US958778A

US958778A - Type-writing machine.

Info

Publication number: US958778A
Application number: US26044105A
Authority: US
Inventors: Arthur W Smith
Original assignee: YOST WRITING MACHINE CO
Current assignee: YOST WRITING MACHINE CO
Priority date: 1905-05-15
Filing date: 1905-05-15
Publication date: 1910-05-24
Anticipated expiration: 1927-05-24

Description

A. W. SMITH.

TYPE WRITING MACHINE.

APPLICATION FILED MAY 15, 1 905. 958,778. Patented May 24, 1910.

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TT RN A. W. SMITH. TYPE WRITING MACHINE. APPLICATION FILED MAY 15, 1905.

Patented May 24, 1910.

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7rxfmafi 1-h5 TTEIRNEY A. W. SMITH.

TYPE WRITING MACHINE.

APPLICATION FILED MAY 15, 1905.

958,778. Patented May 24, 1910.

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INVENTEIFM 'I-IIEI TTCJFQNEY.

UNITED STATES PATENT OFFICE.

ARTHUR W. SMITH, NEW YORK, N. Y., ASSIGNOR TO YOST WRITING MACZ-IINE COMPANY. OF ILION, NEW YORK, A CORPORATION OF NEW YORK.

'rrra:wnrrnvor- MACHINE.

Specification of Letters Iatent.

Patented May 24., 191 0.

To all whom it may concern:

Be it known that I, ARTHUR-V. SMITH, citizen of the United States, and resident of the borough of Manhattan, city of New York, in the county of New Yorkand State of New York, have invented certain new and useful Improvements in Type-Writing Machines, of which the following is a specification. a

My invention relates to typewriting machines and more particularly to the type actions thereof, and one of the objects of said invention is to provide alight and-efficient type action which is speedy in operation and wherein there is a uniform leverage and a uniform extent of dip or depression of the keys throughout the system. 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 to be hereinafter described and particularly pointed out in the appended claims.

In the accompanying drawings, wherein like reference characters indicate corresponding parts in the various views, Figure 1 is a vertical front torear sectional view of a sufficient number of parts of a typewriting machine to illustrate, my invention in itsapplication thereto. Fig. 2 is a detail side view of one of the key levers. shown depressed. Fig. 3-is a vertical transverse sectional view taken on the line .rm of Fig. 1 and looking in the direction of the arrow at said line, and with some of the parts broken away to better illustrate other features of the construction. Fig. .4 is a detail perspective view, with parts broken away, of the detachable auxiliary frame carrying the segments on which the type actionsare supported. Fig. '5 is adiagrammatic side elevation of a series of key levers and the actuating bell cranks connected thereto. Fig. 6 is an enlargeddetail side elevation of one of the type bar actuating bell cranks. ,Fig. 7 is an enlarged detail side elevation of one of the type bar actuating bell cranks and the hanger therefor, the hanger and the segment to which it is secured being shown in section. Fig. 8 is a detail longitudinal'sectional view of one of the jointed type bars, the view being taken on the line fl/ fl/ of Fig. 9 and looking in the direction of the arrow at said line and illustrating a type bar in printing position. Fig. 9 is an edge View of a type bar when the parts are in the printing position, the view looking in the direction of the arrow in Fig. 8. Fig. 10 is a fragmentary portion of one of the key levers. Fig. 11 is a detail top plan view of oneof the, hangers for the type bar actuating bell cranks, the segment-to which said hanger is secured being shownin section.

The main frame of themachine comprises a base 1 with side-portions or plates 2 and a rear end 3; a suitable top plate 4. being cured to the side members and rear end of the frame. .An auxiliary detachable frame 5, which is shown in detail in Fig. 4:, comprisesa front lowermost segment (3, a second segment 7 above the segment 6 and a segment 8 which supports the type bar actuating levers or drivers in place. These segments are united by any suitable means independent of the main frame and are preferably formed as a single casting. The forwardlyprojecting arms 9 of the auxiliary frame have tapped openings in which headed screws 10 are received. The screws 10 secure in place a comb plate 11 which receives the key levers 12 in the openings 13 in order to properly space the lovers at their forward ends and guide them in their movements. Rearwardly projecting arms l-l of the auxiliary frame 5 are provided with bearing openings 15 to receive a shaft or hearing rod 16 which may be supported and fixed in the arms so that the rod may constitute a bearing on which the rear ends of the key levers are pivotally supported. The connection between the key levers and the bearing rods 16 is preferably formed by a loop or bearing 17 at one end of a leaf rod so as to be free to turn thereon and to form spacing means for maintaining the key levers properly spaced apart at their rear ends. Each of the springs 18 tapers from the rear bearing loop 17 to the front end thereof, as shown in Figs. 3 and 10. so that the springs will not interfere with each other when the key levers are actuated. The forward end of each leaf spring 18 is prefem hly apertured at 19 to receive upwardly pro ect ing rivets 20 that extend from the upper spring 18, said loop surrounding the bearing enlarged detail perspective view of the rear edge of the main body portion 21 of an assoc'fiat'ed key lever 12. The forward end of the body portion of each key lever carries an upwardly extending finger key 22 that may be riveted to the body portion as indicated at 23. The body portion of each key lever may have an upwardly extending member 24 that is received in one of the openings 13 in the comb plate. Each key lever has an upwardly extending connecting or draw link 25 pivoted thereto at 26 and the upper end of the link is pivoted at 27 to hell crank or angular-type bar actuating lever 28.

