US1572396A - Typewriting machine - Google Patents

Description

Feb. 9 1926.

A; G. F. KUROWSKI TYPEWRITING MACHINE 42 Sheets-Sheet 1 Filed May 22, 1924 n i Y .A 11.

A. G. F. KuRowsKl Feb. 9 1926.

TYPEWRITING MACHINE Filed May 22, 1924 2 Sheets-Sheet 2 L SSS ...mmm .n

ALFRED Gt le". KUROWSKL @il BRQKLYN, YR, SSGNOR T@ UNDERWOOD TYPEWETER CUMIANY, 0F NEW YORK, N. Y., A CORPORATION @F DELAWARE.

TYFEWRIQNING MAGHINE.

.application 'tiled May 592, 1924. Serial No. 715,026.

QILZZ whom si only concer/n.:

Beit known that l, Annuel) Gr.' 1F. Konowsur, a citizen ot the United States, residing in Brooklyn Borougln'in the county of Kings,l city and State ot New York, have invented certain new and useiul improvements in TypewritingvMachines, of which the followingl is a specication.1

This invention relates to typewrltlng ma'- y chinos, with particular reference to the manner of limiting the endwise movements of their carriages 1n both dlrectlons by marginal stops. g

The marginal-stop har 1s usually angular' in cross-section having lsquare-cut teeth spaced in accordance with letter-space distances and scaled at intervals in conformity with a paperscale at' the front ot the machine.

Mounted 'to' slide on the bar to adjustably engage its teeth are marginal-stops, one of which may he set to indicate a point lfor the initial character at the commencementof each line, with key-board release for marginal notations; the other sto abell in advance of a predetermined position, thereafter locking the printing elements upon reaching such position, and by the key-board release permitting one. or

:more characters to be printed, as a syllable 'or part thereot, after the predetermined stopposition has loeen reached.

To accomplish these purposes one ot the i features ot the present invention comprises a margn1al-stop, 'tormed ot a single piece ot sheet-metal folded into rectangular sha e,

its, edgesabutting to constitute a hex-hire structure 4enclosing thestop har on 'tour sides and having an inreaching tooth engageable in any ot' the tooth spaces inthe har, and also having a downwardl hentprojection on its underside engageah ewith a iixed carriage stop.

rlhe wall of the marginal stop opposite the tooth-carrying side is -dared outwardly,

providing a housing for a spring normally i holding the tooth in an engaged position but readily yielding to permit retraction ot the tooth when the stop is shifted to a new position an-d it is to be noted that the man ginal stop body is of integral construction, readily and inexpensively produced hv punching and` die-forming methods which also assure unitorlnityof product.

operates har,

1 Another feature is to utilize the mar inal- I' stop bar for the double purpose of` a justably supporting the marginal sto s and also' the column or tabulating stops, t ereby dispensing with separate har tor the latter purpose, saving the expense and weight thereof.

inatter appear. lin the accompanying drawings,

Figure 1 issaJ longltudinal vertical sectional view at the center ol:l the machine.

Figure 2 is a rear elevational view ot `the upper ,portion of the Tcarriage, showing the marginal stops and line-locking mechamsm. 4 v

Figure 3 1s a plan view oi the parts shown 1n Figure 2.

Figure 4 is a side view,rlargely diagram.-

matic, showing the releasing connections for the marginal-stop, the general outline `of thc machine frame appearing in broken lines.

Figure 5-is an enlarged fragmentary front view of the lower lett-hand corner of the machine.

Figure 6 is an enlarged View of the two marginal-stops as `mounted upon a stoplooking from the rear. C

Figure 7 is a plan view of the parts shown in Figure 6. ,Y

Figure 8 is 'a transverse sectional View taken on line 8-8 of Figure 7, showing the right-hand 'marginal-stop.

Figure 9 is a similar sectional view taken on line 9-f-9 otFigure 7.` showing the letthand marginal stop.

