US1604640A - Typewriting machine - Google Patents

Description

Oct. 26,1926. 1,604,640,

G. G. GOING TYPEWRITING MACHINE "Filed June 24, 1925 4 Sheets-Sheet 3 `INVENTR f. wnL

' "ATTORNEY G. G. GOING TYPEWRITING MACHINE Y Filed June 24, 1925 4 sheets-snaai 4 GEOtItGE GOULD GOING, 0F MIDDLETOWN,

CONNECTICUT, ASSINUR T EJYEMNGJIUN- noisnnnss' rirrnwnirnn.' conronarioiv, or new wenn, n. n., n 'contrataron OF NiEW YORK.

mirrnvviiirinc imonimin.

, application sied June ai, i925, serial no. aa'iaa l Y My invention relates to typewriting or like machines and more particularly to type actions therefor.

The main'object of the invention, gener-A t ally stated, is to provide an improved con-- struction and arrangement of parts whereby the elements .o f each type action are functionally and structurally coordinated tov facilitate printing `in an' improved manner.

' More specifically stated, one of the objects of the invention is to provide improved and highly eiiicient type actions for printing without producing the noise that- -ordinarily results from the operation of the 1 5v type actions.

A Suu .further @bieder the invention ist@ `provide any improved and highly efficient;

construction of the character specified in which the type actions are controlled from a standard keyboard with a single shift.

Another' object of my invention is to so construct and arrangetheparts that each type block at the last portion vof its printing guide and effect an imprint with substanti-y ally a straightline movement. A further object of thevinvention is ,to provide improved means for arresting the return movement of each type bar and the parts connected therewith in a substantially noiseless manner and without rebound.

To the above and other ends which will hereinafter appear, my invention consists in the features of construction, arrangements of parts and combinations' of devices set forth in the following descriptionand particular# lly pointed out in the appended/claims.

ln the accompanying` drawings, wherein li/ke reference characters designate corre- .40 sponding partsin the different views,

^ *Figure 1 `is a fragmentary fore-and-aft central' vertical sectional view, with parts` omitted,` of 'a Remington-Noiseless No'. 6 typewriting machineembodying my invention; i I

Figure 2 is a side 'view ofthe type action shown in Fig. 1 as it is seenA from the oppositeside', and with the type bar projected movement. will squarely enter a center type 1 to printing position under an actuation of one ofthe two printing'- keys which con trol it; Figure 3 is an enlarged fragmentary detail side View of a portionofone of the type actions with the parts disposedin nor-r mal position;

Figure 4 is a top plan view ofthe same;

. igure 5v is an enlarged fragmentary detail rear edge View of a-portion of oneof the typel actions;

Figure 6 is a fragmentarydetail rear view .with parts in section showing a guide comb and the companion sublevers and driving lever of one of the type actions;

`.Figure 7`is an enlarged detail fragmentary front view of the center type guide with the type block shown' in section entering the guide; and

Figure 8 is a diagrammatic viewfshowing a portion ofone of the type actions.

lhave shown my invention embodied in the present instance in a Remington-Noiseless No: 6 machine,l but have only shown so much of said machine asis necessary to"- arrive at an understanding of the `invention in its embodiment therein. It should be understood, however, that the invention is not restricted to embodiment in such machin-e, but may be employed in typewriting orlike machines generally, wherever found available.

The present invention has some of the same general objects inview as the structitl operated by either one of two keys. lEach pair of keys actuate a single front-stroke type bar in a substantially noiseless manner to normally selectively print from one or another lower case type on the type bar, depending on which of two keys is actuated, or to selectively printV from one or another upper case type on the same type bar after a relative case shift has been ellected be tween the platen and type bars.

ln the present construction l have modified the means for controlling the paths of movement of eachv type bar so that each bar moves at the last portion of its printing stroke in substantially a straight line into the centerguide, and to the printing point,

as distinguishedfrom a type .moving in an up or down curved path throughout its travel tothe printing point, as disclosed in my hereinbefore mentioned application, Sr. No. 3,365. This change provides for more accurate guiding ot the type block and the provision of better alignment of the imprints.

In the present construction l also have provided improved and highly ciiicient means for substantially. noiselessly arresting each type b ar and the connected vparts in their return to normal position, and for preventing rebound irom such normal position.

ln the present embodiment of my invention the frame of the machine may be said to include a base 1 and so-called frame member 2 on which various working parts of the machine, including the type actions, are sup ported. lt will be understood that the type bars are arranged in a substantially hori- -zontally disposed arc in front of and around the printing point as a center, so that each type bar moves but a short distance in a radial plane to the common printing center, as inthe constructions disclosed in my said eo-Apending applications. rllhe controlling means for each type bar, with the possible exception in some instances of the key levers therefor, move in the same plane as the plane of movement of the associated type bar, or as close to and parallel with such plane as the assembled parts will permit.

With the foregoing general statement lwill proceed to describe a single type action, it being understood that allactions are alike, orsubstantially so, except that they are mounted indifferent planes that vradiate from the. printing center. rlhe description of one Vtype action applies to the others.

Each type action 4comprises a flat substantially horizontally disposed type bar or type carrying member 3 provided with a plurality ot type blocks 4 and 5 fixed thereto. rlhe type block 4 has a lower case type 6 and an upper case type 6a, whereas the type block 5 has a' lower case type 7 for printing a diil'erent character and a companion upper case type 7a, the printing neoaeeo faces of the types on the two blocks being arranged in converging planes. Each type bar is guided against sidewise displacement in its printing movement by three fixed arcshaped guide combs, c, a1, a2, having radial slots in which the type bars move. Each type bar is supported by a pair of links 8 and 9 pivoted respectively at 10. and 11 to the type bar at diderent points in the length thereof; the link 8 being pivoted to the type bar nearest the rear or type-carryingend thereof. The link 8 extends as one continuous member from the pivot 10 down to the lower end of the link -(see Fig. 5) where it is provided with a laterally projecting pivot pin 12. A spring retaining member 8a is riveted near one end to the link 8 and at the opposite end is spaced apart from the link and is adapted to bear on the tree end et' the pivotpin 12, and thus detachably connect the link 8 tothe member on which the link is supported and pivoted.` rlhe lower end of the link 9 is mounted to turn on a pivot pin 13, and the links 8 and 9 are thus mounted to swing respectively on the centers of the pivots 12 and 13 in the movement of the type bar from normal to printing position. ln the present construction the pivot .pin 13 always remains iiXed during. the travel of the type bar to printing posi-l tion, but the pivot pin 12 is arranged to be displaced Jfrom normal posi'fcvj :elw-vnd" Fig. 2,*dnring the travel of the compa-.

