US2164422A - Typewriting machine - Google Patents

Description

July 4,- 1939. H. PITMAN TYPEWRITING MACHI 4 Sheets-Sheet 1 Filed Jan. 2,, 1936 July 4,- 1939. H. L. PITMAN TYPBWRITING MACHINE Filed Jan. 2, 1936 4 Sheets-Sheet 2 INVENTOR I ATTORNEY.

July 4, 1939. L. PITMAN TYPEWRITING' MACHINE Filed Jan. 2, 1936 4 Sheets-Sheet 4 Patented July 4, 1939 UNITED STATES TYPEWBITING MACHINE Henry L. Pitman, Hartford, Conn, assignor to Underwood Elliott Fisher Gompany, New York, N. Y., a corporation of Delaware Application January 2, 1936, Serial No. 51,205

24 Claims.

This invention relates to power-operated carriage-return mechanism in typewriters, and more particularly to devices co-operative therewith for returning the carriage at will and selectively to diflferent linestarting positions.

'A counter-stop device on the carriage may cooperate with one or another of a plurality of linemounted on the frame of the machine for endwise displacement paralleling the carriage-movement. The severalmargin-stops may be disposed along and interlocked with the banking rod, and

' the counter-stop device may be on the carriage.

The endwise displacement of said banking red by means of one or another margin-stop may operate to open a clutch to disconnect the carriage from the power-drive.

Another feature of the invention is to provide for lateral adjustment of the line-start-defining margin-stops individually.

Another feature of the invention resides in means by which the operator of the machine detion of the carriage-return key. A margin-release device may also be manipulated to permit return of the carriage to an extreme line-start position.

Return of the carriage to the shortest-line start or first margin-position is determined by pressing down the carriage-return key and hold ing it down until the carriage is stopped, the depression of the carriage-return key interposing a banking dog, associated with the first margin-stop, into the path of the counter-stop device on the carriage. At the encounter of the carriage with said banking dog the carriagebanking rod is displaced sufllciently to cause the carriage-return trip or clutch mechanism to be restored to open condition, thereby stopping the carriage-return.

Return of the carriage to the second marginpositioned may be determined by depressing the termines engagement of one or another margih-v stop with the counter-stop device by manipulacarriage-return key momentarily. The retuming key retracts the banking dog for the first margin-stop to permit the carriage to pass to the second margin-stop which, upon engagement with a normally effective counter-stop 5 mounted on the carriage, moves with the banking rod to the right for resetting the trip or clutch mechanism to open condition to stop the carriage-return.

Return of the carriage to a third margin or line-start position is determined by tripping the margin-release device and the carriage-return key, thereby permitting the carriage to pass the first two margin-stops to a third or final margin-stop arranged to co-operate with a counter-v 1 stop on the carriage, and with the banking rod Y to reset the carriage-return trip or clutch mechanism to open condition. The stop-lug for the final margin may alternatively be fixed on the right side of the frame.

Another feature of the invention is the provision of a plurality of counter-stops on the carriage and a plurality of margin-stops, one of the margin-stops being engageable with one of the counter-stops, for gaging return of the carriage to one line-start position; another of the counter-stops being engageable with another of the margin-stops for gaging return of the carriage to another line-start position; and still another or final margin-stop being engageable with one of said counter-stops to gage return of the carriage to still another line-start position.

Another feature of the invention is the provision of one counter-stopgon the carriage co-oper,- able with a plurality of margin-stops on the frame, said margin-stops normally permitting the carriage-stop to return past or over them, but being provided with movable dogs that may be moved by a key on the typewriter into and out of the path of the counter-stop on the carriage. Said key may trip the carriage-return mechanism to initiate the carriage-return to one or another line-start position. The construction of the actuating mechanism connected with the key may be such that after. tripping the key and releasing it, the carriage-return mechanism proceeds to return the carriage until a further depression of the key moves or projects the dogs, whereby the counter-stop engages the proximate dog to coact with the banking rod to stop the carriage-return run; it being noted that, after the carriage-return is initiated, the operator may time said further depression of the key to thereby select a particular margin-stop and its dog to stop the carriage-return run.

Other features and advantages will hereinafter appear.

In the accompanying drawings,

Figure 1 is a perspective view showing the improved carriage-return mechanism applied to the frame of an Underwood typewriter, designed for work-sheets of great width, with parts of the typewriter broken away, and the return mechanism in the inoperative position.

Figure 2 shows the upper part of a work sheet with three margin-stop positions indicated.

Figure 3 is a side elevation in part of the structure shown in- Figure 1, with the improved carriage-return mechanism similarly in the inoperative position.

Figure 4 is a perspective view of a small sec tion taken out of Figure 1, showing a modification in which, in lieu of the second margin-stop shown in Figure 1, is inserted a second united movable dog and margin-stop similar to the first, permitting, upon the tripping of the carriage-return key-lever and its timely re-depression subsequently, the carriage-return mechanism to actuate the carriage, and the stop mechanism automatically to stop the carriage at the second-margin position.

