US1909908A - Typewriting machine - Google Patents

Description

May 16, 1933. B Q srTlKNEIY 1,909,908

TYPEWRITING MACHINE Griginal Filed Jan. 17, 1930 5 Sheets-Sheet l May 16, 1933. B Q sTlCKNEY l I 1,909,908

TYPEWRITING MACHINE Original Filed Jan. 1'7, 1930 I5 Sheets-Sheet 2 @vm-MM? May 16, 1933- B. c. sTlcKNEY TYPEWRITING MACHINE original Filed Jan. 17, 1930 5 sheets-sheet 3 Patented May 16, 1933 'I UNITEDv STATES PATEN'`l` BURNHAM o. s'ricxNEY, or' HILLsInE, New Jrmsnv, llissrefnor To` d dunnnnwoonj., 'j l:v inLIorrr r1sHERooMrANY,orNnw YORK, N. Y., A coRPoRnrIoN or .DELAWnRn TYPEWRITING MACHIE Application `lled. January 17, 1930, Serial` No 421,348. Renewed `November 21, 1931.

This invention relates.Y to line-spacing vmechanism of typewriting machines, of the lclass in which minute variations of the lnespace movement can be produced, and in which aline-space regulatorcanalso-be adjusted for spacing the lrequired set number of line-space units at each stroke of the Ylever which returns the typewriter-carriage. Upon the platen-axleis fixed a bevel gear, and meshing therewithfis av smallbevel pinion that is fixed upon a vertical main arbor, having: a thumb-wheel at itstop. Meshing with the pinion is a large gear that drives the platen. Also fixed upon the main arbor is a, ratchet-wheel having a multitude of very fine teeth. y y

Concentrically with the ratchet-wheel is mounted a pivoted driving arm, which carries a pawl to drive said `ratchetfwheel. Said pawl-driving arm is a lever of the third class. v i The driving stroke of vthe lever is arrested by the engagement of the pawlgwith a fixed stop, which co-operates with the pawl to lock the ratchet-wheel and platen against overthrow. Y

A regulator-,train may be set for one-half, one, one and onefourth,i` one and onehalf, two, two and one-half or three line-space units. The length of each line-space unit is'determined by the setting of a fulcrum.

The regulator-lever has an adjustable fulcrum, The regulator-lever is pivoted upon the regulating arm,which, like said pawlarm, isV itself pivoted upon said vertical shaft. Y d

This regulator-arm isvformed withan interceptor-cam, which engages said pawl upon the completion of the return stroke of the line-space lever, and releases the same Vfromthe ratchet-wheel, thereby determining the length of the stroke of the ratchet-wheel and platen, and also leaving the ratchetwheel free to be revolved idly with' `the platen when `the latter is occasionally rotated, either by means of said vertical arbor and its thumb-wheel, or by means of the finger-wheels xed upon projecting ends of the platen-axle.

4By swinging the regulator-lever t0 any of the strokefvofthe line-space Vlever may readily be predetermined. l. The .regulator- `lever islongitudinally slotted Vandi when the desired point, and setting it there, the length controls the subsequent motion offthe= line f space lever for driving `the platen to Vthfejex-V tent desired. p i n In the drawings, the-line-spacing and carriagc-returning lever .is shown in the form j l of alever ofthe second order, wh1ch is ful` crumed in rear of the verticalfarbor `of ,the- `line-space Wheel. `This yrenders it practicable to reduce the distance to whichthelever extends forwardly of the platen. lThe linger-hold at thefront of the flever extends only as far forwardly as is customary in Underwood standard typewritingmachines; and the line-spacingl mechanism, including the lever, is entirely mounted upon the upr .and-down platen-shifting frameof said machines. The pivoting of the lever'. at the rear part of the deviceconduce'sto compactness, inasmuch ast-he slide uponA which the fulcrum-pin of the leverl `isfixed' may be lmounted mainly at. the rear.` part Ofi the mechanism, away from the line-space-regu- `lating train, whichextends forwardlyfrom the line-space-lever arbor. This arrangement conduces .to accessibility as well 'as compactness and lightness; f The height ,to which the mechanism rises above the platenaxlel issubstantially reduced, owing `to the' compactness which is securedfbyithe.pivotsy `ing of the line-space lever in rear ofthe vertical `axisy of therline-space,` wheel.V 1 Said fulcrum-pin slide may be operated by means `of 'a lever that is pivotednpon thel vvertical fixed' shaft wherein is mounted the arbor of the line-space wheel. Said lever projects 'to the left, andis `provided :witha finger-piece, index and scale, andiis compactly placed between the fulcrum-pin'slide and a collar which is formedupon said vertical fixed shaft. f' A The line-space. regulating trainincl'udes a lever vwhich is fulcrumed upon an adjustable fulcrum-pin in rear ofthe line-space-wheel' broken away, showing the invention in one form.

