US984744A - Type-writing machine. - Google Patents

Description

A. T. BROWN. TYPE WRITING MAGHINE. APPLIOATION IILED JULY 25, 1906 Patented Feb. 21,1911.

4 SHEETS-SHEET L ATTORNEY WITNESSES A. T. BROWN. TYPE WRITING MACHINE. APPLICATION IILEI) JULY 25, 1906.

Patented Feb. 21, 1911.

4 SHEETS-SHEET 2.

lll

m z///////V//////////// I-NVENTOR Illa-l WITNESSES \AWJ Ai ATTORNEY A. T. BROWN. TYPE WRITING MACHINE. APPLICATION FILED JULY 25, 1906.

Patented Feb. 21, 1911.

4 SHEETS-SHEET 3.

(D Ll:

WITNESSES mvmfiof WM ATTORNEY A. T. BROWN.

' TYPE WRITING MACHINE. APPLIOATION FILED JULY 25, 1906.

Patented Feb. 21, 1911.

4 BHEETSSHEET E mom INVENTOR 7. m/ I %Z%%ZW% ATTORNEY ALEXANDER T. nnowivfor SYRACUSE, NEW YORK.

TYPE-WRITING MACHINE.

Specification of Letters Patent.

Patented Feb. 21, 1911.

Application filed July 25, 1906. Serial No. 327,706.

new and usefullmprovements in Type-Writing Machines, of which the following is a specification.

My invention relates to typewriting machines and more particularly to the type actions of such machines, although the invention is also directed to other features of the machine.

The main objects of my invention are to provide a type action that has a light-touch; that affords a uniform leverage, a uniform extent of (lip of the keys and a uniform touchthroughout the system; that avoids side strain on the actions-at the sides of the machine; that affords but slight resistance to the key depression at the initial portion of the key stroke and effects a gradual acceleration of the type bar in its movement to the printing position and that provides a construction in which various portions of the type actions may be assembled outside of the-machine and introduced in an assembled state into the machine.

To the above and other ends'which will hereinafter appear, my invention consists of the features of construction, arrangements of parts and combinations of devices to be set forth in the following specification and to be particularly pointed out in the accompanying claims.

In the drawings, wherein like reference characters indicate correspondil'ig parts in the various views, Figure 1 is a vertical, central, front to rear sectional view of one form of typewriting machine showing my invention applied thereto, parts of the machine beingomitted. Fig. 2 is an enlarged detail. fragmentary perspective view of a portion of one of the type actions. Fig. 3 is a diagrammatic side elevation of one of the type actions and a portion of the escapement mechanism. Fig. 4 is a detail front elevation of one of the sub-levers at the righthand side of the machine. Fig. 5 is a rear elevation of the machine with parts broken away and parts omitted. Fig. 6 is a vertical front to rear sectional view taken cen-- trally through the machine and showing the case shifting mechanism and partof one of the type actions. i

The frame of the machine comprises side 7 plates 1, a rear cross plate 2, a front cross bar 3, corner posts 4 and a top plate Inwardly extending lugs 6 on the side plates 1 constitute supports for \a supporting plate 7 which is detachably'secured to said lugs by screws 8. The supporting plate 7 is apertured at 9 (Fig. 6) at different points throughout the width and length thereof for the reception pf hanger stems 10 threaded at their upper ends for cooperation with nuts 11. Depending from the stems 10 are bifurcated hanger portions 12 in which key levers 13 are received and pivoted thereto at 14, 14, 14, 14. The key level-s13 are provided with finger keys 15, 15 15, 15 arranged in four banks fore and aft of the machine. The key levers are levers of the first order and have rearwardly extending, substantially horizontally disposed arms 13 which terminate at their rear ends in a single transverse/plane and forwardly extending arms 13 which carry the keys.- From an inspection of Fig. 1- it will be seen that the key levers throughout the system are of four different lengths and are pivoted to their hangers at different points fore and aft of the machine in four transverse planes, the shortest key levers having the finger keys 15 being pivoted at 14, the key levers having the finger keys 15 being pivoted at 14, the key levers having the finger keys 15 being pivoted at 14? and the key levers having the keys 15 bei 1g pivoted at 1 1. By this construction the lever arms 13 and 13 of each key lever bears a uniform ratio to each other, notwithstanding the fact that the keys are arranged in four banks and that the rear ends of the key lovers terminate in a single transverse plane. The purpose of this construction is to assist in providing a uniform extent of dip of the various keys and a uniform leverage throughout the system and also to effecta uniform extent of movement of the universal bar by the differentkey levers, all as will hereinafter more clearly appear. Each key lever has a depending arm 16 which has a hook like member 17 at the lower end thereof with which one end of a contractile spring 18 engages, the other end of said spring being connected to a rod 19 which extends transversely beneath the various key levers and is secured at its ends to the side plates 1 of the machine. The rearwardly' extending horizontally disposed arm 13 of each key lever is pivoted at 20 to alink designated as whole by the reference numeral 21, the opposite end of'said link being pivoted at 22 to the lower end of an upright sub-lever 23' pivoted at 24 to' a hanger 25, the sub-lever'extending substantiallyat right angles tothe link. The upper end of each sub-lever is pivotally con-' nected at 26 toa pull link 27 that extends forwardly and is connected at 28-to a type bar 29 having a rearwardly extendin arm 30 that-coeperat'es with a-type barguide 31 formed as a part of a hanger 32'to which the associated type'bar is pivoted at 33. The