Figure l() is a diagrammatic view illustrating the action of the-,marginal-stop on the hell-ringing and line-locking nisms.

mecha- @il Other features and advantages will hereresting pad 25, to strike the face of a cylindrical platen 26, the same being mounted to rotate upon an axle 27, housed within bearings at the carriage-.ends 28.

Theselcarriage-ends are rigidly joined t9- gether by a base plate 29 formed with runwith a pinion 37 `forming part o an escapement wheel 38.

This escapement wheel is mounted on a back-plate39 ofthe carriage-shift frame, and provided with the usual escapement rocker and dogs 40 which areactuated by an interponent 41 mounted lupon a swinging frame 42, the frame being operated b y a universal bar 43, moved rearwardly. by type-bar contact a little in advance of type contact with the platen, thus intermittently releasing the carriage to be moved in a letter-space direction by a tape drawn by aspring-m0tor 44 mounted on the back-plate 39.

The carriage-ends 28 havey inreaching flanges 45 supporting angulararms 46, held adjustably by screws 47, the rear ends of the arms being bent at a righteangle to align a-V marginal-stop vbar 48 held fast by screws 49. The stop-bar 48 extends across the rear ofthe carriage, between the end plates 28 and is provided with rack-teeth letter-'space distances apart and also with indicia corresponding to the reading of a .scaleand pointer (not shown) at the front .of the platen. l

Marginal-stops, generally denoted by the numerals 50 and 60, control the carriage movement towards the left and right hand" respectively, these stops being similar in shape butreversed, each being formed completely lfrom a single piece of sheet metal. The (stop 50, shown in Figures 6, 7 and 9, presents a rectangular box-like slide suited to bear on three sides of the stopbar 48, the edges of thefolded metal abuttin alon the ce ter at the under side.

ldgorme on the straight vwall 51 of the 'stop 50, is a sharply bent, inreaching detent or tooth 52, engageable in any of the tooth spaces in the` adjacent side of the bar, coacting with them in resisting any force applied to the stop in a plane parallel with the bar.

The opposite wall 53 of the stop 1s flared outwardly providing a wedge-shaped housing, between it and the bar 48, to receive a Hat compression spring 54 one of its leaves 55 having plain parallel side edges presented outwardly against the wall 53 and the other leaf 56, adjacent the bar, having lugs 57 on both sideedges near its ends to interlock with the four edges of the stop, preventing detachment of the spring when the stop is assembled on the bar.

The lower wall at the flared end of the stop 50 is bent downwardly at a right angle f/orming an abutment 58, its inner edge eX- tending below the center of the bar, as shown in Figures 6 and 9.

The indexing edge of the stop may be swedged to form a bevelled :tace 59 for convenience in setting the stop to a scale reading on the bar, and the rear face of the stop knuried to promote shitting the same.

As shown by the' broken lines in Figure 7, pressing the rear face 53 of ythe stop to'- wards the stop-bar causes the entire stop to rock, swinging the detent 52 out of engagement with the teeth of the bar; during such disengagement the stop may be moved in either direction along the bar, and upon releasing the finger pressure, the spring elements will restore the detent into locking relation with -tlie adjacent space between the y a depending longitudinal `iange 61 ,bent at its inner end at a right angle to provide an abutment 62 capable of arresting, the carriage when-thrust to the right hand for a new line. V -v y i The stops`50 and 60 have their respective abutments 58 and 62 extended below the bar. 48 on o posite sides in two dii'erent vertical para lel planes for purposes presently appearing.

The rear fixed carriage rail or runway 32 has at its upper edge an extension 65,

forming a seat for an apron 66 having ledges f 67 secured by lrivet-s. 68 to the extension, thus rendering the apron substantially a part of the carriage shift frame.

'A carrier 69 is pivotally mounted on a sho'uldered stud fixed in the apron 66 and 'providedfiwith a retaining screw 70; a spring 71 is coiled about the stud, its ends being en gaged in such manner as to press the earrier against a stop 72 on the apron.

