US2017135A

US2017135A - Typewriting machine

Info

Publication number: US2017135A
Application number: US691790A
Authority: US
Inventors: Jesse A B Smith
Original assignee: Underwood Elliott Fisher Co
Current assignee: Underwood Elliott Fisher Co
Priority date: 1933-10-02
Filing date: 1933-10-02
Publication date: 1935-10-15
Anticipated expiration: 1952-10-15

Description

Oct. 15, 1935. J. A. B. SMITH 2,017,135

TYPEWRI'TING MACHINE Filed Oct. 2, 1955 ssneets-sneet 1 INVENTOR ATToRN EY.

Oct. 15, 1935. J. A. B. SMITH (PYPEWRITING MACHINE Filed Oct.,2, 1933 3 Sheets-Sheet 2 ?atented Oct. 15, 1935 tJNiTED STATES Y TYPEWRITIN G MACHINE Jesse A. B. Smith, Stamford, Conn., assignor to Underwood Elliott Fisher Company, New York,

N. Y., a corporation of Delaware Application October 2, 1933, Serial No. 691,190

29 Claims.

This invention relates to typewriting machines, and particularly to improvements for expediting the resetting of margin-stops.

There is frequent occasion to vary the width of the margins. A limited number, say three, of

margin-width gradations for any width of worksheet is usually sufficient. Relocation of the margin-stops is not usually an operation that can be performed with celerity, and when the, stops m are frequently set, the aggregate time expended for shifting the stops back and'forth is considerable. To provide for uniform paragraph-indenting, it is also customary to reset a tabulating stop with reference to the setting of the marginstop that gages the beginning of a line. The additional resetting of such paragraph-indenting stop at each line-length change is a further timeconsuming factor.

To minimize the time and work involved in changing the gaging of the line-length, the invention employs novel means in association with a pair of margin-stops that are shiftable lengthwise of the carriage. Said novel means are arranged so that easily and quickly eifected adjustments thereof by simple manipulation such, for example, as the turning of a finger-knob, afford a sufificient plurality of changes in the linelength from or back to a primary line-length which is ordinarily established by setting said .stops lengthwise of the carriage.

A line-end signal-device and a line-end typinghey-lock are usually both controlled in relation to thefsetting of the margin-stop which comes into play at the finish of a line. A feature of invention resides in organizing the novel line-lengthchanging means, so that, regardless of how said means are adjusted, to effect the aforesaid quick change to one or another line-length, such quick adjustment nevertheless also automatically provides for enabling the line-end signal and the line-end keylock to function in proper accord with the changed line-length.

The two margin-stops, one for the start and one for the finish of a line, are preferably mounted on the carriage and adjustably located lengthwise of the latter by means of letter-spaced notches. A non-traveling counter-stop is preferably between the traveling stops. Each traveling stop is organized so that at whatever position it is set by means of said notches, with reference to the width and position of the work-sheet, it may, by means of easily and quickly effected adjustments, not involving a shift of said stop to other notches, present a stop-face at different, points lengthwise of the carniagefor c'o-operation with the counter-stop. Such points of stop-face presentation by each margin-stop may be sumcient in number to afford the desired number of margin-width gradations.

Since the margin-stops are organized to each 5 present a stop-face at 'difierent points for each notch-located position of a margin-stop, the stop-face-forming means of the line-finishman' gin-stop may act, as will be shown, to operate the line-end signal-device and line-end key-lock in 1 accordance with the point at which the linefini sh margin-stop presents its stop-face.

The stop-face-forming means differently presentable by each margin-stop may be permanently coupled to, or similarly made part of, said 5 margin-stop, to the end that a shift to relocate the margin-stop lengthwise of the carriage by means of the aforesaid notches carries said stop- ,face-forming means along to the newlocation. This latter feature affords an advantage in that 20 only two locations, one for the right margin and one for the left margin, need to be made by means of said notches withreference to any work-sheet width or position.-

Another feature of invention resides in organ- 25 izing the two novel stops so that when a change in line-length is to be made,- the stop-face-forming means for both stops are adjusted simultaneously by the aforesaid easily and quickly efiected manipulation, since a change in margin-width is 30 usually made at both sides of the work-sheet.

Another feature of invention provides that the -aforesaid,easily and quickly effected manipulation also effects automatically the setting of a line-indenting stop or stops, in accordance with 35 the line-length change resulting from said manip ulation.

In practicing the invention, each margin-stop may have a stop-face which is fixed, in that it is not adjustable except as the margin-stop is 10- 0 cated by means of the aforesaid notches. Interposable between said fixed stop-face and the 'counter stop, there may be a block or similarly suitable element to afford a stop-facenearer to the counter-stop, and hence effective, when inter- 5 posed, to correspondingly shorten the line-length. Similarly, still another block-may be interposed between the counter-stop and the stop-face presented by the first block, so as to provide for still further shortening of the line. It will be seen 50 that the number of blocks thus interposed and the positions of their stop-faces from the fixed stop-face determine the number and degree of variation of the line-length or margin-width gradations. 55

The blocks may be mounted so as to be'shiftable transversely of the direction of carriagetravel to bring their stop-faces into and out or line with the counter-stop, and a block or blocks may be further arranged relatively to the margin-stopso as to be carried along when said margin-stop is shifted in either direction lengthwise of the carriage for location by means of the aforesaid notches.