Figure 5 is a perspective view showing the carriage-lug, the actuating dog that is combined with the first margin-stop, and the banking rod in normal or left position, the carriage-return mechanism being tripped, as in Figure 11.

Figure 6 is a side elevation in part showing the margin-stop dog moved up into operative position in the path of the carriage-lug by partial depression of the carriage-return key, the keyoperable carriage-return trip still being in untripped position.

Figure '7 is a perspective view similar to that shown in Figure 5, but with the carriage-lug in engagement with the actuating dog and the banking rod moved against spring tension to the extreme right position in which the carriage-return mechanism has been stopped.

Figure 8 is a perspective view with central parts and the right end broken away showing a part of the carriage-return mechanism applied to an Underwood standard typewriter having an 11" carriage with the carriage-return key-lever in the upper or inoperative position.

Figure 9 is a view similar to Figure 8, but showing only the right side of the 11" carriage, and the right end of the carriage-banking rod, which has affixed thereto a modified form of bracket adapted for engagement with the bellcrank which has a link-connection (not shown) with the rock-shaft that opens the switch and releases the motor-clutch.

Figure 10 is a side elevation in part showing the carriage-return key-lever fully depressed.

the carriage-return mechanism in operation, and the dog, which actuates the mechanism that releases the motor-clutch and breaks the electrical circuit, in the operative position in the path of the lug on the carriage, as it travels toward the first margin-stop, and with: the trip-link which initiates the carriage return, in tripped position.

Figure llis a view similar to Figure 10, but showing the carriage-return key-lever in the upper position, but after tripping the carriage-return trip-link out of its lock or keeper.

In Figure 2, a work-sheet A has typed lines starting at three different margin-positions for which the carriage is positionable by means of thepower-operated carriage-return mechanism.

This mechanism is shown in the present embodiment of' the invention attached to a frame 20 of an Underwood typewriter, which has the usual parts as follows: Rubber feet 2|, secured to the bottom of the frame 20 by screws 22, the frame being Wide and having a left horn 23 and a right horn'24. Type-bar keys 25 operate type-bars 26 to print'against platen 28 mounted in a carriage 21 having an inverted-L front side 29 and a finger-piece 30 for hand return of the carriage. Front carriage-rollers 3| ride in the recessed track in the rear of a scale-plate 32, and there is also a rear carriage-rail 33. On the rear of the carriage 21 is a carriage-rack 34 which engages a'pinion 35 rotatable on and slidable along a shaft 36, which rotates in the direction of the arrows, and is journaled in the back of the typewriter-frame 20. Of the two clutch- jaws 31 and 38, the former is tied to and mounted to rotate with the pinion 35, and the latter is fixed to the shaft 36 to rotate therewith. The shaft 36 is connected with a wheel 39 and in turn is driven by a shaft 4| which also carries a governor 40, of any desired construction, and is actuated by an electrical motor 42, to which is attached an electric plug 43.

A switch 44 comprises a movable member 45, a switch-slide arm 46 sliding in a vertical slot and having a notch 41, and a post 48 and carrying a slide 49 secured by overlapping tabs 50. A post 5| on the slide 49 supports one end of a coil-spring 52, which is tied at the other end to the post 48.

It is obvious that the switch is closed by the movement of the arm 46 toward the motor 42, the nose of the slide 49 engaging the movable member 45 and pushing it into contact with a stationary contact point on the switch 44. The spring mounting of the slide 49 assures an early and a continuous spring contact, and similarly on withdrawal of the arm 46 to break the switch, this construction assures a late breaking" of the switch, so that the motor is started before the engagement of the clutch and is stopped after the disengagement of the clutch.

A carriage-return key 53 is mounted in the normal position 53- so that it maybe depressed to the'positions shown 53 and 53. A pivot-bolt 54 secures the key to a vertical bracket 55 mounted under the frame 2'9 of the machine, and secured thereto by the left front foot 2|. A coilspring 56 is mounted about the bolt 54 and tends to keep the key 53 in the normal, upright, or inoperative position. The key 53 has an inner upwardly-extending tripping finger 51 which is mounted to move forwardly and rearwardly, the key stopping in normal position, Figure 4, by means of a slot 58 in the bracket 55 and a downward extension 59 of the key slidable therein.

A carriage-return key-link 60 carries at its front end a curved lifting cam 6| having a campoint 62 and pivoted on a pin 63. The cam 6| is cut out on the front in such a relationship to a pin 64 that it may rock slightly.