The lower end of the carrier 69 has vsecured to it a wire terminating in a hammer -73 arranged to strike a bell 74 secured to the back-plate 39. The upper end of the car- Yrier supports a pivoted trip 75, actuated by a spring 7 6 arranged to press an offset portion of thetrip against the adjacent edge of the carrier.'

lThe stop 50, in moving in the direction oie the arrow (see Figure 2), will collide with the trip 75 and turn the carrier 69 into the position shown in Figure 10, eventually releasing the trip, allowing the hammer 73 to fall, striking the bell as a signal to the operboard, the accornp ters can thereafter be printed upon a line.`

When the stop 50 is moved in a reverse direction,` as for the commencement of a new line, the abutment 58 will engage the opposite side ofthe trip, causing it to turn upon its axis and pass lidly under the abutment to be restored by the spring. 76after passage of the stop.

After releasing the trip 7 5 and warning conveyed byA the bell, the machine will con:- tinue to operate for usually ve letter-space distances, whereupon the stop" 50 will contactTvi'th a carriage lock-sto 77 Awhich 'will be moved along' by it until a l furthermovement is prevented `b the locking of the keyll'shment 'of which will now be explained. f

'lhe lock-stop 77 is a projecting part of a slide lever 78 havingay slot 79 midway its length through whchq'pa'sses a fixed supporting stud 80, the lever being further guided lcmgitudinallyl by a`- slot 81 at itsl inner end enga-ged with a xed pin 82. An odset element-83, at the inner end of the lever 78, is guided within a slot ina ledge 84 formed on the lower edge of the v. l y

the lever 105, is a stop-tooth 107 shaped to apron 66 and drawnto the left by a tension spring 85 attached at its ends respectivelyv to the o ftset'and apron, the sliding movement ot the lever being limited bythe slot 79.

yThe outer right-hand end of the lever 78 is bent at a right angle forming; a. pad ,86 abutting the curved facial edge 87 ofa lever 88, pivoted at 89 to the rear side of the backplate 39, and extending downwardly to a poi-nt adjacent the loweredge of a frame 90.

The lower end of the lever 88 is bent towwards the front of 'the machine, as at 91,'to

Contact with aA pin 92' projecting upright .from the horizontally disposed lever 93, piv

oted on a st-ud 95 and extending to the front of the machine, where its forked end engages a pin 96, xed in a bracket 97 secured to a key-lever lock plate 98.

rlhe plate 98 is arranged to slide length- A wise against the rear side offa front comb plate 99 upon studs 100 passing through slots 101 .in the combplate, limlting relative movement. AAs shown on Figure l5 the comb plate 99 Y guides the hey-levers 20l and the lock-plate 98 has 'open topped. slots registerable with' the slots ot the comb, in which position the plates are normally held by the tension.-

A line-locking mechanism should be operated during a single letter-space distance is shined ty ne .of the carriage movement, as otherwise a fast operator w111 pile up two characters at the line-locking position. lAs shown in llig-y ure 10, the stop 50, in moving' in the direction of the arrow yal single letter-space distance, indicated' by the broken lines, will shift the lever 7 8 in unisoncausing the lever 88 to actuate the lever 93 plate 98. I l

The square edges of the open slots in the lock-plate act as abutments to receive the key-'levers 20, presenting an interference to the stroke of the key'that stantaneous' in action.- p

When the carriage is shifted to upper case position, the lever 88 4will be raised therewith but its lower end will still engage the pin 92 which'is made' sulliciently ,long for this purpose. l l 1 To co-operate withI the right-hand 'marginal stop 60, a 'stop-leverv 105, 'hung upon the ixed pivot 80,bearsa ainst the apron 66, a hub or collar 106 spacing thei vlever 105 from the adjacnt parallel"4 lever v'78, this space being furtherl maintained by a shoulder on the pin 82. A

and shift thelock- Formed on the 'inner-or let-handend ot engage with the' stop G0 and a ledge 108,` bent at a right angle from` the lower edge vat the right hand of the lever 105, passes* lever 78 has a lengthwise movement independentl of the` lever -105, and that the effeet of t e spring'85 iste pullthe lever 78 to a stop posltion defined by the slot 79, and also to swing both levers on the pivot 804 until seated on an abutment 109 formed at the lower edge of the apron 66.