' various type bar hangers are secured to the rear face of a type bar segment 34 by headed screws 35. c v

The type bar constructionv is similar to that disclosed in the patent granted to me on .the 19th day of September, 1905 which bears No. 7 99j627. The forward ends'of the type bars normally rest-on a pad 36 supported by a segmental'strip 37 connected to arms 38 I which'project forwardly from the type bar segment. The type'bars are segmentally 31*.

I ranged on the type bar segment 34 and are adapted to strike upwardly and rearwardly against the front face ofthe platen diagrammatically shown at 39, Pivotally connected to the type bar segment at each side thereof and near the upperportion of the segment as at 40 is a forwardly projecting link; 41 piv-- oted at its rear end 42 to a lug 43 which projects inwardly from each of the rear corner posts 4 of the frame. The links 41 consti tute parallel links by which the upper portion of the segment is guidedin its case shifting movement. The lower portion ofv the segmenthas-outwardly projecting arms 44 (see Fig. 5) to which are pivotally connec'ted the forward ends of arms 45 that project forwardly from a tubular member 46 which is in the nature of a rock-shaft andis H provided with bearings 47 in the ends thereof for coeperation with anti-friction balls 48. 'Coned ends 49 of bearing screws 50 cooperate with the anti-friction balls to supportthe member 46 and the parts connected theretoon the frame of the machine. The

bearing screws 50 are received in threaded openings in brackets 51 'which pr'oject in- .wardly from the base of the machine; the

screws being held against accidental displacement by lock nuts 52. A. rearwardly extending crank arm" 53 projects from the member46 and its rear end is connected to v 1 one end of .a coiled contractile spring 54 which passes at its lower end through an opening in a lug 55' that projects inwardly from a side platev lrof the machine. The lower end of the spring is suitably connected to a: thumb nut 56 by which an adjustment 'of the tension ofthespri-ng 54 may be eifected. The spring 54 is regulated partially to counterbalancethe weight, of the type bar segment. The arms 45' of the tubular member 46 andthe rearwardly extending. arm 53 constitute a rigid frame by whichthe type bar segment and the parts connected thereto may receive the case shifting movements. The arms 45 extend parallel with the links 41 and constitute parallel links on which the segment can be shifted. One ofthe armsr45 is'pivotally. connected at 57 to a depending link 58 which is pivoted at its lower end '59 to the rear end of a shift key lever 60 piv oted at 61 to'a stud 61 that projects inwardly from aside plate 1 of the frame.

' The forward end of the key-lever 60 is provided with a key 62 so that a depression of the finger key 62 will elevate the rear end of the lever, thereby causing the type bar segment to be elevated to wr1te upper case char-. acters; Ifdesired eachof the arms 45 may I be connected. with a shift key 62, said keys being situated at oppositeside's of the machine and either of them being operative 'to change the case position of the segment. A

bracket 63 is secured by screws 64 to thesupporting plate 7 *at about the center of the has a threaded opening therein for the remachine. A rearwardly extending arm'65 1 ception of a screw 66 that extends through said arm and at its lower end forms a stop or abutment. A look nut 67 is threaded on the screw to prevent accidental displacement "of the stop. Below the arm 65 is another arm-68 which projectsrearwardly from the bracket and has a threadedopening through which a screw stop.69 extends, the screw 00- operating with 'a lock nut 70 which holds it in its adjustedposition. Extending forwardly from the segment is a member'71 which extends into an opening between the two bracket arms 65 and 68 and coeperates with the screw stops 66 and 69 to limit the shifting movements of the segment, the segment being normally supported by the'stop '69.; .It' will beunderstood that the spring 54 acts as a counterbalancing spring to counteract the weight of the type bar seg ment and the parts carried thereby so that but little pressure is required on the shift key62 to shift the segment to the upper case frame. The links 21 whichconnect the key levers with the sub-levers are preferably formed as indicated in Fig.2 of two parallel side plates 75" and 76,- pivotally united intermediate their ends as at 77 so that one of the members is adapted to turn relatively i all of the key levers.

to the other as shown in dotted lines in- Fig. 2. One of the side plates 75 is a rigid memberwhich carries laterally projecting pivot pins 78, 79 at the ends thereof, whereas the other plate 76 is slightly resilient and is preferably provided with openings 80 that are adapted to register with thepivot pins from said members when desired.

