US2316865A - Typewriting machine - Google Patents

Description

April 20, 1943. w. F. HELMOND l TYPEWRITING MACHINE Filed June 2o, 1940 5 Sheet's-Sheet 1 April 2o, 1943. w. F. HELMoNb 2,316,865

TYPEWRITING MACHINE Filed June 2o, 1940 5 sheets-sheet 2 INVENTOR ATTO R N EY April 20, 1943. w. F. HELMOND TYPEWRITING MACHINE Filed June 20, 1940 5 Sheets-Sheet 3 ii,... llwmrm, n

' INVENTOR Mzz/Au/ /f/,eZ//A/ BY KV ATTORNEY pril 20, 1943. w, F, HELMOND l2,316,865

TYPEWRITING' MACHINE Filed June 20, 1940 5 'Sheets-Sheet 4 xxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxx V xxx xxxxxx,I Ixx xxx; xx xxxxxxxI x.v xxxxxx x x'xxxxxxx x xxxx x xxx xxxxxxxxxxxxxxxxxxx 1Q v x xx ff; x x

zi-X L INVENTOR x #42144# [bf2/w16 y 27 BY Q, g4 ATTORNEY April 2G, 1943. w. F. HELMOND 2,316,865

TYPEWRITING MACHINE Filed June 20, 1940 5 Sheets-Sheet 5 ATTORNEY Patented Apr. 20, 1943 nests TYPEWRITING lVIACHINE William F. Helmond, Clinton, Conn., assigner to Underwood Elliott Fisher Company, New York, N. Y., a corporation of Delaware Application June 20, i940, Serial N o. 341,420

22 Claims.

This invention relates to typewriting or similar machines having a carriage movable upon a frame, and more particularly to devices employed in such machines to regulate the limits between which a carriage may travel.

Devices of this kind usually embody a left and a right margin stop adjustable to various fixed positions on the carriage along a single rack bar, and a counterstop on the frame.

It is also known to provide a row of stops that are individually settable at various points along the carriage to cooperate with counterstopping devices for controlling the margins Within which a work-sheet is to be typed. The invention is more specifically related to devices of such general character.

One of the objects of the invention is to provide simple, economically manufactured and reliably operating devices for selectively rendering certain of a plurality of stops operative for confining the movement of the carriage within desired marginal limits.

It is another object of the invention to provide a series of stops, each one of which is settable to cooperate with counterstopping means either for limiting the leftward or the rightward movement of the carriage.

A further object of the invention is to provide identical stops that are adapted to serve as left or vright margin stops and means associated therewith to set these stops selectively With respect to counterstopping devices for either left or right margin-gaging function.

It is .another ob-ject of the invention to contrive means for conveniently setting stops at will for left or right margin-gaging function, the means being operable in different positions of the carriage to set different stops.

Another object of the invention is to provide simple and emcient devices for selectively restoring such stops which have been set for inargin-gaging function.

- It is also an object cf the invention to provide conveniently settable margin-stopping devices for determining a plurality of line lengths in a single traverse of the carriage thus providing for typing a plurality of adjacent columns on a sheet.

Other objects of the invention are to associate key locking and margin-releasing devices With the aforesaid improved margin-controlling mechanism.

Various other features and objects of the invention will readily become apparent from the description and claims that follow and from the accompanying drawings.

According to the illustrated preferred embodiment of the invention, a series of stops are supported at letter space intervals upon a typewriter carriage for individual setting movement from idle to margin-'gagging positions. A stop-setter upon the main framework of the machine is operable to set individually any stop that is first positioned opposite it by movement of the carriage. In order that the stop-setter may set a stop for left or right margin-gaging operations, it is conceived to arrange the counterstop movable upon the frame for locating it either leftward or rightward of the stop that in the particular position of the carriage is opposite the stop-setter. In other words, the counterstop is arbitrarily conditionable for cooperation with a stop that is being set, to limit the carriage travel in either carriage feed or return direction. The counterstop is influenced to normally occupy a position just rightward of the location of the stop-setter. Two stop-setting keys are provided, one of which when actuated operates said stop-setter and additionally displaces said counterstop, while the other one when actuated operates said stopsetter without displacing the counterstop. Therefore, depending on which one of the keys is operated, a set stop becomes either a left or a right margin stop. A stop set as a right margin stop, that is, as a line-end stop, is capable of moving the counterstop when the carriage approaches the line-end and a key-locking mechanism operatively associated with the counterstop is thereby rendered eective. The counterstop is key-movable to inoperative position to release the carriage when desired, for movement beyond the stop position. A key-operable device is also provided to restore any stop that is brought into adjacent relation with the left or the right side of the counterstop.

