US2131150A - Typewriting machine - Google Patents

Description

Sept. 27, 1938. J. A. B. SMITH 2, 3 ,150

TYPEWRITING MACHINE Filed Nov. 15, 1935 3 sheets sheet 1 INVE R cczn I xxxxx Sept. 27, 1938. A B SMITH I 2,131,150

TYPEWRITING MACHINE Filed Nov. 15, 1935 5 She ets-Sheet 2 INVENTOP Patented Sept. 27, 1938 UNITED STATES PATENT oFF cEi: E

TYPEWRITING MACHINE Jesse A. B. Smith, Stamford, 051111., assignor. to Underwood Elliott Fisher Company, New York, N. Y., a corporation of Delaware Application November 15, 1935, Serial No. 19,863 24 Claims. (01. 197,63)

duce work of pleasing appearance, and auto-- matically coacting means which will establish definite positions, best suited tothe writing linelength selected, for the indentations referred to. One feature of theinvention combines tabulished for tabulating purposes, do not conflict with, or necessitate a readjustment of, the stops used for correspondence indentations, making it possible to write tabulated or statistical matter '20 on a machine generally used for correspondence.

This improvement is comparatvely simple and is readily adjustable. The operator is enabled to change from a long writing line to a' short one by the simple expedient of turning a knob, and to locate the intermediate indented portions of a letter uniformly, by merely pressing a tabulator-key. The positions of the various sections of the letter are thus uniformly maintained without special effort or skill on the part of the operator, resultingin improved Work and saving in time.

Experience has indicated that for general correspondence, a selection of three writing linelengths will be sufficient, and that fixed indenta- ,35 tions may be established to suit the writing line- .40 that the rotation of one of the racks will rotate the other. The cross-section of these racks may be square, so as to provide four operative positions, or there may be other suitable cross-section. On both of these racks, letter-spaced notches are cut on all four surfaces, over "the entire effective length. On the upper or margin rack, four pairs of margin-stops may be adjustably attached to establish the various line-lengths and corresponding margin-widths required. The lower or tabulating rack is preferably connected by a chain belt to the margin-rack. For each set of margin-stops on the margin-rack,f.a" corresponding set of two or more stops may be pro.- vided on the tabulating rack. The relation-between the respective sets of tabulating rack and columns or t'abular;positions required lating means, in which the stops, when estabrack stops;

margin-rack stops being kept constant by the synchronizing means, uniform positions of the indented portions of the typewriting, regardless o'f the line-length used,'are automatically established. One or more of the sets of stops on the margin-rack and the corresponding setsof stops on the tabulating rack may be used to co-operate in tabu'lating, in order to provide the number of for the class of work tolbeperformed.

' A counter-stop may be provided to successive] engage one-pair ofmargin stops in the conventional manner. The stops on the lower or tabulator rack may be engaged by a set of tabulator counter-stops, each of which isactuated by a separate -tabul ator-key,' or tWoor more of the tabulator-stops maybe actuated by one tabulator-key and counter-stop. I

A change to a'shor't or longer line-length may thus be effected by' rotating the margin shaft.

'with itseorresponding stops to one" of the other operative positions," bringing a selected set o-f margin stops .and the corresponding'set of tab-' 7 ulator-stops into their operative positions. a 'Regardless "of the line-length utilized by the operator or of the changes in line-length made tinue to function in the normal manner.

" The line-end margin counter-stop preferablyactuates the conventional type of line-end-ke'y' lock, as well as the conventional type'of line-end signal, by means of a suitable mechanism which may be provided. v a

Other features and advantages will herein after appear.

In the'accompanying drawings,

' Figure 1' is a fragmentary, perspective View of the typewriting machine, showing the margin and tabulator racks and the interconnecting -'means', and the coordinationlof the line-endsignalidevice; key-lock and tabulato'r-keys;

Figurev 2 is-aiperspective of one of the margin- Eigure 3 represents a typical typewritten letter, in. diagrammatic form, showing an intermediate line-length,

Figure 4'is a side elevation form of tabulato-rrack stop in position. in the rack.

-Figure 5 is .a side elvation ofanother. form of tabulator-rack stop in position in the rack. Figure 6 is an elevation of theright-hand car- Figure 7 is an elevation, partially in section, of the machine of-Figure 1. a I .5

Figure 12 illustrates the margin-counter-ston in inoperative position.