As shown in Figure 11, the stop 60,when movedjn the direction of the arrow, strikes the raised portion ot the stop-tooth 107, which may be s'lightlyundercut to co-opcrate with the angular vface-oitfthe abutment 62 ony the stop 60, to prevent the stop accidentally skipping the 'tooth 107 under severe impact. l

When the stop engages the stop-tooth 107 the carriage is at its `initial position relative to the line of writing and it notations are required in the left-hand margin, the

ico

stop-tooth 107 nlustY be released trom-the stop 60 to allow the carriage to be shifted in bringing the desired marginal position to the printing position.'

To accomplish this-purpose' the'lever 105 is oscillated to more its tooth 107 below the plane `of the stop' 60, by anarm 110 offa bell-crank, pivoted on a screw lll set in the left-hand side of the carriage. shift-frame and pressed against the ledge 103 by a.

iet

spring 112coile'd' about the screw and having its ends in'contact with the bell-cranl'r` and fra-me side Figure 4.

The other armV 113 of the bellfcranli is is pivoted toAalug 115 of a vertically dis/- posed lever 116 mounted to oscillate upon a screw 117 set into 'a part 4' vof the machine.. frame, and provided with a restoring springv 118,drawing the front corner. 119 of the bottom of the lever into stop position with a se/at'120 formedjon an adjacent part of the machine frame, this seat also c-o-operating with the lever to prevent it `from' being swung excessively rearward,

'lhe upper front side of the lever 116 is providedl with a pushbutton121 extending through an opening in the front shield vlate 122, parallel. over theupper bank of eys.

Thus when conditions exist, as shown in Figure 11, by pushing the button. 121, the intermediate connections cause the lever 105 .to move to the broken lineposition, permitting passage ofthe stop G0, and-when the carriagemovesxto theqright of this figure, the stop willr engage the inclined face of the tooth. 107, pressing it out ofthe path of the stop and withoutmoving any part of the mechanism -except the two levers 78 and 105.l l

When the lcarriage is shifted to the lmelocking positi0n,'as shown. in Figure 10, the-v button 1215may bepressed to oscillate the levers, causing theA lever 78to swing tothe broken line positiomreleasing the stop 50,

` whereupon the-spring 85 drawsjt'he lever 78 .back to its normal f position, restoring the llever 88, thus withdrawing the .locking plate 98. lreleasing the. keylevers and allowing two orv more characters tojbe printed, as in 'completing a syllable or word. In addition to the use of the bar- 48 for adjustably supporting the. marginal .sto'sl inany desired position, the bar may also. e employed for supporting `the adjustable tabulating stops124, as shown inFigures 1 and 2. l

4The tabulating stops, when used, are invariablyV disposed in the space on the bar between the stops 50 andO, and as their length precludes `contactjwith the trip 75 or stop levers 78 or 105, no confusion or confliction can occur by thedouble use of the bar, while on the contrary a very decided economy is effected.

It will be understood thatthe .column or tabulating stops a-re suited to'engage between the teeth of the bar 48, on opposite side-s,'are readily removed or replaced toobtain desired adjustment and'whenA in such adjustment clear all parts of the mechanism except the stop 123, ixed on the machine to be moved interceptingly into the path of respectively, as shown in 1 the tabulating stops by a tabulating key in a well known manner.