In the drawings:

Figure 1 is a front view of a typewriting machine embodying applicants novel margin-gaging devices including key-controls therefor. For the sake of clearness, many parts unnecessary for an understanding of the invention have been omitted.

Figure 2 is a sectional side elevation of substantially the organization of parts shown in Figure l.

Figure 3 is a fragmentary front View showing the stop restoring mechanism of the invention in operated position, a restoring key being diagrammatically shown as having been operated.

Figure 4 is a fragmentary front View illustrating a carriage stop set adjacent to the left of the counterstop by the operation of a diagrammatioally represented left margin setting key.

Figure 5 is also a fragmentary front vieW of the margin-gaging devices showing the counterstop laterally displaced by a partial depression of a schematically represented right margin setting key.

Figure 6 is a fragmentary view similar to Figure 5 showing a settable stop set adjacent to the right of the counterstop by the completed depression of the right margin setting key.

Figure '7 depicts the manner in which the settable stops are mounted and detented' upon a supporting rack.

Figure 8 is a schematic illustration showing separate stops set for left and right margingaging function for each one of two spaced writ,- ing columns.

Figure 9 is a diagrammatic view illustrating a key locking mechanism rendered effective by the movement of the carriage to a line end limit as dened by a set stop.

Figure is a fragmentary front view showing the counterstop moved to an ineffective position by the margin-release key.

Referringnow more particularly to Figuresv 1 and 2 of the drawings, a carriage Il) includes spaced carriage-ends II that are rigidly con,- nected by a carriage bar I2. A platen cylinder I3 extends parallel to thecarriage bar I2 and is revolvably mountedV at. its opposite` ends in the end plates II .of the carriage. The carriage bar I2, and, therefore, indirectly the carriage, is guided in a conventional manner between track- Ways I4 and I5 of a frame-member I6 which extends intermediate two opposite side walls I1 of the machine. A usual carriage springy not shown, moves the carriage in carriage feed direction leftwardly under the control ofV an escapement I3, The escapement normally checks the rotation of an escapement wheel I9 that is geared to a carriage-rack 2by means yof a shaftY 22 and a pinion 2|. The escapement I3'r is operated in a conventional manner, not' shown, at the actuation of type-keys 24 anda space-key not shown. The typing instrumentalities may be ofA any known kind and may include type barsv 21 (see Figure 2) that are movable against the platen I3 by the type-keys 24 in a manner not shown. The carriage letter-spaces in consequence of'each type-key operation so that the characters will be typed one next to the other. Feed rolls 29 indicated in dot-and-dash lines in Figure 2 bear normally against the underside of thev platen I3 to hold a work sheet 32 in typing position thereupon. Thework sheet may rest at; the rear of the platen I3 upon an apron 33` extending upwardly and rearwardly from the bottom side of the platen. A series of blade-like stops 35 are supported at letter space intervals; upon a U-shaped channel bar 36V that is secured atv its ends upon the carriage ends I I. The stops 35 are vertically guided between buttressing teeth 38 provided upon both internal sides ofthe U-bar and their upper ends protrude through slots 39 cut into the bar 36. All stops are movable or projectible from identically idle to identically set margin-gaging positions. A detenting springY 46 is associated with each stop to hold it in. either one of said two positions. In their effective or set position, the stops 35, defining, respectively, thev left and right margins, are in alignment with each other in the direction of carriage movement, particularly as to their lower portions. which engage a counterstop 42 in barring carriage travel at said margins. In their idle or unprojected positions, all stops 35 are clear of the counterstop 42 which embodies an upright arm that is limitedly swingable to two positionsA about its lower end on a pivot pin 43 upon a bracket 4,5 that is secured to a cross bar 46 of the framework of the machine. The upper portion of the c ounterstop 42 protrudes upwardly throughV a rectangular hole 41 provided in a horizontal plate 48 that is fixed upon the top of a housing 50 carried by the carriage track frame member I6. A spring 49 normally draws the upper end of the counterstop rightwardly against an abutmentV 5I formed by the right side of the rectangular hole 41. The left side of the hole 41 constitutes an abutment 52 for limiting the extent to which the counterstop 42 is swingable leftwardly about its pivot pin 43; see Figures 5, 6 and 9. The front and rear sides of the hole 41 serve to guide the counterstop 42 at its upper end in its lateral movements. The stops 35, which set or projected, may limit either the leftward or the rightward movement of the carriage I0 depending on whether .or not the counterstop 42 is moved leftward of the stop 35 that is being set.