Extending above the key levers at the rear ends thereof is a universal bar 81 with which the key levers cooperate. The contact face of the universal bar is normally'in contact with all of said key levers and makes contact therewith in the same transverse plane 7 so that it bears the same relation to all of the key levers, and a uniform extent of movement is transmitted to the universal bar by are secured to the universalbar' and are piv- .otally connected at their lower ends 83 to rearwardly extending crank arms 84 of a rock shaft that turns on bearing screws 85 threaded through openings in the side plates of the frame. In order to guide the universal bar in its up and down motion,

.the links 82 pass loosely through suitable openings in brackets 82 (Fig, 5) which project inward from the side plates 1. A rearwardly projecting crank arm 86 is also connected to said rock shaft and is pivotal-1y connected. at its rear end to an upwardly extendinglin-k 87 connected at 88 to a horizontally disposed lever 89 situated directly beneath the top plate 5 of the machine and pivoted at 90 to a depending lug 91 formed on the top plate. This horizontally disposed I lever extends fore and aft of the machine and is provided with a depending arm 92 to which one end of a contractile spring 93v isconnected, the other end of said spring being connected to a screw 94. which passes freely through an opening in a bracket 95 secured to the top plate at 96. A thumb nut 97 coiiperates with the screwto effect an adjustment of the tension of the spring 93. The forward end of the lever 89 is connected directly to a ribbon vibrator 98, whereasthe rear end of the lever has feed dogs 99 formed integral therewith, and cooperating with the escapement wheel-100. The escapementwheel is secured by ascrew 101 to a vertically disposed shaft 102 received in an upright bearing 103 formed on the top plate of the machine and extending above it as shown in F ig.3. A collar 104 is secured to the-she ft by a pin 105 so that the collar and.

the hub of the escapement wheel bear against opposite ends of the bearing 103 and prevent support the pinion in place.

Depending links 82 parts controlled thereby.

a longitudinal movement of the'shaft 1.02 in its bearing.

A feed pinion 106 has a hub or extension 107 which bears on the collar 104 to properly The pinion is v loosely mounted on the cylindrical portion of the shaft 102 and has a clutch member 108 formed on the upper end thereof. A cooperating clutch member 109 is located above the clutch member 108 and is in the nature of a sleeve with a, rectangular opening which cooperates with a rectangular portion 110 on the shaft 102 to cause the clutch member 109 to rotate with the shaft but to afford .a movement of the clutch member axially thereof. A peripheral flange 111 is formed on the clutch member 109 for cooperation with a forwardly projecting flange 112 on a bar or bail 113 that extends throughout the length 1 of the carriage and is provided at its ends with forwardly projecting arms 114: pivoted at 115 to end plates 110 of the carriage. One or both of the arms 114 may be extended forwardly beyond their pivots to form arms 117 that carry release keys 118 at the forward ends thereof. Eachof the arms 117 is preferably slotted at 119 for cotiperation with a pin 120'which projects outwardly from an end plate 116 of'the carriage and intot'he slot 119 of the associated lever to limit the movement of the release levers 117 and. the The carriage which supports the platen 39 comprises the end plates 116 heretofore referred to and members 121, 122 provided with oppositely disposed grooved tracks 123 for cooperation with anti-friction balls 124: which are likewise received in oppositely disposed grooved tracks 125 in an inclined plate 126 secured by screws 127 to uprights or lugs 128 on the top plate of the machine. A paper table 129 is secured to the members 121 and 122. The depending flangedike portion 130 on the member 122 has fixed on its rear face a feed rack 131 which meshes with the feed pinion 106. The usual spring drum not shown) is connected to the carriage to etfect a forward step-by-ste feed thereof, when the finger keys are depressei it being understood that each actuation of a finger keywill effect an elevation of the forward end of the lever 89 to operate the escapement and to elevate the ribbon vibrator 98 to interpose the ribbon in the path of the. approacliing type bar.

A finger key or space bar 132 is connected at its ends to two levers 133 situated on op-,

posite sides of the machine, said levers being somewhat similar to the key levers 13.