In its normal position the link 60 lies with a notch 65 thereof in engagement with a stop or keeper 66, which has a vertical slot 61 in which the link slides. It is now obvious that in the inoperative position of the carriage-return key, as shown in Figures 1 and 3, the finger-piece 51 is at the rear of the cam-point 62. The depression of the key 53 brings the top of the finger 51 into engagement with the cam-surface 6|, and at the point 62 lifts the slide-arm 60 and its notch 65 out of engagement with the keeper 66. A coilspring 68 draws the link-68 rearwardly when lifted by means of the finger-piece 51 and the cam-point 62. An arm 69 is connected at 18 to the link 68 and is on a rock-shaft H, which is journaled in the frame 28 of the machine. A second arm12 is fixed on the shaft H and is pivotally connected at 13 with. the switch-slide arm 46.- It is now obvious that when the keylever 53 is depressed, the slide 46 travels rearwardly to make" the switch 44. An upright arm 14 is fixed on the rock-shaft'1l and connected with an arm 11 by a link 15 and pins 16 and 18. The arm 11 is fixed to a r0ck-shaft'19, journaled in the frame-of the machine and carrying an oscillating cam-arm 88, which is in continuous engagement with a circular slot-member 8I secured to the side of the pinion 35, and therefore rotatably mounted therewith on the shaft 36. It is now obvious that as the link 68 is pulled to the rear by the coil-spring 68, it causes simultaneously the engagement of the clutch- jaws 31 and 38, and therefore initiates the carriage-return movement.

Mounted at a suitable point under the front 29 of the carriage-frame is aforwardly-extending stop arm or lug 82. An actuating arm 83 is pivot-F ally connected to the side'of the carriage=return key-finger 51 at 84, and a coil-spring 85 holds the arm 83 in engagement with a stop-pin 86 on the side of the finger-piece 51. An arm 88 is connected with the arm 83 by a link 81, and is fast on a supplemental rock-shaft 89 mounted on the left horn 23 of the frame of the machine and in a bracket 98, and having a depending arm 9I pivotally connected with an arm 93 by a link 92, the arm 93 being locked on a roclo-shaft 94, which is 'journaled in the sides of the frame- horns 23 and 24. The rock-shaft 94 has a longitudinal groove 91, and a banking dog 95 carries a plate 96 slidable in the groove 91 and secured therein by a locking screw 98. It is now obvious that the depression of the key-lever 53, lifts the arm 83 and simultaneously rocks the banking dog 95 into operative position, as a stop, in the path of the stop-arm 82 projecting from the front 29 of the carriage-frame.

In the modification shown in Figure 8, in lieu of the link 81, there is substituted, for a shortercarriage machine,- link 99 having an arm I 88 extending outwardly and upwardly for engagement directly with the rock-shaft arm 93. A usual adjustable left or line-end margin-stop I8I carries at its rear an extension I82 formed with the usual camming projections for actuating the bell, locking the carriage, and stopping the carriage, and overlies a notched rail I83 with which it is depressible. The usual carriage-stop-lug whichengages the cam-surfaces of the extension I82. is not herein shown. An adjustable linef start-defining margin-stop I84 is provided with a with stop-locating notches I88 in abanking rod I81. The banking rod- I81 is mounted for reciprocatory endwise movement, of an extent of say one and one-half letter-spaces, in the ends of the horns 23 and 24 of the machine. A screw I 89 fastened in the left end of the rod stops its movem'ent to the right, and a collar II I adjustably secured on the banking rod by a set-screw I I2 stops the movement of the banking rod to the left. The banking rod rides freely in bearings I I8 at ends of the frame of the typewriter. The collar 'III has a depending arm I45 having a bottom groove I46, to embrace the rod 89 to hold the banking rod I81 against rotation. In the modification shown in Figure 8 in the absence of the rock-shaft 89, the depending arm I45 straddles a pin II3 extending inwardly from and mounted on the left side of the frame of the machine.

A bracket I I4 is pinned on the under side of the right end of the banking rod I81 and supports a leftward extending arm I I5, which has a lengthwise s lot II6 which receives a pin II1 which connects the arm I I5 with the upright arm of a bellcrank H8, which is mounted on a bracket I3l, which in turn is mounted on the horn 24 of the frame of the machine. The slot II6 provides for the letter-space drop-back of the carriage.

In the modification shown in Figure 9, a bracket I I 9 is similarly mounted on the bottom of the banking rod I81 for engagement at its right end directly with anedge I28 of the bell-crank II 8. A link I2I connects the bell-crank H8 and a rock-arm I22 mounted on a rod I23, the ends of which are in grooves I24 in supporting members I25 attached to the frame 28 of the machine as shown in Figure 1. A link I26 pivotally connected to the opposite end of the rock-arm I22 is also pivotally connected with the endof a rock-arm I21 which is fixed on the rock-shaft 19. A setscrew adjustment I28 in the arm I22 permits the precise adjustment of the pin II1 with-reference bracket I I9.