From an inspection of Fig. 3 it will be seen that the draw links 25 are of progressively greater lengths from the center to the sides of the system so as to cooperate with the different bell cranks 28which are seg mentally arranged. Each bell crank has two openings 29 and 30 therein, said openings extending transversely therethrough and constituting in effect a single substantially V- shaped opening that forms pivotal bearings -at the upper ends thereof. Thus, the upper end 31 of the slot or opening 29 constitutes a bearing or seat for coiiperation with a fixed pivot 32, while the upper end 33 of the slot 30 constitutes a bearing seat for a fixed pivot 34 and each slot 29 or 30 is concentric with the-pivot that is received in the other slot. For instance, the slot 29 corresponds to an arc of which 34 is the center, whereas, the slot 30 corresponds to an arc of which the v pivot 32 is the center. The pivots 82 and 34 extend through the openings 29 and 30 in the bell crank and are riveted at their ends, as at 34*, to the bifurcated arms 35 of the individual hangers 36 as indicated in Fig. 11. Each hanger 36 is preferably split so as to provide a bifurcated portion, between the arms 35 of which an actuating bell crank may be seated and connected thereto by the

pivots

32 and 34 in the-manner described. Projecting rearwardly from each hanger 1s a cylindrical hanger stem 37 which extends through an opening 38 in the segment 6.- The rear end of the stem is threaded for cooperation with a nut 39 that has a slot 40 for cooperation with a screw driver in order to secure the hanger in place.

It will be understood that the forward end of the nut bears against the rear face of the segment 6 and draws the shouldered portion 41 of the hanger against the front face of the segment and thus securely holds the hanger in position on the segment. lVhen the nut 39 is loosened it affords an adjustment of the hanger and the associated bell crank around a center defined by the longitudinal axis of the hanger stem, which adjustment I refer to herein as a pivotal adjustment. This' method of mounting the hangers 36 facilitates the assemblage of the parts and enables the bell cranks to be adjusted in parallel vertical planes, although they are disposed at progressively greater heights from the center to the sides of the seams system, or, in other words, they are vertically and segnientally arranged as illustrated in Fig. 3.

The leaf springs 18 and body portions 21 together constitute key levers 12 which are pivoted on the rod 16 so that all of the key levers are pivoted at their rear ends in a single transverse plane, whereas, the forward ends of the levers extend to different distances toward the frontof the machine and the key stems vary in height. The key levers thus provide four different banks of keys 22 arranged fore and aft of the machine in different transverse rows; all of the key levers for the same bank of keys being of the same length, and from an inspection of Fig. 5 it will be understood that the cdnnecting links 25 are connected to the key levers and to the bell cranks at ditlerent'drstances fore and aft of the machine depending on the length of the key levers. Thus, for instance, all of the shortest key levers, that have their keys in thefourth bank counting from the front of the machine, are connected to links at points farthest from the fulcrums of the key levers and are connected to the bell cranks at the farthest points from the fulcrums thereof and nearest the outer ends of the forwardly projecting arms of the bell -levers of the fourth bank of keys and the points of connection between the links 25 and the key levers of this row and their respective bell cranks are nearer the fulcrum s of the key levers and bell cranks. The key levers of the second row of keys are longer than those of the third and fourth rows of keys and the for the second row are nearer the fulcruzns of the key levers and sub-levers, Whereas, the key levers for the first row of keys are longest and the links 25 are connected thereto nearer the fulcrums of the key levers and are connected to the bell cranks nearer the fu'lcrums thereof than any of the key levers of the other rows of keys. The pu ose of this construction is to compensate or the difference in length of the various key levers and to equalize the leverage throughout the system of type bars and to provide a uniform extent of dip of the various fin er keys, notwithstanding the difference in ength of the various key levers. Extending upwardly and rearwardlyfrom the upright arms of the sub-levers or bell cranks area series of segmentally arranged draw links 42 which are pivoted at their forward ends to the sublevers as indicated at 43 and are pivotally connected at their rear ends at 44 to crank arms 45 of the type bar actuating levers or drivers 46. These drivers are each pivoted at 47 to a hanger 48 that has its depending stem 49 secured to the rear face of the segpoints of connection between the links 25 and the key levers and bell cranks ment 8 by two headed screws 50th: pass freely through openin in the stem of the -hanger and screw at t ir forward ends in the tapped openings 51 in the segment. Each of the drivers has anear 52 that is;pertorated to receive one end of a restoring spring 53, the forward end of said spring being secured to the associated draw link 42 so that the tendency of said contractile restoring spring is to draw the forward end of the associated actuator or driver 46 down and to elevate the key lever by effecting a rearward pull on the upwardly directed arm of the associated sub-lever 28.

Each actuator 46 is received between two plate-like members 5st that are maintained spaced apart by shouldered rivets to form a type bar proper 55; and the actuator is pivoted at to said type bar proper intermediate the ends thereof as indicated in 1 and 8. The front end of each type bar is pivoted at 57 to a guide link 58, which in turn is pivoted at its upper end on a pivot wire 59 seated in a longitudinal groove 59 in the segment 7, each guide link working in a transverse guiding slot 60in said segment. A. finger or abutment 61 projects from each actuator or driver to beyond thepivotal connection and this abutment cooperates with an abutment ()2 which is formed by a shouldered rivet between the side members 54 of the type bar. The cooperation between the two abutments 1 and (32 takes place just before the type bar reaches the printing position so that after the abutments are brought into cooperation the type bar proper 55 and its assoclated actuator or driver 46 will move together one around the pivot 47 of the driver, the linger or abutment (31 being received be tween the side plates or members 5 5, thus preventing any relative lateral play or movement between the actuator and type bar and tending to further stiffen the type bar at the last portion of the printing stroke.

