US1163761A

US1163761A - Type-writing machine.

Info

Publication number: US1163761A
Application number: US77296613A
Authority: US
Inventors: Alfred G F Kurowski
Original assignee: Underwood Typewriter Co
Current assignee: Underwood Typewriter Co
Priority date: 1913-06-11
Filing date: 1913-06-11
Publication date: 1915-12-14
Anticipated expiration: 1932-12-14

Description

w/ TNESSES A. G. F. KURQWSKI.

TYPE WRITING MACHINE.

APPLICATION FILED JUNE 11, m3.

163361, Patented D0014, 19 15;.

INVENTOR W y 7% By A. a, F. xuaowsm. TYPE WRITING MACHINE.

APPLICATION FILED JUNE II. I9I3.

Patented Dec. 14, 1915.

3 SHEET$-SHEET 2.

TIITIEJ .Iu IIIIIIIII III |||||I| WITNESSES.

ATTORNEY A. e, F. KUROWSKI.

TYPE WRITING MACHINE.

APPLICATION FILED JUNE-H. l9l3.

Patented Dec.14,1915.

3 SHEETS-SHEET 3.

ATTORNE p niarirnn srnrns rarnnar @FFJIGE.

ALFRED G. F. KUROWSKI, OF NEW YORK, N. Y., ASSIGNOR T UNDERWOOD TYPE- WRITER COMPANY, OF NEW YORK, N. Y., A CORPORATION OF DELAWARE.

TYPE-WRITING MACHINE.

Messier.

Specification of Letters Eatent. Patented D0343. 114, 1915.,

Application filed June 11, 1913. Serial No. 772,966.

- To all whom it may concern:

' rack and. carriage then being movable to-' Be it known that l, ALFRED G. F. KUROW- SKI, a citizen of the United States, residing in Brooklyn borough, in the county of Kings, city and" State of New York, have invented certain new and useful Improvements; in Type/Writing Machines, of which the following is .a specification.

My invention relates to power apparatus for operating the line-space mechanism and returning the carriage at the completion of each typewritten line.

An object of the invention is to provide an improved form of driving-connections,

comprising a rack and pinion, between the motor, the carriage, .and the line-space mechanism.

.A further feature of the invention is to provide an improved means for automatically cutting 'oifthe power and disconnecting the motor before the carriage has completed its return movement, the point of cut-ofi" being automatically varied to correspond with the distance through which the carriage is returned; i The invention further provides means for regulating the point of cut-off to correspend with the adjustment of the marginstop which controls the left-hand margin of the work-sheet.

An electric motor is geared to a drive shaft having a pinion meshingwith a rack on the carriage frame. .Said rack through suitable connections operates a cam to actuate. the line-s acer, the rack having a limited longitu inal movement relative to the carriage to permit such operation, the

gether as a unit to return the carriage preparatory to Writing a new line.

The motor circuit 1s closed a key lever which moves a frame carrying a movable switch contact into engagement with a stationary contact. Said frame also operates a clutch to connect the motor with the. driving shaft. As the 'carriage approaches the limit of its return movement,v

' said frame is automatically released to open the clutchand the electric switch, by means.

of an actuator consisting of-a depending finger carried by a nut which is threaded .on the drive shaft and travels downward during the return of the carriage; Said finger operates through an interponen't member and an adjustable wedge to actuateby means of a trip for releasing the switch frame. The

interponent member is moved along the wedge during the letter-feed travel of the carriage, and thereby automatically set to cut off the power at a-point in the carriage .return varying with the distance the carinafter appear.

In the accompanying drawings, Figure 1 I is aperspective rear view of an Underwood typewriting machine with my invention ap 'plied there'to- Fig. 2 is a top plan view showing the power-operated means for operating the llne-space mechanism. Fig. 3 is a part sectional front elevation View of the invention, the parts being in the position assumed as the carriage nears the end of a 11116 in 1ts forward movement, and the indicator being set at an intermediate position.