One of the levers 133 has at its rear end a downwardly extending portion 133 and is provided at the lower end of the down Wardly extending portion with an outwardly bent hook-like member 134 which extends beneath one of the crank arms 84. Each of the key levers 133 is mounted in one of the.

hangers; 12 carried by the supporting plate 7. A depression of, the key'132' therefore is effective to elevate the arm 84 to which it is operatively connected, thus-rocking the 5 shaft 85 and causing the forward end of the lever 89 to be elevated to effect a downward movement of the feed dogs.- When pressure on the finger key 132 isreleased the parts will be restored to their normal position,- thus aflording a letter space movement of thecarriage. During the 'operationof the machine in the usual manner the feed dogs will be vibrated to afford a releaseof the escapeme nt wheel and the. pressure exerted on the carriage by, the carriage spring will cause the pinion. 106 to be "rotated and the two-clutchmembers 108, 109 being in engagement at this time a letter space rotation of the escapemcnt wheel is effected. Should the operator desire to releasejthe carriage from the escapement mechanism itis merely necessaryxto depress either. of the release keys 118 which will effect an upward move-:

ment of the clutch member 109' axi'allyof the shaft 102 by the direct engagement of the. :bail under the circumferential flange 111. The clutch members being thus re'-' leased the carriage may be movedin either .direction and the feed pinion will turn freely on its shaft;

, The carriage construction 'hereinbefo're described is somewhat similar to that dis-' closed and claimed .in my a-pplications, Se

.. rial-Nos. 305,053 and 214,625, dated respec- :tively March 9th, 1906 and June 29th, 1904.

From an inspection of Figs. 1 and 5 it will be-seen that the vertically disposed'parallel hangers 25 are all alike'in construction and are arranged in an are or at gradually higher elevations from the center to the sides of the system. Each of the hangers in question comprises a bifurcated portion in which the sub-lever is pivoted and each hanger is secured to the front face of a'plate 135 by a screw 136. It'will be observed that each headed screw passes "from the 1 rear thioughthe plate 135 and is received at its threaded end in athreaded opening in the base or attaching portion of the hangerjand that this threaded opening in the hanger is 'olf-set vertically with reference to the pivot 24, or is ofi-set to one side of the center of the hanger, considering the center as pass- -i ng at right angles from the base-of the 55 hanger forwardly through the pivot 24, thus bringing the screw hole on one side of or eccentric to the-center line of the hanger.

This screw hole'is thus formed longitudina'lly of the hanger, and the fastening screw I engages 'thefhangerin the direction of its length so that one end, the base end only, of the hanger is caused. tobear against the support provided-for the hanger, This support or base plate 135 is provided with two concentric rows ofscrew holes for the admission of the screws 136, and the holes of one row arexarranged to alternate with those of the other row, as seen more clearly in Fig, '5, The threaded holes in the hangers arelikewise' arranged to form two concentric rows and-to alternate to correspond with I the alternation of the holes in the support or base plate, thus providing for a close arrangementof hangers in a single row with two rows-of staggered or alternating fastening screws, The construction of each hanger is such that it may be reversed and either sidethereof be placed uppermost, which enables the securing screws to bearranged in staggered relation as shown in Fig. 5 while the pivots 24 are arranged in a smooth curve. .The hangers are allalike, and the staggering of the screws shown in Fig. 5 is pro 'duced bysetting every other hanger. with its threaded opening above thepivots 24;,the

alternate .hangers beingnreversed and set .with their threaded :openings below the' pivots. As shown in the present case,- allof the hangers 25 are set so that theslots in which the sub-lev'ers play are subst'an- 96 tially. vertical. Theplate 135 to which the hangers are secured is held in position by screws 137 which extend through the rear cross plate 2 and the threaded ends .thereof are received in openings in the plate 135.

By this arrangement, and by reason of the detachable feature of the supporting plate 7, the various key levers, theirconnecting links 21, and sub-levers 23 may be assembled and connected outside of the machine and-10o 1ntroduced as a-umt'intothe machine, the

parts being readily connected and support.

ed in place by the screws -8 and 137. It will also be seen that the construction is' such that parts of each type action, or any type action as a whole, may be removed from the machine without disturbing the other type actions, or the entire systemflof key levers or the entire system ofsub-levers may be readily removed as a unit without dismounting any of the other parts of the machine; the disconnectible links 21 facilitating the removal of either the system of sub-levers or'thesystem of key levers when desired. 1