Figure 2 is adiagram showing the strokes of various members seen at Figure 1.

Figure 3 is a sectional plan of a form of the invention in which the line-space lever has a variable stroke, and is arrested by the adjustable'regulator-lever, according to the setting of the latter.

Figure 4 is a sectional side elevation, showing the brackets and iixed parts seen at Figure 3.

"Figure 5 is a sectional side elevation of the mechanism seen at Figure 3. Y

#Figure 6 is a separate View of a line-space lever seenr at Figure 3, together with the drive-arm, to which it is pivoted, and the `p aWl carried by theV drive-arm.

Figure 7 is a separate view of the regulater-frame seen at Figure 3, including the regulator-lever, and the releasing arm or bail, to which it is pivoted.

Figure 8 is a sectional plan of the devices seen at Figure 3, but showing the line-space lever` at the conclusion of its drive-stroke, andvalso illustrating the index and scale for use in adjusting the fulcrum of the regulater-lever. I

j yFigure 9 is a sectional front elevation of the mechanism seen at'Figures 3 and 5. V Avr carriage-returning and line-spacing handle lO'projects forwardlyfrom a table 11, forming part of a bracket, which is secured upon the left-hand end plate 12 of the shiftable platen-frame 13 of an Underwood standard typewriting machine; a platen 14 beingijournaled in said platen-frame by means ofv an axle 15 having 'at each end a hand-wheel ,16. The main'jcarr'iage is indicated at 16a.

Said handle 10 is a lever of the second order, which turns about a vertical stationary rear fulcrum-pin 17. Said lever 10 is 'Y articulated at 18 to a lever 19 that carries 'at its outer end` a pawl 2O.l At its end kthe pawl-lever 19 is pivoted concentrically with a vertical rotary main arbor 21. Fixed upon `said main arbor isa wheel 22 of great diameter, having ratchet-teeth 23. As the lever 10 is used to drive the carriage 16va from left to rightat Figure 3, it swings about fulcrum 17 from left to right, carrying lever 19 in the same direction, together with the pawl 20, which at this time is meshing with the ratchet-teeth 23. Thus wheel 22 is re` volved, together with a bevel pinion 24 (Figure 9) that is also fixed upon said vertical mainl arbor 21; saidpinion meshing with a large bevel gear 25, which is fixed upon the platen-axle 15, thereby linespacing the platen 14.

The pawl-lever 19 is a lever of the third l order, and is employed for the purpose of multiplying the movement of the pawl 20, as compared with the movement of the driving pivot 18. The parts are so arranged that this movement-multiplying lever 19 can swing, together with the 'ratchet-wheel 22, through an arc of about 120 degrees, at a maximum stroke ofthe line-*space lever 10.

The ratchet-wheel 22 having great diameter, as compared with the platen, and its teeth ,having very fine pitch, substantially accurate spacing of they platen is reliably secured.