Fig. 4 is a View showing the relation of the parts shown in Fig. 3, as the carriage nears the end of its return movement, but before the trip has operated to open the motor circuit. Fig. 5 shows the parts as viewed from the right-hand side of Fig. 4:. Fig. 6 shows the position of the parts when the carriage is at the end of its forward movement and after the switch has been closed, the margin indicator being set at zero. Fig. 7 is a similar view, but with the indicator shifted to its extreme position in the other direction. Fig. 8 shows'the relation of parts as the carriage nearsthe end of its return movement and is in the act of operating the trip to open the switch. Fig. 9 shows the position of the parts when the carriage is at an intermediate position in its forward 1 travel.

rotary platen 4 is journaled in. a platen frame 5 connected to a rock shaft 6 on the carriage frame, whereby the, platen maybe shiftedto upper and lower-case positions.

Aline-space wheel 7 fixed to the platen axle 8 is rotated by a pawl 9 pivoted on a slide 10 operated by an arm 11 on the line-space lever 12. A, returning spring 13 is connected at its ends to said slide and the platen frame.

A spring-pressed detent l4 bearing against the line-space wheel holds the platen in adjusted position. The carriage is driven in a forward direction by a spring barrel 15 connected through a band 16 to the carriage.

The forward or'letter-feed movement of the carriage is controlled by escapement.

mechanism comprising escapement dogs 17 cotiperating with an escapement wheel 18- driven by a pinion 19 in mesh with a rack 20 on the carriage. The escapement dogs may be actuated in the usual manner by a universal bar in the path of the type-bars.

The return movement of the carriage may be effected by an electric motor M mounted on a bed plate or frame 21 which may be secured to the machine frame 3. On the motor shaft is a worm 22 running in mesh with a worm gear 23 carried by a clutch member 24 loosely mounted on a vertical drive shaft 25. Said shaft is iournaled in upper and lower arms 26 and 27 on a vertical standard 28 on the frame 21.

Fixed to the drive shaft 25 is a Pinion 29 in mesh with a rack 30 parallel with the platen and having a limited sliding movement in the direction of its length in a guide rail 31 fixed to the carriage frame. A rod 32, parallel with the rack 30 and supported in brackets 33 on the rail 31, extends loosely through an opening in a standard or post34 rising from the rack. A link 35 connects the standard'34 with an arm 36 which rocks on a shaft 37 and carries a cam 38. The cam engages an anti-friction roller 39 on a sliding bar 40 to which is secured'a depending plate or lug 41 in front of a pin 42 on the slide 10. It will be seen that, through the connections just described, a longitudinal movement of the rack 30 in the guide rail 31 will actuate .the cam 38 and thereby move the slide bar 40 rearwardly. carrying with it the'line-snace pawl and slide to rotate the platen. The line-space mechanism, however, may beoperated independentlv of the power mechanism if desired, the slidebar 40 remaining stationary when the lever 12 is operated.v A collar 43 adiustable on the rod 32 forms an adjustable stop to limit the return movement of the cam. When the rack 30 is driven by the electric motor. -it moves first in the guide rail 31 to actuate the line-space mechanism as above described, and then the rack and carriage are moved together as a unit to return the carriage. When the motor' is disconnected from the rack. the line-space mechanism andthe rack are restored to initial position by a spring 44.

59. Thejfreeend of'thetarm 58 extends beneath-the switch frame ;49. When the key engagement [wit The circuit for the electric motor M isestablished by closing a switch comprising a stationary contact 45 mounted on a base 46 and a movable contact 47 in the form of a 55 is depressed, the arm-'58 lifts the switch frame; and brings the switch contact 47 into the contact 45. The upward movement of the switch frame 49 is opposed-by a"spring: 601(Fig. 4) which also tends to swing-said frame about its pivot 61, but .such swinging movement is controlled by a bracket 62 having a vertically disposed face'against which bears apin 63 on the arm 50 of the frame. ,As'said' frameis thuslifted, and- ,after. .t'he switch contacts have been brought together, the frame is snapped forward'f as'the pin- 63 is permitted to enter a notch 64 inthe bracket 62, said notch forming a ledge tosupport the pin, and with it the frame, in operated position.