It is'now obvious that when the banking dog 95 is elevated into the pathof the carriage-stop 82, as the stop engages the side of the banking dog 95, the latter is displaced rightwardly, along with the margin-stop I84, by the returning carriage, and-the banking rod I81 is thereby moved to the right, one and one-half letter-spaces, simultaneously rocking the bell-crank I I8, and through the interconnected mechanism above described rocking the cam-arm 88, and so breaking" the jaws 31, 38 of the clutch apart and so stopping the carriage return, and it is also obvious that through the interconnecting train of mechanism the depending arms 12 and 69 simultaneously break the switch and push the link-arm 68 forward against the tension of the spring 68 to ,re-engage the notch with the latch or stop 66.

ing from the banking rod I81 and also to an arm of the bracket 98, and tends to secure the banking rod in the left position illustrated in Figure- 1.

A third margin-stop I34 is provided with a. rearward lug or stop I 36, which is higher thanv the stop I38 extending from the marginstop I29, and acts as a final stop for the carriage. A margin-release lever I 31 carries the lug or stop I38 at its left end and an upwardly-extending fingerpi'ece I39 at its right, and a spring I48 reacting against the under side of the front projection 29 of the carriage yieldably keeps the margin-release lever in normal postion, the release lever being rockable on a pivot-screw MI.

The first margin-position or line-start I42, shown on the work-sheet A of Figure 2, corthe rear lug I30 on the second margin-stop I29,

the third'margin-stop of the mechanism.

Operation-When the carriage-return key 53 is depressed, as after typing a line, from the normal position 53 to the position 53 (Figure 11), the movable banking dog 95 is raised into the path of the carriage lug orpounter-stop 82, and when the key 53 is further depressed to the position 53, the forward end of the key-link 60 has been elevated to lift the notch 65 over the stop or keeper 66, thereupon permitting the spring 68 to move said link rearwardly to close the switch 44 to start the motor 42, and the rotatable clutchjaw 38 is forthwith engaged by the clutch-jaw 31 on the pinion'35, the latter, being in engagement with the carriage-rack 34, then returning the carriage from left to right in the direction of the arrow shown in Figure 5, and against the tension of the carriage-feed spring (not shown) By holding the carriage-return finger-key 53 depressed, as in the 53 position, while the carriage in its return reaches the first margin-position I42, indicated in Figure 2 on the work-sheet A, the carriage-lug 82 is intercepted by the raised banking dog 95, supported laterally by the first margin-stop I04 and rigidly held therefore by the jaw-teeth of arm I08 in the notches I08 on the front of the banking rod I01, so that further right or return motion. of the carriage results in rightward endwise' displacement of the banking rod I01,of, say one and one half letter-spaces. This rightward endwise displacement of the banking rod I01 rocks the bell-crank -I I8 which concomitantly through the described connecting mechanical controlling train opens the motor- clutch 31, 38 and the switch 44, and thrusts the link 60 into the locked position with the notch 85 over the keeper 66. It is obvious then that,following its arrest by means of the banking dog 95, the carriage settles in the position where imprinting on the work-sheet A will commence at the first margin-line I42 (Figure 2).

On the other hand, should the operator choose to return the carriage to the second margin-line I43, instead of to the first margin-line I42, the

operator trips the key 53, or, in other words,

the key 53 is depressed to the position 53 and immediately released. This operation releases the notch 65 from the stop 86 and permits the link 60 to travel back under the tension of the spring 68 to close the switch and simultaneously riage returns "right until the depending lug I38 of the margin-stop-release lever I31 intercepts the latter then coacting with the banking rod I01 to open the clutch 31,38, and switch 44, and to relatch the trip-link 80.

If, however, .the second margin-stop. be replaced with the banking-dog margin-stop and the coacting connecting mechanism as shown in Figure 4, and if, after tripping the key 53 to initiate the power return of the carriage, the operator then again depresses the key to either the, position 53 or 53 to put the banking dog 95 on the second margin-stop up into the path of the carriage-lug 82, the carriage is automatically brought to a stop for the second margin-position,

-as for the first margin-position.

It is now obvious that any number of marginstops, each having a movable banking dog 95, maybe used with the same method of operation as in the case of two, so creating a machine that may be designated as an automatic carriage-return tabulator, which would be entirely and completely controlled by the carriage-return key 53.

Referring back now to the structure shown in Figure 1, to move the carriage automatically from the first margin I42 to the second margin I43, it is necessary only to trip the key-lever 53, which idly raises and immediately lowers the banking dog 95, starts the motor and meshes the clutch 31, 38, and permits the carriage-lug 82 to ride over the first margin-stop I04 and the carriage to travel to the right until the depending ing or stop I38 of the lever I31 in its normal position intercepts the rearwardly extending lug I30 of the second margin-stop I29, and causes the longitudinal movement of the banking rod I01 to the right with the simultaneous and concomitant actuation of the clutch-releasing mechanism and the breaking" of the electrical switch.