Means-preferably in the form of a cross-shaft mounted on the carriage, may serve to shift the blocks of both margin-stops simultaneously, the cross-shaft having means whereby, upon its r0.- tation to one or another angular position, the blocks for both margin-stops are simultaneously caused to be effective or inefiective, the interposition or withdrawal of one or another of the blocks depending uponsaid angular position, and being possible irrespective of where the marginstops are located by means of the above-mentioned notches. Means may also be provided whereby rotation of said cross-shaft or similar member, to one or another of its angular positions, efiects corresponding setting of a line-indenting stop. 7

The line-end signal-device and line-end keylock device may be operable by means of the block of the margin-stop that gages the finish of a line when said block is in efiective position, said devices also being operable by the line-finish margin-stop directly when all the blocks are'withdrawn.

Other features and advantages will hereinaiter appear.

In the accompanying drawings,

Figure 1 is a perspective view of a typing-machine carriage, showing the application thereto of one form of the novel margin-stop devices.

Figure 2 is a perspective view, illustrating a de-, tail for locating the margin-stop lengthwise of a notched rack.

Figure 3 is a side view, showing a modification of the margin-stop-block organization, certain parts being illustrated in cross-section.

Figure 4 is a perspective of the modified margin-stop organization seen in Figure 3.

Figure 5 is a perspective diagram, illustrating the operation of the line-end signal-device by means of the novel margin-stop when the latter has been adjusted for a line-length shortened by the interposition of the blocks.

Figure 6 is a top plan view diagram of some parts involved in the line-end signal-operation illustrated in Figure 5. I

Figure 7 is a side elevation section view of the typewriter, showing how the novel margin-stop devices are arranged relatively to the line-end signal-devices, the tabulator-key devices, and the line-end key-lock. The view being into the interior of the machine, certain cross-members are shown in section.

Figure 8 is a top plan diagram similar to Figure 6, illustrating how the margin-stop for the finish of a line operates a certain member for keylocking.

Figure 9 is a perspective view of the stop-organization, showing the parts adjusted for a medium width margin, the illustrated adjustment involving interposition of one of a pair of blocks for each margin-stop.

Figure 10 is a top plan view, showing details of the cross-shaft of Figure 1, whereby the marginstop blocks are interposed or withdrawn.

Figures 11, 12 and 13 are diagrams illustrating the relative adjustments of the margin and paragraph-indenting stops. Figure 11 shows how the parts are adjusted for the narrowest width margin. Figure 12 shows the adjustment for a medium width margin; and Figure 13 shows, the ad- 4 in a carriage 28, guided by rails 2|. A letterfeed rack 22 on the carriage meshes with a pinion 10 23, coupled, as shown, to an escapement-wheel 24 cooperating with a type-key-controllable dogrocker 25 and a spring-motor 26 to letter-feed the carriage.

The novel carriage-stop organization is as 1501- lows: Secured to side members 21 of the, carriage is a margin-stop-supporting bar 28 having stoplocating notches'29. A pair of opposite marginstops are indicated as L and R. Each marginstop has a body-portion 30 slidably fitted, as indicated in Figures 1 and 2, to the bar 28. Each body-portion presents a stop-face 3| for oo-operation with a counter-stop 32 disposed between the margin-stops L and R, and normally in the path of the stop-faces 3|. The arrangement of said counter stop 32 and certain controls therefor, to be described later, may be substantially as used in the Underwood Noiseless typewriter.

Each margin-stop is located by means of a tongue 34, Figure 2, at the lower part of a stem 35 slidably fitted in the body 30 and urged upwardly by a spring 38 to maintain the tongue in one or another of the notches 29. The marginstop L or R is released from the notches 29, for adjustment along the bar 28, by depressing said'35 stem 35.

Each of the margin-stops L and R may have a pair of blocks 38 selectively interposable between its stop-face 3| and the counter-stop 32. For mounting the blocks 38 so that they may be readily 40 shifted transversely for such interposition or withdrawal, they are fitted to a cross-shaft 39, so as to be swingable about the latter. Each block 38 is accordingly curled around said shaft as at 40 for the margin-stop R, and for the margin-stop L one of the blocks 38 is curled about said shaft as at 4|, the other block 38 having two curled portions 42 between which the curled portion 4| is fitted. Thus, the curled portions 42 and 4| for the blocks 38 of the left margin-stop L are ofiset leftward from the lower ends of the blocks 38. This oflsetting affords room for the setting of paragraph-indenting stops 44, 44 and 44 inrequisite proximity to the stop-face 3| and to the blocks 38 of margin-stopL. Said paragraph-indenting stops are locatable along the cross-shaft 39 by means of notches 45 so cut as to form a rectangular section, indicated in Figure 1, to receive the paragraph-indenting stops and point the same in difierent angular directions.

In order that the blocks 38 for each marginstop L or R may move along with the shift of the latter along the bar 28, said blocks 38 are confined edge to .edge and between the stop-face 3| and a lug 41 spaced from said stop-face. The lug 41 forms part of a clip 48 which may be formed, as shown in Figure 1, to slide along the bar 28 and may be extended to abut the outer side of the body 30 of each margin-stop as at 49. This abutment co-operates with the lug 41 in keeping the blocks 38 in abutment with one another edgewise and with the stop-face 3|.

It will be seen now that when both blocks of the margin-stop are swung forwardly to uncover the stop-face 3| for direct engagement of the latter with the counter-stop 32, as in Figure 11, the maximum line-length correlated to the setting of the stops by means of the notches 29 is afforded and the margins at the right and left of the work-sheet 50 will be of the narrowest width.