From an inspection of Fig. 5 it will be 1 observed that the sub-levers 23"have' their upper ends arranged in an are which is substantially co-extensive with the arc in which thetype bars are mounted and that in the' actuation of each type action a direct 12 fore and aft pull is eflected onthe link 27 to move'the type bar to printing position. The lower ends of the sub-levers are arrangedin a single horizontal plane so as to properly connect with the links 21 which 125. constitute"tog le links as will hereinafter appear. It Wlll also be seen from an inspe'ction of Fig; 5 that both sets of arms and that the sub-levers at the sides of the machine are situated in inclined planes extending inwardly and upwardly from the links 2l to the draw links 27 to which they are connected. One of these sub-levers at the side of the machine is'shown in detail in Fig. 4 from which it will be seen that the points of.conneetion of the sub-lever with its link 21 and draw link 27 is in the same inclined plane as the pivotal point of said lever.. In other words, the pivotal connections 2:2, 24: and 26 are in the same inclined plane so that lateral strain is avoided. It will also be understood that the converging sub-levers at the sides of the system compensate for the difference in width between the system of type bars and the system of links 21. the latter system being co-extensive in width with the system of key levers. By arranging the sublevers in the manner describedwith the pivots thereof. arranged at progressively higher elevations as the sides of the system are a roached and by raduallv increasin the length of both sets of lever arms of'the sub-levers as shown I ain enabled not onlv to arrange the upperend of the sub-levers are situated and to afford a direct fore and aft pull on the type bars, as hcreinbefore described, but I am also enabled to provide a uniform leverage of the sub-levers through out the system. With an'cqualization of the leverage ofthe key lever system and the sub-lever system a uniform leverage through the entire system of typeactions is afforded as well as a uniform touch on the various {ceys and a uniform extent of dip of the (QVS.

will beseen that the rear arm 13 of each key lever and the link 21 which is pivoted thereto are both horizontally disposed in the normal position thereof and are arranged end to end in alinement to form a toggle whlch is normally in the dead center poslt-lon so as to form what may be termed a reverse toggle-thateffects a gradual acceleration of the type bar in its movement to the printing position, the toggle being, broken by the depression of its key from the ;fu1l to the dotted line position shown 'in-Fig. 3." The effect of breaking j the togglein the manner described is to pull the lower end of thef assoeiated sub-lever forward-thereby effecting 'a backward pull on the associated link 27 to move the type bar from the full to the dotted line position showri in Fig. 3. This same depression ofa 'fingerkey is efl'ectii e to elevate the universal bar as heretofore described, there-- by rocking the shaft- 85 to effect anupward movement of the forward end of the lever 85) which isefiective to elevate the vibratorand interpose the ribbon in the path of the approaching type bar. The same movement lowers therearend of the lever, thereby actuating the feed dogs and aflording a letter space movement of the carriage.

Thecarriage and ribbon vibrating mechanism shown and described is not claimed herein but const1tutes.the subject-matter of patent, dated July 26,

tally disposed key levers, a series of .sub-

stantially horizontally. disposed links pivoted to said key levers at the rear ends thereof and arranged to extend longitudinally ofsaid key leversand toward the back of the machine, a series of sub-levers pivoted to said links, and a series of type bars actuated by said sub-levers.

2. In a typewriting machine, the combination of a series of substantially horizontally disposed key levers of the first order, a series of substantially horizontally disposed links pivoted to said key levers and extending longitudinally thereof,a series of sub-levers of the first order pivoted to said links, and av series of type bars actuated by said sub-levers.

3. In a front-strike t-ypewriting machine, the combination of a series of key levers having rearwardly extending substantially horizontally disposed arms,'a series of substantially horizontally disposed links pivoted to said arms, a series of upright sub-levers v pivoted to said links, and a series of up: From an inspection of Figs. 1 and 3 it wardly and rearwardly striking type bars actuated by said sub-levers. I 4. In a typewriting machine, the combination of a series of key levers of the first order. said key levers having rearwardly extending horizontally disposed arms, substa ntially horizontally disposed links pivoted to said arms, sub-levers that extend substantially at right. angles to said links, and type bars actuated by said sub-levers.

5. In a typewriti'ng machine, the combination of a series'ofkey levers havingcrearwardly' extending substantially horizontally disposed arms, each of said arms formin one element of a toggle; a substantially-homzontally disposed linkpivoted to'each of said rearwardly extending arms of said key levers and forming the other element of thetog gle; a series of upright sub-leversof the first order, one pivoted to each of said links; and

a series of type bars connected with the up arnis that extend rearwardly'beyond the pivots thereof, each of said arms forming one element of a toggle; a'link pivoted to each of said rearwardly extending arms and extendinglongitudinally in substantial alinement therewith in the normal positions of the parts and: forming the other element of the-toggle; a series of upright snb-leversof the first .order, one pivoted'at its lower end vposed arm that forms one element of a reverse toggle, a horizontally disposed link pivoted to the rearwardly extending arm of -nected to said links, and a series of upwardly said key lever and forming the other element otsaid reverse toggle, an upright sub-lever of the first order pivoted-above the link and connected :at its lower end thereto, and an upwardly and rearwardly swinging'type bar operatively connected to said sub-lever.

. 8. In a front-strike 't'ypewriting' machine, the combination of a key .lever of the first order having a rearwardly extending horizontally disposed arm that forms one'element of a reverse toggle, a'horizontall'y disposed link pivoted to the rearwardly extend-.