The clutch comprises the upper member 24 already referred to, vwhich carries the worm gear23, and islooselv mounted on the drive shaft 25 and held against vertical movement by the bracket 54. A lower clutch member 65 is vertically movable on the shaft into and out-of clutching engagement with the member 24, but isprevented from rotat-' ing independently of the shaft by a key .66 working in a groove 67 in the shaft. The clutch members 24 and-65 are respectively provided with

clutch teeth

68 and 69, the latter being yieldinglv mounted. as shown in Fig. 3. The lower clutch member is lifted by the clutch lever 52 to operative position when the frame 49 is lifted, and thereby establishes a driving connection between the motor M and the drive shaft 25.

The lower end of the shaft 25 is threaded to receive a nut 70 which is prevented from rotating with the shaft and thereby caused to travel up and down on the shaft during the forward -and. return movement of the carriage. A depending finger 71 adjustable in the nut 70 o e ates through interponent members '72 and 73 to actuate a trip lever 74, and thereby trip the frame 49 to open the switch and the clutch. The trip lever 74 isin the form of a bell crank pivoted at 75. and having an arm extending upward behind a pin 76 on the arm 51 of the switch frame 49. The other arm of the bell crank carriesa' pin 77 on which rests the interponent mem er 73, which is in the form of a cam or wedge on the end of a horizontal arm I interponent 72 is carried inward a. distance corresponding to the travel of the carriage.

As the interponent moves upward along-the cam 73, the point at which thecut-ofi takes place in the return movement of the carnage is gradually changed. If, for example, a.

complete line is written, the interponent 72 is elevated sutliciently to effect the cut-01f of the power at a comparatively early point in the return travel of the carriage so thatthe momentum of the carriage will be substantially overcome by the opposing motor 15 before the carriage is brought to the limit of its travel, and aneasy stop thereby is' effected. If the carriage is returned from an intermediate position, the position of the interponent will be such as to cause a cut-01f at a later period 3 corresponding tov the shorter distance required in which to slow down the carriage owing to the smaller momentum acquired during the -comparatively short return movement. The finger 71 which forms an actuator for operating the trip is adjustable 'up and down in the nut'to vary the point of cut-off to correspond with the power of the electric motor or other factors determining the proper point of cut-off.

During the return movement of the carriage the arm 7 9'is held stationary by a friction device, as shown in Fig. 5, comprising a pivoted arm 82 carrying a bow spring 83 between the arm 82 and the interponent 72. While the carriage is returning, the switch frame 49 is in its elevated position, as

shown in Fig. 5, and the arm 51 holds the arm 8.2 in position to compress 'the spring 83 and apply pressure to the interponent 72 to hold it in adjusted position. When the power is cutoff, and the switch frame 49 falls, a cam recess 84 in the arm 51 permits the spring 83 to swing free of the interponent. The holding pressure on the latter being removed, it is free to be returned to its starting position by a spring 85.

The point at which the carriage is stopped at the end of its return movement is controlled by a carriage stop 86' adjustable along the scale 8 7v on the machine frame, this stop determining the width of the lefthand margin of the work-sheet.