type bar under the actuation of one of its two printing keys. rlhe pivot pin 12 is mounted on a controlling member lll in. a,

bcaringbpening in which is received the pivot 12. 1n the present instance this mem- 1 ber 14 is in the nature of alever pivoted ati,y

15 on a headed pivot pin secured to a type action bracket -or hanger 16 on which all associated parts oit the type acti-on except the key levers are mounted and by which they are supported, it being understood that y a separate hanger is provided for each type- 'lhe four-point' supporting means j action. for each type bar involving thepivots 10, 11, 12 and 13 l term a quaternate or quaternal linkage. ',lilielever 14- in the present instance is angular in shape to avoid interference with other parts of the type action,

as willbeunder'stood from an inspection of Fig. 2. llhe free end of this lever is pivoted at 17 to the upper end of a curved link 18 pivoted at its lower end, as at 19, to one arm of a bell crank lever 20. rlhis last mentioned lever is pivoted at 21 on a stationary arm 22 that may be adjusted'to diderent set positions on the companion hanger 16,

as will hereinafter more clearly appear.`

The other arm ot the lever 20 is pivoted at 23 to a link 24 pivoted at its upper end, as at 25, to a leverarm 26 pivoted at 27 on the associated hanger 16. rlhelink 24 and 'lever arm 26 constitute two elements or 'reoaeao members of atoggle broken from its straight line position by one of the two printing l keys of the. type action and by which the position 'ot' the pivotal center of the link 8 is controlled. It will be seen that whenthe toggle is in the Fig. 1 substantially straightline holding position` line passes substantially -through the pivots 23, 25 and 27, the pivotal center 12 will be held fixed `at its highest elevation. However, when the toggle is broken to the Fig.

2 position the center 12 is lowered to a dii.-

ferent elevation: y 1 from a comparison of Figs. 1 and 2 and `from a consideration ofFig. 8 that in both these positions thel center 12 is approximately on the same vertical line, and is at'substantially equal distances respectively above and belowa horizontal line passing through the iulerum 15 of the-lever 14; y

The diagram represented in Fig. 8 is intended toshow the disposition of the links 8 and9 and their pivotal points .when the parts are-in printing position under the ac-l tuation of either of the two associated printing keys` Referring particularlyto this figure, it will be seen that due to the specific Construction, and to the relative arrangement of the parts shown, a straight line u drawn through the pivots 10 and 12, when the last mentioned pi-vot remains fixed and 'companion type bar is in the printing position, will when extended, intersect a straight line @..drawn through the pivots 11 and 13 of the link 9. This point of intersection w i will be on a line ai tangential to the platen f Apoint of intersection co the present instance of a\ whether the at the printing point, and at a distance in inches above the printing point.- Moreover, this point of intersection w between the lines in question will be the mately the same, whether vthe pivot 12 be in the Fig. `1or in the Fig. 2 position. This is indicated in Fig. -8 wherein the line y `is' shown passing through the pivots 10 and 12 (shown in dotted lines) when they have been moved down to their Fig. 2 position. -The in question ymay be said to represent the instantaneous center on which the type bar moves near and to the printing point, and which gives. a substantially rectilinear movement to the effective type near the printing .point at the last p0rtion oi. the printing movement'of the bar. The substantially rectilinear movement .in question isf-'one in which the effective-.type-I` type bar is actuated byone or the other of its two printing keys, moves substantially in a straight linewhich if projected would pass through the printing point and the axis oi the by the line e. 'Such movement enables the active type -block to enterthe center Vtype.

in which a straight.

'It also will be observed.

little over four` same, or approxi.

.the dotted line c.

platen.l as indicated path atan angle to such line asin the construction disclosedin my copending application Sr. No. 3,365 and provides for better guidaneeof the type blocks and a more perfeet alignment of the imprints, aswill hereinafter more clearly appear. It may be here pointed out, however, that this construction and arrangement of the linkage to secure the results stated is an Vimportant Vfactor ofA the present invention. `VVhile` theA diagram shown in' Fig. represents I correct construction and disposition ot' the points to give the proper substantially rectilinear movement in question tothe enlective' typeas it approaches the printing point underl the actuation of either' of its two printing keys, it .should be understood that in lpractice these points'may be slid'ably deviated from Iwithout suiiiciently interfering with such movement in question as to make it objectionable. For example, if the lines' u c y should not all .converge at the point w,- or exactly on the tangential line w, good results may be obtained nevertheless. But the closer the approximation to the points indicated the better will the mechanism respond to the requirements pointed out.

I have hereinbet'ore pointed out that each type bar is operated selectivelyv` by two printing keys. @ne key automatically brings one of the upper lower pair of printing position. arrange the printing-keys 28,29, 30 and 31 in four banks,- with the key 29 in the second bank and the key 31 in the fourth bank 'connected to one type action, as shown. The next type action willi-,have its keys 28 and 3() in the first and third banks respectivelyl con` nectedt to the associated type bar. In moving a type bar to printing position under the actuation of the key 29 the type 7 will follow a curved path indicated substantially by the dotted line ,ifthe parts have been properly adjusted. On the other hand,when ,the type bar is moved under the actuation ot the key 31 the type 6 will follow a curved .path 'of the general character indicated by These curves are oppos'itel-y disposed and converge in front otand in line with the printing point, and complete their print-ing movement `from thenceto the platen substantially with arectilinear movement substantially coincident with the lineI a theoretically pair and' theother lone of the types on the type bar to fthe` f' In practice I prefer--t`o"j4 paths of-nlovement ot' a type bar are eonl trolled include in part features which have been described, including the lever 14 by .which the pivotal center 12 of the supporting link 8 may be shifted up and down from the Fig. 1 to the. Fig. 2 position. I will now describe in detail how each type bar has .its path oit/movement controlled from its two. printing keys.I

, trolling toggle, as previously set forth.