'Variations may be resorted to within the scope of the invention, and. portions of the limprovements may be used without others. vpivotally connected with a push-red 114 'exl .tending to the front of the machinelwhere it Having thus' described my'invention, I claim:4

1. Ina-typewriting machin-e, the combination with a rack-bar, of a pair ofmarginal stops, e'ah comprising a slideshaped from a single piece-of sheet metal to engage on three sides of the bar, the fourth side Haring outwardly presenting a wedge-shapedpocket adjacentone edge of the bar, an inreaching -detent on the opposite side, anda transverse abutment on the lower side, said 1abutments extending equally below the bar and in op- Vposite directions from the center thereof,

and a spring .in each pocket normally main' taining the detents in the tooth spaces of .said rack-bar.` 2.. Inra typewriting machine, thecombina-4 tion with a' rack-bar, of a pair rot' marginal stops, each comprising a slide shaped from ,a single piece of sheet metalto engage pn three sides of the bar, the fourth s1de'flar--- ing outwardly presenting a wedge-shaped pocketadjacent one edge ofmthe bar, the? abutting edges of the slide meeting atthe under side, centrally of'the bar, a de tent'` formed at the endl of the wall opposite the flared side, and an abutment extending transversely downward from the opposite sides of `the meeting edges toa uniform dis- .100; in each pocket to retain the d'etents in en-A .tance belowV said bar, and a' bent fiat spring gagemeut with` the teeth of said bar.

3. In a typewriting machine, the cbmbination witha rack-bar, Aof right and left handstops, each comprising a slide fitting the bar at the` top, bottom and rear, the` front wall being spaced to present a triangular openingadjacent thev bar, a detenta on the rear wall for tooth engagement with the rack-bar, av'trans'verse abutment on the lower wall, said abutments extending to a uniform distance below said bar and respectively to the right and left of its lon 0'1` tudinal center, and a reinforcement for die right hand abutment, all of said elements vbeing 'of integral `construction, abent flat spring in each pocket to retain the detents in engagement with the teeth of tlicvrackbar,vand means on. saidsprings to prevent shifting relatively to the slides.

4. In atypewriting machine, the comblnation with a rack-bar,- of .right and left.

hand stops, each comprising a slide'litting the bar at the top,bottom and rear, the front 11gwall being spaced to present. a triangular adjacent the bar, said slide being` Lenses.

wall extending transversely from the meeting edge to the front of the left hand slide, and a flange on the rear abutting wall of the right handl slide, said flange being turned at a right angle towards therear wall constituting a transverse abutment, and

being inclined angularly outward, and a'flatv spring in each slide opening, retaining the detents in engagement with the teeth of said rack-bar. f

5. In a typewriting machine the combination with a rack-bar', of right and left hand stops, each comprising a slide fitting the bar each slide at theirproxim'ate ends, said abutments extending below the bar in relatively opposite directions, a fiat spring bent to present opposed leaves suited to engage in the triangular openings, and lateral lugs at the corners of one of the leaves to engage the ends of the upper and lower walls of each slide to be heldin place thereby.

6. In a typewriting machine, the combination With a rack-bar, of right and left hand stops, each comprising a slide fitting the bar at the top, bottom and rear, the front Wall being spaced to present a triangular opening adjacent the bar, said slide being formed from a single piece of sheet-metal,.tl1e meeting edges of which abut centrally below the bar` a tooth-engaging detent on the rear wall, and an abutment on the lower Wall of each slide at their proximate ends, said abutments'extending below the bar in relatively' opposite directions, said slides being bevelled on their upper proximate edges directlyv over the rack-bar and knurled on their outer flared walls, wedge-shaped flat springs disposed Vin the mentioned openings, and lugs on said springs engaging the ends ofthe slides, saidsprings being fiexed by finger pressure to release the detents from engagement with the rack-bar.

7. In a typewriting machine, the combination with a shiftable carriage frame, fixed.

Supports on the machine for saidframe, a rack-bar fixed in said frame to carry adjustable tabulating stops, and a bell fixed on the machine frame, of' a pair of marginal stops adjustable on said bar, a bell-crank lever pivoted to one Vof the'fixed supports, a stop on the support, a spring drawing the lever against said stop,.a trip-pawl pivoted to said lever in the path of one of said marginal stops, said pawll oscillating the lever when moved by the marginal stop in one direction and yielding upon reverse movement of the marginal stop, means to restore the pawl after passage of the marginal stop,

and a hammer carried by the opposite end of said lever to make contact with said bell when the lever is oscillated.