The fulcrum-pin 17, in rear of main arbor 21, is made adjustable lengthwise of vthe line-space lever 10, to shorten the rear arm thereof. The lever is provided with a longitudinal Slot 26, to accommodate such adjustment of the fulcrum-piny 17, and a maximum `variation of 100 percent or more, in the measurement of the line-space unit, may be secured by adjusting the fulcrum-pin 17 from its extreme rearward yposition to its extreme forward position.

The stationary fulcrum-pin 17 may be set either at its extreme Aforward position, to give a minimum measurement of line-space unit, or at its extreme rear position to give a maximum measurement, orat any position lintermediate said limits.

The direction of adjustment ofthe ful- Crum-pin 17 is along the line-'space llever slot 26 when thelatter is seen at the extreme right-hand vend of its working suroke, represented by a dotted line at Figure 2. (See also Figure 8.) The lever at this time is 'arrested by means of a stop 27, which is fixed in the path of the spacing pawl 20, see Figure 3; the'head of the pawl being beveled at 28, yand the stop 27 being given a corresponding inclination, for the purpose of locking the pawl into the teeth of the ratchetswheel, so that the latter cannot be overthrown by reason of the momentum of the platen geared thereto. f

The fulcrum-pin 17`is supported for adjustment by means of avslide 29, which underlies the top 30 of the table 11. An adjustment lever 30at is provided with a fingerpiece 31 for convenience in forcing the slide forwardly or backwardly.

The finger-lever 31 is pivotally mounted upon a fixed vertical shaft v57 within which the arbor 21 rotates. Lever 31 has a pinand-slot connection 33 with the slide 29, and an index 33a and scale 33b aid the operator in determining Where to adjust the fulcrum pin 17 by means of the slide. The lever flange 43, riveted to the slide 29.

and slide are confined between the table-30 and a broad supporting washer 34, Figure 4, that is fixed upon shaft'57. The' slide. is also supported and guided by studs 35 pendentfrom table 30 and engaging longitudinal slots 36 inthe slide.V The slide has a wide slot 37 to clear ,the-shaft. v

The slide 29 and the guide-slots 36 v,are arranged diagonally, extending in the same direction -as the slot 26 in the line-space lever when seen at the endof its driving stroke, as at Figure 8. It is possible for the fulcrum-pin 17 vat this time to be adjusted forwardly or backwardlyv by means of therfinger-piece 31, without vibrating the lever. No matter what the length of the driving stroke ofthe lever lOfmay be, 'it' will always be arrested,` together with the spacing pawl, the ratchet-wheel and the platen, by means of the overthrow-stop 27, whose position remains fixed. A stop-pin 40 'on the forward part offsaid lever 10 may normally rest against a regulator-lever 70, Figures 1 and 3. To the lower end of the fulcrum-pin 17 may be swiveled a guide-block 42, grooved to fit over the edges of'slot 26 in the linespace lever 10. At its forward end, thelever-slot 26 may have an arcuate enlargement 44, Figure 6, permitting the leverito clear the fixed shaft 57, and also facilitating the assembling of the lever, etc. The guideblock 42 and the lever l0 maybe supported by a collai 45 that is secured upon the lower end of fulcrum-pin 17, Figure `The latter at its upper end is formed with a head- From the foregoing it Vwill, be seen that the platen may be line-spaced repeatedly by operating the carriage-returning lever 10, since the latter imparts to the line-space Wheel'22 repeated rotations through a much greater angle than the vibration ofthe line space lever; the movement of said line-space wheel being transmitted through vertical arbor 21, pinion 24, gearl 25 and axle 15to the'platen; the drive stroke of the linespace lcverbeing arrested by the overthrow-stop 27, and its return' stroke being (if desired) arrested by the stop 41.l The levers 10 and 19 are returned to normal positionsuby a spring 52, coiled around fixed `shaft 57, or hub56. W i l 1`,