' at 40 to the companion key The key 31 is carried by a key lever 32 fulcrumed at 33 in the base of the machine and provided with an individual returning spring 34. This spring is adjustably con# nected at one end to a depending arm 35 on said key lever, and is connecte-d at its other end with a bar 36 that extends beneath all of the key levers and is adjustably mounted by suit-able means in the base of the machine. The key lever 32 isdetachably connected to a link 37 by a pivot 38 carried by .sa-id lever and received in an opening1 in the lower end of said link. Asidebearing spring-plate or clip 39 is Apivoted lever and bears laterally at its free end against the link 37. This clip holds the link connected to the lever` whenthe clip is in the eective position shown, and' enables the link to be detached from the lever when the clip is turned vdown around its pivot 40. The upper end ofthe link is pivoted at 41 to' an actuating member, sublever or lever arm 42 pivoted at 27 on the right-hand side of the bracket 16. This 'lever extends rearwardly beyond* its pivot to' form a second lever arm 26 which constitutes, one member of the con- Tn order to limit the movement of a toggle member 26, and the parts connected therewith, in both directions, T -provide an opening 43 in said member 26 to receive a stop pin 44 fixed to and projecting laterally from one side of the bracket 16.V This stop pin co-acting with one side wall of the opening 4 3, as shown` in Fig. 1, will limit the return movement of the member 26 and the parts connected therewith. This prevents the toggle 24," 26 in its return movement from breaking beyond the substantially straight-line normal position. The effect of maintaining the toggle in` the substantially straight-line position, is to hold the pivot 12 quiescent in the position shown in Fig. 1 when the` type bar is moved to the printing position by the actuation of the key 29. However, )the depression of thev key 31 results in moving the member 26 to the position shown in Fig. 2, where the opposite side wall of the opening 43 coacting with the stop pin 44 limits the movement of said member 26 and the parts connected therewith including the key 31. Thisdepression of the key 31 results in breaking the toggle from the substantially straight line holding position, shown in Fig. 1, to

l the operated position indicated in' Fig. 2,

'thereby lowering the type bar supporting link 8 to change y the pivotal center 12 of the path of movement of the type bar to the printingposition. The proper positioning of the pivot 12 in the Fig. 2 position, and the holding of it in such position by the toggle, is effected before the linal printing movement of the typebar takes place.

The @am printing key 29 Orth@ type' The lever arms 42 and 48 forward of the pivot 27 are parallel with each other and are of like construction, except that the arm 43 is provided `with a depending lever arm 49. This arm 51 which Lhas its rear end pivoted at 52 to a lever 53. The lever 53 is pivoted at 54 on the left-hand side of the bracket 16 and is bent or off-set laterally to form a yoke portion 55 above the bracket and is thence bent downwardly .to form a lever arm 56 onA the left-hand side of said bracket and overlying the lever arm 26, for purposes which will now appear. From an inspection of Fig. 2 it will be seen that the lever arm 4S) is provided with an opening 49, the walls of which coact with the stop pin 58 on the hanger 16 to limit the motion of the member 43-49 and vthe parts connected therewith in both' directions, like the corresponding stops of the member 26, 42.

llt will be understood that after each breaking of the toggle 24, 26 from the Fig. 1 to the Fig.y 2, position by an actuation of the key 31, the returning spring key isintended to return the toggle to normal straight-line position when the operator releases the key. However, it may happen at times that the toggle 24, 26 has not completelyreturned to such position before an actuation of the type bar by the other key 29 takes place. It is in order to rectify the position or insure the complete return of the toggle,"and thus t0 maintain an aecurate positioning of the pivotal center 12 in the Fig. 1 position, that T provide the lever 53, 56 operating in the manner described. Thus, it will be understood that a depression of the key 29 will, lthrough the intermediate train of connections 46, 48, 49, 51, and 53, lower the arm 56. 1f the toggle 24, 26 had not been fully returned after the preceding operation of the type bar by the key 31, then the part 26a ofthe member 26 will extend in the path of the arm 56, and as the latter is moved` down under the actuation of the key 29 the member 26- will be forced to the limit of itsgreturn movement, or until it coacts with the stop 44 in the F ig. 1 position. This occurs before the type bar reaches the printing position under the action of the key 29, and 1nsures the proper positioningl of the pivotal 34 for said' 49 is pivoted at 50 to a link lll) v the associated bracket 16. It willl be under- .stood that vin .the present instance Ijcon `\\able means,

\\same, as disclosed in my -hereinbeforemen- .energy ot' the accumulator.

andti tending arm cach type bar is moved to printing position.

In the present construction, like those olisclosedv in my-said copending applications, AI employ a single train yof driving means or cnnections for each type action including motion governing means having la momentum accumulator, said governing means being arranged to decelerate the final printing movement ot the type 4bar and'to translate into pressure against the platen the kinetic such means combined with the parts pre viously described that an -imprint may 4be effected in substantially a noiseless manner.

Operating motion is transmitted to `each type barfrom botli ol' its printing keys through the above-mentioned single train of driving means, to a'ctuate each type bar with a substantially uniform :touch from both `its `keys and to provide a` uniform, or substantially uniform, touch on the keys throughout the-system.

It has' been explained that the independe ently operating lever arms-42 and 48 for- Ward ot' their common pivot 27 are `of uniform character' and are mountedto move in parallel p lanes. A main driving'flever 57 is provided in each type action, this lever being pivoted at 57a to a depending arin on struct each` of these levers from vtwo correspondingly 'shaped members spaced apart aiid'lield together in spaced relation by suitsuch as shouldered rivets.' The cispeetion of each of the driving levers connections therefrom to the type bar may \be the same, orv substantially the t`ione\d application,l Si". N o. 3,365, except as `willpresently appear.v Each member of the lever` 57 is providedwth a forwardly exto bear upwardly against a. suitable padded` stop structure 60 fixed to the frame of the Whereas the corresponding rolling tread 64 bar is` individually guided vThe driving 59 that is adapted at the limit of the operating movement 'of the lever 57 (Fig. 2) on the over-lying lever 48 coacts with the other tread 62 on. ie driving lever. In order to insure contact between the. `co-, acting lever arms 6l, 42 and 48, ,I provide in the present construction a guide comb 65 secured at its upper end, as at66, to the associated .hanger 16.l The coacting lever arms work in guide slots 67 in the comb and. are thus maintained against relative lateral displacement. A depending link 68 is plv# oted on a rivet 69 ot' each driving lever 57 and is forked ati'ts lower end to coact with a segmental universal bar 70A which controls.

the escapement (not shown) for the carriage.` lever 574 also .hassan upright double arm 7l comprising ptwo correspond- `ing parts which straddle the bracket 16 and are united at their upper ends by a pivot pin 72.- This double arm 7l` is'connected to the associated typel bar 3 through mechanical devices which together with the main driv- -ing lever 57 constitute what has been hereinbefore rei-'erred to as a single train of drivii g connections including motion governing means having a momentum accumulator.