In order to vary the point of cut-off for the motor M to correspond to the adjustment of the carriage stop 86, the wedge 73 is made adjustable, the arm 78 carrying said wedge being connected to a rock arm 88 on a rock effect an earlier cut-off of the motor.

shaft 89 to the forward end of which is fixed an arm 90 connected through a link 91 to a disk 92 pivoted to a dial plate 93. The latter is provided on its front face with scale markings or numbers over which travels a pointer 94 on the disk 92, adjustable by means of a button 92 on the disk, said numbers corresponding to the markings on the scale 87. Vhen the pointer 94: is moved to the right from the zero position (Fig. 6), the wedge 73 is carried to the left, as indicated in Fig. 7 and thereby positioned to The pointer 94 is set to correspond with the position of the pointer on the stop 86. Thus, as shown in Fig. 3, the stop 86 is at 20 on the [scale and the pointer 94 is also ats20 on responding distance to the right.

the dial, themechanism for adjusting the wedge 73 being proportioned to vary the point'of cut-off to correspond with the adjustment of the carriage stop.

It will be noted that three different means are provided for regulating the point of cutoff for the motor M; first, the actuator 71,

.Which is adjustable to suit the strength of the motor, weight of the carriage, etc; second, the interponent 72 is automatically adjusted during the travel of the carriage to correspond with the length of line written; third, the wedge 73 is adjustable to correspond with the position of the carriage stop.

work-sheet and the pointer 94 correspondingly adjusted on the dial. As the carriage travels forward during the writing of a line, the shaft 25 is rotated by the rack 30 on the carriage, but as the clutch is open; no motion is imparted to theel'ectric motor. this forward movement the nut 70 travels upward and cams the interponent 72 a cor- When a line or part of a line has been written and 4 it is desired'to return the carriage to startmembers together.

ingposition, the operator depresses the key 55, and therebvlifts the switch frame 49, closing the switch and bringing the clutch The upward movement "of the switch frame also cams the arm 82 to theleft (Fig. 5) and frictionally holds the interponent 72 stationary. The motor circuit-being thus established and the clutch operated, the motorstarts anddrives the rack 30, operating the line-spacemechanism, and then drives the rack and carriage as. a

unit toward starting position. During this return movement the actuator 71 on the nut descends until it engages the interponent '72 and depresses the latter and the wedge 73,

During operating the trip 74 and releasing the switch frame from the bracket 62. The current' being cut off from the electric motor and the clutch opened, the carriage is gradually slowed down by the motor 15. The interponent 72 being released from the spring 83 as the switch frame drops, is immediately thrown to starting position.

Although the invention is herein shown as adapted and applied to an Underwood typewriting machine, it will be understood that the principles involved may be applied to various other makes of machines.

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 typewriting machine, the combination with a carriage, a rotatable platen thereon and line-space mechanism, of a rack extending in the direction of the carriage travel and having a. limited movement relative to the carriage, means operated by the rack during said limited movement to operate the line-space mechanism, a motor to drive the rack and carriage in one direction, a clutch between said motor and carriage, means to automatically operate the clutch to release the carriage from the motor, and means operated by the carriage to automatically vary the time at which the clutch is operated.

2. In a typewriting machine, the combination with a carriage having a letter-feed travel, a rotatable platen thereon and linespace mechanism, of a rack extending in the direction of the carriage travel and having a limited movement relative to the carriage, means operated by the rack during said limited movement to operate the line-space mechanism, a power device to drive said rack and thereby operate the line-space mechanism and return the carriage, means to automatically disconnect the carriage from the power device during the return of the carriage, and means operated by the rack during the letter-feed travel of the, carriage to automatically determine the period at which the carriage is disconnected.

3. In a typewriting machine,the combination with a carriage, a rotatable platen and line-space mechanism, of a rack on the carriage, means connected thereto to operate the line-space mechanism, a pinion in mesh; with said rack, a motor, gearing between the: l motor and said pinion comprising a clutch,

a trip operated by the carriage to open the clutch; and an interponent between the trip and carriage and operated by the carriage to automatically vary the period in the travel of the carriage at which the trip is operated.

