of the vibrator one ,arm of said lever, a spring-supported up I and down reciprocable vibrator connect-ed with the other arm of said lever, a fore-andaft movable universal bar, key-operated type bars for actuating said universal bar, a rock shaft extending transversely of the machine, a rock arm depending from said shaft, a link extending forward from said universal bar to said rock arm, a tappet held to said rock shaft tovibrate up and down and effective on said vibrator to depress the vibrator,- means for limiting the throw of the vibrator in both directions, a return spring for the universal bar and rock shaft, means 'for limiting return movement of the universal bar,

and manually adjustable means for shifting the point of connection of the vibrator with i the lever toward and from the fulcrum of the lever and for breaking the connection" 3 between the vibrator and lever at wlll.

' 38. In a typewriting machine, a main frame, a shift frame, a platen shiftable by the shift frame, a ribbon guide and a tappet toe connected therewith to vibrate the same both mounted to shift bodily with. the shift frame a during case changing operations and adapted to vibrate relatively to the shift frame, means for shifting the shiftframe between case positions, a tappet on the main frame, means for vibrating said tappet operable from the character keys of the machine, a spring for urging the tappet toe in one direction to return and hold the ribbon guide in normal position,

means for determining the normal position or from said shaft, a link from said universal bar to said rock arm, a tappet held to said rock brating means in of the guide, and cam means coacting with the tappet toe during movement of the shift frame between case positions for automatically adjusting the toefrelatively to the shift frame to diflerent positions,'one' for each case tappet is adapted-to movethe toe equal distanc'es-in the same direction in opposition to said spring for moving'the ribbon guide to carry a ribbon over the printing point on the platen.

39. In a three-quarter strike typewriting ,machine, a main frame having front, back and side walls and a transverse partition wall; said partitionwall being in'clinedupward and rearward; an 'upwardly'and rearwardly inclined type bar segment held to the front face of said partition wall; key operated type bars pivoted in said segment; an upwardly and rearwardly inclined type guide held to the front face of saidpartition wall; a platen arranged aboveand in the rear of the segment for-receiving type impacts on its upper frontquarter; a ribbon guide "slidably held to the type guide to vibrate obliquely position of the shiftframe, from which said I to the horizontal plane of the machine; a

universal bar operable-by the type bars having side arms extending rearward through the partition wall; a rock'shaft lying under said partition wall; bearing brackets-for said rock shaft held to said partition wall; a depending rock arm on said shaft; a fore-andaft link connecting one side arm of the universal bar with said rock arm; an'upwardly and forwardly extending tappet held to said rock shaft and means 'connected'with said ribbon guide for vibrating the guide, "said means located forward of the 'plane ofsaid partition wall and extending around one side I of the system of type bars into operative relation with said tappet forfactuation by the tappet.

40. 1%; typew'riting machine as claimedin claim 39, in which case-shift me ans are pro vided whereby the platen, ribbon guide, and

said ribbon guide vibrating means are shift able obliquely substantially parallel with the plane of the partition wall, j and means are provided "whereby said tappet may "impart movements of uniform amplitude to said viplaten. i

4C1. Inatypewritingmachine,a main frame,

all case positions of the a carriage bed, a platen carriage mounted to I travel on the bed, a platen on the carriage, a

sheet metal bracket held to the bed" and ex tending forward therefrom and formed with an arm extending upward and lying flatwise in aplane extending transversely crummchine, a sheet metal lever extending 'trans- I versely of the machine in front of said armand pivotally held to the arm intermediate its ends to rock up and'down, said bracket having a pair of upstanding fore and-aft' spaced guide fingers receiving the outer a-rm of the lever therebetween, an up and down vibratable sheet metal vibrator forward of said bracket between said guide fingers and lever pivot, a

pivoted manually shiftable connector mount- 4 the vibrator, and a ribbon guideconnected 1 with-the inner arm of said lever.