Such means are etl'ective vto transmit a for- Ward thrust to the type bar .in a uniform manner whetheractuated b y one or the other associated keys 29 and 3l. This train of connections includes a toggle comprising a doubletoggle link 7 3 made up of'tWo correspondingly shaped inembersgconnected tof gether but maintained spaced apart.- Ther toi-ward end portions of the'members of this double link-73 extend on opposite sides of the type `bai-,and are. connected thereto by the 'pivot ll which also connects the sup-4 porting link 9 to the type bar.1 A second double toggle member. 74'is made up 0'1" two correspondingly shaped' united parte which are maintained spaced apart. member 74 is pivotedat 75 to the forward end of the link 73 and extends on opposite turn ouv a. fixed pivot 76 carried by said hanger. A. single.'link or lever. arm 77 is connected at onerend bythe pivot 72 to the upright. doublearm 7l of the main driving lever. The arm 77 extends between the tWo members vvhich constitute lthe toggle inember 74 and is p'voted thereto at one end, as at 7 8, and moves the toggle 7 3, 74 to the sub-, stantially straight line position represented in Fig. 2,-.to apply printing pressure along thestraight line of the toggle. Rigidly attached to the arm 77 is a comparatively heavy Weighted member- 7 9 which servesas a momentum accumulator fdrthefactuating toggle 73, 74 when the latter is actuated by the main driving lever 57. After the de` pression ojf a printing key has been arrested, the momentum of the' accumulator 79 Will continue its movement to impart 'its energy to the toggle in order to complete the movement of the toggle members to 'the sub- I This double 'si-des of the hanger 16 and is supported-to l 60 tions as 'will presently appear.

stantially straight line position, thereby completing the printing stroke of the type bar. It will be seen therefore that this momentum accummulator 79 -is adapted to supply the 6 final energy necessary to st raighten the toggle 78, 74 when the type bar has sub- AAWstantially reached the printing position.

` 'A contractile spring 8O is connected at one end to the bracket 16 and at the other end of the rivet 69 onthe driving lever 57 and4` serves to return the lever 57 and the parts connected therewith to the .normal Fig. 1

position afterr each actiiation,tlie key lever being independently arrested in its return l5 movement by the stop 44 or 58, or if desired by a l,padded stop or rod el. I have embodied nove means in the present construction associated` with each typefaction, for substan-` tially'noiselessly arresting the return move- 20 nient of the type bar and the train'of driving connections therefor withoutirebound from the position of arrest, which l will now .de-

scribe. j

Referring more particularly to Figs. `8 and 4, it will be seen that a' pair of toggle members or links 81 and 82 are united at their adjacent ends by a headed pivot pin 83. This pivot is rivetedto the link 82 and works loosely in an inclined slot 84 in the link 81.

The width f this slot is such that the'pin maybe received `therein with a free sliding fit. The slot extends longitudinally upwardly and forwardly towards the forward end of the link 81 at slightly less than a right anigle to a straight line f (Fig. 8) that passes through the pivots 83,85 and 86 of the links when the, parts areI in the normal position, shown in Fig. 8. The reary end ofthe link 81 has a corresponding slot 87 except that it 0l is inclined'in the opposite direction from the slot 84. The 'slot 87 receives a headed pin 85 secured'to the associated bracket'or hanger 16 to which the pair of linksis anchored.

The headed pivot pin 86 is fixed to the weighted member 79 and the link 82 which.

is pivoted on this pin is maintained spaced apart from the weight by a spacing sleeve 88. The forward end of the link 82 extends beyond its pivot 86 and forms a forwardly tu extending stop projection or finger 89. 'I his stop vprojection is adapted,' under certain conditions, to coact' with a laterally projecting stop pin 90 on the member 7 9, but is normallv out of Contact therewith. Gravity and i lili the reaction of the parts tend to maintain the" parts so that each of the pivot pins 85 and 88 is normally seated in the'upperend of'its respective slots 84, 87, but under certain'con'- j ditions there may be a change inthese rela- In the operation of the stop links, the returnof the type bar and its train of driving l connections from a projected position, such as is shown in Fig. 2, will tend to bring the w links 81 and 82 from Ithe angular position shown in said figure to a `substantially straight-line position, shown in Fig. 8. lVhen the parts reach this last' mentioned position the links 8l and 82 will eflfcct a dead center pull`against the fixed pivot 85 and arrest further movement of the parts in substantially a noiseiess manner` and 'without rebound. By arresting the return movement ot'k the parts in the manner described the. straightened links absorb the spring of the moving-parts a-nil there is practically no bound or noise produced in effecting the ai-rest; lf for anyrcas0n lthe pivot pins 85A placement to break the links from their,

straight-line position and prevent the links .from locking the action against operation or from interfering with theA printing move-- ment of the parts.

The stops 89 and 90 prevent the links from accidentally jolting upwardly a' material distancg beyond the straight-line position in the return of the parts to normal. position. By having the stops normally out of Contact, and having them coact only occassionally when the connected ends of the links jolt up too far, l avoid the slight` noise that 'might result by reason of the stops contacting at every operation of the type bar.