The pawl-lever 19 may be provided with the hub 56, which is pivoted uponsaid gena eral shaft or bearing-postor stem 57, dropped from the table-top 30,v and made hollow to yserve as a. bearingfor the vertical arbor 21, line-space wheel 22 and. pinion 24. The hub 56 of the pawl-lever 19y restsupon ashoulder 58 that may be formed upon the lower portion of said shaft, and the latter is drawn upwardly by a fastening nut 59, which is threaded upon the upper 'end of the shaft thatextends upjthrough ahole in the table-top 30. Upper and lowerV co1- lthe same extent. lThe effect is the same upon lars 60 Vare confined betweenthetable-top and al shoulder. 61f(Figure `4) fon'sthe shaft, and these collarsenable the nut 59to force the shaft firmly uptoafseat, for' rigidity. A

.The pawl--lever 19is confined loosely be- 9570- tween the shoulder 58 rand av washer '61 fixed on 'the shaft. i The pawl-arm .19' overlies the ratchet-wheel 22, andthe pawl `2O .is pivvted at 62to the under side( of said arm 19,i l y I T re5. .vv .he normal position ,.of. the pawl-arm `19 is different foreach adjustment: of -the ful`V` Crum-pin. 17 Theshoulder 40 ofy said `-line.- space lever may normallyrestfagainst said stop 41, but the .pawlk 2O :is .normally discon- 530 nected from the linefspace Wheel. 22,; to permit independent rotation of the plate-n by means ofone of the hand-wheels -:16 or by `means of' a thumb-wheel. 63.5v The latter: is fixed upon thefproject-ing. top `offtheline-335- space-wheel arbor-21.* Fine adjustment-of the work-sheetl is afforded' at any `timeiy'by means of-63. 1 r .l

The multiple-tooth pawl .20 is brought accurately into'in'esh withthe ratchet-wheel'ao j at the beginning ofthe driv'e .stroke of lever 10, by `means' of a spring 64, under the control of a trip or cam 65whichy normally.l restrains thepawl byengagementjwith a'releasing shoulder 66 that is-.formed upon the W5 pawl. V.This camv liesfin the :pathof.` the shoulder66, to 1be struck. `thereby at* the conclusion of the *return vstroke ofthe linespacing train, `whereby the pawlis fended awayA from the Vratchet-'wheel 221,.:Figurez3.

This releaselofythe pawl, andiitsf reengagementl with the wheel, may 'be properly timed, throughout all of the variationsin the measurement Lof Athe line-space .unit Whicha're vsecured by different. adjustments `of thecful- Crum-pin 17. The adjustment of -theli-njespace-lever-fulcrur'n` pinl7 is also made "effective to adjust the position offthepawlreleasingl cam 65.` This `result is securediby providing a carri-train, which iin kmany 1 re- :i110 spects may-abe coincident with the llinen space-lever train, see Figures, 6,17 andV 8. a

f The' pawl-controllinfg train includes an arm or lever 68, which isLfulcrumed/upon the same general yshaftorfbearingfpost 57 511,5 as the pawl-arm 4,19,so-,thatk it ;may1swing around saidshaft` to. any desired .position j to intercept and release the-pawl. Said arm V68 is articula-tedv atGS'to-said lever 70, and

extends rearwardly. :and has y a .clearance -71 anda longitudinal slot 72,-so that :mainly resembles in planwand,displacement the 4lineyspace vlever 10;:the pivot 69` being lcoincidentwith F18, .the` leverfIbearing 73 being concentric with the shaft- 57: The ,slotf72f of the lever4 is fitted to thel samefulcrum` pin 17 thatv is used forlthe. line-'space lever 150.