. 8. ln a typewriting machine, the combina? Y tion with a shiftable carriage frame having fixed supports, a rack-bar in said frame, and a fixed bell, of a marginal stop adjustable on said bar, a bell-crank lever pivoted-0n one of the carriage frame supports, a trippawl pivoted to one'end of said lever to engage said stop, said stop tiltingv the lever when moved in one direction and swinging the pawl inoperatively when moved-reverser' ly, a stop for said lever, a spring urging the lever into contact with the lever stop, and a hammer fixed to the opposite end of said lever to strike said bell upon oscillation'of said lever.

9. ln a typewriting machine, the combinal tion with a shiftable carriage frame, fixed supports on the machine for said frame,.a

rack-bar fixed in said frame to carry adjustable tabulating stops, and a bell fixed on the ,machine frame, of a pair of marginal stops adjustable on said bar, bell-crank. lever pivoted to one of the fixed supports, a stop on the support, a spring drawing the leverl against said stop, a trip-pawl pivoted to said lever in they path of one of said marginall stops, and to avoid the other, a lug on said pawl to engage the lever when the-pawlv is turned in one direction, a spring normally' maintaining the lug against the" lever to transmit movement u on contact with the support stop in one irect'ion, said spring yielding to permit the pawlv to turn without transmitting motion to the lever when the marginal stop makes contact with the opposite edge .of the pawl, and a hammer ari ranged to strike said bell upon oscillation of said lever. l

10. In a typewriting machine, ythe com bination' with a shiftable carriage frame,

fixed su ports on the machine for said frame,

a rackar fixed in said frame to carry adjustable tabulating stops, and a bell fixed on the machine frame, of a pair of marginal stops adjustable on ysaid bar, a bell-crank lever pivoted to one of the-fixed supports, a hammer carried by said lever to strike Said. bell when the lever is oscillated, a trlpfpawl pivoted to said lever to oscillatev thejy same when contact Ais made by the left hand stop against thepawl in movin towards the right, a spring normally hol ing said pawl in engaging position, said spring yielding when the stop strikes-.the pawlin moving toward the left, transmitting no action to the lever, andmeans'for restoring said lever to its initial position afterl oscillation.

11. In a typewriting machine, the combinationl with a carriage frame having fixed supports, and a rack-'bar to carry adjustable tabulating stops, of a pair of marginal stops adjustable onsaid bar', said stops being respectively right and left hand, a bell-'ringin`r crate Said locking means. A

device controlled by the left hand stop, an

a line-locking device operated by said left hand stop at a' predetermined number of letter-space intervals after' actuation of the vbell-ringing device.

12. In a typewriting machine, the combi- .nation with a carriage frame having fixed supports, and a rack-bar to carry adjustable tabulatiny stops, of a pair of marginal stops adjusta leon said bar, said stops be- .ing respectively right and? left hand, bellringino means actuated by the left hand stop, line-locking Ameans -operated by said stop a predetermined number of letter-space intervals thereafter, and key-operated means for releasing said line-locking means permittiiig completion of'a line. i

13. In` a typewriting machine, the com bination with a carria e frame having fixed supports, and a rackar to carry adjustable tabulatin ringing Idevice -controlled by the -left hand stop, line-locking means operated by said "means, the last-named means becoming stop"l a determinate/ letter-space distance thereafter, said means operating irrespective of the plane of the platen of the machine, means for restoring the line-locking .OP erative upon the return of said rack-bar to its initial position, and a key-operated means for.` releasing said line-locking means atwill.,

14. In a typewriting machine, the combi- -nation with a shiftable carriage frame, iixed supports therefor, and a rac-kbar in said-` frame, ofv marginal stops adjustable on said bar, said stops being respectively. right and left hand, a stop-lever pivoted and limitedly slidable on the carriage frame su port, said lever having. a part disposed in tlie path of the left hand stop by` which the lever is moved to the ri ht upon contact therewith, the lever oscillating ,upon its pivot when contact is made in a reverse direction, a spring to restore said lever, and means actuated by the lever when moved to the' ri ht for lock ing the ykey-levers ofthe mac ine.