Y In the present construction the alignment of ther type bars is obtained by an inclined adjustment of the supporting arm 22 by vwhich the. pivot 21 is carried. f The degree of the angle of this adjustment in the present instance differs from that in my application Sr. No. 3,365, due to other changes made in the. present type action, but the result obtained is-the same. In the present instance I employ this one'adjustment only of the member 22, andto effect it ll provide inclined slots 9,1 and 92 in the member 22, the inclination of the slots corresponding to the line of adjustment ofsaid member 22. Two guide pinsi 98 and 94, the latter` being headed, are received in the slot 91, whereas two guide pins 95 and 96 are received in the slot 92, said pins projecting from the left-A hand side of the associated bracket or hanger This' is due tothe inclined slots slotted ends of 16. An eccentric 97 is received in a slot 98 't in the member 22, said slot extending lengthwise at'substantially right angles-to the slotsv 91 and 92. 'The eccentric 97 is provided'with a hexagonal head by which it may be turned to adjust the member 22 in the direction of the length of the slots 91 and A92 therein. A

' screw 99 carried by the bracket and on which the link 9 is supported, may likewise be .ad-.

justably supported on .the companion bracket 16 by pivoting' the arm on the bracket at 101. The .forward end oil-this arm.100 ymayl have 'a longitudinally extending slot 102 therein, in which is seated an eccentric ro-` vided with a hexagonal head 103 and abinding 4screw having -a corresponding head 104 to hold the eccentric in its. adjusted lposi.a tion. The adjustment of the arm 100 lto different set positions-on the bracket 16 and around the pivot 101, results in raising or. lowering the pivot 13 ofthe link 9.- As

hereinbefore indicated ythe adjusting'me'ans herein disclosed lhaveV the saine objects lin view as the corresponding adjusting means disclosed in my copending application, Sr. No. 3,365.

It has-been explained that a separate supporting bracket or hanger .16 is provided foreach type action. These brackets are-radially disposed around the printing point, means Vbeing provided Awhereby each bracket, to-

gether with the parts ofithe type action carried thereby, may be individually introduced into and removed from the machine as a separate unit, and may receive an individual adjustment radially towards and from the' printing point. The construction that enables these results yto be obtained is'the same as disclosed in my copending application; Sr. No; 3,365, and is as follows: V The. forwardhorizontally disposed porl tion ,105 of each bracket 1 6 is received in a of the machine.

radially disposed slot in the top of the mem bei' 2 lof the machine frame? A depending projection 106 at .the .forwardyend` of each bracket -is received in a circumferential groove 107 in a screw 108 threadedinto a tapped opening in the member 2. The rear' depending end of each bracket .16 is slotted.A

at 109'to'receive the web 110 formed at the forward transversely slotted edge portionof a supporting member 111 secured. tothe base" The forwardl edge of the- 111 is segmental `in form, ,corre-1 sponding to the arrangement of the set of brackets 16 at the lower end thereof and has4 member interdental openings therein, each corre sponding in width to the thickness ef the associatedY bracketl. This construction provides a firm interlocking support between each bracket 16 and the member 11'1 which holds the bracket against movement in every direction except that of its radial adjustnient, effected by the companion screw' 108.

tained.

l tween the levers 48 and 57.

from the machine. The guide comb of each type action being individual thereto, and to the hanger or bracketby which the associatedtype action is supported, enables the above mentioned results to be readily atlThe present invention contemplates effecting a' relative case shift movement bev 95 tween the platen 114 and the type bars. Any suitablemeans may be employed for j this purpose, such for example as the pliaten shifting mechanism disclosed in my application, Sr. No. 14,100 filed March 9, 1925. In ^the present construction a shift key 115` (Fig.- 1) maybe assumed to actua-te suitable means (not shown) to shift 'the platen froml the lower case full-line to the upper case dotted line position shown inFig. 1.` In 95. Fig. 2 I haveshown a lower case type 6 on the type block 4 at the printingpoint under an actuation of the key'31. A-depression of the key 29 will bring a lower case type 7 on the type block 5 to -the printing point when 100 the platen isin the full-line Fig. 1 position. When the platen is shifted to' the 'upperl case dotted line position, then one ofthe upper case types 6a or 7 a will be selectively' moved to the printing point, depending on which of the two associated printing keys 29 or 31 'rolling tread on this lever eoacting with the companion-'rolling tread on the double arm A61.0f the driving lever 571gives a variable acceleration. to the motion. of the latter and also providesl a llost motion connection be- '115 This lost motion is brought aboutwhen 'the motion of the .lever 48, land thekey 29 by which it is actuated, a-re brought to rest at. the end of their stroke. "At this time, the driving lever 57 12,

and the parts connected therewith, including the typebar, are permitted to continue their operation independently' ofY the lever 48 and under their own momentum', to effect an imprint'withut the impetus of theactu- 125 atedf key 29 and the parts connected therewith at the final portion of the printing stroke. The motion thus transmitted to the` type bar 'is in the nature of a thrust exerted through the toggle members 73 and .74 .pushmi cated in ing the typebar to the printing point and by the final .expenditure of energy apply a powerful printing pressure. rlhe printing operation of the type bar by anl actuation of thev key 31 is accompanied by a displacement of the pivotal `center 12 of the supporting'link 8, as shown in Fig. 2'. This is accomplished by breaking the toggle 24, 26 from its substantially straight' line position, shown in Fig. 1., to the position represented in Fig. 2, due to the actuation of the lever arm 42 with which the toggle has direct mechanical connection. This results in turning the lever on its pivot 21 and lowering they support-ing lever from the Fig. 1 to the Fig. 2 position, as hereinbcfore explained, tlicreby changing-the position of the pivotal cen.- ter 12 of the supporting link 8 and causing the type bar to travel through a different curved path from that which it follows when actuated by the key 29, als indicated by a comparison of the dotted lines I), c in Fig. 1.

An actuation of the type bar b v the key 29 produces a like movement of the single train of connections from-the driving lever 57 to the type bar. In this instance, however, the toggle 24, 26 remains at rest in the substantially straight-line position, as indi- Fig. 1, thereby holding the lpivot 12 fixed against movement while the' link 8 turns thereon. Thisresults in the type bar moving in a curved path. indicated substantially by the ydotted line b in Fig. 1, to print from one or the other of the types or 7a,

depending on `whether the platen is in the lower or upper case position to receive the impress of the corresponding type. A return movement of each type bar and the4 driving connections therefor to normal posi@ tion, whether actuated by the associated key 29 Ior 31, is arrested by the links 81 and S2,

as hereinbefore explained.