The pin `17 is adjustable alongthe ,linespace lever withthe,cam-leverl70,"and to -fect an increase in the drivingstroke. of the paWl-lever 19, to increase the stroke of the ratchet-Wheel; While the cam 65 swvingsto a corresponding position, so that thereafter Athe paWl may sooner be Withdrawn" automatically from the ratchet-Wheel, With eX- actness of'timing; and it is also reengaged to the ratchet-'With .exact itiming upon the starting :of 'the succeeding line-spacing stroke. u l f' f y' .Universal variation is obtainable in the extent of stroke of the paWl-arm 19, with concomitant resetting of the paWl-controlling cam 65. vThe operator needs only. to adjust the pin 17.

At Figures 1 with -18 a pivot 69, connectingregulatorlever 70 to a rocking bail,having arms 74 and 68, which have upper and lower bearings 73 upon the main shaft 57. Arms 74 and 68 may be formed as a bail in one piece With intervening vertical web-plate 76; the arm 74 overlying 68, see Figure k1. f'lhe lower bail-arm 68 may rest upon a flange 77 that is formed upon the bottom of bearing 57.H Bail-arm 74 mav be fitted upon a cylindrical portion of shoulder 61 that isforined Aon the collar 60. This bail- structure 74, 76, 68 may therefore be confined betweenV 77 and 61a for pivotal motion, to permit Yadjustment of the releaser 65. EXactness ofv timingin correspondence With anyadjustment of 70, is effected by merely turning the handle-31. Y z Y' Thextable 11,`comprising atopplate 30 and va depending-flange, andV overlying the lever-system and the line-space wheel, may extend from the left from a bracket in the form of a plate 78 that is secured by screws 79 upon the left-hand carriage-end 12 of the Underwood standard machine; said end having the usual bearing for lthe platenaxle` 15. lAn'auxilia'ry vertical bracket 82 'may be secured byscre'ws 83 to thelefti hand end ofthe platen-frame13 in said provement may machine`, and may rise at the left of the gear and have a bearing for thexplaten-axle 15, and may also be provided with a bent- Vout flange 84, to form a bearing for the lower end of the vertical arbor 21. The iinbe manufactured and sup- Wood standard machines.v I

The trains may be made to do( further A'duty in regulating the gross line-spacing `stroke of lever 10, foreither single, double or triplev line-spacing; and preferably also vfor'half-line spacing and also one and a and there is coincident IJ notch. 'A nger-piece quarter, one and a halfk and `tvvo and a half line-spaces, for each'lever-stroke. Thisv adjustment involves setting thel lever edge- Wise to corresponding stations or locations. Said lever has a locating tooth 88fadapted to seat in any one of a range Vof notches 89 cut in the bottom edge of the front flange 90,0f the table. 1

It will be seen that Wherever theabovedescribed regulator-lever is set, it; may serve to arrest the pin 40 of theline-space lever 10, and determine forf'hoW many line-space units the platen shall .be rotated at each stroke, regardless of the measurement of the line space unit that isdetermined bythe ratchet-Wheel, because the releasing cam 65,

in thisY form of the invention, is adjusted together With said lever 70, ovvingto the ivoting of the release arm to the lever v70. If desired the line-space lever 10 may be held in its Figure 8 position during `the rersettings of the regulator v70,;al'though, if required, ythe two levers ..10 and 70 may be swung together to either-left or right during such adjustment, and in no casewill the paWl 20 be engaged, or the platen rotated.

The tooth 88 may project upwardly from aslide .93 that may be guided in a'slot 93'LL by pins 94 projecting from the slide; and a spring' 95 may hold the toothf88 back in any the slide. i

'In the diagram at Figure 2, 89 represents the line of space-regulating notches. Fulllines A represent the normal .positions of the 96 may be carried by line-spacing leverswhen the machine is Vadg justed for three line-spaces of maximum unit n measurement; this corresponding to .Figure v3. Three-unitspacing may be obtained for anyV measurement of unit.v Dot-and-dash lines B represent the normal vposition of the line-space levers Vwhen the fulcrum-pin 17 vhas been adjusted forwardly to provide a minimum measurement of the line-space unit, for three units.