. From an inspection of the dotted line showing of a type action in Fig. 1. it will he understood that the construction and arrangement of the parts of each action are such that a bending of the finger 1 is effective to lengthen or shorten the distance between the type and the pivot 47 and thus adjust the type up or down when the parts of the tvpe action are in the printing position. filing away a part of the linger 1 the distance in question is shortened and a correspondingadjustment (it the type etl'ectcd.

blo k i i is received between the side plates or members 54 of each type bar at the free end thereof. the side plates and block being riveted together at ($4. The block extends beyond the free end of the tvpe bar proper where it is provided with an opening 65 (Fig. 9) which is shaped to receive it will likewise be observed that by" a conoidal stem 66 that extends from the rear face of the. type block (37, the Steinbeing disposed opposite one of the types, preferably the lower case type 68.

From an inspection ofFig. 8 it will be 0h- 7 served that the construction and disposition of the parts is such that when the type baris in printing position the pivotal connection 57 between the guide link 58 and an end of line drawn through the pivots l7 and 59 of the associated guide link and a'ctuatorrespcctively as indicated by the dotted line a in Fig. 8. It is important that substantially this disposition of the parts be maintained so in order that the type bar may strike with full force during the printing stroke and in order that the type bar proper 55 and its driver 46 may swing together as one part portion of the printing stroke.

A segmental inking pad 9 is supported with its inkingt'ace inclined in a metallic trough or support 69 that rests on bracket certain of the screws 50whi'ch secure the hangers 48th the segment 8, so that the inking pad is supported above said segmentinpart by the brackets 70 and in part by the hangers 48 and thus the type res-t or inking 95. pad is supported by the segment 8. The type bars normally rest with the printing faces of the types against the inking pad and in the movement of a type actidn to the scribes a path of movement indicated by. the dottedliine b in Fig. 1; that is to say, it moves first upwardly and forwardly and then rearwardly in a substantially horizontal direction to impact with the platen 71 which is diagrannnatically shown in Figs. 1' and S. The platen may be shifted for upper and lower case printing by any suitable means. In moving to the printing position the type block is received in a fixed type guide 72 that is supported at its lower end on the top plate of the machine. The inner walls of the central opening in the type guide are beveled as at 73 for cooperation guide it in its movement to the printingposition. and the left hand side of the type guide is cut away at 74 in order that the last written letter or character may be presented to the view of the operator when the carriage' is fed to the left a letter space distance. There is therefore no appreciable obstruction of the operators View of the printed matter by the type guide, IIOtWltlh standing the fact that it surrounds the type block on all sides to properly direct it to the printing position.

It is desirable not only to connect the key levers of difl'erent lengths at different points in the sub-levers 28 as shown, in the diagram the type bar proper 55is slightly above a 5 around the pivot 47 as a center at the last 35 arms 70 which may be secured in place by o printing position the lowercase type de- 100 with the side walls of the type block to 115 in Fig. 5, but it is also desirable to arrange I qthe key levers of the first row of keys '(counting from the front of the machine) are at one height in normal position thereof, whereas the key levers of the second row of keys are at a slightl greater elevation in the normal position t erect, and the key levers of the third row of keys are slightly higher than those of the second'row and the key levers of the fourth row of keys are at the greatest height. In other words the key levers have their keys arranged in four banks and adjacent key levers have their keys in different banks and are of diiierent lengths and arranged at different heights (see Figs. 1 and 3).- Nevertheless, the keys 22 0f all the key levers have the same extent of depression or dip as is indicated by the full and dotted line showing of the keys in Fig. 5.

' A universal bar extends transversely beneath the various key levers at about the center ot the points of eonnectionoi the links 25 to the key levers as indicated in Fig. 5; The upper edge of the universal bar is spaced apart from the lowermost key levers for, say, about one sixteenth of an inch so that there isa free movement of all of the key levers before the universal bar is taken up and movement transmitted therethrough to the escapement mechanism. The key levers are arranged in sets of four from side to side of the machine and the levers of each set are at progressively greater distances from the universal bar from one side of the set to the other. The key levers bein at difierentdistances from the universal ar,

of course, have different. extents of free movement before the universal bar is taken up, the extent of free movement defpending upon the distance or" the key levers roin the universal bar in the initial positions of the key levers; but the universal bar is, nevertheless, depressed to the same extent b all of-the key levers, inasmuch as they al are depressed to the same plane as indicated by the dotted line 0 in Fig. 5.

. The actuation of the escapernent mechanism is always the same irrespective of the key lever depressed and irrespective of the different initial positions of the key levers, inasmuch as the universal bar is taken up and depressed to the same extent by the different key levers and the escapement mechanism, actuated through the universal bar, is always actuated in the same manner irrespective of the key lever depressed. The

ongest key levers, that scares is normally in the lowest position when at rest be actuated. mLhe universal bar 75 is connected at its ends to side arms 7 6 which in turn are rigidlyconnected to a rock shaft 77 that turns on bearing screws 77 received in the base of the machine and a restoring spring 75 cooperates with one of said arms to normally maintain the universal bar in theelevated position. A rearwardly extending arm 78 rejects from the shaft 77 and the end of t is arm is connected to an upwardly extending link 79 that in turn isconnected to a forwardly extending crank arm 80 of a dog rocker 81 pivoted at 82 and carrying the usual feed dog 83 which cooperates with a feed rack 84. carried by the carriage (not shown). I have merely shown a conventional form of escapement and it should be understood that any suitable escapement mechanism may be employed. By actuating the universal bar in the manner described, I am enabled to effect an almost complete printing movement of. the type action before the universal bar is taken up so that the escapementmechanism will not retard the type action, the weight of the escapernent mechanism not being added to the type action until the momentum necessary for the printing stroke has been acquired.