The detailed arrangement of the invention, as incorporated in a typewriter of the noiseless class, may be as follows:

Two racks 25 and 26,

28 of a laterally slidable carriage 3U behind a revoluble platen 3| of a typewriting machine. Letter-spaced notches 32 are cut overthe effective length of the racks 25, 26 onall four surfaces thereof. r

A sprocket-wheel 33, with an attached control knob 34 for manual rotation, is preferably attached to one end of the upper or margin rack 25, and a similar sprocket-wheel 35, having the same number of teeth, is attached to the lower or tabulating rack'26. A chain 36, or suitable gearing, may be utilized to drive the lower sprocket from the upper sprocket 33, thussynchronizing the two racks. Foursets of pronged marginstops 31, 38, 33'and 40 are preferably slid ably fitted into the notches 32 of the margin-rack 25,

with the heads 4| of each set of stops disposed in a separate quadrant. The left and right stops of a set 40, for example, respectively determine the left and right ends ,of .ap-redetermined shortest writing line length. Eachstop of a set may be located equidistantly from the center of the 'machine or, at varying distances from the center;

and each succeeding set may be increasingly separated so that the four sets provide four selections of writing line-length,and corresponding margin-widths under the control of the operator.

The heads 4| of the marginal rack-stops 31 to 40, inclusive, are inclined, as indicated in Figure 2, to provide a camming surface for a purpose later described. The prongs 42 of the stops closely engage the sides and roots of thenotches 32. A spring detent 43, having a peak 44 arranged to engage a corner of the notch into which the-stop may be fitted, as shown in Figure 5, may be attached to the head 4| for yieldably locking the line-width, and the tabulating stops, designated by symbols 48 48 48, 48 etc., ofanyrequired number, gaging the various column positions.

The stops to. 48, inclusive, are. similar in design to the margin-rack stops 31 to 40, inclusive, with -the exception that the heads 4| are clined, as shown in FigureS. v

When two or more stops on difierentsurfaces 'of rack 2B are to have the heads 4| in the same lateral position with respects-to the center of the' Figure '1, of square or other suitable cross-section are each rotatably mounted, preferably on the carriage ends Z-I and notinmachine, a multiple stop 49, Figure 4, having two or more heads located at right angles to each other, may be utilized. The spring detent 43 may be used with this stop also, to retain said stop on the rack 26.

The operator establishes the various writing line-lengths desired, so as, for example, to centrally locate short, medium and long-line letters on standard size stationery, by locating the marginal stops 31 to 40 in rack 25 with relation to the usual side-gage 5|) on paper-table 55 Figure '7, and the usual line-scale 50 The marginstops for the left-hand margin are placed with their heads 4| inclining to the right; those for the right-hand margin having their heads incliningleftwardly.

The indentations for date line, paragraph and signature lines are similarly established by positioning "the stops on rack 26. The margin and the indenting or tabulating stop positions, once having been established, may be left undisturbed knob 34 is rotated by the operator. until the desired set of stops, as 40, is brought into operative position, that is, with the heads 4| facing rearwardly. For convenience, a symbol 5|, identifying the stops in their operative positions, may be 30 located on the circumference of the knob 34.

The line-length-changing rotation of the shaft 25 causes a simultaneous rotation-of shaft 26, and

thus brings such stops 45, 46, or 41, into operative position as are appropriate for the indentations, such as paragraph, date and Salutation lines, for

the new line-length.

A spring-detent .52, or other suitable locking mechanism, fastened preferably to the left carriage-end 21 and having an extended spring-arm 53., is preferably held in engagement with one of the faces of the margin-rack 25, thus retaining the rack and the corresponding set of margin and 'tabulator stops in the selected operative positions.

A margin-counter-stop 54, is usually located at the center of the machine, between the stop-faces of the operative margin-stops, as 40, in Figure 1,

tocontrol the lateral movement of the carriage in both directions.

The detailed arrangement of the margin counter-stop and the controls therefor as later decarriage moving in the letter-feeding-direction until the end of the line is reached, when theface of the counter-stop 54 engages the corresponding right margin-stop 40, limiting the line-length and the margin-width.