The Vregulator-tooth 88 is shown in eX- treme left-hand position, for securing three spaces of either maximum or minimum unitmeasurement. This tooth 88 may be shifted overto the rightto a one-space position, at

which time the lever 10 Will normally occupy the position seen at C, if the fulcrum-pin 17 is at its rearward maximum-unit position. But if said pin 17 is placed at its for- Ward extreme position, then theV normal position -of lever 10 is indicated at D.. But from every starting position jvA, B andv G, the lever swings to one final position Certainy features herein shown are disclosed in my senior application, No. 405,307, filed November 7, 1929, but the claims herein Y limprovements may be used without others.

.Having thus described my invention, 1.1

claim: i 'A 1. Ina line-spacing mechanism, the combination of a line-spacingratchet-wheel provided with a vertical arbor and having a multitude of teeth of minute pitch, a forV wardly-extending line-space lever of the second order, a movement-multiplying arm connected in front of said arbor tosaid linespace lever and'having a driving clutch for! said, line-space wheel,- said line-spacef lever vibrating upon; an axis which is parallel with the arbor Vof the line-,space wheel, said clutch-armbeing pivoted `to turn about the axis of the line-space Wheel, said line-space lever having a fulcrum in rear of said arbor,

and means affording an adjustment of said fulcrum. v 2. In a line-spacing mechanism, the combination of a line-spacing ratchet-wheel, mounted upon a vertical arbor, a line-space lever of the second order and having a fulcrum which is stationary during the linespacing operation, a movement-multiplying arm connected to said line-space lever forward of said arborand having a; driving clutch for said line-space wheel, said clutcharm being directly pivoted to said line-space lever, the latter vibrating upon an axis which is parallel with and in vrear of the arbor of the line-space. wheel, said clutch-arm being pivoted to turn aboutsaid arbor, adjustable means in rear of said arbor for varying thev leverage of the line-space lever` upon the clutch-arm, and means affording an adjustment of said fulcrum. f

3. Ina line-spacing mechanism, the com bination of a: line-spacin 'ratchet-Wheel mounted upon a vertical ar'or, a line-space lever ofthe second order andhaving `a fulcrum which is stationary during the line-r spacing operation, a movement-multiplying arm connected to said line-space lever for- Ward of said arbor and having a drivingvv clutch for said line-space wheel, said clutcharm being directly pivoted to said linespace lever, the latter vibrating upon an axis which is parallel with and in rear of the arbor of the line-space wheel, said clutcharm being pivoted to turn about said arbor, adjustable means in rear' of said arbor for varying the leverage of the line-space lever upon the'clutch-arm, means affording an adjustment. of said fulcrumfand separate independently settable means fo'rjdetermining the number of units of space through whichV said lever line-spaces 'the work-sheet at each operation.

4. The combination of a line-space wheel,`

a linespace lever, a clutch for 'said Wheel,

means connectingjsaidleverf to said clutch,

a fulcrum-pin for said lever which is sta-v l tionary` during the line-spacing operation, `a slide Yuponnwhich saidf fulcrum-pin i is iixed, means yfor guiding saiol slide, aflever having- Va finger-piece for A,operatingV the slide,