"ing arm of said key lever and forming the other element of said reverse toggle, an upright sub-lever of the. first order pivoted above the link and connected at its lower end thereto, an upwardly and rearwardly swinging typebar, and a connecting link that extends forwardly from said sub-lever to said type bar, whereby a gradual acceleration of ,the' type bar isefi'ected as it approaches the printing position,

,9. In a typevvriting machine, the combination of a' series of horizontally disposed key levers oft-he first order pivoted'at differentpoints fore and aft of the machine,-a' series of links connected to said key levers and ex tending longitudinally thereof, a serles of sub-levers connected to said links, and a series of type bars operatively connectedto said sub-levers. a

10. In a front-strike typewrit'ing machine, the combination of a seriesofhorizontally disposed key levers of the first-order pivoted at different points fore and aft of the machine, a series otlinks connected to said key levers, a series of upright -sub-levers conand rearwardly striking type bars opera; tlvely connected to said sub-levers. 11. In a typewriting machine. the combi-.

' nation of a series of horizontally. disposed key lovers of the first order pivoted at different points fore and aft of the machine; a I

', series of links connected to said key levers and arranged longitudinally of the key lever arms to which they are connected, saidllinks and th'e arms of'the key levers to which they are connected forming reverse toggles; a series 0t sub-levers connected to said links;

and a series-of type bars operatively con nected to said sub-levers. I

12. In a front-strike;typewritmg machine,

the combination of a series of horizontally.

disposed key levers of the first order pivoted at different points fore and aft of the machine; a series of links connected to said kev levers and arranged longitudinally of the key lever arms to which theyare connected, said links and the'arms of the key levers to "which they are connected forming reverse toggles; a series of upright sub-levers connected to said links; and a series of upwardly and rearwardly striking type bars opera tively connected to said sub-levers.

13. In a typewriting machine, the combination'of a series of key levers, a series of toggle links connected 'to said key levers, a series of sub-levers connected to said toggle links and pivoted at progressivelyhigher elevations as the sides of the systernot" sublevers areapproached, and a series of type bars operatively connected to saidsnb-levers'.

14; In a-typewriting machine, the combination of a series of keylevers-of the first order pivoted at different points fore and aft of the machine, a series 'oftoggle links connected to said key levers, a series of sub levers connected to said toggle links, the 'pivots of said sub-levers being arranged in an connected to said sob-levers. v

arc,"and a series of type bars operatively' '15. In a front-strike typewriting machine,

the combination. of a series ofkeylevers,

series of toggle links connected to's'aid'key, levers, a series of upright sub-levers connect ed to said toggle links and pivoted at progressively higher elevations as' the sides of the system 'of-snb-levers are approached,

and a series of upwardly and rearwardlysaid Sllb-IQVlS. C 1 1C). Ina typewr ting ma'clnne, the combination of a serlesof key levers-a serlesfof striking type bars operatively connected links connected to said key levers and a r-- ranged, longitudinally of the'key lever arms to Which they 'areconnected, said links. and the-arms of-the key levers to which they are connected forming reverse toggles, a series of sub-leversconnected to said links, the.

.piv'ots'of said Sttb-lGVQIS being arranged in an arc. and a series of type bars operatively ';-connected to said sub-levers. 17,111 a 'typewriting machine, the coIi1hi-.;

nation of a series of key levers of the first orderpivoted at different points fore and aft of the-machine, a series of links connected; to said key levers and arranged longitndinally of the key lever arms to'ivhich they are connected, said'links and the arms of the key levers to which they are connected forming reverse toggles, a series'of sub-levers connected to said links, the pivots of said sublevers being arranged in an arc, and a series of type bars operatively connected to said sub-levers.

18. In a front-strike typewriting machine, the combination of a series of segmentally arranged upwardly and rearwardly striking type bars, a series of upright sub-levers pivoted in the rear of the type bars at. progressively greater heights-as the sides of the system are approached, the upper ends of said sub-levers being arranged in an are that corresponds substantially to the arc in which the type bars are situated and being connected with said type bars, links connected to said sub-levers, and key levers connected with said links, each link and an arm of the associated key lever forming a toggle.

19. In a front-strike typewriting machine, the combination of a series of segmentally arranged upwardly and rearwardly striking type bars; a series of upright sub-levers of the first class pivoted in the rear of the type bars at progressively greater heights as the sides of the system are approached, the upper ends of said sub-levers being arranged in an are that corresponds substantially to the arc in which the type bars are situated; links that extend forwardly from the upper ends of said sub-levers to the type bars; substantially horizontally disposed toggle links connected to said sub-levers at the lower ends thereof; and key levers having substantially horizontally disposed arms connected with said toggle links, each toggle link and an arm ofthe associated key lever forming a toggle.