As seen in Figure 2; a stop setting element, 54V

reaching upwardly at the front of the stop-carrying bar 36 has two vertical slots 55,` one below the other. shouldered pins 56, extending through the slots and securedto a bracket 51Y risingv upwardly fromrthe plate 48, guide the stop setting element 54l for vertical movement'. The stop setting element 54`has a narrow stop setting ear 58 reaching rearwardly over the stops 35" on the bar 36 and is. operable to set in eachletterspace position of the carriage a different stop in a setting region intermediate the two positions of the counterstop. The stops 35` are laterally spaced in agreement or in a vdefinite ratio with the letter-feed movements obtainable by the' escapement mechanism I8, I9, Yand the laterally;

stationary setting ear58 is posedA over a different stop 35 in the different letter-,feed positions of the' carriage. The normal'lateral position o f the setting ear 58 with respect to thecounterstop 42 is such that the ear when itis moved downwardlyV will set, adjacent to the left of the counterstop; whichever stop 35 is overlyingit; seeFlgure 4. Any stop 35 so set,`limits the return, that is, the rightward movement oftheY carriage -IQto thereby define the left margin on the work sheet 321 For conveniently operating said setting element 54A to thereby set a stop 35 to the left ofthe counterstop 42', there isa left margin-setting key 6I) provided near the left end' of the` typewriter keyboard; see Figure 1. This keyBOis mounted upon the forward end oraV rearwardly extendingkey lever 6I which isl pivoted intermediate-its.

ends on a horizontal fulcrum rod 621 The keylever-6I is laterally confined in a slot cut trans-- versely` into a cross-bar 63 which cross-bar also supports the fulcrum rod 62. tending link 64 is articulated atits lowerend to the rear end of the lever 61|, and? is pivotedati its upper end to the right end.I ofa horizontal lever 65-y the left end of which has a pin-and-slot" connection 66 with the setting slide` 54". The lever 65 is pivotally supported on a bracket 617`Which is secured to the housing 50. Y tached to the link |3414 resilientl'y normally h'olds the entire slideoperating train 6I, 64'! and 65 in the position seen in Figures-1 and'3. Upon opera;, tion of the key 60, the train 6I, 642i and 65'1transmits a downward movement-to the4 settingv slide 54, so that its setting ear 58 will move downwardly and therefore set whichever stop 35l'lsf posed underneath it. The lower end of a so set stop 35 will then be adiacent the left of* the` counterstop 42 (see Figure 4) and the'set stop will serve in the capacity off a` carriageI return margin stop.