When 'a deeply indented line, i. e., R, Figure '8, is to be typed, the operator repeatedly depresses a, tabulator-key 51 which is operatively connected to a tabulator counter-stop 58 located near the center of the machine, A spring-motor 56, Figure 7, draws the carriage leftwardly, in

. the usual manner, the carriage having been freed of its normal, letter-space movement as later described, until the head 4| of the right-hand stop 4l engages the tabulator-stop 58, the top ofwhich is brought forward by depressing the tabulator-key 51, thus arresting the movement of the carriage. The typewriting is-begun atlthis point, and proceeds until the edge 4 of the right margin-stop engages the margin counterstop 54, thus determining. the right line-end. When a paragraph-indentation is reached, as indicated in Figure 8, the operator depresses the tabulator-key 51 until the carriage in its leftward movement bringsthe left-hand'stop 41 into engagement with the tabulator counter-stop58. When an intermediate indentation, i; e., tabulation P, Figure 8 is reached, the tabulator-key 51 is repeatedly depressed until the appropriate intermediate stop engages the tabulator counterstop 58. The number of line-indenting stops provided at each operative position of shaft 26 depends upon the number of recurring indentations encountered in the class of work to be performed and may be varied. i v When a longer line-length, as in-Figure 10, is desired, the operator rotates the knob 34 until the selected set of margin-stops, i. e., 38 on the margin-shaft 25 and the corresponding lineindenting stops, as on the tabulatorj-shaft 25, are in the operative position. l

For any indentation or line-start that may be the same for each line-length, as the signatureline of each letter, the multiple-faced stop 49 may, if desired, be common to three positionsof the line-indenting or tabulator-rack 28. Said multiple stop 49, as indicated in Figure 4, has three heads 4| respectively perpendicular to the corresponding faces of the tabulator-shaft.

- One of the sets of margin-stops, as' 31, and the corresponding set of tabulator-stops 48 48 48, etc., may be arranged' t'o co-operate with the usual denominational tabular keys 51, 59, 88, 62, 64, on the machine'keybOard for tabulating' or statistical work, a sample of which is indicated in Figure 9. The knob 34 is rotated until the identification symbol 5| indicates that the stops 3! on the margin-shaft and the corresponding tabulator-stops on the tabulator-shaftare in their operative positions. The left margin-stop 31 operates to establish the left margin in the manner previously described with reference to stop 40. When tabulation at column A, Figure 9,' i s desired, the appropriate tabulator-key, for instance 60, Figures 1 and 7, is depressed, bringing the top of a tabulator counter-stop BI forwardly into the path of the tabulator-stop 48 on tabulator-rack 28. The carriage travels leftwardly until it-is arrested by the engagement of tabulator counter-stop 6| with tabulator-stop 48*, as previously described, thus establishing the column and the correct denominational position of the work. For column C, tabulator-key, say 62, is depressed','similarly bringing the operative end of counter-stop 63 forward intoengagement with tabulator-stop 48. Other columns, as D, may similarly be established by depressing the'appropriate tabulator-key, to establish the column position on the work-sheet and the correctdenominational position of the typing by the engagement of the associated counter-stop with one of the other marginal stops ,48 48 etc.

In the type-actionffragmentarily indicated in Figures 1 and '7, when a character key 65 is depressed, its associatedkeyf-lever 51 drives a type-carrier as throughi-a linkage89 toward the platen 3|, mounted in the carriage 30. A'letterfeed' rack H on the carriage mesheswith a pinion l2, ='ooupled, as" shown in "Figured, "by a shaft 13 to an escapement-wheel 14 at the bottom of the shaft, saidwheel co operating with a typekey controllable dog-rocker 15- 'and the springchine-frame I6. "tabulator-counter-stop 6| forwardly by the acclearof whatever tabulator-rack-stops are" in their operative positions at the time. The operative end of any counter-stop, 6| for example, is brought forward into the path of the tabulator- :rack-stops by means of a tabulator-key lever H,

Figure 7, fulcrumed on a shaftv I8 to the ma- The means for projecting the tion .of the tabulator-key 60, and the'means for controlling the carriage movement may be substantially as used in the Underwood Noiseless typewriter, and may therefore be briefly de-v scribed as follows: H