20. In a typewriting machine, the combination of a series of' type bars, a series of sub-levers of the first class, both'sets of arms of the sub-levers extending greater distances from their pivots as the sides of the system of sub-levers are approached, one set of said arms terminating in a straight line across the machine, and key actuated toggles connected to said sub-levers.

21, In a front-strike typewriting machine, the combinationof a series of segmentally arranged upwardly and rearwardly striking type bars, a series of upright sub-levers of the first class, both sets of arms of the sublevers extending greater distances from their pivots as the sides of the system of sub-levers are approached, one set of said arms terminating in a straight line across the machine,-

and key actuated toggles connected to said sub-levers.

22. In a typewritingmachine, the combi-' from their pivots as the sides of the system of sub-levers are approached, means forconnecting one set of arms of said sub-levers with the type bars, toggle links connected with the other set of arms of said sub-levers, and key levers of the first order connected with said toggle links and alined therewith.

23. In a'typewriting machine, the combination of a series of type bars, a series of upright sub-levers of the first class, bot. set of arms of the sub-levers extending greater distances from their pivots as the sides of. the system of snb-levers are approached, means for connecting one set of arms of said sub-levers with the type bars, links connected with the other set of arms of said snb-levcrs, and key levers of the first order connected with said links, one arm of each key lever and the associated link connected thereto forming a reverse toggle that ati'ords an accelerated movement of the..type bar as it approaches the printing position.

24. In a front-strike typcwriting machine, the combination of a. series of up\ 'ardly and rearwardly striking type bars, a series of upright sub-levers of the first class, both. sets of arms of the sub-levers extending greater zontally disposed toggle links connected with the other set of arms of said sub-levers, and key levers of the first order having substantially horizontally disposed arms connected with said toggle links.

In a front-strike typewriting 'machine, the combination of a series of upwardly and rearwardly striking type bars; a series of upright sub-levers of the first class, both-sets of arms of the sub-levers extending greater distances from their pivots as the sides of the system of sub-levers are approached; means for connecting one set. of arms of said sub-levers with the type bars; substantially horizontally disposed links connected with the other set of arms of said sub-levers: and key levers of the first order, said key levers having rearwardly directed substantially horizontally disposed arms connected 'with said links, the rearwardly directed arm oteach key lever and the associated link connected thereto forming a reverse toggle that affords an accelerated movement of the-type bar as it approaches the printing position.

26. In a typewriting machine, the combination of a ser es of type bars; a series of sub-levers of the first class p1voted=1n an are and connected with said type bars, both pivotedat differ11tpoints fore and-aft-of said sub-leversz and key levers connected to said toggle links, sa d key levers bemg f the machine.- I

at't'of the machine, both sets of arms of said as horizontally disposed links connected to "posed 1 arms which are connected tosaid sub-levers, and a seriesot' keys for breaking the machine.

vbination of a series of type bars a series of sub-levers of the first class connected there-' wit-h, -b0th'=setsof arms of :saidysub-levers seriesv of jtoggles connected with said sub mentally arranged upwardly and rear- .said sub-levers at the lower ends'thereof;

zontally disposed arms connected to said bination of a series oftype bars; aseries' of "manta-11v. arranged upwardly and reartheir pivots as the sides of the system of different points fore, and aft'of the machine bin'at-ion of a series'of type bars, a series of sub-levers of the first class connectdthere with, a series of toggles connected with said said to'ggles' the carriersfor keys being pivoted at-difierentpoints f01'e. 1d aft of 28". In a" typewriting machine,'the "com-- increasing in length from the center to the sides of the-'system'of'said subd'evers; a

levers; and a series of keys for breaking said toggles,.the carriers for saidkeys' belng the inachineto provide a substantially uniform leverage throughout the system.

29. In a' front-strike typewriting niachine, the combination of af'series of seg-' wardly striking type bars; a series of uprigl'it. sub-leversof thefirst class pivoted. in an arc and having their upper ends 6011-, nected with said type bars, both sets of arms of said sub-levers extendingfarther; from their pivots as thesides of the system of sub-levers are approached; substantially horizontally disposed links connected to and key levers of the first order havingrearwardly "extending substantially horilinksi 2 p =30. In a,-.typewr'itmg machine, the comsub-levers ofthe first class connected therewith, botlrsets of arms of said sub-levers extending-greater distances from their pivots as the sides of the system of sub-levers are approached; toggle links connected to pivoted at different pointsfore and aft of 31. In I front-strike typeivriting in a-. chine, the combination of a series of segivardly striking type bars: a series of-upright sub-levers of the first class-connected therewith and adapted to vibrate fore and the type bars as they approach-the printing p ti naJ Y clined to. compensate for the difference in wardly andu-earwardly striking type bars Qtherear of the type bars and interposed be tween said toggles and type bars and'the .upperends of which are-arranged in an arc substantially,co-extensive with. the arc in levers. at the sides of the system being in- 32. In a v:lront-strike typewriting machine, the combination of a series of up Wardly and rearwardly striking type bars arrangedin an'arc; a series of substantially horizontally disposed key actuated toggles greater in Width than the series of; type bars; and a series of upright sub-levers between said toggles and type bars, the sublevers at the sides of the system being in- Width between the system of toggles and the systeniof'type' bars. V l