A and an index and :scale for said slide-lever.'`

5. The combination'of a line-s ace wheelV having 1a vertical arbor, aiorwar ly-extend-` 75 ing line-space lever, a clutch for said wheel,v a iulcrum-pinior lsaid lever .in rear .of said arbor, a'slideupon which said fulcrum-p'in' is ixed,-1neans for guiding said slide, and `a Crum-pin projecting from said slide; and an pivoted to, said lever vin `front :of said arbor and mounted to swing about the axis of said line-space Wheel. f j 6. The combination ofV a line-space wheel provided with a vertical arbor and having a multitude of vteeth of minute pitchfa forwardly-extending,line-space lever ofthe second order, a pawlfor said wheehan armufor, said p'awl, means pivotin Said levertosaid arm forwardlyofjsaid ar or, a fulcrum forv said leverin rear of, the line-space wheei arbor, a slide upon which said fulcru'm is fixed, means Jfor guiding said slide, Vav fingerpiece for yadjusting the same, aregulatorlever fulcrumed upon said pin, a .regulatorarm turning upon said arbor and pivoted tei said regulator-lever forwardly of said arbor, separate means adjustable independently of said fulcrum for determining the number of units of space through which said lever line-v spaces the Work-sheet at each operatiomand a stop for arresting said pawl and preventing overthrow, the direction of adjustment of said fulcrum-slide `beingsuchthat atall adjustments thereof said line-space lever, is arrested by said st0p. i i j jf 7 The combination of 'a line-space wheel havinga-vertical arbor, a line-spacing train including a line-spacelleverof theV second orderl fulcrumedF iny vrear sof said ,arbor, a Wheel-driving clutch, a driver mounted upon said arbor for said clutch,.said driver pivotally connected to said lever infront ofsaid arbor, a line-space-regulator train which Iis mainlya doubling of said'line-spacing train and includes a regulator-levercoincidently fulcrumed with said line-space lever and having connected thereto a regulator-armV whose vpivoting and lever-connection are coincident with those ofsaid driver, said regulating arm having means for releasingsaid clutch from saidfwhfeel, a common fulcrum in rear ofsaid arbor for said-levers, a device for adjusting -their fulcrum for varying their leverage, a line-space-regulating set of stations, means to'detain saidregulator-lever selectively.` at differentstations, and a clutchloclring stop to arrest-said` line-space lever linger-piece for operating the slide,said,ful

at thesame position for driving strokes of all lengths.- `A I Y 8. The combination -vvithv a' line-space Wheel havinga vertical-axis, of a forwardly-V extending line-spacingV drive-train, a linespace-regulator train including a regulator- Y lever having pivoted thereto in front of said axis a regulator-arm, the vlatter pivoted ccncentrically With said Wheel and having means for controlling the connection of saidV drive-train With said Wheel, and an adjustable fulcrum-device in rear of said axis for minutely varying the leverage of said regue lator-lever.

c lever having 9. The combination with a line-space Wheel having a vertical axis, of a forwardly-extending line-spacing'drive-train, a line space-'regulator train including a regulatorpivoted thereto in front of said axis a'regulator-arm, the latter pivoted concentrically VVwith said vvlaeel and having means for controlling the connection of said drive-train with said Wheel, anV adjustable fulcrum-device in rear of said axis for miferent points in said rack.

nutely varying the levarage of said regulatorlever, means to detain saidV regulator-lever selectivelyat different set stations, and a stop to arrest said driving train at the same position for driving strokes of all extents.

10. The lcombination-of a line-space Wheel' provided With avertical arbor and having a multitude of minute teeth, a line-spacing train including a forwardly-extending linespace lever and a Wheel-driving pawl, a linev space-regulator trainvwhich includes aV regulater-lever fulcrumed in rear of said arbor and'having pivoted thereto in front of said arbor' a regulator-arm, the latter havingy means for releasing said pavvls from said:

karbor a regulator-arm, the latter havin means for releasing said pavvl from sai Wheel, adevice for adjusting the fulcrum of said regulating lever, a rack, means to detain said regulator-lever selectively at different points in said rack, and a single stop to arrest said line-spaceV lever at the same e position fordriving strokes of all extents. 60