Referring now to Figure 12, it will be seen that if the bloclns 38 nearest to the stop-faces 3! are interposed between each stop-face 3i and the counter-stop 32, the writing line will be correspondingly shortened to produce side work-sheet margins of medium width, that is, one gradation wider than the margins shown in 'Figure 11. Similarly, the interposition of both blocks 38, as indicated in Figure 13, between each stop-face 3i and the counter-stop 32, will shorten the writing line still more for margin-gradation of maximum width. The margin-stop setting, with reference to the width and position of the worksheet, by means of the notches 29, is the same for Figures 11, 12 and 13. v

For thus interposing or withdrawing the blocks 38, the cross-shaft 39 may be employed. As exemplified in Figures 11, 12 and 13, three margin-width gradations are illustratively provided for, and in such case the shaft 39 is made rotatable to one or another of three different angular positions which may bedetermined by a threeposition detent-block 52, secured to cross-shaft 39, and coacting with a detent-spring 53. The ends of the cross-shaft 39 may be shouldered .in journal-blocks 54 presented by arms 55 of the carriage-side plates 21. A finger-knob 56 for turning the shaft 39 may be outside one of the side plates 21, and may be connected to the shaft 39 by a U-shaped arm 51 which reaches around the carriage-plate arm 55 and is fastened to shaft 39.

In order that the blocks 38 may be shifted for interposal or withdrawal, simultaneously for both margin-stops L and R, and regardless of the location of said stops L'and R lengthwise of thecarriage, the shaft 39 is provided with a blockshifting cross-rod 58 mounted between arms 59 secured to shaft 39. For shifting all the blocks 33 into line with the counter-stop 32, said cross-rod 58 engages the front sides of the stops at points below the cross-shaft 39, as indicated in Figure 1. For a shift of all the blocks 33 in the opposite direction by the rod 58, each stop has a projection 5| above the cross-shaft 39.

Co-operating with the cross-rod 58 to eiiect selective shift of the blocks 38 for each marginstop is a spring 62 arranged, as shown, to constantly urge the blocks 38 of each margin-stop apart rotatively of the cross-shaft 39, as seen in Figure 9. Thus, when the cross-rod 58 is neither in contact with the front sides of the blocks 38 or with their projections 81, as in Figure 9, the spring 82, urging the blocks 38 apart, forces the outer block of the pair forwardly until it abuts the bar 28, and at the same time forces the inner block of the pair rearwardly until it abuts a flange 84 formed for this purpose on the clip 98, said inner block being thereby in interposed position and the outer blockin withdrawn position. The particular relative adjustment of the blocks 38 and stop-faces 3! in Figure 9 corresponds to the diagram at Figurel2, and is productive of a medium width margin represented by the letter M displayed by thetop of the detent-block 52. To

also cause the inner block 38 of each marginstop to be withdrawn for uncovering the stopfaces 3| as in Figure 11, the cross-shaft 39, is rotated clockwise from the Figure 9 position to the Figure '7 position, thereby causing the crossrod 58, through its engagement with the projections SI of the inner blocks 38, to rotate the latter to bring them to the Figure 11, widest line, position as indicated by the letter W then displayed by the detent-block 52. The detent-spring 53 is made strong enough to overcome the block-spring 92 for the purpose of maintaining the inner block 38 in the Figure 11 position.

In the Figure 1 position of the cross-rod 58, produced by turning the cross-shaft39 counterclockwise from the Figure 7 position, said crossrod forces the outer block 38 of each margin-stop rearwardly against the force of the block-spring 52. It will be noted therefore that, in turning the cross-shaft 39 from the Figure 1 position to the Figure 9 position, the outer blocks 38 follow, until stopped by bar 28, the recession of the cross-rod 58, under the urging of the springs 62, the reaction of the latter keeping the inner blocks 38 in line with the counter-stop. Further rotation of the cross-shaft 39, that is, from the Figure 9 position to the Figure 7 position, enables the cross-rod 58 to withdraw the inner blocks by means of the projections iii of the latter. vSince the outer blocks have already been withdrawn through the medium of the block-springs 62, the provision of projections 68 for said outer blocks is optional, as indicated by showing said projec tions in dotted outline, and merely assures withdrawal of said outer blocks by the cross-rod, should said springs 62 lag.

As already stated, the paragraph-indenting stops 94, M and M are set along the crosscorresponding to the positions to which the cross-' shaft 39 is rotated to determine the line-lengths. Thus, when the cross-shaft 99 is rotated to the narrowest width margin-position, the stop-por tion 95 of the line-indenting stop 49 is pointed rearwardly for co-operation with the counterstop 36, as seen in Figure 11, while the stop-portions 65 of the other stops 44 and 44 pointed in other directions, cannot co-operate with said counter-stop 66. Similarly, when the cross-shaft 39 is rotated to the position for medium linelength, the stop-portion 65 of the line-indenting stop 99 will be in effective position, the stopportion 95 of stop 99 being in this case rotated out of eifective position as indicated in Figure 12. Further rotation of the cross-shaft'39 to the Figure 13 position for the narrowest width line causes the stop-portion '65 of the indenting stops M? and M to be rotated out of the way and at the same time causes the stop-portion 95 of the indenting stop it to become effective.