Whenthe tabulator-key- 88 is depressed, the rear end 88 of the key-lever T1 raises the rounded base 8| of the tabulator-counter-stop 6l, and,

way 19 and a diagonally cut slot 82 in the-counterstop6l, which slidably engagesa pin 83 fixedly mounted-on the carriage-frame extension 84, causes the counter-stop 6| to move forwardly,

bringing the top of it into the path of any of the tabulator-rack-stops in operative positionb A spring 85, connecting an arm 88 of the tabulatorcounter-stop to a pin 81, fixedly mounted on the extension 84 of the carriage-frame, by means of a hook 88, returns the tabulator-counter-stop rearwardlyto its original position, outof line with the tabulator-stops,"when the tabulator-key is again released. 1 i

Depressing any one of the tabulator-keys releases the carriage-feed, and allows'the springmotor 56 to move the carriage leftwardly until one'of the tabulator-stops in the operative position, as 48*, engages the tabulator-counter-stop moved into its operative position by said key.

When'the tabulator-counter-stop, as'6 I, is moved forwardly by the tabulator-key lever 11 aspreviously described, the arm 86 of the tabulatorcounter-stop causes a cross-bar 9|, Figure 1, which is attached by arms 92 to a shaft 93 journaled in the frame 84, to rotate upwardly.

'An extension 94 attached to said cross-bar and pivotally connected, as at 95,'to a lever 96, urges said lever downwardly, rotating a link 91, pivotally mounted at 98 to the frame,'and articulated to the lever 96, forwardly. The front edge 99 of said link engages a finger I02 on a dog I89 pivot ally mounted on the dog-rocker 15, Figure 1, rotating said dog out of engagement with the teeth l83'of the escapement-wheel l4, permitting the carriage to move freely, a companion dog I0! being also out of engagement with wheel l4.

-Upon releasing the tabulatorekey 88, the tabulator-counter-stop returns to its original position. A spring I84, attached to the rear end of the link 91, rotates the link rearwardly about its pivot 98, the releasing finger I82 on the-dog I98 allowing a spring I to restore said dog into engagement with the teeth I03 of the escapementwheel, thus arresting the movement of the car 'riage; r 1

For each line-length established as described,

by rotation of themargin rack 25 to 'oneof its operative positions, it is" desirable that a line-end signal be given as the carriagereachesa point the customary distance from .the end of theline.

through the intermediary of the sloping g'uide- Tothis end, there is employed, a finger; l06,- the nal device. .The finger is a forwardly bent portion of a rod I01 which is swingably journaled in two brackets I08 and I09, as'indicated in Figures 1 and 7, a collar H19 supporting the rod on bracket I09. The bottom end of rod IIl'I terminates in a striker IIO, which coacts with a bell II I to sound the line-end signal. Whenthe margin-stop 40 engages the finger I06, near the line-end, the rod I01 is leftwardly rotated through a' small angle, a spring I I2, attached to an extension'of the rod I01, resisting said rotational movement. When the finger I06 is disengaged from the stop 40, the tension of the spring I I 2 causes the rod to sharply return to its normal position, the striker IIO sounding the bell 'I I I.

In order that a line-end key-lock and key-release may function when the carriage has traversed the usual number of letter-spaces after the line-end-signal, as indicated in Figure 3, regardless of the line-length as determined by the margin-control mechanism, the margin-counter-stop 54, Figure 1, is preferably arranged to co-operate in the key-locking and key-releasing. Whenthe right margin-stop 40 contacts the face, 55 of the margin-counter-stop 54, it imparts a limited leftward displacementto the counter-stop which may be used for key-locking as indicated in Figure l. Said displacement after it has taken place may be negatived to release the locked keys for the customary margin-release by moving the counterstop 54 rearwardly until it is out of range of the margin-stop 40. s

The margin-control mechanism may therefore be combined with known means as shown,'whereby the displacement and escape of the'counterstop 54 effect respectively the key-locking and margin-release. The counter-stop 54 is supported by a vertical arm I I3, the bottom of which terminates in a bracket I I4, formed with a shelf I I which is pivotally suspended, by means of a vertical pin I I6, to a block I II, to which a shank I I8 is attached. This vertical pivoting of the margincounter-stop-support I I3 enables the counterstop 54 and its associated bracket I I4 to be rotated leftwardly about pin H6, and the crosswise pivoting of the block I II, by means of the shank I I8, journaled in the machine-framework I6, enables the upper end of the counter-stop 54 to be moved rearwardly.