The third margin I44 of the carriage is reached by depressing the finger-piece I39 to lift the stop I38 out of its normal path of interception with the margin-stop lug I30 and simultaneously depressing the key 53 whereupon the. carriage will be returned by power and will be arrested through the engagement of said stop I38 with the stoplug I36. Inasmuch as the finger-piece 30- is in proximate relationship with the operator's thumb when the forefinger is on the finger-piece I39, the operator may, without depressing the key 53, pull the carriage along to the right and up to the third or final margin-stop I34 and its stop-lug I36. Said stop-lug I36 is high enough to interceptor to be in the path of the stop I38 whether the latter is in its normal or its elevated position, so that it is immaterial whether the finger of the operator remains in contact with the finger-piece I39 or not. 5

In case the first two margin-stops have elevatable banking dogs 95, as shown in Figure 4, the carriage-position for the third margin or linestart I44 is automatically reached upon "tripping the key-lever 53 when the carriage is at the second margin I43. The operation would obviously the same for anotheror third marginstop having a banking dog 95.

Referring back now to the structure shown in Figure 1, if the key-lever 53 be tripped the carriage is automatically returned past the first margin-stopand automatically stopped when the stop I38 intercepts the lug I30 on the second margin-stop. shown in Figure 4, the 'tripping of the key-lever 53 automatically returns the carriage past both the first and the second margin-stops until lug Similarly in the modification I 38 engages the elevated lug I36 on the third 138 would be clear of-the stop-lug I30 or I36.

.It will thus be seen that if the carriage has been positioned by means of the first margin-stop I04,

, and, if it is desired to pass on to a succeeding margin-stop I29 or I34, the carriage-return key 53 may be operated for this purpose, that is, it may be ,tripped, and the banking dog 95 will be free for its idle movements'before the carriageretum movement actually starts.

While the banking rod I0! is being driven to the right untiL checked by the stop-screw I09,

it restores the bell-crank H8, clockwise of Figure 1, to restore the carriage-return control train to normal condition wherein the trip-link 60 is latched by the plate 66. At the ensuing dropback of the released carriage, the banking rod I0! is concomitantly restored to normal position by means of its spring I32, and the arm H5 connected thereto is also restored, these restorations, independently of said restored bell-crank 8, being permitted by reason of the pin-andslot connection 6, ll! of said arm 5 with said bell-crank H8. I

Depression of the carriage-return key from the position 53 to 53 Figure 6, lifts the margin-stop or banking dog 95 into line with the counter-stop 82 on the carriage. It further will be seen, Figure 6, that said dog or margin-stop lifting movement occurs before th'eltrip-link 60 is released and that the release of said link 60 occurs through further depression of the keyFfrom the position 53 to the position 53. During said further depression of the key the lifted margin-stop dog 95 is stationary in that the dog-lifting arm 83, connected to the carriage-return-key finger 51, is stopped by the plate 66 as in Figure 10, it being noted thatthe spring-connection 85 between said arm 83 and said finger 51 is arranged to yield to permit said further depression of the carriagereturn key.

Variations may be resorted to within the scope of the invention, and portions of the improvements may be used without others.

, Having thus described my invention, I claim:

1. In a typewriter, in combination, a frame, a

' carriage mounted for reciprocatory movement on the frame, power-operated means normally in idle condition and conditionable for returning the carriage, a stop mounted on said carriage, a margin-stop normally out of the path of said carriage-stop, a banking rod mounted on said frame for limited endwise movement and arranged to locate said margin-stop laterally at different carriage-return-limitlng stations, 9, carriage-retum key for conditioning said power-operated means,

means operable by said key to move'said marginstop into the path of said carriage-stop, and means operable by the endwise movement of said I banking rod at engagement of said margin-stop by said carriage-stop to restore said power-operated means to idle condition.

2. In a typewriter, in combination, a frame, a

reciprocatory typing carriage on said frame,

power-operated means for returning the carriage, a stop on said carriage, a carriage-return-limiting margin-stop normally out of the path of said carriage-stop, a banking rod displaceable endwise by and with said margin-stop at engagement of the latter by said carriage-stop, a carriage-return key, means operable by said key to cause said power-operated means toreturn said carriage, means operable by said key to move said marginstop into the path of said carriage-stop, and

means operated bythe endwise displacement of said banking rod to stop said power-operated means.

3. In a typewriter, in combination, a frame, a margin-stop mounted on the frame, a carriage mounted for reciprocatory movement ,on the frame, power-operated means for returning the carriage, a stop mounted on said carriage, said J ated means, said margin-stop being returned to itsnormal position, out of the path of said carriage-stop, by return of said key.