For the conclusion preceding the signature of each letter, a single line-indenting stop 6! may, if desired, be common to the positions of the cross-shaft 39. Said line-indenting stop 61 accordingly has three projections 61* pointing in correspondence to said positions of the cross-shaft 39. It will be seen nowthat upon rotation of the cross-shaft 39 to establish a certain lineiength as in Figure 11, Figure 12 or Figure 13,

there is automatically brought into play a cor-- responding paragraph-indenting stop for co-operation with the tabulating counter-stop B6 and there may also be brought into play a concludingline-indenting stop.

As indicatedin Figure 7, the tabulating 'counter-stop 66 is normally clear of whatever stopportion 65 is presented by the cross-shaft 39 and is brought forward into line with said stop-portion 65 by means of a tabulating key-lever 68, fulcrumed at 69. The means for projecting the tabulating stop 68 forwardly by means of said tabulating key-lever 68 may be substantially as used in the Underwood Noiseless typewriter and from the escapement upon operation of the tabulating key-lever 68, a projection 14 of the bellcrank 10 may be employed as indicated in Figure 7.

For each line-length established as described by rotation of the cross-shaft 39 to one or another position, it is desirable that a line-end signal be given as the carriage comes to a point at the customary distance from the end of the line regardless of whether the line-length is determined by means of the blocks 38 or by the stopface 3| of the line-finish margin-stop R. To this end there is employed for operating a line-end signal-device a finger 16 whose end is disposed: in the path of the stop-face 3| and also in the path of any blocks 38 which may be interposed ahead of said stop-face of margin-stop R. Said finger is swingable by reason of being part of a rod 11 journaled as shown in Figures 1 and 7, and which, reaching downwardly, presents another finger I8 which swings to actuate a bell-striking mechanism upon the one-way displacement of the upperfinger 16 by either an interposed block 38 or by the body 30 forming stop-face 3| of the margin-stop R as the carriage approaches the end of the'line. In the bell-striking mechanism a bell 19 is hit by a striker pivoted upon a brack-,

et 8| which may also journal the lower end of the rod 11. Said bell-striker 80 carries a spring pressed by-pass pawl 82 whereby the swing of the lower finger 18, in passing over and past said pawl, momentarily displaces the striker 80 and then allowsthe same to fall back to ring the bell under the pull of a reverberatory striker-spring 83 as in Figure 5. In the return swing of the lower finger 18 which may take place under the pull of a spring 84 when, in the return of the carriage, the margin-stop R recedes from the upper finger 16, said lower finger 18 is enabled to by-pass the'striker by reason of said pawl 82. Said'spring 84, arranged as shown, normally holds the finger-rod 11, so that the end of the upper finger 16 thereof is in the path of the interposed block 38 and body-portion 39 of the right marginstop R.

In order that a line-end key-lock and key-rev lease may function at the end of a line regardless of how its length is determined by means of the novel line-changing means, the line-finish margin-stop R has been organized preferably so that the counted-stop 32 may co-operate in key-locking and key-releasing. To this end said counter-stop 32 upon the striking thereagainst,

whether by one of the blocks 38 or by the stopcrosswise of the machine.

leftward displacement which maybe utilized for key-locking. V Said displacement, after it has taken place, may be negatived, to release the locked keys for the customary margin-release, by moving the counter-stop 32 rearwardlyjuntil it escapes from the block 38 or from the stop-face 3|.

There may be combined with the novel margin stop R therefore, known means, such as shown, whereby said displacement and. said escape of the counter-stop 32 efiect, respectively, the keylocking and margin-releasing. In accordance with said means the counter-stop 32 extends downwardly and forwardly to swing about a vertical pivot 85 afforded by a block 85 which has a shank 81 pivoting said block and hence the counter-stop 32 to swing about an axis extending The vertical pivoting of the counter-stop 32 at 85 enables the upper end of said counter-stop to be'displaced leftwardly, and the crosswise pivoting by means of said shank 81 of block 86, journaled in machineframework 95, enables the upper end of the counter-stop 32 to be moved rearwardly.

tion indicated by the broken outline, Figure 8, the

counter-stop 32 through the medium of an arm 88 thereof, Figure 1, and a link 89 draws a key-locking bail 9| rearwardly under locking shoulders 92 of thetyping key-levers l5 which are thus locked at'the finish of theline as determined by the margin-stop R. This leftward displacement of the counter-stop 32 is against the pull of a spring 93 which normally keeps the upper end of the counter-stop against an abutment 94 afiorded by the machine-framework 95.

For moving the upper end of the counter-stop 32 rearwardly, as indicated by the broken outline thereof, Figure 7, the shank 81 has an arm 91, Figure 7, articulated to a margin-release keylever 98. Upon depression of saidmargin-release key-lever, the block 86 is turned clockwise of Figure 7, thereby swinging the upper end of the margin-stop 32 rearwardly and enabling it to escape from the margin-stop R, and therefore the counter-stop 32 under the pull of the spring 93 swings rightwardly again as indicated by the full line representing said counter-stop 32 in Figure 8. Upon such escape of the counterstop 32, the key-locking bail 9| moves forwardly to release the key-levers I5, and thereupon the carriage may proceed forward upon further operation of said key-levers l5, since the counterstop 32 remains in the Figure 8,position until, upon the return of the carriage, the margin-stop R recedes therefrom. Upon such recession the margin-counter-stop 32 swings forwardly again to normal position determined as by release keylever 98 and its spring 99. e

The key-locking does not take place until the carriage has traversed the customary number of letter-spaces, after the operation of the lineend signal, as indicated by the full-line position of the signal-operating finger 16, Figure 6, the normal position of said finger being indicated by the broken line. In Figure, 6 the broken outline indicates the key-locking position of the counterstop 32.