By employing the leaf springs 18, each connected at one end to a body portion 21 of the key lever 12 and each pivoted at its rear end, I am enabled to obtain a soft, easy and resilient touch that. automatically accommodates itself to the stroke of the operator whether the operators stroke be a quick, sharp blow or a long following stroke. Thus,- ii"ythe operator should have a quick, shar blow or touch, the power applied to the nger key may cause the leaf spring 18 to be bent slightly before the difierent parts of the type action have been set in motion. At the inltial portion of the stroke, a quick, sharp blow transmitted with a finger key will cause the body of the keylever to turn on a pivot 26 andslightly flex the associated spring 18 so that the full weight or resistance of setting the different parts of the type action-in motion is not given back to the finger of the operator. If, on the other hand, the operator should have a long, following stroke which tends to press the key h.

after the type bar has reached the printing osition, then the body portion 21 of the rey lever will turn on the pivot 26 after the type bar has reached the printing position and will cause a fiection of the associated spring 18 and the sudden shock'or jar incident to the arrest of the type ha'r b .the' platen will not be transmitt to the ger of the operator. Thus it will be seen that each type act-ion accommodates itself to the touch' of dili'ei ent operators and aiiords an easy and soft action which is devoid of shock or jar either at the initial portion of lever-and its associated link 25.

against its tension.

the stroke, when the parts are being set in motion, or at the end of the stroke, When the type bar has reached the printing position. The flection of the spring 18 at the terminal portion of the stroke is illustrated in Fig. 2 from which it will be seen that the point 26, being arrested by the "type bar contacting with the platen, a further depression of the key will turn the body portion of the lever on the pivot 26 and will flex the, spring As soon'as the undue pressure is relieved the spring'will tend to straighten itself and the parts of the key lever assume their normal relations.

By providing two

pivots

32 and 84 for each sub-lever or bell crank 28 to turn on I am enabled to accelerate the type bar during its movement from the normal to the printing position and to afford an easy action at the initial portion of the stroke. Thus, when the parts are in. thenormal position the sub-lever 28-will be in the full line position represented in Figs. 5 and 7, with the longest extent of leverage on the arm 28*, the leverage being from the pivot 34 to the point of connection27 between said As the key lever is depressed, the sub-lever will turn on the pivot 34 until the type bar has acquired its momentum and will shift from the bearing 3334 to the pivot 32 when the upper bearing Wall or portion 31 of the slot 29 is brought into contact with said. pivot so that during the last portion of the stroke the bell. crank will vibrate around the pivot 32, and the leverage is from the ivot 32 to the point of connection 27, therey shortening the leverage on the arm 28 of the bell crank and accelerating the movement of the type bar at the last portion of the printing stroke. Fig. 6 illustrates the position of the sub-lever when it is just about to change from the pivot 34 to the pivot 32, and this is at approximately one- ]half. of the length of movement of the subever.

By my construction it will be seen that every member or part of each type action is carried by the frame 5, that the different segments constitute parts thereof, and that this frame may be readily secured to or removed from the mainframe of the machine by four headed screws 85 that extend through the main frame at each side thereof and take at their inner ends into threaded openings 86 in the supportin frame 5. By this construction I am enable to mountand adjust the several portions of the various type actions of the system in the supporting frame 5 therefor outside of the main frame of the machine, thereby greatly facilitating the assen'iblage of the )arts, and after they are all assembled in place on the frame 5, said frame may be secured in the main frame of the machine by the four screws 85. This construction greatly facilitates the manufacture of the machine and enables repairs to be readily effected without dismounting various individual parts of the construction in order to gain access to the part or parts to be replaced or repaired.

From the foregoing description it will be understood that the pivotal connection between the guide link and type bar of each action, the fixed pivot of the guide link and the fixed pivot of'the driver are substantially in thesame plane when the type is in the printing position; or as it might be otherwise expressed, the pivotal end of each type bar,jthe fixed pivot of the associated guide link and the fixed pivot of the associated driver are substantially in a straight; line extending fore and aft-of the machine when the type bar is in the printing position. It will also be'observed that the operative points" of connections of the type bar actuating devices with the key vers are in different transverse planes; that the operative connections to the key, levers from said actuatin devices are also in dif ferent transverse p anes, and that all ofthe points of operative connection to the key levers of the same length from said type bar actuating devices are in the same transverse plane.

While I have described my invention with considerable detail'it should be understood that various features thereof may be employed without other features of the invention, and that various changes maybe made without departing, from the. spirit of 'my invention. v

hat I claim as new and desire tosecure by Letters Patent, is r 1. In a typewriting machine, the combination of a type carrier, a finger key, and an intermediate sub-lever that turns on a plurality of pivotal centers at each printing operation to afford a change in the leverage during the operation of said sub-lever.

2. In a typewriting machine, the combination of a type carrier, a finger key, and an intermediate bell crank that turns or a plurality of pivotal centers to afford a change in the leverage during the movement of said,bell crank.

3; In av typewriting machine, the combination of a key lover, a type carrier, and an intermediate bell'crank operatively con-- nected to said key lever and type carrier and turning on a plurality of fixed tors during the movement of sai bell crank to afford a change of leverage during the depression of the key lever.