4:. In a typewriting machine,.the combination with a carriage, a rotatable platen and line-space mechanism, of a member slidably mounted on the carriage for movement longitudinally thereof, connections between said member and line-space mechanism for actuating the latter, means to drive said member to operate the line-space mechanism and then return the carriage, means to disconnect said slidable member from the driving means when the carriage is at an intermediate point during its return travel, a stop adjustable to variably limit the return movement of the carriage, and means to vary the said point of disconnection to correspond with the adjustment of the stop.

5. In a typewriting machine, the combination with a carriage, a platen and a linespace mechanism, of a slide movable trans versely of the platen to operate said mechanism, a cam to operate said slide, a rack bar extending longitudinally ofthe carriage, a connection between the rack bar and said cam, a motor for moving the rackvbar on the carriage to operate the line-space mechanism and then moving the rack bar and carriage as a unit, an adjustable stop for the carriage, means to automatically disconnect the motor from the carriage as the latter approaches the limit of its travel determined by said stop, and means to adjust said point of disconnection to correspond with the adjustment of said stop.

6. The combination with a carriage, a rotatable platen and line-space mechanism, of a rack on the carriage, means connecting the rack to the line-space, mechanism, a motor, gearing comprising a clutch between the motor and the rack to drive the latter and thereby first operate the line-space mecha nism, and then drive the rack and carriage as a unit to return the carriage, a trip to release the motor from the rack during the return of the carriage, and an interponent between the carriage and trip and adjusted by the forward travel of the carriage to vary the point at which the trip is operated to correspond to the distance through which the carriage is returned.

7. In a typewriting machine, the combif nation with a carriage, a motor to drive it forward, and'a secondmotor to return the carriage, of a drive shaft geared to said second motor, a rack and pinion between said drive shaft and the carriage, means operated by said drive shaft to automatically cut off the power during the return travel of the carriage, and means to automatically vary the point of cut oifto correspond with the distance through which the carriage is returned.

8. The combination withfafcarriage and a motor to return the carriage, of a drive shaft, a driving connection between said shaft and the carriage, gearing between said shaft and motor comprising a clutch, a trip device to hold the clutch .in operative position and a nut traversed by said shaft to ace during the return movement of the carriage.

9. The combination with a carriage and a motor to return the carriage, .of a drive shaft, a driving fiOIlIlQCtlOIl between said shaft and the carriage by which the shaft is positively driven when the carriage is moved in either direction independently of the motor, gearing between said shaft and motor comprising a clutch, and'means operated by said shaft to open said clutch during the return movement of'the carriage at I a point automatically variable to correspond ,wlth the distance through which the carriage is returned.

10. In a typewriting machine, the combination with a'carriage and a motor to re turnthe carriage, of a drive shaft geared to the carr1age, gear1ng between the drive shaft and motor comprising a clutch, a manual device to operate the clutch and establish a. driving connection from the motor to the carriage, a trip to release the clutch, and an actuating device operated by the drive shaft to operate the trip jand-disconnect the clutch members during the return travel of the carriage,.the drive shaft being rotatable the carriage when the latter is .operated in either direction, whereby the position of said actuating device relative to the drive shaft is determined and controlled by the position of the carriage.

11. In a typewriting machine, the combination with a carriage and a motor to return.

the carriage,.of a.drive shaft geared to the carriage and rotatable bv the carriage in both directions; gearing between the drive shaftand motor comprising a clutch, a manual device to operate the clutch and establish a driving connection from the motor to the carriage, a trip to release the clutch, and an actuating device operated by the drive shaft to operate the trip and disconnect. the clutch. members during the return' travel of the carriage at a point au-tomatically' variable to correspond with the position of the carriage at the moment the clutch 12..In a typewriting machine, the combination with a carriage and a motor to return the carriage, of a.drive shaft geared to the carriage, gearing between the motor and drive shaft comprising a clutch, a keyconnected to operate the elutchand thereby connect the motor to drive the carriage, means to hold the clutch in operated position, a trip to release the clutch, an actuating device driven by said shaft, and-an interponent between said actuating device and the trip for: operating the latter, said 1n-' terponent being adjustable to effect the op-' eration of the trip 'at'difi'erent points in the travel of the carriage.