In its leftward displacement, by means of stop 40, to a position indicated by the dotted line, Figure 1, the counter-stop 54, through the medium of an arm I26, attached to the bracket I I4,-and a link I21, draws a key-locking bail I28 rearwardly under locking shoulders I29 of the typing keylevers 6'I, thus locking the keys at the completion of a line as determined by the right margin-stop 40. This leftward displacement of the counterstop 54 is against the pull of. a spring I30, which normally retains the face 55 of the counter-stop against an abutment I3I afiorded by the machineframework I6. i I

Where it is desired to extend the writing-line beyond the limit established by the right-hand margin-stop 40, a margin-release key I20 on the keyboard is depressed, actuating key-lever I2I which is pivotally mounted on a pin I22, raising a yoke I23'at the opposite end of the lever. An arm I24 of the shank II8, slidably fitted in the yoke I23, oausesthe block II! to turn clockwise of Figure 7, about the shank I I8, thus, by swingingthe arm I I3 rearwardly, carrying the counterstop 54 back, out of engagement with the margin- 7and12.

Upon the escape of the counter-stop 54 from the margin-stop 40, "the key-locking bail I28 moves forwardly to release the key-levers 61, since, by the tension of spring I30, the bracket II4 will move about pin II Gso as to rotate the arm I26 forwardly.

Upon the release of the key I 20, a spring I25 raises the lever I2I toits normal position, bringing the-margin-counter-stop 54 forwardly into its operative position. The typing may then proceed in normal fashion to finish the line.

On the rightward return of the carriage to begin a new writing line, thesloping head M of the right margin-stop 40. acts as a cam, and enables said stop to-pass thecounter-stop 54 without againpressing the key I20, as shown in Figures l1and12. p

It will be understood that the left-hand marginstop 40 could be similarly rendered impotent to establish the left-hand margin,'should it be found desirable to insert typewritten marginal notations.

Any pairfof margin-stops on the margin-rack and the corresponding set of stops on the ta'bulator-rack operate in the same manner with relation to the counter-stop 54, the tabulatormounted on said carriage, means synchronizing the rotation of said shafts, margin-stops mounted on one of said shafts for limiting the lateral movement of said carriage, a plurality of intermediate stops adjustably mounted lengthwise of the carriage on the other of said shafts, and means operatively engaging said intermediate stops for determining the intermediate positions of said carriage.

. 2. In a margin-stop" device for a typewriter carriage, the combination with a pair of multifaced shafts individually journalled in said carriage, and a mechanism synchronizing the rotation of said shaftsQof pairs of margin-stops adjustably mounted on one of said shafts, a counterstop for operatively engaging said margin-stops for limiting the lateral movement of said carriage, a plurality of intermediate stops adjustably mounted on the other of said shafts, and means operatively engaging said intermediate stops for determining intermediate carriage positions. I

3. In a margin-stop device for a typewritercarriage, the combination with a pair of multifaced shafts rotatably mounted on said carriage, and gearing synchronizing the rotation of said shafts, of means rotating said shafts into their operative positions, instrumentalities mounted on one of said shafts for limiting the lateral movement of saidcarriage, a plurality of intermediate stops adjustably mounted on'the other of said shafts, locatable in different positions lengthwise of said carriage, and a plurality of counter-stops operatively engaging said intermediate stops for determining intermediatecarriage locations.

4;. In a typewritingmachine having a laterally movable carriage, a pairof multi-faced stopracks rotatably mounted on said carriage, means synchronizing the rotation of said racks, pairs of margin-stops adjustable lengthwise of said carriage, mounted on'one-iof saidracks, a plurality of intermediate stops adjustably mounted on the other of said racks, a counter-stop operatively engaging said margin-stops for determining the lateral movement of said carriage, instrumentalities operatively engaging said intermediate stops for determining the intermediate locations of said carriage, and means for manually rotating said shafts into their operative positions. a

5. In a margin-stop device for a typewritercarriage, the combination with a pair of multifaced stop-racks rotatably mounted onsaid'carriage, and means synchronizing the rotation of said racks, of pairs of margin-stops adjustably mounted on one of said racks, a counter-stop interposed between said margin-stops, operatively engaging said stops, for determining the lateral movement of said carriage, a plurality of intermediate stops adjustably mounted onthe other of said racks, means operatively engaging said intermediate stops for determining the intermediate locations of said carriage, and-a knob mounted on one of said shafts for rotating said shafts into their operative positions.