An alternative way of organizing the marginstop, so that elements may be interposed ahead of its stop-face, is indicated in Figures 3 and 4, and there is shown only the left margin-stop, since it will be obvious that the right marginstop may be similarly organized.

, aerate l A body-portion ltd of the med marginstop is slidabiy fitted to the notched bar 28 and has below smd bar a plate ii extending side- .wise toward the counter-stop 32.

I wise contact one with the other and the inner withdrawn position.

block in contact with the stop-face E04 by a shoulder'itd of the plate WI.

For, selectively shifting the blocks I83 of both margin-stops into and out of efiective position, there is provided a cross-shaft 901 journaled in the side members 21 of the carriage. Said cross-shaft I01 has splined thereto a pair of cams I08 which co-operate with springs I09, one for each block I03, to shift the latter'as the cross-: shaft I01 is turned to different angular positions. Detent-p'oints H0 in the carriage-side member 21 and a co-operating detent-part III, presented by a shaft-manipulating handle H2, determine said positions of cross-shaft I01. The cams I08 'are' retained between the sides of notches I I4 of the margin-stop plate I'0I which is thus enabled to shift the cams I08 along to the position-the margin-stop is set at by means of the locating notches 29 of bar 28. The crossshaft I01 is preferably on the side of the bar 28 oppositefrom the blocks I03, each of which accordingly has anarm H reaching over said bar 28 to follow the cams I08, see Figure 4.

The cams I00 ,for each margin-stop may be formed and timed, so that in one position of the cross-shaft I01, as indicated in Figure 4 and by the full line position of handle :12, Figure 3,

the block nearest the stop-face I04 will be interposed in front of said stop-face while the other block urged forwardly by its spring I 00 is in v Clockwise rotation of the cross-shaft i0?! to a' point corresponding to the position I52- of the handle, Figure 3, will cause the other block I03 to be interposed by means of its cam 008, the cam for the precedingly' interposed block having the indicated dwell to maintain said preceding block in interposed position. Counter-clockwise rotation of the cross-shaft l0'l from the Figure 4 position to a point corresponding to the position H2 01 the handle,-Figure 3, will cause the block adjacent the stop-face IM to recede under the force of its spring I09, not seen in Figure 4, so that both blocks I03 for each margin-stop will be withdrawn to permit the stop-faces I05 to co-operate with the counterstop 32.

The operation of the invention, referring to the embodiment seen in Figure 1, may he summarized as follows: The work-sheets of uniform width may befpositioned uniformly by means of a sheet-gage H6. The margin-stops L and R are then set along the bar 28 by means of the notches 29, so that, assuming all the blocks 38.

' to be withdrawn, the stop-faces 3! are in position forthe narrowest width margins at the sides of the sheet or, stated in other words, so that the typed line will be. of the widestgradation to be had with that particular setting of the stops L and R, as indicated in Figure 11.

If line-indenting is to be practiced by tabulating, the line-indenting stop M is set upon the cross-shaft 39 at the proper distance from the stop-Jase iii of the left margin-stop. L for-cooperation with counter-stop 06, the cross-shaft 39 being in the angular position corresponding to the narrowest margin. The other line-indenting stops tid and M are similarly located and point- .I-Iinged to] ed with reference to the angulann i lions of the cross-shaft so; and the concluding-lin-indenfiing stop "ti may alsobe set. The stop-mechanism then be readyfor. quick selection of difierentjmargin-widths, namely, the narrowest 5 width margin, Figure 11, the medium width miarv gin, Figure 12, or the widest. width margin, Figpm 13. with corresponding provision for line-indenting. any one of the plurality of margin-v widths thus provided for is made instantly available upon the mere turning of the finger-knob 56 for rotation of shaft 39 toproper position, easily determined by the detent-parts as, as. It will also. be evident from the preceding description that no matter to which position the finger-knob. 58 is turned for margin-width selection, the lineend signal and line-end key-locking means will a function accord with line-length established by such turning of the finger-knob 56. It will also be evident that this turning of the flnger- 2o knob 56 is a simple manipulation and that it effects adjustment of both margin-stops L and R the width and position of a'work-sheet, by means 5 two stops, namely, L and R.

Regarding the modifled'margin-stops shown in Figures 3 and 4, it will be obvious that the operaof the notches 29 only involves the'setting of tion of changing the margin-width is also done 30 by an easily and quickly efiectedmanipuldtion, namely, the mere turning of-the finger-lever o handle I I2 to proper position.

The blocks 38 or I03oi each margin-stop L and R are preferably in edgewise abutment with one another and the block nearest the stop-face M or I04 is in abutment with the latter. By such abutment the stop-face 3| or I 04 buttressesthe blocks to sustain'the shocks they incur in arresting the carriage.

Variations may be resorted towithin the scope 40 I of the invention, and portions of the improveso that in shifting the margin-stop in the'direction of carriage travel, said element may be correspondingly shifted.