first` leftwardly displaces saidycounterstop 42' and' Anupwardly ex'-v thereafter operates the setting slide 54 to set Whichever stop 35 is positioned underneath it. The lower end of the set stop is then adjacent to the right of the counterstop 42 so that the set stop will serve as a right margin stop, that is, a line-end margin stop. The right margin setting key is mounted upon the front end of a rearwardly extending key lever 1| which like the lever 6| is also pivoted between its ends upon the fulcrum rod 62. A link 13' connects the rear end of the lever 1| to an arm 14 that is fastened to the right end of a rock shaft 15, to the other end of which an arm 16 carrying a pin 18 is fastened. As seen in Figure 1, the right end of the shaft is pivoted in the right side wall I1 of the machine and the other end is pivoted to a bracket 11 that is secured to the cross bar 83 of the machine frame. During the initial downward motion given to the key 19, the pin 18 moves upwardly to thereby act upon a cam-face 19 provided upon the counterstop 42 to swing the latter leftwardly substantially against the abutment 52 in the plate 48, as seen in Figure 5. During the remainder of the key stroke, the pin 18 glides idly along a vertical face 89 of the counterstop arm 42, as seen in Figure 6. From Figures 1 and 2, it can be seen that the arm 14 lies normally a short distance below a pin 82 projecting from the vertical link 64 that is operable by the left margin setting key 69. At the initial down-stroke of the right margin setting key 19, as seen in Figure 5, the arm 14 rises upwardly to engage the pin 82 while the counterstop 42 is being displaced leftwardly. As clearly seen in Figure 6, during the remainder of the key stroke, While the pin 18 glides along said face 80, the arm 14 engages the pin 82 and lifts the link 64 so that the stop setting slide 54 becomes operated and therefore sets to the right of the counterstop 42 whichever stop 35 may be posed underneath the setting ear 58. A stop so set functions as a line-end margin stop. The connection between the link 84 and the rear end of the key lever 6| may include a slot 83 to permit the link to be raised Without operating the lever. A return spring 84 retains the lever 6| in normal position independent of the link 64. The entire mechanism that is operable by the left margin setting key BU returns to normal position whenever the key is released. Of the mechanism operable by the right margin setting key 10, the counterstop 42 remains. leftward of the set stop after the release of the key. The key-lever 1| and the parts 13 to 16, inclusive, are returned by a spring 85 that is attached to the pin 18 on the arm 18.

Any stop 35, whether set for left or right margin gaging function, is operative to arrest the carriage in the feed position in which the stop has been set by the setting ear 58. The small space seen in Figure 4 between the counterstop 42 and the set stop 35 corresponds to the usual back lash of the escapement mechanism |8, I9. With a stop 35 set for left and a stop 35 set for right margin-gaging function, as seen in Figure 1, the carriage is movable between the very carriage positions in which the stops were set.

. Any set stop 35 may be individually restored by the operation of a restoring key 86, after the carriage has been moved leftwardly or rightwardly to bring the stop which is desired to be restored into adjacent relation with the counterstop 42. As clearly seen in Figures l, 2, 3 and 9, a stop restoring shoe 81 is movably carried upon the upper end of the counterstop arm 42 and comprises a channel-shaped portion 88 which slidingly embraces the front and the two lateral sides of the counterstop 42 near its top end. The channel portion 88 presents at each opposite side of the counterstop, near the upper end thereof, a restoring ledge 90. The ledges 99 are normally below all the stops 35, but the key 86 when operated will raise the shoe 81 so that the ledges 9|] will engage and restore any set stop 35 that is adjacent to one or the other side of the counterstop. The restoring key 86 is located near the left end of the keyboard (see Figure 1) and is mounted upon the front end of a key lever 9| which, at its rear end, has a link connection 92 to an arm 93 that is secured to a horizontal rock-shaft 94. At about the center of the machine, in the lateral region where the counterstop arm 42 is pivoted, the shaft 94 carries another arm 95 which is connected with the shoe 81 by a link 91. The rock-shaft 94 is pivoted at one end in the left side wall of the machine and at the other end in a forwardly bent ear |9| of the bracket 45. As seen in Figure 2, the entire train from the key 86 to the shoe 81 is resiliently held in the normal position by a spring 98 that is acting upon an arm 9S fastened to the shaft 94. Since the link 91 is capable of moving substantially on an equal pivotal arc with the counterstop 42, it is readily seen that the lateral position of the stop arm has no influence on the vertical position of the restoring shoe 81. Figure 3 shows the shoe in an actuated position, a stop 43a having been restored by one of the ledges 99.