4-. In a typewriting machine, the combination of a key lever, a type carrier, a sublevcr that turns on a plurality of fixed pivols art-each printing operation, and links-that connect the sub-lever to the type carrier and key lever.

ivotal cem' 5. In a typewriting machine, the combination of a-key lever, a type carrier, a bell crank .that turns on a plurality of fixed pivots and afi'ords an automatic change of leverage during the-operation thereof, and links that connect the bell crank to the type carrier and key lever. I l

6. In a front strike typewriting machine, the combination of a series of segmentally arranged type bars, a series of finger keys therefor, and a series of intermediate bell cranks operatively connected to said type bars and finger keys and each turning on a plurality of fixed pivots and affording a change of leverage during the operation of the bell cranks.

7. In a front strike typewriting machine,i

the combination of a series of segmentally arranged type bars, a series of key levers therefor, a series ofintermediate bell cranks each turning on a plurality of fixed pivots and affording a change of leverage during the operation of the'bcll cranks, a series of links connecting the key levers to the bell cranks, and a series of links intermediate the hell cranks and type bars.

8. In a front strike typewriting machine, the combination of a series of segmentally arranged type bars, a series of key-levers therefor, a series of segmentally arranged intermediate bcll.cranks, a series of hangers for said bell cranks, each bell crank turning on a plurality of fixed pivots on its as sociatcd hanger and affording a change of leverage during the printing operation.

9. In a typewriting machine, the combination of a type carrier, a key lever therefor, an intermediate actuating device between the key lever and type carrier, and'an individual hanger for said actuating device, the pivotal connection between said actuat; ing device and hanger being effected by a plurality of pivots that aii'ord a change of everage during each operation of the actuating device.

10. In a typcwriting machine, the combination of a type carrier, a finger key therefor, an intermediate bell crank between. the finger key and type carrier and operatively connected thereto, and an individual hanger for said bell crank, said hell crank and said hanger being connected by a plurality of pivots that af ord a change of leverage during the operation of the bell crank.

11. In a typewriting machine, the combination of a type carrier, a finger key therefor, an intermediate actuating device, and a hanger therefor, one of said actuating device and hanger elements being bifurcated to receive the other and one of said elements havin a plurality of pivots with which the ot or e ement cooperates to afiord a change of leverage and an acceleration of the type bar as it approaches the printing position.

12. In a typewriting machine, the combination of a type carrier a finger key therefor, an intermediate bell crank operatively connected to the finger key and type carrier, and a hanger for said bell crank one of said bell crank and hanger elements being bifurcatcd to receive the other and one of said elements having a plurality of pivots with which the other element cooperates to aiiord a hanger for said bell crank, one of said bell crank and hanger elements beingbifurcated to recelve the other and one of said elements "having a plurality of pivots with which the other elcmentcoiiperates to afford a change ,of leverage, and means for affording an axlal adjustment of said hanger.

14. In a typewriting machine, the combi nation of atype bar, a separate type bar actuating device'operative to move the type bar to the printing position, and a bifurcated hanger that receives said device and which has a plurality of pivots with which the device cooperates to afford. an automatic change of leverage during the operation thereof and an acceleration of the type bar as it approaches the printing position.

15. In a typewriting machine, the combination of a type bar, a separate type bar actuating bell crank operative to move the type bar to the printing position, and a bifurcated hanger which receives said bell crank and which has a plurality of pivots that connect the bell cran to the hanger and with which the bell crank coiiperates to afford an automatic change of leverage during.

the operation thereof and an acceleration of the type bar as it approaches the printing position.

16. In a typewriting machine, the combination of a type bar, a type bar actuating device, a fixed support therefor having a plurality of stationary ivots; said actuating device being mount to fulcrum first on one stationary pivot and then on another, the said actuating device being slotted concentrically with said stationary pivots.

17. In a typewriting machine, the combination of a ty bar actuating bell crank, and a hanger t erefor one of said elements having a plurality of slots and. the other having a plurality of pivots contained in saidslots, so that the bell crank rides first on one pivot and then on another to eii'cct an automatic change of levera e.

18. In a typewriting mac inn, the combination of a'type bar a separate ty e liar actuating bell crank having a, plurality of slots therein and operative to move the type bar tothe printing position, a bifurcated hanger that' receives said-bell crank in the bifurcated portion thereof, and a. plurality ofpivots that extend from side to side of the bifurcated portion of the hanger and through'the slots in'the bell crank and afford a; change of leverage of the bell'crank during'the operation thereof and an accelerated movement of the type bar as it approaches the printing position.

19. In a typewriting machine. the combi-,

' of the bifurcated portion of the hanger and through the slots inthe bell crank and unite said bell crank and hangef, each of the slots in the bell crank being concentric with a pivot other than the one contained therein, whereby the bell crank is adapted to turn first on one pivot and then on another to effect an automatic change of leverage during the movement of the bell crank.

20. In a typewriting machine, the combination of a type bar actuating device having a. substantially V-shaped pivot-receiving opening therein, and a fixed support having two pivots that are received in said opening.

21; In a typewriti'ng machine. the combination of a type bar actuating lever having a substantially V-shaped pivot-receiving opening therein, and a fixed-hanger having two pivots that are received in said opening.

In atypewriting machine, the combination of a type bar actuating bell crank lever having a substantially V-shaped pivotreceiving opening therein, and a bifurcated hanger that receives said bell crank and has two ivots that extend through said substantially V-shaped opening.

23. In a typewriting machine, tl1e;con1bination of a type bar actuating bell crank having a substantially V-shaped pivot-receiving opening therein, a bifurcated hanger that receives said bell crank and has two pivots that extend through said substantially V-shaped opening, a key lever operativeiy connected to said bell crank. and .a type bar also operatively connected to said bell crank.