In the present construction I am enabled to employ a center type guided that closely 'and effectively guides the type blocks both up and down, as well as sidewise, by reason of ythehereinbefore described substantially straight-line movement given to the 4type block at the last portion of the printing .1novement, and while it is entering the'type guide (Las will be clearly understood .from

aninspectionof Figs. land 7.' vAs shown in Fig'th'e fixed centerguide d has upper anl important and. 'lower guide walls 11G, 117 respectively and oppositely disposed side 'walls 118 and 1719 which cf'i'act with' ,each type block- 4 or 5 as'iit'squarely lenters the guide and accuitA tov the printing point` thus providing'foraccurate alignment. This is factor in a, machine of this character andfthe said striglit-line rnove-l ment. of the effective type block at the last part v'ofthe printing 4movement renders it feasible to thus accurately guide the type.

. Corresp 1t will be seen thatA in the present con-y struction the supporting and guiding links 8 and 9 merely act as suclf'at all times, the driving operation of the type bar being never effected through. said links, and that whether the type bar. be driven by the actuatiorrof one or the other of the keys 29 or 3-1'such driving ope-ration, as such, is effectedindependently of saiddinks, and always through the separat-e and distinct single driving train from and including' 'the lever 57, which eX-. erts at all operations a thrust on the type bar to move to .printing position always in a uniform manner.,

1t will be understood, moreover, that the pivotal support for the link 9 is at all times nuiintainedfixed during the printing operation, whether operating the type action from the key 29 or 31, and that the present contion, aud results to a high degree in a snnple,.uniform accurate, noiscless and reliable printing operation .thatmay be controlled by a standard keyboard.

Vhile I have described in considerable detail the constructional form of the 'vari- Vous members which go to makeup each type action, vI am aware that various changes may be made in the construction, and that certain parts. may be employed without others, without departing from. my inven 'tion as it isv defined in the accompanying claims. However, the form of construction shown and described/ has proven reliable and eificientin use.

YV-hat I claim asnew and desire to secure by Letters Patent, isz

. 1. ln a type action, the combination of a type bar, a pair of links'fr supporting the bar, a pair of printingkeys, and means controlled thereby/for actuating said type bar selectively to print from one or another'type thereon depending on which key is actuated, the construction andarrangement of the parts beingsuch that when the typebar is in printing position a. 'straight line passing through the pivotal point of support of one of said links and through its point ofpivotal connection with the type bar will intersect with a corresponding line drawnthrough the nding points of the other link, the` said point of interscctionbeing the same whetherthe type bar be actuated byone or bar. a pair of printing keys, and means con` trolled thereby/ for actuating vsaid type bar selectively to print froni'one or another type i thereon depending on 'which key is actuated.. the construction and arrangement of the parts being such that when the type bar is in printing position aA straight ,line passing through the pivotal point of support of one of said links and through its point of pivotal Langeac connection with the type bar will intersect with the corresponding points of the other link,

Ithe said pointof intersection being approx-A imately on a line tangent to the platen at 1mg-'means between said keys and type vbarfor moving the latter in a curved path in one direction to a oint in frontyoi:` but adjacent to the printing point by an actuation" of one of said keys andfor movingsaid barV 1n a curved path in the opposite direction tion of a platen, a front stroke type bar carto a point in fronto'but adjacent to the printing point by l'the lactuation of the other of said keys, the -eiiective type in both stances continuing its movement to the print-v ing point substantially i-n a straight-line,

`said controlling meansincluding a pivoted type bar supporting "member, the pivotal center `of'which is atone elevation or an- 'other substantially in the same. vertical line depending onjwhich ofthe two keys is actu',- ated.V

t "4. In a ty eiwri'tinghmachine, the combi-vV nation ofa kront stroke type barpivotally mounted onaiquaternal' linkage and carrying a plurality of typfesfmotion' governing means articulated to saidtype bar and .arranged to decelerate thenal printing movement of said bar', a pair'of 'printing keys, and controlling'conneetions therefrom to actuate selectively said. typey bar, one of said keys beingarranged to displace the axis of motion of one member of said linkage to a lower elevation-than it normally occupies but substantially in the same vertical line.

5.' In a typewriting machine, the combinarying'a plurality of types, -a3`type` guide', a plurality of printing keys, and means controlled thereby for selectively actuating-said type bar to printfrom one or another of said types depending on which of said keys is actuated and to move the type bar through different curved pathsV to aposition where the effective types reach a line' of substantial coincidence before the platen is reached,

. said line of coincidence if projected extendf ler ing'substantially through the printing point v,

and the axis ofthe platen and obtaining for a substantial portion of the final part of each path of advanceof -theactive type into' the type guide and Atowards thevplaten, said means including a type bar supporting link having its pivotal center displaceable to dit'-v erent elevations substantially in the .same vertical line.

6. Ina type action,`the combination of a ac'orresponding line drawn throughl the printing point printing position a' straightv construction-and arrangement of the -being such selectively to print from one or another type thereon depending n which key is actuated,-

said means including means for shifting the pivotal center of one only 'of said links, the construction and arrangement ctv-the being'vsuch that when the ,ty e ,bar 1s in l ine passing through the pivotal point ofsuppo'rto one 'of' said links-and through its pointof piv otal connection 'WithjtheV type bar will in- .tersect with a corresponding -line d'rawn through the corresponding ,pointsfof the other. link, the said pointer-intersection being'approximatelyon'a line tangent to the platen at the printing poi-nt.' t 1. f p

. -7. In a typewriting machineythe com-binavtion of a front stroke.typebarfcarrying a plurality 'of types, `mo,t 'ion.governing means articulated thereto and 'arrang`ed to decel-` crate the finalprinting movement 'of4 said type bar,- a plurality of printing keysffand arts f controllingconnections therefrom to actuate said type bar selectively through different paths, said connectionsincludinga type bar supporting link .havingits pivotal center at one elevation or another substantially in the same vertical line dependingon which of the Aprinting keys is actuated. t

ln a type action,V the combination of af type bar, a pair oit' links 'for supporting the bar, a pair of printing keys, and means controlled -therebyfor actuating said type bar selectively to printfrom one or another t-ype thereon depending on which key is actuated said means including meansl for shifting the pivotal center of one only of said. links, the

that when the type bar 1s in printingposition-a straightline passing through the pivotal' point of support of one of saidv links and through its point of pivotaliconne'ction with the'type bar will intersect With a corresponding line drawn through the 'corresponding points of the other link, the saidV point ofintersection being approXimately on aline tangent to the platen at the printing point and at substantially the same distance fijom`the'printing point whether the type bar be actuated by 'one or the* other of said keys.