2. In a typewriting machine, a margin-stop adjustable to different positions lengthwise of the carriage for gaging the finish of a line withref- -erenceto a certain width and position of a worksheet, a counter-stop, said margin-stop having means affording a pluralityof selectable stop face positions at diiferent distances from the counter-stop to selectively gage the marginwidth of the work-sheet, and-a member operable by the margin-stop to signal the approach. of the carriage to the end of a line, said stop-face means arranged to operate said signal-member at substantially uniform distances from the ends of the diiferent lines established by said means.

3. In a margin-stop device for a typewritercarriage, the combination with a margin-stop having a stop-face co-operative with a counterstop and adjustable lengthwise of the carriage Q to gage the finish of lines of variable length, of

riage, and an element arranged so as to be selecail-element mounted for selective interposition between said stop-face and counter-stop, to thereby vary the line-length without readjusting the margin-stop lengthwise of the carriage, said element and the mounting thereof being arranged so that in shifting the margin-stop lengthwise of the carriage, said element is correspondingly carried along, and a member operable to signal the approach of the carriage to the end of a line, said member operable by said interposable element, or by said margin-stop directly, whereby the signal is given at predetermined distances from the ends of the lines established respectively by said element and said stopface.

4. In a margin-stop device for a typewritercarriage; a margin-stop locatable in different positionslengthwise of the carriage, and having a stop-face for co-operation with a counter-stop, a plurality of additional stop-elements disposed serially lengthwise of the carriage, and means mounting said additional stop-elements independently of the margin-stop for selective interposal between said stop-face and counter-stop to change the line-length without relocating the margin-stop, said elements and the mounting thereof being arranged so that said elements may be shifted lengthwise of the carriage for collective disposal in correspondence with the location of the margin-stop.

5. In a margin-stop device for a typewriter carriage, the combination with a margin-stop variably locatable lengthwise of the carriage, and having a stop-face co-operative with a counterstop, of a shaft extending lengthwise of the cartively interposed or withdrawn between or from between said stop-face and counter-stop by rotation of said shaft to one or another angular position, to thereby selectively and quicklychange' the margin-width without relocating said margin-stop, said element being shiftable lengthwise of the carriage in correspondence with the location of the margin-stop and being controllable by said shaft in any location.

. 6. In a margin-stop device for a typewritercarriage, the combination with a margin-stop variably locatable lengthwise of the carriage, and having a stop-face co-operative with a counterstop, of a shaft extending lengthwise of the carriage, an element arranged so as tobe selectively interposed or withdrawn between or from between said stop-face and counter-stop by rotation of said shaft to one or another angular position, to thereby selectively and quickly change the mar.- gin-width without relocating said margin-stop, said element being shiftable lengthwise of the carriage in correspondence with the location of the margin-stop and being controllable by said shaft in any location, said margin-stop serving to gage the beginning of a line, and line-indenting carriage-tabulating stops auxiliary to said margin-stop and element and automatically set by said shaft-rotation in correspondence with the selected margin-width.

7. In a margin-stop device for a typewritercarriage, the combination with a pair of left and right margin-stops locatable in different positions lengthwise of the carriage, accordingto the width of a work-sheet, each margin-stop having a stopface co-operative with a counter-stop, of a shaft extending lengthwise of the carriage, and an individual interponent mounted to swing into and out of line with the stop-face of each marginstop and the counter-stop to thereby vary the line-length, saidshaft having means whereby, upon its rotation to one or another position, it so swings said interponent for both margin-stops simultaneously, so as to change the margins at both sides of the work-sheet simultaneously, each interponent being shiftable lengthwise of the earriage in correspondence with the location of its margin-stop.

8. The invention as set forth in claim 7, each interponent being coupled to its margin-stop so as to be shiftable along therewith lengthwise of the carriage.

9. In a marginstop device for a typewritercarriage, the combination with a margin-stop variably locatable lengthwise of the carriage, and

having a stop-face co-operative with a counterment for said interposition or withdrawal, in any position of the margin-stop.

10. In a margin-stop device for a typewritercarriage, the combination with a margin-stop variably locatable lengthwise of the carriage, and having a stop-face co-operative with a counterstop, of a shaft extending lengthwise of the carriage in juxtaposition to said margin-stopyand an element swingable on said shaft for interposition or'withdrawal, between or from between said stop-face and counter-stop, to thereby change the line-length without relocating said marginstop, said element slidable along said' shaft and coupled to said margin-stop, so as to serve in any location of the latter, said shaft having means whereby, upon its rotation to one or another angular position, it swings said element for said interposition or withdrawal in any position of the margin-stop.

11. Inc. margin-stop device for a typewritercarriage, the combination with a margin-stop variably locatable lengthwise of the carriage, and

having a stop-face co-operative with a counterstop, of a shaft extending lengthwise of the carriage in juxtaposition to said margin-stop, an

element swingable on said shaft for interposition or withdrawal; between or,from between said stop-face and counter-stop, to thereby change the line-length without; relocating said marginstop, said element 'slidable along said shaft and coupled to said margin-stop, so as to serve in any location of the latter, said shaft having means whereby, upon its rotation to one or another angular position, it swings said element for said interposition or withdrawal in any position of the margin-stop, said margin-sic! gaging the beginning of a typed line, and carriage-tabulating means conditionable by the rotation of said shaft to one or another position, for indenting the line in accordance with whether said line is determined by said element or said stop-face.