24. In a front strike typewriting machine, the combination of a series of segmentally arranged type bars, a series of key levers therefor. and a series of segmentally arranged bell cranks operatively connected to the type bars and key levers and each having two pivots on which itturns during the depression of its key lever to afford an auto- 26. In a typewriting machine. the combination of a type bar, a rigid key lever therefor, and a leaf spring connected at one end to the key lever and having a pivotal bearing at the other end around which the key lever turns.

27. In a ty 3 writing machindthe combination of a tying bar, a rigid key lever therefor, and a leaf spring riveted at one "end to the key lever and having a pivotal bearing formed fromthe spring at the other end thereof and on which the key lever turns.

28. Iii-a typcwriting machine. the combination of a pivotrod, a series of $L)1'i i, jS

having pivotal bearings cooperating r'itn said pivot rod. a series of key bearing bars rigidly connected to said springs so that the pivotal bearings for the springs constitute pivotal centers on which the key hearing bars vibrate. and type bars operatively connected to said key bearing bars.

29. In a typewriting machine. the coinbination of a pivot rod. a series of springs having pivotal bearings formed therefrom and which surround and cooperate with said pivot rod. a series of key hearing bars rigidly connected to said springs so that the pivotal bearings for the springs constitute pivotal centers on which the key bearing bars vibrate. and type bars operatively connected tosaid key bearing bars.

30. In a typewriting machine, the combination of a pivot rod. a series of leaf springs having pivotal bearing loops formed therefrom aiid which surround and cooperate with said pivot rod, a series of key bearing bars rigidly connected to said springs so that the pivotal bearing loops of the springs maintain the key bars spaced apart and constitnte pivotal connections on which the key bearing bars vibrate. and type bars operatively connected to said'key bearing bars.

31'. In a typewriting machine, the combination of a pivot rod, a series of leaf springs having their rear ends bent to form pivotal loops or bearings that surround the pivot rod and turn thereon. the said bearing loops being wider than the body portions of the ed to said springs, type bars. and means connected to said keys for actuating said type bars.

32. In a typewriting machine, the combination of a pivot rod. :1 series of tapering leaf springs having their rear epds bent to form pivotal loops or bearings that sur-- round the pivot rod and turn thereon. the

said bearing loops being wider than the body portions of the springs. key bearing liars connected to the forward end of said springs. the bearing loops of the springs constituting means for maintaining the key bearing bars properly spaced apart. type bars, and means connected to said key hearing bars for actuating said type bars.

33. In a typewriting machine, the combination of a key bearing bar, a separate spring connected at one end to the bar and pivoted at its opposite end so as to constitute a pivotal connection on which the key hear ing bar and spring turn, a type bar, and connection from the key bearing bar to the type bar.

34-. In a typewriting machine, the combination with a jointed type bar comprising a type-carrying portion, a guide link and a pivoted driver to which said type-carrying portion is pivoted, and means arranged to come into play at the final portion of the printing stroke to form a rigid connection between the type-carrying portion and said driver, whereby the type-carrying portion ceases to turn about its pivotal connection with the driver and swings about the pivot of the driver.

35. In a typewriting machine, the combination with a jointed type bar comprising a type-carrying portion and a pivoted driver to which said type-carrying portion is pivoted, and means on said driver normally removed from said type-carrying portion but adapted to move into contact-therewith dur" ing the last portion only of the printing stroke of the type bar.

36. In a typewriting machine, the combination with a jointed type bar, of a driver, an abutment-on the driver, and a cotiperating abutment on the type bar proper, said abutments coiiperating during the printing movement to-rigidly connect the parts to move together as one part.

37. In a typewriting machine, the combination with a jointed type bar, of a driver, an abutment on thc-driver, and a cooperating abutment on the type bar proper, which abutments are brought into cotiperative relation during the last portion of the printing stroke.

38. In a typewriting machine, the combination of a type bar proper, a guide link therefor, an actuator, an abutmentcarried by the actuator, and a cooperating abutment carried by the type bar proper.

39, In a typewriting machine, the combination of a type bar proper, a guide link therefor, an actuator, an abutment carried by the actuator. and a cooperating abutment carried by the type bar proper, said abutm s being brought into. cooperative relation during the last. portion of the )rinting stroke so as to form in effect a rigic bar'of the actuator and type bar proper at the last.

5!) portion. of the printing movement.

40. In a typcwriting machine, the combination of a link pivoted at one-end to a fixed rtion of the machine, a type bar pivoted atone end to the free end of said link, an actuator pivoted to the t pe bar intermediate the ends thereof, an a utment on the actuator, and a cooperating abutment on the type bar.

41. In a typewriting machine, the. combination of a link pivoted at one end to a fixed ortion of the machine, a type bar pivoted at one end to the free end of said link, an actuator pivoted to thetype bar intermediate the ends thereof, an abutment on the actuator, and a cooperating abutment on the type bar, said abutments being brought into cooperative relation during the last portion of the printing stroke so as to form in effect a rigid bar of the actuator and type barv proper at the last portion of the printing movement.

42. In a typewriting machine, the combinationof a link pivoted 'at one end to a fixed portion of the machine, a typebar pivoted at one end to the free end of said link, an actuator pivoted to the type bar intermediate of the ends thereof, an abutment on the actuator that extends beyond the pivotal connections between the type bar and actuator, and a cooperating abutment on the type bar.

43. In a typewriting machine, the combination of a link pivoted at one end to a fixed portion of the machine, a type bar pivoted at one end to the free end of said link and having type fixed against movement thereon, an actuator in the form of a bell crank pivoted to the type bar intermediate the ends thereof, anabutment on the actuator that extends beyond the pivotal connections between the type bar and actuator, and a cooperating abutment on the type bar.