' -9. In a typewriting machine, the combi nation of-a frofnt stroke type vbar pivotally mounted on a qu'aternal linkage and having two axes of motion, thetype bar carrying a plurality of types, motion governing means articulated to the type bar and arranged to decelerate the final printing` move-ment of said -bar,a pair of 'printing keys, and controlling means therefrom to actuate selecincluding means whereby one'only of said axes of motion is positioned at one elevation or another substantially in the same vertical tively said type bar', saidcontrolling means,

arts

les

line depending on which of the pair of ing a type bar supporting link having its pivotal center shiftable to different `eleva--= tions substantially in the sa-iiie vertical line. l1. In a type action. the combination ot' a type bar, a pair ot' links for supporting the bar, a pair of printing keys', and means con-- trolled thereby for' actuating said ltype bar selectively to print from one or another type,

thereon depending on )vhich key is actuated, said Ameans including' motion' governing means ,for d-ecelerating thelinal printing movement of the'` type bar and substantially noiselessly pressing the type against tilic platen. the construction and arrangement of the parts being such that when the .type bar is in printing position a. straight line passing through the pivotal point ot 'support of one of said links and through its point of pivotal connection with tlie, type ar Will intersect with'tlie corresponding line drawn i' through the corresponding points of the other link, the said point of intersection being approximately on a line tangent to the platen lat the printing point and at s ubstantially the same distance from the printing point whether the type bar be actuated by one or the other of said keys. 12. In a typevvriting machine, the combination of a front stroke type bar mounted ton bodily movement and having a plurality of types fixed thereon; motion governing means connected with said type bar to decelerate the final printing movement of the type bar and for causing it to make an 1mprint in a substantially noiseless manner; a plurality of printing keys: and means-controlled thereby for controlling the paths of movement of said type bar to print selectively from one or another type thereon depending on which of said printing keys is actuated, said last mentioned `means including a pair of type bar ysupporting links, and means controlled by one only of said printing keys for shifting the pivotal center of one only of said links trom a point at one elevation to a point at a lower elevation but substantially on the same vertical line whereby the effective type may travel at the last portion of the printing movement in substantially a rectilinear path irrespective of which of the printing keys is actuated. i

13. In a type action for typewriting machines, the combination of a front strokel of types, a

type bar having a plurality oftypes thereon; tivo` independently operable actuating keys therefor; controlling means for controlling the path of movement of said type bar to'print from onel or another type thereon depending on which of' said keys is actuated, said controlling means including a type bar supporting link,-a leve-r on which said link is pivoted, means controlled byv only one of said keys for shifting said lever so as to cause thepointof pivotal connection of the y link therewith to move' from one point to another at diiierentelevations but substantially'on thefsame vertical line-said last mentioned means including a pair of toggle members normally maintained in a substantially .straight-line holding position, and means .controlledby one only Vof said keys for breaking the toggle members `from r such straight-line position, thereby actuating said lever; and additional means by which the type bar may be driven by the actuation i ot each of said keys.

14. In a type action, the combination of a type bar, apair of links for supporting the` bar, a pair of printing keys, and means-controlled therebyl for actuating said type bar selectively to print from one or another type thereon, depending on which key is actuated,.said means including motion governing means for decelerating the final printing movement ofthe type bar and substantially noiselessly pressing the type against the platen, said firstment-ioned means also including means for shifting the pivotal center of one only of said links, the construction and arrangement of the parts being such that when the type bar isin printing position a straight line passing through the pivotal point of support ot one of said links and through ,its point of pivotal connection with the type bar Willintersect with a correspondingline drawn through the corresponding points of the other link, the said point of intersection being approximately on a line tangent tothe platen at the' printing point.

lio

15, In a type action, the combination of'a type bar, a, pair of links for supporting the bar, 'af pair of printing keys, and'mea'ns controlled thereby for actuating said type bar selectively to print from one or another type tl'iereondepending on which key is actuated, said meaiis including motion governing means for decelerating the vlinal printing movement of the type bar and substantially noiselessly pressing the type against the platen, said first mentioned means also including means for shifting the pivotal center of one only of said links, the construction and arrangement 'of the parts being such that when the type bar is in printing position -a straightline passing through the pivotal point of support of one of said links and throughits point ofpivotal connection the type barI will intersect with a corre- With iso

- *wur- Ew i 1 `v ,bar from such position, said'limiting-means comprising toggle members which are moved :from the printing point Whether the type bar be actuated by one or the other of said keys.

lb'. In a typewriting machine, the combination ot a platen; a front stroke type bar carrying a plurality of types; a pair of` printing keys; and means controlled thereby t'or causing said type bar to move through diiierent paths to selectively print from one or another vtype thereon in accordance With the printing key which` is actuated, said mea s comprising a pair' of links on' which sa-'i'd vype bar is supported, asupporting lever on which the supporting link nearest theil type-carrying end of the type bar is pivoted,

`an angular lever, a link connecting said levers, andl toggle' members intermediate one of said keys and said angular lever and normally in a substantially. straight-line 'holding position. f 'y .l

17 ln a typewriti'n'g machine, thecoinbination of a platen; a front-stroke type bar carrying a plurality of typesga pair of printing keys; and .means controlled thereby i'or causing saidtype vbar to move through different paths to selectively print from one or another type thereon ini accordance with the printing key which is actuated and to press the type in a substantially noiseless manner against the platen or the paper thereon, said means comprising a pair of supporting links forthe type bar, a supporting lever to which one ofsaid links is pivoted and which. is connected to be actuated by only one of said keys, the construction and arrangement of the parts being such `thatthe point-'of pivotal connection between said supporting lever and the link connected therewith moves from a point above a hori- Zontal line passing through the ulcrum of said lever to substantially a corresponding distance below said line, and toggle members intermediate one of said keys and said supporting lever and normally in la straight-line holdina position. f

18. in a type action, the combination 'of a type bar, actuating means therefor, and means in addition to said actuating mea'ns for substantially noiselessly' limitingl the re'` turn motion of said type bar to normal. positionand preventing arebound of the type substantially to straight-line positionl by the return motion of the type bar and normally remain in such position.

19. lin a 'type action, the combination of a typebar, actuating means" therefor, and means in 'addition to said actuating means for limiting thel return motion-o said type bar to normal position and preventing a rebound 'of the-type bar from such position, said limiting means comprising toggle meinbers which `are moved substantially to straight-line position by the return `motion of the type` bar, and means whichfenable said toggle. membersl to break from said substantially, straight-line position when the type bar receives .a its actuating means.