15. In a typewriting machine, the combination with a shiftable 'carriage frame,

fixed supports therefor, and a rackbar in said frame, of marginal stops adjustable on stops, o f a pair of maginal stops adjusta le on-said bar, said stops being respectively right and left hand, a be-llpresse gpi e for the ey-levers of.

stop-lever when jmoved to the right to `opleft hand, afstop-.lever pivoted and limitedly y slidable on the carriage frame support, said lever having a' part disposed in the path of the left hand stop by which the lever `is moved to the ri ht upon contact therewith,

the lever oscillating upon its pivot when con- Vsto -lever out of the path of the stop.

' 1 In a typewriting machine, the combination with a shiftable carriage lframe, ixed supports therefor, and a rack-bar in said frame, of a marginal stop adjustable 0nsaid rack-bar, a stop-lever pivoted and limitedly slidable on a fixed support, said stop-lever sliding on its pivot when Contact is made by said stop in one direction and turning on the pivot upon contact by the stop in an opposite direction, a s ring for restoring said stop-lever tov its initial position, an offset lever oscillatable in a plane at a ri ht angleto the stop-lever and springleverhaving a fork at its lower end, a linklever having a pinengagin in the fork at its rear end, and a sliiftablii :stop-plate actuated by the frontend of Saidlink-lever, said stop-plate,lockingtlie key-levers of the machine upon transmission of the sliding movement of `said stop-lever thereto.

18. In a typwriting machine, the combination with a shiftable carriage frame, fixed ,supportstherefon and a rack-bar in said frame, of a marginal stop adjustable on said rack-bar, a stop-lever pivoted and limitedly slidable on a fixed support, said stoplever sliding on its ivot when contact is made by vsaid stopv in one direction and turning on the pivot upon contact by the stop in an o posite direction, a spring for restoring sai .stop-lever to its initial posi'- tion, a. key-lever lock, and a compound lever operatively engaging between said stop-1ever and the key-lever lock whereby the slid ing' niovementlo tlie stop-lever is -tiaiisferred to said lock.

i 19. In a typewriting machine, the combination with a Shiftable carriage frame, fixed supports therefor, and a rack-'bar in said frame, of a marginal stop adjustable on said rack-bar, a stop-lever pivoted and limitedly slidable on a ix'ed support, said stop-lever sliding on its pivot when contact is made by said stop in one direction and turning on the pivot upon contact by the stop in an againstan end thereof, said offset opposite direction, a spring for restoring said stop-lever to itsinitial position, a keylever lock, a. compound lever operatively engaging between said stop-lever and the keylever lock whereby the sliding movement of the stop-lever is transferred to said lock, and a push button on the keyboard of the machine for releasing the key-lever lock. 20. In a typewriting machine, the comblna'tion with a shiftable carriage frame-having fixed supports, a rack-bar'in theframe, an adjustable marginal stop on the bar, and a keyboard including a plurality of keylevers and a comb-plate therefor, of a keylever lock ,plate mounted adjacent the comb-plate, said -lock-plate having squareended open slots registerable with the slots `in the comb-plate,1a spring normally maintaining such registration, a sto -lever pivoted and slidable on one of' t e carriage frame supports, said stop-lever'being 4shifted upon contact :with the marginal stop when moving in letter-space direction and unaiected by reverse contact, and lever connections-between said stop-lever and said lock plate. l

21. In a typewriting machine, the combination with a shiftable carriage frame hav- 'ing fixed su ports, a rack-bar in the framef an adjnstab e vmarginal stop on the bar, and a keyboard including a plurality of keylevers and a comb-plate therefor, of a keylever lockj. plate wmounted adjacent` the comb-plate,`vsaid lock-plate having squareended openvslots registerable with the slots in the comb-plate, a spring normally maintaining su`ch registration, a sto -lever ivoted and slidable on one of -t1e carriage frame supports, said stop-lever slidingl upon contact with the marginal stop `when moving fixed supports, and a rack-bar in said frame, of right and left hand marginal stops adjustably engaged on said rack-bar, a stoping the swinging movement of the lever, re-

ing in letter-space direction and tilting upon reverse directional contact, means for guiding and limiting the movement of the stoplever, means for restoring the stop-lever to its initial position after operation, operative connections between said stop-lever andl said lock-plate, and means on the keyboard for with said stop. f