44. In a typewriting machine, the combination of a type bar having two parallel sides spaced apart and an abutment secured to and extending between said sides, a key operated driver or actuator pivoted to the type bar intermediate of the ends thereof and between the sides of the type bar and having an abutment that cooperates with the abutmenton the type bar, and a guide link pivoted at one end to a fixed portion of the machine and at its opposite end to one end of the type bar.

In a typewriting machine, the combination of a type her having two parallel sides spaced apart and an abutment secured to and extending between said sides, a key operated driver or actuator pivoted to the typchar intermediate of the ends thereof and between the sides ofthe type bar and havin an extension or finger that cooperates Witfi the abutment on the type bar at the last portion of the printing stroke, a guide link pivoted at one end to a fixed portion of the machinc'and at its opposite end to one end of the type bar, whereby during the last portion of the printing stroke the driver and type bar form in effect a rigid bar that turns on the pivot of the driver as a center.

46. In a typewriting machine, the combination of atype her having two parallel sides spaced apart and an abutment secured to and extending between said sides, a type fixed against movement on said type bar, a driver or actuator pivoted to the type bar intermediate of the ends thereof andbetween the sides of the type bar and having an extension or finger that coiiperates with the abutment on the type bar at the last portion of the printing stroke, a guide link pivoted at one end to a fixed portion of the machine and at its opposite end to one end of the type bar, whereby during the last portion of the printing stroke the driver and type bar form in effect a rigid bar that turns on the pivot of the driver as a center, a key lever, and-inteunediete connections lost-ween said driver andkey lever.

47. In; typewriting machine, the combination of a type bar, a guide link therefor, one end of the guide link being pivoted to a fixed point, and the other end to the type bar, and a driver which turns on a fixed pivot and which is pivoted to the type bar, the pivotal connection between the guide link and type bar, the fixed pivot of the guide link and the fixed pivot of the driver being substantially in the same plane when the type bar is in the printing position.

48. In a typewritingmaehine, the com bination ed a type bar, a guide link therefor, one end of the guide link being pivoted to a fixed point and the other end to the type bar, and e driver which turns on a fixed pivot and which is pivoted to the type bar intermediate of the ends'thereof, the pivoted end of the type bar, the fixed pivot of the guide line. and the fixed pivot of the driver being substantially in a straight line when the type her in the printing position.

at?! In a front strike typewriting machine, the combination of a type bar, a guide link pivoted at one end to one end of the type bar and at the'other end to a fixed portion of the machine, and a driver that is pivoted to a fixed portion of the machine and to said tips bar intermediate of the ends thereof, t

e pivotal end of the type bar, the fixed.

pivot of the link and the. xed pivot of the driver being substantiall in a straight line extending fore and aft 0 the machine when the type bar is in the printing position.

59.. In a typewriting machine, the 00111- bination of a universal bar and a series of key levers of dille'ent lengths arranged at diflerent elevations from. the universal bar;

the lower edges of the longest levers being nearest the universal her, the lower edges oi the shortest levers being farthest from the universal bar and the lower edges of the remaining levers being at intermediate dis tances from the universal bar.

51. In a typevvriting machine, the combination of a universal bar, a series of sets of key levers all out of contact With the universal bar when in the normal osition and With keys therefor arranged in different banks fore and aft of the machine, adjacent key levers having their keys in ditlerent banks and being of ditl'ereut lengths and the adjacent key levers of each set being at progressively greater elevations and at progressively greater distances from the universal bar from one side of the set to the other.

52. in a typeWi-iting machine, the combination of a universal bar, and a series at sets of key levers normally out of contact with the universal bar and adapted to contact therewith at the last portion of the printi': strokes, each set comprisingfour key lcve i, with their keyserraugcd four different banks fore and aft of the machine. all of said key levers being fulcrumcdiu a single transverse plane, adjacent key lovers of euph set being at progressively greater elevations and at progressively greater distances from one side of thesct to the other with the shortest key lever of each set farthest from the universal bar.

53. In a typcwriting machine, the combination of a series of key lovers of dillcrcut lengths, a universal bur, said key levers be ing arranged in their normal positions at different distanccstrom the universal bar according to the lengths of the key levers, type bars, and connections from said key levers to the type bars, the connections joining at different distances from the tulcrums of said key levers.

54. in a typcu'riting' machine, the combination of a universal bar, and a series of key levers of difl'ercut lengths, and all of which dip to a single transverse plane and which are located normally at different distances from said universal bar, the (llfilillll'O dcptuuling on the lengths of said key levers relatively one to another. type bars, and connections from said key lovers to the type burs. the connections joining the key lovers at diii'erent distances from the fulcrums ot' the key levers, depending on the lengths of said key levers.

In a typewritingg machine, the combination of a universal bar, and a series of key levers fulcrumed in a single transverse plane and having keys arranged in dilierent banks fore and aft of the maul ine, the key levers ated from the universal bar being determined by the relative length of the lever, type bars, and connections from. said key levers to the type bars, the connections cooperating with the key levers at different distances from the fulcrums thereof depending on the lengths of said key levers.

56. In a typewriting machine, the combination of a universal bar, a series of sets of key levers with keys therefor arranged in different banks fore and aft of the machine, adjacent key levers having their keys in different banks and-being of different lengths and the adjacent key levers of each set being at progressively greater distances from the universal bar from one sideof the set to the other, type bars, and connections from said key levers to the type bars, the connections cooperating with the key levers at different distances from the fulcrums of the latter depending on the lengths of said key levers.