- 20. ln a type action, the combination of atypc. bai', actuating means therefor, a pair of links pivotally united and connected at printing movement by -oneend to the type;bar actuating-means and a type bar, and ineans'or limiting the re'- turnmotion of said-type bar to normal position comprising toggle members which are moved substantially to straight-line position by the return motion of the type bar, and means which enable said toggle members to break from said substantially straight-line position when the type bar receives afprinti .ing movement, said last mentioned means comprising a slotted bearing 4for one of the pivots of said toggle members, said slotted bea-ring extending longitudinally at an angle to a. .straight-line passing substantially through the pivots of said toggle members when the latter are in a straight-line position. l

22. lin a type action, the combination of a type bar, actuating means therefor, and

lmeans in addition to said actuating means for substantially noiselessly limiting the return motion of said type bar to normal positionand for' preventing a rebound thereof from normal position, saidlimiting means comprising' a link pivoted at one end to a relatively fixed point and operatively connected at the other end with a part of the type action, .said link being displaced during ythe return movement'of the parts to-a osition whereit dead centers `against said iixed' pivot andvthus arrests the return movement of the typebar to normal position, the

said link normally remaining substantially in said dead centered position.

23.' ln a type action, the combination of 'atype bar, and means-for limiting therer turn motion of said typebar. to normalposi 'tion comprising toggle members which are moved substantially to straight-line position by the return motion of thetype bar, and

means which enable said to lgle members to break yfrom said substantia y straight-line position when the typebar receives a printing movement,- said -last mentioned means comprising slotted bearings for pivots of said toggle membergeach slotted bearing exiii tending longitudinally at an angle to a straight-line substantially through' the piv- "ots of said toggle members when the-latter are in a straight-line position.

24. In a type action, the lcombination voi a typeA bar; actuating. means therefor; and, vmeans in addition to said' actuating means for substantially noise'lessly limiting the return motion of said type bar to normalpos'ition and for preventing rebound therefrom, said limiting means comprising togglemembers which are lmoved substantially to straight-line position by the return motion of 'tlietype bar, and means for preventing said toggle membersA from moving in one direction any considerable'distance beyond.

the straight-line position,said last mentionedmeans coming into action only when said toggle members pass beyond the straightline position.

25. In a type action, the combination of a typebar, actuating means therefor, and means in addition toisaid actuating means lttor substantially noiselessly limiting the return motion of said type bar toynormal position and. forv lpreventing rebound thereof from such position, said limiting means com,- prising toggle members which `are moved ysubstz'intially to straight-line position by the return motion of the type bar, and 1o-acting rigid-stops which are brought into co-operati'on with each other only when the' toggle members pass 'beyond the straight-line position inftheir return movement, thus preventing said toggle 'from moving a` substantial -distanoe in one direction beyond said l type bar; actuatingmeans straight-line position.

26. In a type action, typef bar; actuating means the combination ot a therefor includ- 'ing motion governing means loperating to decelei'ate the final portion-of the printing movement of the type bar; and means for I'arresting the return movement of theltype bar and governing means to normal position, saidA arresting means .comprising a pair of' A pivotally connected links pivoted'at one end to the motion governing means and at the other end to a fixed part, the links being movable' substantially to a straight-line position on the return of the type bar to arrest the parts in normal position. r

27. In a type action, the combination therefor including motion governing means operating to decelerate the final movement of the type bar; andv means for arresting Athe return movement of the type bar and governing means .to normal posi.

tion, said arresting means comprisingl a pair of pivotally connected linkspivoted at ,one

end tothe motion governing means andv at the other end to la iXed part, the links being movable substantially to astraight-line position arrest the parts in separately a ried thereby;

'of a portion of, the printing.

on 'the return oi the type' bar tonormal position,` and' means for preventing said links when in a straight line position fromlinterfering with a printing movementof j the; governing means and type bar.

28. 'In a type action,-

type bar; actuating meansl 'therefor including motion-governing means operating to decelerate the inal portion of the printing movement of the type bar; and meansy for arresting the return movement' of the type bar and governing -means to-normal posi-` tionsaid arresting means comprising a pair of pivotally connected "links piroted at oneend to the'motion governingvm'eans and at the other end to a' fixed part, the links being 'movable substantially to a straight-line posicarried by said bracket, and a guide carried by and adjustable and detachableivith said bracket and coacting with said cti-operative actuating devices to prevent them from being displaced out of co-operative relation.

'30. In a type action', the combination of a separately' adjustable and detachable supporting hanger or bracket, a type'bar oarried thereby,

a plurality of co-operative key controlled actuating devices for the type bar carried bysaid; bracket, and a guidecomb sec redV to said bracket-and adjustable and detachable therewith, said actuating devices Working in the slots of saidguide comb and maintained in cti-operative relation.- 31, In a ty` e action, the combination of a justable and detachable supporting/handeror bracket; a type bar cara a plurality of co-operative key the combination oi a being thus held against lateral deflection and controlled actuating devices for the type barl carried'by said bracket, said. actuating devices comprisingtwo keycontrolled sublevers, anda main "driving lever having two leverarms with which sai'dsublevers co-.act with a rolling action thereon; and a guide comb secured to said bracket and receiving in the guide 'slots therein said sublevers and lever ari'ns to maintain them in proper cooperative relation, said guide' comb' `being adjustable and detachable With said bracket.

32.- In a typewriting machine, the combination of aseparately adjustable and detachable bracket-or hanger; a pair of supporting links carried by said bracket; a type bar carried by said'supporting links; tvvo printing keys; actuating means between said iso' printing keys and type bar comprising a pair of subs-leverseach separately controlled byone of saidv printing keys, and a main driving lever having a pair of lever arms with which said sublevers coact With a rolling action; and a guide comb secured to said bracket and in the guide slots` in which said lcri-operative sublevers and lever arms Work and are held against relative lateral displacement, said guide ecmb. beingpadjustable 10 and detachablevvith the bracket. I

Signed at Middletown, in the' county of Middlesex, and State 0f Connecticut this 20thy day 'of June, A. D. 1925.v

'GEORGE G. GOING.

Images