6. In a margin-stop device for a typewritercarriage, a pair of multi-faced shafts rotatably mounted on said carriage, means synchronizing the rotation of said shafts, a series of equallyspaced indentations in the surfaces of said shafts, margin-stops mounted in the indentations on one of said shafts, a plurality of intermediate stops slidably fitted in said indentations on the other of said shafts, and means operatively engaging said intermediate stops for determining the intermediate locations of said carriage.

'7. In a typewriting machine, the combination with a laterally movable carriage, of a pairof multi-faced stop-racks rotatably mounted on said carriage, a pair of margin-stops adjustably mounted in the direction of the carriage travel on one of said stop-racks, counter-stop means therefor to arrest the travel of said carriage so as to establish writing-line limits, a plurality of tabulating'stops adjustably mounted on the'other of said stop-racks consonant with said marginstops, and a plurality of tabulating counter-stops counter-stops interposed between said intermedi+- ate stops for locating the intermediate positions of said carriage. V

9. In a typewriting machine, the combination with a carriage, of a pair of multi-faced stopracks rotatably mounted on said carriage, means synchronizing the rotation of said racks, a margin-control mechanism'on one of said racks, a

plurality of tabulator-stops adjustably mounted on the other of said racks, a plurality of tabulator-counter-stops interposed between said tabulator-stops, and means selectively placing said tabulator-counter-stops into engagement with said tabulator-stops for determining the intermediate carriage positions.

10. In a typewriting machine, the combination with a carriage, of a pair of multi-faced shafts rotatably mounted on said'carriage, means synchronizing the rotation'of said shafts, a series of equally-spaced indentations cut around the periphery of said shafts, pairs of margin-stops slidably fitted in said indentations on one of said shafts, counter-stop means, therefor, a plurality of intermediate stops slidably fitted in the indentations on the. other of said shafts, a plurality of intermediate counter-stops interposed between said intermediate stops fordetermining the intermediate positions of said carriage, and means controlling the, selection of said counter-stops for engagement with said intermediate stops. 7

11. In a typewriting machine, the combination with a laterallymovable carriage, of a pair of squareshafts rotatably mounted in said carriage, means synchronizing the rotation of said shafts, margin-stops mounted on one of said-shafts for limiting the lateral. movement of said carriage, counter-stop means therefor, a plurality of intermediate stops adjustably mounted upon the other. of said shafts, and means operatively engaging said intermediate stops for determining inter mediate carriage locations.

12. In a'typewriting machinathe combination with .a carria'ge'having a pair :of: square shafts rotatably mounted onsaid carriage, with means synchronizing the rotation of said shafts, and a series of letter-spaced indentations on the periphcry of said shafts, of pairs of margin-stops slidably fitted in the indentations on one -.of'said shafts, a counter-stop operatively engaging said margin stops for limiting the lateral movement 7 with a letter-feedingahd tabulating carriage, of a plurality of,carriage-stop supporting racks or shafts mounted individually for rotation, one shaft havingspacedtherearound a plurality of different line-length-defining pairs of marginstops and thezother shaft having a plurality of; intermediate or tabulating stops spaced therearound for the different line-lengths, and means coupling said shafts for'joint rotation to bring the margin and tabulating stops for any of the different line-lengths to effective position.