It is desirable that the type keys 24 be locked against operation as the carriage approaches the line end dei-ined by a set stop 35. As hereinbefore made clear, a stop 95 set for line-end margin gaging operation engages and laterally moves the counterstop 42 when the carriage approaches the line-end typing limit. This movement given to the counterstop 42 is utilized for actuating a key locking mechanism now to be described. A horizontal rod |92 is at its left end pivotally attached to a bell-crank |83 and its right end is guided in a hole |84 provided in the housing 59. A spring |85 resiliently maintains the rod |82 in contact with the left side of the counterstop arm 42. The bell-crank E83 is pivoted to a rightwardly extending bracket |96 attached to the housing 59 and is adapted to rock a key-locking bail |88 by a wire link |81. The key-locking bail |88 includes `a bar |89 parallelly in back of the keyboard which is normally clear of the path of hooks on the type-key levers, see Figures l and 2. As the carriage moves toward line-end position, a stop 35 moves the counterstop 42 leftwardly and, in consequence thereof, the parts |92, |93, |81 and |88 become displaced and thus move the bar |89 underneath the key-lever hooks lll. Under some conditions, the bar |99 may collide with the back side of a key-lever hook To avoid the bending of parts in this event, a flexible element l?. is inserted in the bail operating train at the juncture between the link |01 and the bail |98. This flexible element |2 moves the bail |88 to locking position as soon as the obstructing hook i l rises above the bar |89.

It is sometimes desirable to type beyond the margins defined by set stops 35, and for this reason, the counterstop 42 is movable below the space traversed by the stops 35, by the operation of a margin-release key H4. ln Figures 1 and 2, it can be seen that 'the counterstop has a right- Wardly and upwardly inclined slot H5, through which the pivot pin 43 passes. The counterstop 412fu1crums norn'ially.about-the. lower end-ofthe slot.: l i becausev the; spring 491i not; only: urgesfthe ccunterstop @2 to the; right but. also upwardly.

When the counterstop: Misto-lie. lowered, the keyn tends rightwardly fromV itsV lower. end. rIhe bail.

'nger iZi swings downwardly at' the depression oithe key E4-and moves the I22, together with the counterstop arm 42, downwardly; The

upper end ofthe counterst'oparm 42r is then outv oi" cooperative range with ally stops 35 and' the.

carriage may be moved to anyI desired position. The slotI lid is inclined so that. the counterstop arm 2 is movable downwardly without interferenceromthe pin 78, associated wtih the mechanism for setting a stop 35 tothe right of the counterstop. Figure shows the counterst'op arm :i2 lowered by depressing the release-key H. It is tope notedV that thecounterstlop becomes leftwardly displaced at line end and that if thereafter' therelease key ill-li is operated, the counterstop moves first downwardly along the left side of the settablestop and thereafter rightwardly against the abut-ment 5l. This rightward movement allows the keylocking bail lB-t'oimove to-ineilective position.l The'sequenceoi the above movements takesy place because` the 'nger If2lf in no way opposes the swinging movement ofthe counterstop toward the right, but in fact aids it. Thev release key Hd' maybe released immediately after operation, in which casethe counterstop 42` moves upwardly under the urgeof the spring 49'to occupy a position rightward of the stop. 35, and the carriage is therefore iree'to move further in letter-feedv direction.

Figure 8` shows two stops 35 set to control the opposite margins of one column and two otherr stops set to control the opposite margins of another column. The carriage is shown to be in a posit-ion for typing in' the righthand column. the counterstop d2' being, intermediate the right pair of stops 35. In order yto-type in the other column, it is merely necessary to operate the releasel key l Iwhile movngthecarriage to within the -typing range ofthe other'column.

The tabulating mechanism may be of conventional construction and may comprise a stop oar. rying rack |27' similar to the rack 36 and stops H28 settably arranged thereupon and one or more key projectible counterstops |29 carried bythe housing 50.

Although the invention is described with a certain degree of particularity, it is to be understood that many different embodiments are possible and that applicants invention is not limited to the specific details, combinations and arrange-- ments of'parts shown and described; Also certain parts 01"' the invention may be used without others.

What' isY claimed is:

1. A margin-gaging mechanism for a typewriter having a frame and a carriage movable leftward'- ly and rightwardly thereon; comprising a settable stop, a counterstop, said sto-p and counterstop being oppositely on the frame and on the carriage, and means, capable of selective operation, for setting said stop into operative relation' with the counterstop in a specic position of the carriage, said means includinga devicefor selectivelydetermining different relativepositionsof the counterstop and; theA set; stop. in a direction: ofV carriage; travel, depending on said selective operation in stop: setting', so thatsaidt stop and counterstopmay serve to: limit, carriagezmovement. either leftf--f wardly or rightwardly.V

2. In a.` typewriter having. two elements', onea frame and the other aV carriage movable.. on the;- framefin letter-spaceiincrements toa plurality of rest positions; a: margin-gaging mechanism includinga series of. letter-spacedsettable stopson. one of said elements, said' stops beingy settable: in alignment: in the direction of carriage. movement, for. both right and leftmargin gaging; counterstop means on the other of said .elements adapted. to coact with the set stops of` said series; and' means for setting a. stop of said seriesv at any carriage-rest position and for selecting'itsrelation to thev counterstop means for eitherA right. or

leftl margin-gaging, whichever is desired, at said' carriage-rest position.