57 In a typewriting machine, the combination of a universal bar, and a series of sets of key levers each set comprising four key levers with their keys arranged in four different banks fore and aft of the machine, all of said key levers being fulcrumed in a single transverse plane, adjacent key levers of each set being at progressively greater distances from one side of the set to the other with the shortest key lever of each set farthest from the universal bar, type bars, and connections from said key levers to the type bars, the connections cooperating with the key leversat different distances from the fulcrumsof the latter depending on the lengths of said key levers.

58. In atypewriting machine, the combination of a series of key levers of different lengths, a series of type bars, and a series of type bar actuating devices between the type bars and key' levers, the points of operative connection to the intermediate ac: tuating devices from the key levers being in different planes transverse of the machine and all key levers of the same length having their points of operative connection to the actuating devices in the same transverse plane.

59. In a typewriting machine, the combination with the main frame of the machine, of anauxiliary frame separate from said main frame and detachably fixed therein, a series of jointed type bars, a series of key actuated devices therefor, a series of separate key levers for said key actuated devices, said type bars and key' actuated devices and key. levers being carried by the auxiliary frame so that the jointed type bars, the key actuated devices and key levers may be mounted in or removed from the main frame with said, auxiliary frame.

60. In a front'strike typewriting machine,

the combination with the main frame of the machine, of an auxiliary frame separate from the main frame and detachable therefrom, a series of type bars, a'series of guide links for said type bars, a series of drivers, and a series. of keys for actuatin said drivers, said type bars, guide links, drivers and keys being carried by and adapted to be mounted in and removed from the main frame with said auxiliary frame.

61. In a typewriting machine, the combination with the frame of the machine, of a type bar segment separate from the frame of the machine, a series of separate hangers secured to said se ment, a series of type bars pivoted to said angers, a second se ent separate fromthe frame of the machine, a second series of separate hangers secured to said second segment, a series ofsublevers pivoted to said second series of hangers and operatively connected to said type bar's, means independent of the machine frame for connecting said segments, and means for detachably fixing the segments to the machine frame.

62. In a typewriting machine, the combination with the main frame of the machine, of a detachable segment, a series, of guide links carried by said segment, a series of type bars pivoted to said links, a series of drivers for said type bars, a second detachable segment for said drivers, and means independent of the main frame of the machine for connecting said segments, whereby the type bars, guide links and drivers may be mounted in or removed from the main frame with said se nents.

63. In a typewritlng machine, the combination with the main frame of the machine, of a detachable segment, a series of guide links carried by said segment, a series of type bars pivoted to said links, a series of drivers for said type bars, a second detachable segment for said drivers, a series of key operated type bar actuating devices, a third detachable segment on which said type bar actuating devices are mounted, and means independent of the main frame of the machine for uniting .said segments,

whereby the type bar, guide links, drivers and type 'bar actuating devices may be mounted in or removed from the main frame of the machine with said segments.

6%. In a typewritin machine, the combination with the main ame of the machine, of an auxiliary frame that is detachable from said main frame, a series of type bars a series of guide links therefor, a series 0 drivers for the type bars, and a series of type bar actuating devices operatively connected to said drivers, said type bars, guide links, drivers and type bar actuatin devices beg carried by and removab c with said auxiliary frame.

65. In a typewriting machine, the combination with the main frame of the machine, of an auxiliary frame that is detachable key levers and connecting links being car-- from said main frame, a series of type bars,

a series of guide links therefor, a series of drivers for the type bars, and a series of key levers operatively connected to said drivers, said type bars, guide links, drivers and key levers being carried by and removable with said auxiliary frame.

66. In a typewriting machine, the combination with the main frame of the machine, of an auxiliary frame that is detachable from said main frame, a series of type bars, a series of guide links therefor, a series of drivers for the type bars, a series of type bar actuating bell cranks, and a series of key levers operatively connected to said bell cranks, said type bars, guide links drivers, bell cranks and key levers being carried by and removable with said auxiliary frame.

67. In a typewriting machine, the com-,

bination with the main frame of the machine, of an auxiliary frame that is detachable from said main frame, a series of type bars, a series of guide links therefor, a series 'of drivers for the type bars, a series of hell cranks, a series of connecting links between said bell cranks and drivers, a series of key levers, and a series of connecting links between said key levers and bell cranks, the type bars, guide links, drivers,,bell cranks,

ried by and detachable from the main frame of the machine with said auxiliary frame.

68. In a typewriting machine, the-combination with the main frame of the machine, of an auxiliary frame fixed in and detachable fromthe main frame, a system of printing position.

type actions carried by said auxiliary frame, and an inking pad a 'ainst which thetypes normally bear and which is also carried by the auxiliary frameand may be placed in or removed from the main frame with said auxiliary frame and type actions.

(59.In a typewriting machine, the combination with the main frame of the machine, of an auxiliary frame detachable from the main frame, a system of type bars, a system of key operated type bar actuating devices, and an inking pad against which the types normally rest, saidtype bars, actuating'devices and inking pad being carried by said detachable auxiliary frame and adapted to be placed in and'removed from the main frame with said auxiliary frame,

70 In a typewriting machine, the corn bination of a type bar, a driver pivoted thereto, the driver contacting with the type bar at the last portion of the printing stroke and the two parts moving .together as one part, the construction and arran ement of the parts being such that one o the -contacting portions on the driver and type bar is adapted to be filed away and thereby efiect an adjustment of the type relatively to the printing point when the parts are in Signed at the borough of Manhattan, city of New York, in the county of New York, and State of New York, this 12th day of May, AKD. 1905.

, ARTHUR V]. SMITH,

Witnesses:

E. M. 'WnLLs, J. B. Dnnvss.