12. The' 'combination with a line-space Wheel, of a forwardly-extending line-space lever, a clutchfor driving said line-space Wheel, a stop to arrest the driving stroke of the line-space lever, a line-space-regulator train including a lever fulcrumed in rear of the line-space Wheel axis and-means pivoted to said regulating lever to release-said ,clutchfrom said Wheel,fa pivot connecting the regulating lever With said releasing means, a locating rack to co-operatewith said regula-' 70 tor-lever to retain it selectively at predetermined locations, said regulator-'lever hav-f ing an adjustable fulcrum,'said releasin@r means being mounted concentrically. Wit

said line-spacevvheel, an arbor for said linespace Wheel, and a fixed shaft Within whichr said arbor is j ournaled, said-releasing means being pivoted upon said shaftl 13. In 'a line-space mechanism'for a typevvriting machine, the combination of a ,line-K. space Wheel, a line-spacing train including both a forwardly-extending lever; and a movement-multiplying arm driven thereby, the arm being mounted to rotate'coaxially with said line-space Wheel, a clutch operated by said arm, a line-space-regulating train including a lever fulcrumed in rear of the linespace Wheel and also including a releasing device pivoted coaxially With said Wheel, and pivoted -to said regulating lever, and means for varying the leverage of said regulating lever upon said releasing device, by adjusting the fulcrum of said regulating lever.'

14. The-combination of a line-space Wheel, a line-spacing train which includes both a lever and a movement-multiplying arm. which the lever directly drives, said arm mounted to rotate coaxially with said linespace Wheel, a clutch for connecting said arm to said Wheel, a line-space-regulating train including'a forwardly-extending lever having an adjustable fulcrum at the rear of the Wheel, said regulating train including a clutch-releasing arm pivoted to said regulating lever forwardly of the Wheel-axis, a systemk of stations, andrmeans forl detaining said regulating armat any station. 15. The combination withV a line-spacing element and a line-space Wheel, of va for- Wardly-extending line-spacey handle inathe forfsaid clutch, saidreleasing device form of a lever of the second order, afsupport having mounted thereon for adjustmenty a fulcrum-pin at the rear ofthe line-space Wheel for said lever, a movement-multiplying clutch-arm `to Which lsa-id lever is directly pivoted forWardlof the Wheel-axis, said clutch-arm being in theform of a lever of the third order'and being pivoted con'- centrically with said line-space wheel, and movement-reducing gearing connecting said line-space Wheel to the line-spacingy element.v 16. The combination of a line-space regulating lever, means for setting it selectively at different fixed stations, a fulcrum-pin, said lever having a slot for said fulcrum-pin, a slide upon Which said fulcrum-pin is mounted for adjustment along said slot,a guide upon which said slide-is mounted for movement diagonally with reference to `said slot, and a pivoted arm having a pin-andslot connection to said' slide for adjusting the latter. v

17. The combination of a line-space regulating lever, means for setting it selectively j at different fixed stations, a fulorum-pin,` said lever having a slot for said ulcrumpin, a slide upon Which said fulcrum-pin is mounted for adjustment along said slot, a guide upon which said slide is mounted for movement diagonally with reference to said slot, a pivoted arm having a pin-and-slot connection to said slide for adjusting the latter, and a line-space Wheel Whose movements are to be' regulated; said arm being pivoted concentrically with said line-space Wheel, said line-space wheel having teeth of fine pitch, and a line-space drivlng pawl normally released from said Wheel; said regulating lever having means for determining the point of release.

18. The combination of a line-space regulating lever, means for setting it selectively at different fixed stations, a fulcrum-pin,

said lever having a slot for said fulcrum-pin, a slide upon which said fulcrum-pin is mounted for adjustment along said slot, a guide upon which said slide is mounted for movement diagonally with reference' to said 33 slot, a pivoted arm having a pin-and-slot connection to said slide for adjusting the latter, a line-space Wheel whose movements are to be regulated; said arm being pivoted concentrically With said line-space wheel,

35 said line-space Wheel having teeth of line pitch, and a line-space driving pawl nor-V mally released-from said wheel; said re j lating lever having means for determining the point :of release, the pawl having a shoulder, and a cam controlled by said regulating lever to engage said shoulder to release the pawl.`

BURNHAM C. STICKNEY.

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