4. In a typewriter, in combination, a frame, a margin-stop mounted on the frame, a reciprocatory typing carriage on the frame, a stop mounted on the carriage for engaging said margin-stop, said margin-stop being movable, from a normal inoperative position, to engage said carriage-stop, power-operated means connectible to said carriage for returning the latter, a banking rod mounted on said frame for endwise displacement from a normal position, a spring for returning said banking rod to normal position, said margin-stop being connected to said banking rod, whereby the carriage, as it returns and its said stop encounters said margin-stop, effects said banking-rod displacement, a carriage-return key for connecting said power-operated means to return said carriage, mechanism controlled by said key for moving said margin-stop for engagement with said carriage-stop, and stopping mechanism actuated by said banking rod at said displacement thereof, to disconnect said carriage from said power-operated mea 5. The invention as set forth in claim 4, inclusive of means mounting said margin-stop on the frame to permit lateral adjustment of said mar gin-stop to different line-start-defining stations, and means for releasably coupling said marginstop to said banking rod at any one of said stations, said key-controlled mechanism, for moving said margin-stop to engage said cariage-stop, being arranged. to be operative at any of said stations.

6. In a typewriter, in combination, a frame, a margin-stop mounted on the frame, a reciprocatory typing carriage on the frame, a stop mounted on the carriage for engaging said margin-stop, said margin-stop being movable, from a normally inoperative position, to an operative position in which it may co-operate with said carriage-stop, power-operated means normally in idle condition, and conditionable for returning the carriage, a banking rod mounted on said frame for endwise displacement from normal position, said margin-stop being mounted for lateral displacement and being connected -to said banking rod, whereby the carriage, as it returns key is depressed -to said banking rod, a carriage-return-limiting for co-operation with said carriage stop, and means actuated by said bankingrod at said displacement thereof to restore said power-operated means to idle condition, said margin-stop being laterally adjustable to different line-start-deflning stations and being connectible to said banking rod at each station, said margin-stop being laterally displaceable at each station to effect said endwise displacement of said banking rod.

. '7. In atypewriter, in combination, a frame, a reciprocatory typing carriage on said frame, power-operated mechanism for returning said carriage, a carriage-return key for connecting said carriage to said mechanism, a plurality of stops on the carriage, a plurality of carriagereturn-limiting margin-stops on the frame, the first margin-stop having an element movable, from a normal'inoperative position, into the path of one of said carriage-stops, means operated by said key, for so moving said element by depression of said key, and for returning said element to inoperative position by return of said key, the second margin-stop having a stop out of the path of said one of said carriage-stops but in the path of the other carriage-stop, saidother carriagestop being movable by the operator out of the path of engagement with said second marginstop, a third margin-stop to engage said other carriage-stop after the latter passes said second margin-stop, said margin-stops being mounted so as to be laterally displaced by the carriage-return movement as the carriage-stops encounter said margin-stops, and means operatively connected to said margin-stops and actuated by said displacement thereof to disconnect said carriage from said power-operatedmechanism.

8. In a typewriter, in combination, a frame, a reciprocatory typing carriage on-the frame, a power-operated-carriage-return mechanism, a

carriage-return key manually depressible for causing connection of said carriage to said mechanism, stop-means on the carriage, a plurality of carriage-return-limiting margin-stops on the frame, the first margin-stop having a stop-element normally out of the path of said stop-means on the carriage, said stop-means being normally effective to engage the second margin-stop, a rock-shaft mounting said element, said rock-shaft being mounted in the frame and being connected to said key so to be rocked to and fro to rock said element and out of said path as said d released, and means connected to said margin-stops and acting, at the carriage-return-run-concluding engagement of either margin-stop by said stopmeans, to disconnect the carriage from said power-operated mechanism, said first margin-stop being laterally adjustable to different line-start-defining stations,

and'said element being splined to said rock-shaft so as to be adjustable laterally with said first margin-stop and be rockable by said shaft at any station.

9. In a typewriter, incombination, a frame, a reciprocatory typing carriage on said frame, power-operated means for returning the carriage, a carriage-return key depressible for causing connection of said carriage to said power-operated means, a banking rod mounted on the frame for endwise displacement from a normal position, a rock-shaft joumaled in said frame and parallel margin-stop adjustable to different line-startdefining stations along said banking rod, said margin-stop being connected to said banking rod at each station, said margin-stop including a banking dog splined to said rock-shaft to permit lateral adjustment of said dog with said marginstop to said stations, a stop on saidcarriage, a

connection from said key to said rock-shaft,

whereby depression and return of said key rock said banking dog into and out of the path of said carriage-stop. means connected to said banking rod and actuated by said displacement thereof to disconnect said carriage from said power-operatd means, said displacement being effected by 10.. In a typewriter, in combination, a frame, a I

reciprocatory typing carriage on said frame, power-operated means for returning the carriage, a carriage-return key depressible for causing connection of said carriage to said power-operated means, a stop on said carriage, a carriageretumlimiting banking dog, means mounting said banking dog on, said frame and airanged so that said dog is movable into and out of the .path of said carriage-stop, and so that said dog is adjustable alongthe path of the carriage-return to different line-start-deflning stations, and, further, so that said dog is laterally displaceable by the returning carriage when engaged by said carriage-stop, a connection from said key to saidbanking dog, whereby depression and return of said key move said dog into and out of said carriage-stop path, means responsive to said lateral displacement of, said dog to disconnect said carriage from said power-operated means, and a carriage-returnlimiting stop-device operative, relatively to powerreturn of the carriage to a position beyond said banking dog, to disconnect the carriage from said power-operated means.