12. In a margin-stop device for a typewritercarriage, the combination with a margin-stop variably locatable lengthwise of the carriage, and having a stop-face co-operative with a counterstop, of a shaft extending lengthwise of the carriage in juxtaposition to said margin-stop, an element swingable on said shaft for interposition stop, said element slidable along said shaft and coupled to said margin-stop, so as to serve in any location of the latter,- said shaft having means whereby, upon its rotation to one or another angular position, it swings said element for said interposition or withdrawal in any position of the margin-stop, said margin-stop gaging the beginning of a typed line, and a pair of tabulating stops settable along said shaft for indenting the line and co-operative with a tabulating counterstop, said tabulating stops pointed in directions corresponding to the degree of rotation of said shaft, so that the proper tabulating stop co-operates with the tabulating counter-stop when the interposed element is used, and the other tabulatiug stop so co-operates when said stop-face is used.

13. In a margin-stop device for a typewritercarriage, the combination with a margin-stop having a stop-face co-operative with a counterstop, of a pair of additional stop-face-forming elements spaced lengthwise of the carriage, one" ahead,of the other, and both ahead of said first stop-face, said elements mounted to swing into and out of line with said counter-stop, and a spring tending to swing said elements apart, so that the element nearest said first stop-face tends to be in line with said counter-stop, and the element farthest from said first stop-face tends to be out of line with said counter-stop, means being provided to force said farthest element into line with said counter-stop, or to force said nearest element out of line with said counter-stop at will, whereby the line-length may be changed without relocating the margin-stop lengthwise of the carriage.

14. In a margin-stop device for a typewritercarr iage, the combination with a margin-stop having a stop-face co-operative with a counterstop, of a shaft extending lengthwise of the carriage, a pair of additional stop-face-forming elements spaced lengthwise of the carriage, one ahead of the other, and both ahead of said first stop-face, said elements swingable on said shaft, and a spring tending to swing said elements apart, so that the element nearest said first stopface tends to be in line with said counter-stop, and the element farthestfrom said first stop-face tends to beout of line with said counter-stop, said shaft having means whereby, upon its rotation to one position, it forces said farthest element into line with said counter-stop, and, upon rotation to another position, it forces the nearest element out of line with said counter-stop, said means arranged so that, in still anotherposition of said shaft, said elements swing apart as aforesaid, whereby the line-length may be changed without relocating the margin-stop lengthwise of the carriage.

15. The invention as set forth in claim 14, said elements being coupled to said margin-stop, so that they are carried along when the margin-stop is relocated lengthwise of the carriage, said elements being slidable along said shaft.

16. In a margin-stop device for a typewritercarriage, the combination with a margin-stop variably locatable lengthwise of the carriage, and having .a stop-face cooperative with a counterstop, of a shaft extending lengthwise of the carriage in juxtaposition to said margin-stop, an element mounted on said margin-stop for interposition or withdrawal, between or from between cam.

said stop-face and counter-stop, ta thereby change the line-length without relocating said margin-stop, and a cam on said shaft, enabling the latter, by rotation to one position or another,

to swing said element for said interposition or withdrawal, said cam-splined to said shaft and slidable therealong by said margin-stop, so as to servein any position of the latter.

17. In a margin-stopdevice for a typewritercarriage, the combinationwith a margin-stop l0 variably locatable lengthwise of the carriage, and having a stop-face cooperative with a counterstop, of a shaft extending lengthwise of the carriage in juxtaposition to said margin-stop, a pair of additional stop-face elements mounted on said margin-stop, one ahead of the other, and both ahead of said first stop-face, for interposition or withdrawal, between or from between said first stop-face and the counter-stop, for changing the line-length without relocating the margin-stop, and a pair of cams, for controlling said elements, on said shaft, whereby the swing of said shaft to one or another of three different positions causes, respective-y, both elements to 'be withdrawn, or the element farthest from said first stop-face to be interposed, or said farthest element to be withdrawn and concomitantly the element nearest said firststop-face to be interposed, said cams splined to said shaft and slidable therealong by said margin-stop, so as to serve in any position of the latter. v

18. The invention as setaforth in claim 16, said margin-stop being locatable along a bar, said stop-face being adjacent one side of said bar togather with a portion of said element for cooperation of either with said counter-stop, said shaft being at the opposite side of said bar to clear said counter-stop, said element having a finger reaching around said bar for following said 19. The combination with a traveling typewriter-carriage, of a primary margin-stop settable to different locations along the range of carriage travel in accordance with a certain width and position of work-sheet, a cooperative counter-stop, a plurality of secondary margin-stops mounted for movement transverse of the primary margin-stop, so as to be selectively interposable between the primary margin-stop and said counter-stop, to determine one or another of a plurality of graded margin-widths diiferentfrom the margin-width determined by the primary margin-stop, the mounting means for the secondary stops being arranged to render said sec-' ondary stops also settable to said locations, a

manually-settable margin-regulator, and means whereby the setting of said regu ator to one position determines non-interposal of the secondary stops, andwhereby setting of said regulator to other positions determines differential'interposal of said secondary stops.

20.,The combination with a traveling typewriter-carriage, of a pair of primary marginstcps, left and right, settable at different locations alongthe range of carriage travel, a cooperative counter-stop device, a plurality of secondary margin-stops associated with each primary margin-stop, said secondary margin-stops mounted formovement transverse of the primary margin-stops, so as to be selectively interposable between the primary margin-stops and said counter-stop device to determine one or another of a plurality of graded margin-widths difierent from the margin-width determined by each primary margin-stop, and means for selectively interposingor withdrawing the secondary margin-stops simultaneously with respect to both primary margin-stops.