42. A typewriting machine as claimedin claim 41, in which the bracket is formed with an up and down adjustable finger engageable by the inner arm of the lever to limit upward throw of the vibrator and downthrow of the guide, and the vibratoris formed with an adjustable finger engageable withthe bracket to limit down throw of the vibrator.

43. A typewriting machine as claimed in claim 41', in which the bracket is formed with an up and down adjustable finger engageable by the inner arm of the lever to limitupward throw ofthe vibrator and downward throw of the guide, and in which the vibrator is formed with an adjustable finger engageable with the bracket to limit downward throw of the vibrator and is also formed with a pair of adjustable fingers engageable by the connector for limiting the pivotal throw of the connector.

44. A typewriting machine, as claimed in claim 5, in which the vibrator comprises two sections adjustably connected for extension and contraction of the vibrator in up and down direction, and in which'the lever is con nected with the upper section of the vibrator and the tappet toe is carried by the lower section of the vibrator. I 45. In a typewriting machine, a shiftable carriage bed, a platen carriage on the bed, a

platen on the carriage, case-shift means for shifting the bed up and down, a'main frame having a transverse partition wall, a type bar segment held to the front face of said wall,

key-operated type bars pivoted in the segment, a transverse rock shaft, a pair of brackets held to the front face of said partition'wall in which said-shaft is journalled, one

. of said brackets having a. forwardly projecting lug,a bracket held to the carriagebed and extending forwardtherefrom over the partitionwall, an up and'down vibratable vibrator located forward of the wall, a pivoted tappet toe on said-vibrator having an inverted-L-shaped slot therein, a. forwardly extendingtappet arm fixed on said shaft, a transversely extending tappet screw held to said tappet arm and extending through said slot in brator for connecting the vibrator with the, outer arm of the lever at different distances from the lever pivot, a spring connecting the bracket on the bed with said toe to normally lift the vibrator andswing the toe rearward to engage the tappet screw in the forwardly extending branch of the toe slot, a pivoted cam member suspended from thebracket on the bed and interposed between the tappet toeand the lug on said rock shaft bearing bracket to rock-the toe forward at the beginning of the upper case movement of the carriage bed, and a universal bar operable by the type bars and connected to rock said shaft to impart downward movements to the tappet arm on down strokes of the character keys.

46. In a three-quarter strike typewriting A machine, a main frame, a platen shifting frame, means for shifting said platen shifting frame in an upwardly and rearwardly inclined plane, a bracket held to the shift frame having a fiat portion lying in a plane parallel with said inclined plane and widetransversely of the machine, a ribbon guide actuating leverextending transversely of the machine, pivotally sup-ported intermediate its ends on said bracket portion and lying against the front face of said bracket portion, avre ciprocable vibrator extending downward and forward from the outer arm of said lever, a spring normally urging the vibrator upward, means pivotally connecting the upper portion of said vibrator with the outer arm of said lever, a guide link extending transversely of end with the upper portion of said vibrator and at its inner end with said fiat bracket portion to rock up and 'down and lying against the front face of said bracket portion throughout the or portion of its length, a rock arm mounted on the main frame to rock up and down in a fore and aft plane, a combined tappet head and guide screw held to said arm, said vibrator having a longitudinalv 1y slotted lower portion lying in a fore andaft plane and through the slot in which said screw extends, tappet toe held to the vibrator to shift fore and aft relatively thereto and vibrate up and down therewith and having two upwardly facing abut-ments thereon stepped to correspond withthe distance bethemachineipivotally connected at its outer v but tween case positions of the platen, and means is in its other case position, and character key for automatically shiftingthe tappet toe relaoperated means for rocking said rock arm.

tively to the Vibrator to present one of said In testimony whereof We hereunto aifix our 10 abutments under the combined tappet head signatures.

and guide screw When the shift frame is in one HENRY ALLEN AVERY.

OTTO PETERMANN.

case position and to present the other abutment under said head When the shift/frame EDWIN HARMON.

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