II. In a. typewriter, in combination, a frame, a reciprocatory typing carriage on said frame, power-operated means for returning the carriage, a stop on the carriage, a carriage-return key depressible to cause connection of said carriage to said power-operated means, a margin-stop mounted on said frame for lateral adjustment to different line-start-defining stations and connected to said key, so that depression of the latline-start positions, another stop on the carriage for coacting with said second margin-stop, and stopping means responsive to engagement of either margin-stop by its carriage-stop for the conclusion of a carriage-return run, to disconnect said'carriage from said power-operated means,"

said other carriage-stop being arranged so as to be movable out of the path of engagement with said second margin-stop to permit return of the carriage beyond said second margin-stop.

12. The invention as set forth inclaim 11, inclusive of a thirdmargin-stop mounted on the frame for lateral adjustment to different linestart positions and engageable by said other carriage-stop, said stopping means being responsive also to engagement of said third margin-stop with said other carriage-stop. to disconnect the carriage from said power-operated means.

, carriage-return key, a margin-stop on the frame for limiting return of the carriage to a predetermined line-start position, a power-operatedcarriage-return mechanism actuated by depression of said key to return said carriage, controlmechanismactuated at engagement of said margin-stop by said carriage to stop the power -operated mechanism, an intermediate line-start margin-stop on said frame, means mounting said start stations, said mounting means being further arranged to permit lateral displacement of lateral displacement being effected by the returning carriage when the latter engages said intermediate margin-stop, a connection from said key to said intermediate margin-stop, whereby depression of said key to actuate said carriagereturn mechanism moves said intermediate margin-stop into said carriage-path, said key being immediately returnable for withdrawing said intermediate margin-stop for determining return of the carriage to said first margin-stop, and means operatively connecting said intermediate marginstop with said control-mechanism, whereby said intermediate margin-stop when engagedby said carriage and laterally displaced actuates said control-mechanism to stop said power-operated mechanism.

14. In a typewriter in combination, a frame, a

reciprocatory typing carriage on said frame, a

power-operated carriage-return mechanism, a key manually depressible for causing said carriag'e to be connected to said power-operated mechanism, a plurality of stopson the carriage, a plurality of carriage-return-limiting marginstops on the frame, the first margin-stop having an element normally positioned out of the path of one of said carriage-stops and movable into said path, means operated by depression.

of said key for moving said element into said path and by return of said key for returning said element to inoperative position, the second margin-stop having a stop-lug out of the path of said one carriage-stop, but in the path of the other carriage-stop, each margin-stop being arranged so as to be displaced, by the returning carriage, when engaged by its carriage-stop, and

means connected to said margin-stops and acting, through the displacement of either marginstop by the carriage, to disconnect said carriage from said power-operated mechanism, said other carriage-stop being arranged so as to be movable at will out of the path of said second marginstop for returning the carriage beyond the latter.

15. In a typewriter, in combination, a frame, a reciprocatory typing carriage on the frame, power-operated means for returning the carriage, a stop on the carriage, a carriage-return said margin-stop including a banking dog, rockable with said shaft and movable therealong for displacing said margin-stop laterally, means connecting said key with said rock-shaft, whereby depression of said key rocks said banking dog into the path of said carriage-stop for enabling the latterto effect said margin-stop and bankingrod displacement, andreturn of said key withdraws said dog from said path, and mechanism connected to said banking rod and acting, at the "displacement of the latter, to disconnect said intermediate margin-stop for movement into and Q out of the path of the carriage, said mounting f means being arranged to permit adjustment of said intermediate margin-stop to different linecarriage from said power-operated means.

16. The invention as set forth in claim 15, inclusive of a second margin-stop mounted on said banking rod and said rock-shaft, and also j having a banking dog rockable with said shaft and movable therealong, and means for releassaid intermediate margin-stop at any station, said ably connecting each margin-stop and dog to the banking rod at different carriage-return-limiting stations, said key being manipulatable at will, as to depression and release thereof, for determining which banking dog intercepts the carriage-stop. I

17. In a typewriter, in combination, a frame, a reciprocatory typing carriage thereon, a stop on the carriage, power-operated carriage-retum means, a carriage-return key depressible for causing said power-operated means to be connected to said carriage, a carriage-return-limiting margin-stop, a rack mounting said marginstop and mounted on said frame for endwise displacement, said margin-stop being adjustable along said rack to different carriage-return-limiting stations, a rock-shaft mounted on said frame parallel to said rack, said margin-stop having a banking dog splined to said rock-shaft, whereby said rock-shaft when rocked moves said dog into the path of said carriagestop, so that the carriage in its return encounters said dog and displaces the dog, the margin-stop, and. the rack laterally, a connection enabling said key to rock said shaft, meansponnected to said rack and acting, at the lateral displacement thereof, to disconnect said power-operated means from said carriage, said key'being held in depressed position to thereby hold said dog in said path mine return of the carriage beyond said marginstop, and/means operative at a predetermined position beyond said margin-stop to disconnect said carriage from said power-operated .means.