21. In a margin-stop device for a typewritercarriage, the combination with a margin-stop having a stop-face cooperative with a counterstop and adjustable in the direction of carriage travel, of an element mounted independently of the margin-stop for selective interposition or withdrawal, between or from between said stopface and counter-stop, to therebyyary the linelength without readjusting the margin-stop,.said

element and the mounting thereof being arranged so that in shifting the margin-stop in the direction of carriage travel, said element may be correspondingly shifted, means being provided whereby said margin-stop and element are coupled for such joint shifting in the direction of carriage travel.

22. In a typewriting machine having a carriage, the combination of a margin-stop device presenting a plurality of stop-faces selectively usable in cooperation with a counter-stop for varying the margin-width, a tabulating-stop device callable into use after the arrest of the carriage by any one of said stop-faces of said margin-stop device to indent a line with reference to the margin established by said one stop-face, and means operatively conjoining said margin-stop and tabulating-stop devices whereby the selection of one or another of said margin-stop faces for use will automatically effect a corresponding positioning of a line-indenting tabulating stop. 1

23. In a typewriting machine, the combination with a carriage, of a plurality of tabulating stops, counter-stop means therefor, a margin-stop device having -a plurality of stop-elements selectively usable to determine different marginwidths, means mounting said tabulating stops in spaced relation, in the direction of carriage travel,

to corresponding ones of said margin-stop elements, said tabulating-stop-mounting means adjustable for selectively rendering one or another of the tabulating stops co-operative with the counter-stop means, and means whereby such adjustment of the tabulating-stop-mounting means calls into use a corresponding one of said margin-stop elements.

24. In a typewriting machine, the combination with a carriage, of a plurality of tabulating stops, counter-stop means therefor, a margin-stop device having a plurality of stop-elements selectively usable to determine diflerent margin-widths, means mounting said tabulating stops in spaced relation, in the direction of carriage travel, to corresponding ones of said margin-stop elements, said tabulating-stop-mounting meansadjustable for selectively rendering one or another of the tabulating stops co-operative with the counterstop means, and means whereby such adjustment of the tabulating-stop-mounting means calls into use a corresponding one of said margin-stop elements, said margin-stop device and said tabulating stops being independently adjustable in the direction of carriage travel.

25. In a typewriter having a letter-feeding carriage, a margin-stop device having a pluralityof stop-elements, means mounting said stop-elements and connecting same for location as a unit along the range of carriage travel in accordance with a primary line-length, said stop-elements being relatively adjustable and suiilcient in number to provide for a plurality of line-lengths other than said primary line-length, a line-length regulator manually settable in a plurality of positions, and means whereby the setting of said regulator in one position efiects relative adjustment of said stop-elements to determine said primary line-length, and whereby the setting of said same regulator to other positions effects other relative 5 adjustments of said stop-elements to determine said other line-lengths.

26. In a typewriting, machine having a carriage, the combination with a primary margin-stop differentially locatable along the range of carriage travel and co-operative with a counter-stop, of secondary stop-means diiferentially interposable between said primary margin-stop and counterstop at any location of the primary margin-stop, a manually-settable margin-regulator, and means operatively connecting said regulator and secondary stop-means whereby the setting of said regulator in one position determines non-interposal of said secondary means to render the primary margin-stop effective to determine a primary linelength, and whereby the setting of said same regulator in one or another of a plurality of other positions determines differential interposal of said secondary stop-means to render the latter differentially eifective to determine a plurality of line-length gradations differing from said primary line-length.

27. In a typewriting machine having a letterfeeding carriage, a margin-stop device for the carriage, co-operative with a counter-stop, said margin-stop device including a primary marginstop co-operative with the counter-stop for a maximum line-length, and a plurality of secondary margin-stops disposable seriatim ahead of said primary stop for determining shorter linelengths, a margin-regulator manually settable in different positions indicative of the line-lengths, and means whereby the setting of said marginregulator in one of said positions relatively arranges said stops to render the primary marginstop effective, and whereby the setting of said same margin-regulator to one or another of a plurality of other positions renders one or another of the secondary stops effective.

28. In a typewriting machine having a letterfeeding carriage, a margin-stop device for the carriage, co-operative with a counter-stop, said margin-stop device including a primary marginstop co-operative with the counter-stop for a maximum line-length, and a plurality of secondary margin-stops disposable seriatim ahead of said primary stop for determining shorter line-' I means differentially adjustable to correspond with the difierent line-lengths, said margin-regulator and paragraphing stop-means being operatively connected whereby, upon setting of the marginregulator in one or another of its positions, the

paragraphing stop-means are concurrently adjusted.

29. In a typewriting' machine having a letterfeeding carriage, the combination of a complement of carriage-arresting margin-stops selective for variably determining the beginning of a line, a similar complement of margin-stops selecmomma 9 tive for variably determining the end of a line, co-operative counter-stop means, said marginstops being mounted so that each complement is shiftable as a unit in the direction of carriage travel in accordance with the width of a worksheet, each complement including a plurality of stops determinative respectively of minimum, maximum and intermediate IineJengths, a margin-regulator settable in diiiferent positions respectively indicative of said minimum, maximum and intermediate line-lengths, and means whereby the setting of said regulator in said positions relatively arranges the stops in each complement a to predetermine said minimum, maximum or intermediate line-lengths.

- A. B. SMITH.