In a front-strike typevvriting n'ia-' chine, the combination of a series of up arranged in an are; a series of substantially horizontally dis-posed key actuated toggles greater in width than'the series of type bars; and. a series of .upright sub-levers in which the typebars are arranged, the subclined to compensate for-the difi erence inv width between-the system of toggles andthe system of type-bars. I r In a typevvrit-ing machine, the combination of a system ofkey levers; asupport or-f 'ame oirwhich all of the system of said key levers are mounted, said support .or frame being so connected to the' frame of the machine as to'be detachable therefronrwithout first di'smount-ing' any of the other parts 1 0f the machine; and'a series of disconnecti ble devices which det-achably connect the key levers to the other parts ,of the type actions.'

I y In a typew'riting machine, the combi- 105 nation of a system of type-bar's, and means for actuating said type bars including a system of keyactuated toggles-and also; including" detachable means connecting the toggles withjthe type bars, said system of 110 toggles being detachable from the'machine r as a unit.

3('3, In a typeWrit-ing machine, the conibi-' nation of-a system of toggles, each comprising a key lever anda link; and, type bars 115 operatively connecte to said vlinks, each link having meansfor eif'e'cting. a disconnect1on between the lHIkS and type bars topernnt the removal of'the system of toggles from the machine as a unit. 3 7'; In a. typewriting machlne, the comb1- natlon-of a series of type bars,a=ser1es of substantially horizontally disposed key levers of the first class, aseries of sub'stam 'tially horizontally disp'osedlinks connected 125 tosaid key levers. .at the rear ends thereof and forming. with said.- key levers toggles by Whichthe type barsare actuated, each.

link having-means for disconnecting said links from. operative connection with the 3 typebars to permit the removal of said key I levers and links as a unit the contact face of. which bears the same reand . of securing lation to all of said single transverse plane.

39. In a typewriting machine, the combination of a support detachably secured to the framingof the machine, a series of de-,

pending in vidual hangers each detachably secured to said support and situated at different points foreand aft of the machine, a series of key. levers pivoted to and supported by said hangers, each key lever being pivoted on' an individual hanger.

40, In a typewriting machine, a series of hangers carrying pivoted devices and having each a longltudinally formed threaded hole eccentric of the center of the hanger whereby said hanger may be reversed vto change the ofsaid hangers. 41; In a typewriting machine, the combination of a'base plate having two'rows. of alternating holes, a single row of hangers each having a threaded hole arrangedeccentrio of the center of said hanger, a series of levers pivoted in said hangers, and two rows screws, the hangers being reversible so that the threaded holes therein may be arranged alternately above and below the pivots of the devices mounted in said hangers and may receive the two rows of securing screws. 7 42. In a typewriting machine, the combination of a series of type bars, a type bar segment in which said type bars are supported, parallel links on which said se ment is mounted, key actuated means for shlfting out affecting nation of a key levers and is in a segment on which said type bars are sup-- position of the pivot of the piv oted device, and a fastening screw for each said segment, a series of sub-levers, links connectlng said type bars and sub-leversand which afiord a shifting of the segment withthe other type bar connections, and a series of key actuated toggles for actuating said sub-levers.

43. In a typewriting machine, the combiseries of type bars, a type bar ported, parallellinks connected to the upper portion of said segment, a frame having a transverse ,member that constitutes a rock shaft with forwardly projecting arms which extend therefrom parallel with links and which are connected'to said segment at the lower portion thereof, key act-usaid parallel ated means for shifting said segment on said parallel links and frame, actuating links connected to said type bars, sub-levers connected to said actuating links, and key actuated toggles connected with said's'ub-levers.

44. In a typewriting machine, the combination of printing instrumentalities, a series of key levers pivoted intermediate their ends, terminating at their rear ends in sub stantially the same transverse plane, and having keys on their forward ends arranged iii; a plurality of transverse rows, the ivots o transverse rows so asto afford a uniform motion to the rear ends of the levers for a uniform motion of said keys, means connected with said key levers at their rear ends for operating said printing instrumentalities, and a universal bar lying across the rear ends of said key levers.

Signed at Syracuse, in the county of Onondaga, and State of New York, this 12 day of JulyA. D, 1906.

ALEXANDER T. BROWN.

- Witnesses:

GEORGE C. CARHART, C. E. 'lomnnasorr.

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