3. A margin-gaging mechanism for a. type:- writer having two membersconstitutingl a frame and a. carriage movable in letter-feed steps; comprising a series ofstops'on one of said members, slightly spacedI in definite ratioto the letter-feed steps and settahle selectivelyr to an eiective posi;- tion; a counterstop on the'oth'er of said members; means on the other of said members for individ-l ually setting said stops into position for cooperation with the counterstop, with the carriage at a selectiveletter-feed point; and a device for se.- lectively determiningdiflerent relative positions ofthe set stop and the counterstop with the carriage at said selected letter-feed point, in which; relative positions the set stop and counterstop may serve'tolimit carriage movement either leftwardly or rightwardly, barring carriage movement at said letter-feed point. v

4. A margin-gaging mechanism for a typewriterl having two members constituting a frameV andi a reciprocatory, letter-feed-controlled carriage; comprising a series of stops on the onel member, slightly spaced in denite ratio to the' letter-feed steps Yand selectively settable to identical positions effective for gaging either the lett or-right margins ;l an element on the other mem-` ber; operative at a-specic point, for individually setting'said stops to effective positions; a counterstop on the other-member; and means for causing: said counterstop to-be positioned selectively at either one side or the Vother of the specific stop-setting point, whereby a s'etstop of the series maybeadapted'to gagey either the left or the right margin, arresting the carriage at the same position thereof at which the stop was set.

5..'In a machine ofthe class described having a` frame. and; a carriage movable thereon in: opposite directions, in combination, a series of stops on the carriage` arranged at spaced intervals for v individual settingfrom an idle to a margin-gaging` position, means on the frame' to set said stops, individually under selective control of the position of the carriage; and counterstop means on theV framek conditionable for cooperation"I with a stop being" set to limit carriage movement se-v lectively in either direction.

6. In a typewriter having a frame and a1 carriage movable thereon in letter-feed' and return directions, type-keys and a device on the frame operable to lock said keys against operation; a stcpmountedl on the4 carriage for movement thereon from an idle to an effective position, means on the frame-operable in a particular'position of tlfiecarriagetosetsaid stop to` eiectiver position, and means on the frame adapted tos operate said key-locking device and selectively eonditionable in said particular carriage position, in cooperation with said stop, to limit carriage movement in return direction or to operate said type-key-locking device.

'7. In a typewriter having a frame and 'an escapement-controlled carriage adapted to travel leftwardly and rightwardly on the frame, a stop movable transversely of the carriage, a second stop, said stops being oppositely on said frame and on said carriage and normally non-cooperative, and means to render said stops cooperative to limit either the leftward or the rightward travel of the carriage, said means including a device independent of the escapement to cause a variation in the relative positions of said stops in the direction of carriage -travel and a device to move said transversely movable stop into cooperative relation with said second stop.

8. In a typewriter having a frame and an esvcapement-controlled carriage adapted to travel leftwardly and rightwardly on the frame, a stop movable transversely of the carriage, a second stop, said stops being oppositely on said frame and on said carriage and normally non-cooperative, and means to render said stops cooperative to limit either the leftward or the rightward travel of the carriage, said means including a device independent of the escapement to cause a variation in the relative positions of said stops in the direction of carriage travel and a device to move said transversely movable stop into cooperative relation with said second stop, the last said device including manipulative means at the front of the typewriter.

9. In a typewriter having a frame and a reciprocatory carriage thereon feedable in letterspaced increments, in combination, a series of stops slightly spaced in deiinite ratio to the letter-spaced increments and individually settable from an idle to an effective position, a counterstop, said series of stops and said counterstop being oppositely on the frame and on the carriage, means for individually setting said stops at a point in constant relation to the counterstop, and mechanism operable in part by said stop-setting means, for causing the counterstop to be positioned selectively at one side or the other of said stop-setting point.