22. In a typewriting machine, the combina'- releasing the stop-lever from engagement I tion with a shiftable carriage frame having fixed supports, and a rack-bar in said frame carrying tabulating stops, of marginal stops adjustable on the rack-bar.said stops being respectively right and left hand, a stop-lever lpivoted to one of the fixed supports, said ever having a raised hook-tooth engageable by the right hand stop when moving 1n letter-space direction to prevent further movesilient means normally retaining the lever on said step, and means on the machine'keyboard for releasing-the lever from said step.

24. In a typewriting machine, the combination with a carriage stop-bar having adjustable marginal stops respectively right and left hand, of a stop-lever pivotally and slidably mounted on the machine frame, said lever having a part engageable with the left hand stop upon movement of thev carriage in letterspace direction thereby sliding the lever, a key-lever lock actuated by the sliding movement-of the lever to prevent operation of the keyboard of the machine, saidlever tilting upon its pivot to permit movement of said stop in the opposite direction, a second stop-lever pivoted on the same axis and adjacently spaced from the first lever, the second lever having a hook projecting to engage the righ't hand stopl when. moving to the left whereby the car-l riage movement is arrest-ed, said second stoplever tilting upon its pivot to permit movement of the carriage to being connected to oscillate in unison, an

abutment for the levers limiting their upward movement, a single springnormally' holding the levers on t-he abutment, saidA spring also actin to restore the first-named stop-lever after i? means t'orY releasing both of said levers from engagement with the respective stops on said stop-bar.

25'. In a typewriting machine, the combination with'a carriage stop-bar having adjustable marginal stops respectively right and left hand, of astop-lever pivotally and slidably mounted on the machine frame, said lever sliding upon contact with the left-hand stop when moving to, the right and tilting upon reverse directional contact, a key-lever lock actuated by the sliding movement of ment of the carriage, means on the keyboard of the machine for releasing said stop-lever, and means for restoring the lever to its initial position. v

In a typewriting machine, the combination with a shiftable carriage frame havthe stop-lever, a second stop-lever pivoted on the axis ofthe first lever, a pin-and-slot connection between said levers, a hook on the second lever engageable with the righthand stop when moving to the left, thereby locking the carriage, said second lever tilting upon its pivot upon reversedirectional contact, a fixed abutment extending below both levers, a guide for the first-named lever, a spring for restoring the first-named lever to the right, said levers eing shifted, and a single v its initial position, said s ring also maintaining both levers norma y seated on said abutment, a bell-crank larm directly below 'both levers, a link connected with the other bell-crank arm, and a push button at the front end of said link, said arms when y vupon reverse directional contact, a key-lever rocked, releasing both stop-levers'simultaneably mounted on the machine frame, said leversliding upon contact with the left 'hand stop whenmoving to the right and tilting lock actuated.` by the sliding movement of the `stop-lever, a second stop-lever pivoted on the axis lof theffiirstlever. a pnl-and-slot connection between said levers, a hook on the second lever engageable with the right hand stop when moving to the left, thereby locking the carriage, said second lever tilting upon its pivot upon reverse directional Contact, a fixed abutment extending below both levers, a guide for the first-named lever, a spring for restoring the first-named lever toits initial position, said spring also maintaining both levers normally seated on said abutment, a bell-crank having one arm extended transversely below the outer ends of said levers, a rock-lever at the front of the machine, a link connecting the other bell' `crank arm to the rock-lever, and a button on said rock-lever, which upon bein pressed releases either of said stop-elevers rom engagement with the corresponding marginal' stop, permitting action of the carriage.

ALFRED G. F. KUROWSKIL

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