14. Ina margin and intermediate stop device for a typewriter -carriage, the combination with a pair of shafts rotatablymounted on said car riage, of means synchronizing the rotations of said shafts; pairsof margin-stops,*said marginstop pairs-being angularly spaced around and adjustablymounted on one of said shafts, intermediate stops angularly spaced around and. adjustably, mounted on the other shaft, and counter-. stopmeanspco-operative with-,the, margin and intermediate stops,'jointly selected by the syn+ chronized rotations of said shafts, for determining ,the lateral movements of said carriage. 15. In a margin and tabulating stop device for a typewriter-carriage, the combination of a margin and tabulating mechanism including both a margin-stop shaft and a tabulating-stop shaft, said shafts being rotatably mounted individually on said carriage, means synchronizing the individual rotation of said shafts, manipulatable means for rotating said synchronized shafts to different margin and tabulating stop-selecting positions, and a mechanism for retaining said shafts in any of said positions. 16. In a'margin and tabulating'stop device for a typewriter-carriage, thecombin'ation of a margin and tabulating mechanism including both a margin-stop shaft and a tabulating-stop shaft, said shafts being rotatably mounted on said carriage and having the formof racks, means conmeeting said racks for rotation in concert to dif' ferent margin and tabulating stop-selecting positions, and a finger-knob connected for rotating said racks to one'or another of said positions, said knob having identification symbols, indicating the positions of said racks.

' 17. In a margin and tabulating stop device for a typewriter-carriage, the combination of a margin and tabulating mechanism including a multifaced margin shaft and a multi-faced tabulatingstop shaft individually rotatably mounted on said carriage, said shafts being connected for syn-. chronousrotation, each shaft having a series of equally-spaced indentations in the surfaces thereof, margin-stops slidably fitted in said indentations on one of said shafts, tabulating stops in the indentations on the other shaft, and counterstops for operatively engaging the margin-stops on one shaft and the tabulating stops on the other shaft to'determine the lateral movement of said carriage for margin-gaging.

18. In a margin-stop device for a typewritercarriage, the combination of a pair of stop-racks rotatably mounted individually on said carriage, means connecting said racks for joint rotation,

pairs of different line-length-defining marginof said racks to different line-length-representing positions availing to bringthe appropriate margin and intermediate stops jointly into operative relation with said counter-stops. 1

7 19. In a typewriting machine having a" frame, the combination with a carriage running on said frame, of a pair of stop-racks rotatablymounted on said carriage, means synchronizing the rota-' counter-stop means on the machine-frame en--.

gageable by said margin and intermediate stops, the joint rotation of said racks to different linelength-representing positions availing'to bring the appropriate margin and intermediate stops into operative relation with said counter-stop means. I

20. In a typewriting machine having aletterfeeding carriage, a pair of square shafts-rotatably' mounted on said carriage, means synchronizing the rotation of said shafts, a plurality of different 1 line-length-defining pairs of margin-stops ad-- justably mounted on one of said shafts, interme-' diatestop's for' the different line-lengths adjustably mounted on the'other shaft, and counterstop means operatively engaging said marginstops and intermediate stops.

. 21..A stop-mechanism, for a letter-feeding typewriter-carriage, 'presettable for a predetermined number of independently variable linelengthsand tabulations or indentations therefor, and adjustable for effecting selection of one or another of said line-lengths, including, in combination with said carriage, a plurality of pairs of margin=stops, one pair for each line-length, one

length extents and the tabulations or indenta tions therefor, counter-stop means, and means enabling said pair of individual supporting means and their arrays of margin and intermediate stops to be adjusted in harmony to one or another line-representing position to bring a corresponding array of said stops into operative relation with said counter-stop means.

22. In a typewriting machine, the combination with a letter-feeding carriage a counter-stop for margin or line-length limiting, and a separate counter-stop for tabulating or line-indenting, of t'wo stop-rack: devices, one for different line-length-defining pairs of margin-stops and the other for tabulating or line-identing stops for the different lines, and means for shifting said two stop-rack devices in unison relatively to said counter-stops for changing from one linelength to another.

23. In a typewriting machine, the combination with a letter-feedingc arriage, of a plurality of rotatable members, at least one of said members including a series of line-length-defining stops thereon, one or more of said members also including'a'series of intermediate stops for line-indenting or 'tabulating, counterstop means for co-operating with one or another of said stop series, and means controlling the rotative position of said members for removing in harmony. any series of stops and replacing in'harmony another series of stops, in operative relation with said counterstop means.

"24. In a typewriting machine, the combination with a letter-feeding carriage, of different individual arrays ofcarriage-stops, each array including a rotatable mounting member, certain arrays presenting line-length-defining stops, other arrays presenting intermediate stops for line indenting or tabulating counterstop means for co-operating with one or another array, and

meanscontrolling the rotative positions of said members for removing in harmony any array and replacing it in harmony by any other array,

in operative relation with said counterstop means. JESSE A. B. SMITH.

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