10. In a typewriter having a frame and a reciprocatory carriage thereon feedable in letterspaced increments, in combination, a series of stops slightly spaced in denite ratio to the letter-spaced increments and individually settable from an idle to an effective position, a counterstop, said series of stops and said counterstop being cppositely on the frame and on the carriage, key means for individually setting said stops at a point in constant relation to the counterstop, and mechanism in part operable by said Vkey means for causing the counterstop to be positioned at one side or the other of said stopsetting point.

11. In a typewriter having a frame and a carriage movable in opposite directions thereon to in said particular letter-feed position to reverse the lateral position-relation of said stops, means operable to set said settable stop while the carriage is in said particular letter-feed position, and key means selectively operable to operate said last means either alone or together with said next to the last means, whereby said stops may be rendered cooperative to limit the movement of the carriage in the desired one of the directions.

12. In a typewriter having a frame and a carriage movable thereon to dilerent letter-space positions, a series of stops arranged at letter-space intervals on the carriage to be set individually transversely thereof from idle to margin-gaging positions, a stop-setting element on the frame opposite which a different settable stop is posed in each different letter-space position of the carriage, a counterstop limitedly displaceable on the frame from closely rightward of the setting element to closely leftward of the setting element, key-operable means to operate said setting element, and key-operable means to displace said counterstop and operate said setting element.

13. In a typewriter having a frame-member and Aa carriage-member laterally movable thereon in opposite directions, a series of laterally spaced stops on one of said members, each stop being supported for individual setting movement transversely of the carriage-member from an idle to a margin-gaging position, a counterstop on the other of said members having laterally opposite stop-engageable sides, stop-setting means on the counterstop-supporting member, including a right and a left margin stop-setting key, and means selectively operable by said setting keys to cause said counterstop and the stop being set to assume a. selected lateral position-relation, to engage each other, in limiting carriage-member travel, at one or the other counterstop side depending on which of said setting keys is operated.

14. In a typewriter having a frame and a carriage movable thereon to different letter-space positions, a series of stops arranged at letter-space intervals to be set individually transversely of the carriage from an idle to a margin-gaging position, a counterstop, a normally idle stop setting element, said settable stops on the one hand and said counterstop and said setting element on the other hand being oppositely on the frame and on the carriage, said setting element being operable to individually set said settable stops under selective control of the position of the carriage, means operable independently of moving the carriage to effect a change in the relatlve lateral positions of said counterstop and said settable stops, and means operatively associated with said last means and said setting element to set a, settable stop relatively to the said counterstop adjacent either the left or the right of the latter.

15. In a typewriter having a frame member and a carriage member movable thereon in letterfeed and return directions, a series of stops arranged at letter-space intervals on one of said members, type-keys, a device operable to lock said keys, a counterstop limitedly displaceable upon the other one of said members and connected to operate said device, said stops being individually settable transversely of the carriage member at either side of the counterstop to engage the latter during movement of the carriage member in letter-feed or in return direction, a set stop, if engaging said counterstop during movement of the carriage member in letter-feed direction, displacing said counterstop and therefore operating said key-locking device, and means, partaking of the lateral displacements of said rcounterstop, to restore" any .set stop Ythat .iis `in adjacentrrelatonwith said counterstop.

116. -In attypevvriter'having a frame-,and acar- `riage movable laterally jthereon, :stops mounted at laterally Aspaced intervalsto beset individually 'on :the carriage, transversely thereof from idle tofmargin-gagmgpositions,'a'counterstop mounted on .the 'frame for lateral displacement from Va vnormal .to an operatedpo'sition,'means to later- ;ally :displace said ,counterstop, t an element on the 'frame operableifor setting said stops selectively lun-der .the control' of the position Yofthecarriage Jintocooperative "range with saidcounterstop, Asaid stops beingsettable'dependent on the lateral kpol:sition of said `counterstop to adjoin said counterstop to the left torto the right, .and a stop restoring element of greaterwidththan the coun- -1terstop,V 'laterally movable with the latter and f -lmarg'in-gaging position, 'a counterstop member .'.mountednon'theiframe for leitward displacement from :anormalposition to an operated position to operate said key-locking device, means yiniiu- `:encirrg .said 'member toward normal position, an element on Ythe frame :operable for selectively set- "ting Asaid "stops under -control of the position of the rcarriage into cooperativev range with .said

counterstopimember 'at apoint to the left of the .normal .position'o'f the latter, key means tooperfate 'said setting element to :thereby set astop to ftheleft 4of the counterstop memberrand key means to leftwardly displace said counterstop member .and to operate said-setting element to seta stop toithe'right of said `counterstop rnember.