18. In a typewriter, in combination, a frame, a reciprocatory typing carriage on said frame, stop-means on the carriage, a plurality of carriage-return-limiting margin-stops, -a banking rod mounted on the frame for endwise displacement, 2. rock-shaft mounted on said frame parallel to said banking rod, each margin-stop being sliclably mounted on said banking rod and rockshaft for adjustment therealong to different carriage-return-limiting stations and being interlockable with said banking rod at each station, the first margin-stop including a banking dog splined to said rock-shaft, whereby the rocking of said shaft moves said dog into. the path of said stop-means on the carriage so that the returning carriage encounters said dog and thereby displaces the dog, margin-stop and banking rod laterally, a'carriage-retum key, power-operated means responsive to a momentary depression of said key, to drive said carriage in return direction, a connection from said key to said rock-shaft to rock the latter to move said ing whether the returning carriage encounters said dog or encounters the second margin-stop,

the encounter with the second margin-stopalso displacing the latter and the banking rod, and means connected to said banking rod and actin at the displacement thereof at the encounter of any margin-stop by said carriage to stop said power-operated means.

19. The invention as set forth in claim 18, said plurality of carriage-return-limiting margin stops including a third margin-stop mounted on,

and adjustable along, said banking rod and rockshaft, said stop-means on the carriage including a stop normally in position to copperate with the second margin-stop and 'displaceable, at will,

I to pass said second margin-stop for encountering the third margin-stop.

20. The invention as set forth in claim 18, said plurality of carriage-return-limiting marginstpps including a third margin-stop mounted on,

and adjustable along, said banking rod and rock- J stops, means, including a rack, for placing said shaft, the second margin-stop havinga banking dog'splined to said rock-shaft, said key being operable in respect of depression and return thereof for determining whether the returning carriage encounters the dog of the first marginstop or encounters the dog of the second margin stop, or encounters the third margin-stop, the encounter with the third margin-stop also displacing saidbanking rod forstopping said poweroperated means.

21. In a typewriter, in combination, a frame, a reciprocatory typing carriage-on the frame,

power-operated carriage-return mechanism, a-

- for endwise displacement, stop-means on the carriage to co-operate with said margin-stops,-tiie first margin-stop having a banking dog normally out of the path of said stop-means, means operatively connecting said key to, said banking dog at any station of said first margin-stop so that depression and return of said key cause said banking dog to move into and out of said path, whereby said key is operable to determineengagement of the returning carriage with said banking dog or with said/second margin-stop, said engagement operating to displace said rack endwise, and means operatively connected to said rack and acting at said endwise displacement thereof to disconnect said power-operated mechanism from said carriage.

22aIn a typing machine; a frame, a carriage thereon having a counter-stop, power means for moving said carriage laterally in one direction, a key on the frame-manually operable 'to cause a carriage moving operation of saidpower means, a stop, means, including an operative connection, enabling said key to project said stop from a normally retracted position into the path of the carriage counter-stop, said last-mentioned means constructed so that a displacement of the keyprojected-stop, may be, effected as they latter is engaged by the carriage counter-stop in the power movement of the carriage, and means responsive to said key-projected-stop displacement to terminate the power movement of said carriage. I i

23. In a typing machine; a frame, a carriage stops along the carriage path and also including an element movable to move all tlriestops from normally retracted positions into the path of the carriage counter-stop, power means" for moving said carriagein one direction, a key, connections enabling said key to cause a carriage-moving operation of said powerfmeans and to move said stop-moving element, said rack being displaced endwise as any key moved stop is engaged by the carriagecounter-stop in the power movement of the carriage, and means responsive to the endwise displacement of said rack to terminate the power movement of said carriage.

- 24. In a typing machine; a frame, a carriage.

thereon, a carriage paralleling rack movable endwise in the frame, a rack-paralleling shaft rockably mounted in the frame, a stop shiftable along said shaft, and also rockable by said shaft from a normally retracted position to an effective carriage intercepting position, a locator for said stop adjustable to different stations along said rack, power means operable to move said carriage in one direction when said shaft has been rocked to bring said stop to effective position, and means responsive to endwise movement of said rack to terminate the power movement of thereon having a counter-stop, a plurality of the carriage, said stop when engaged by the carriage being displaced by the laflger and concomitantly displacing said stop locator and rack.

L. PITMAN.

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