13. `In a typewriterfhaving a frame and 1a carriage movable thereon,a:series of Astops mounted :on the `carriagelatlslightly spaced intervals and `settable individually transversely'of the carriage -irom anidle to iamargin-gaging positiomia coun- 'terstop mounted onzthe frame for limited lateral Adisplacementfroma normal position, means urgingsaid Vcounterstopto .normal position, an elementY on the frame for Vindividually,setting-said stopsselectively under .control of the position of the Vcarriage-to .the margin-.gaging position, for 4cooperation with l'said counterstop, at a point to -one's'ideo'f the normal' position of the ,counterston Zkey lmeans "to operate said .setting :element toA thereby set 1a stop 'to the 'said one side of the fcounterstop, andkeymeans'to displace saidlcounterstopffrom the normal position and to operate 'said setting element to therebyset 'a Vstop to the "other-side ofthe counterstop. y

v19. "In a `typewriter having a fra-maand vacarriage movable thereon, a series of stops mounted on the carriage at slightly spaced intervals and v fsettable individually transversely -of the carriage `from an 'idle 'to Ya margin-gaging position, a counterstop `mounted Ion the frame for limited Vleftward displacement from ,a .normal position, means Yurging 'said Acountersi'op to normal position, anie'lement on the frame foriindividually ysetting said stops selectively .under control ofthe positionof thecarriage-to the'margin-gaging pofsition, at a point to the left of .theinormal position of fthe counterstop, key means to operate said setting element to thereby set ka stop to the .left of .the :counterstopfand' key =me`anszto` ,leftwardly displace said ate ,said :setting element to therebyset astop .to the right of the counterstop.

counterstop and tooper- 20. A margin-gaging mechanism Vfor a typewriter having raframe and a reciprocatory carriage movable thereonin letter-space increments;

comprising, a series of identical stops arranged,

slightly spaced in definite ratio to the letter-space increments,,substantially throughout the carriage run, for individual -setting' from an idle to `an effective position for margin gaging, a counterstop Yeiective to intercept the Vset stops, any two stops of said series set at opposite r sides of the for limited movementczf the carriage afterinter-`V `ception of a set stop of saidseries by saidcounterstop ,in atleast one direction of carriage move- I ment, .thefextent oflimited movement vbeing such that the carriage is arrested substantially at the position thereof at which the stops were set.l

21. A margin-gaging `mechanism for a typewriterhaving a frame and a reciprocatory 4carriage movable thereon in letter-space increments, comprising a series of identical stops arranged, slightly spaced in den'ite ratio to the letter-space increments, substantially throughout the carriage run, for individual setting from an idle to an effective position for margin gaging, a counter- ,stop eiiective to intercept the `set stops, any two stops of said series set at opposite sides of the counterstop being adapted to gage the margins of a typing line, means to individually set saidstops including a stop setter effective at asettingpoint,

.said series of Stops on the one hand and said -at .letter-spaced intervals Ysubstantially throughout .the .carriage run, for individual setting from Aarnidleto a margin-gaging position; a counter- ,stop arranged .on the frame to intercept the set stops', Aany twostops `of said series set at opposite sides of the counterstop being adapted to gage the margins of a typing line; Vkey-actuable means on the frame, including a single stop setter eective at a setting point, to individually set -said stops selectively by positioning the carriage; means mounting said counterstop for movement inthe direction of carriage travel between limits defining ,right and left positions of the counterstop at each 'side of said stop-setting point, to

arrest the two set stops in either direction Vof carriage movement substantially atsaid setting point; and means yieldably holdingsaid counter- 'stop at one limit of movement.

" WILLIAM JF. HELMOND.

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