13. In a typewriting machine, the combi;

nation, with a carriage and a motor to return 7 connect the motor to drive the carriage,

' eling nut threaded on the' drive shaft for means'to hold the clutch in operated posrtion, a trip to release the clutch, an actuating device'dr-iven by said shaft, an interponent between said actuating device and the trip for operating the latter, and means to automatically shift the interponent during the forward travel of the carriage, and thereby vary the pointat which tlietrip is actuated to correspond with the. distance through whichthe carriage is returned.

14. In a typewriting machine, the combi-'- nation with a carriage and a motor to return the carriage, of a drive shaft having a rack and pinion connection with the carriage, gearing between the motor and said shaft comprising a clutch,-'a key .to operate saidclutch and connect the motor to the drive shaft, means to hold the clutch in operated position, a trip to release the clutch,-a travoperating the trip, an interponent between said nut and the trip, and means to cause a movement of the interponent throughout the forward travel of the carriage so that the trip will be actuated when the carriage has reached a point in its return movement automatically varied to correspond with the'position of the carriage at the time the clutch is operated.

the carriage, of-a drive shaft geared to the carriage, gearing between the motor and said shaft comprising a clutch, a key to operate the clutch and connect the motor'lou to the drive shaft, means to hold the clutch in operated position, a trip to release the clutch, a traveling nut on said shaft, an 1nterponent, a cam between sai d nut and the trip; and a second cam operated bysaid nut to cause'the interponent to travel along Silldf first-named cam during the forward travel of the carriage, and thereby vary the point' at-which the trip will be actuated-during the return movement of the carriage.

16. In a typewriting machine, the combination, with a carriage, a motor and connections from the motor to the carriage for returning the latter, of a device to cause the power of the return drive to be cut on .after the carriage has traveled part way to the startingpoint, said device having a variable adjustment or movement au tomatically propo'rtioned in each instance to. the extent of letter-feed forward movement of the carriage, whereby the device is set to cause the power tofbe out off when the carriage is a greater. or less distance fromthe limit of its return movement in accordance with the length 'of the line from which the return is made, an adjustable carriage stop, and

means cooperating with said cut-off device to additionally vary the point of cut-oflf to correspond with the position of the carriage stop.

17. In a typewriting machine, the combination with a carriage, a motor and connections from the motor to the carriage for returning the latter, of means to cut oif the power after the carriage has traveled part way to the starting point, means to vary the time of such power cut-ofl" for successive lines so that the distance of the carriage from the starting point is automatically varied in accordance with the length of the line from which the return is made, an adjustable carriage stop determining said starting point, and mechanism for additionally varying the time of the power cut-ofi' to correspond with the position of the carriage nation with a carriage and power-operated automatically variable with the length of line from which the carriage is returned and variable with the position to which the carriage is returned.

19. In a typewriting machine, the combination with a carriage and a power-operated return mechanism therefor, of means to cut ofl the power when the carriage is at a point automaticallyvariable with the position from which the carriage is returned, an adjustable carriage return stop, and a device settable to correspond with said return stop and thereby additionally vary the point at which the power is cut off to correspond with the position of the return stop.

20. In a typewriting machine, the combination with a carriage and power-operated return mechanism therefor, of a carriage return stop, meansto effect a slowing down of the carriage through a range of its return movement automatlcally variable with variations in the acceleration of the carriage, and additional means to control said range of movement to compensate for adjustment of said stop.

21. In a typewriting machine, the combination with a carriage, a power device to return the carriage, an adjustable stop to limit the return movement of the carriage, and a scale to indicate the position of said stop, of means to automatically cut off the power during the return movement, a device adjustable in conjunction with said stop to vary the point of cut-oil to correspond with the position of said stop, and an indicator to indicate adjustment of said device corresponding to the adjustments of the said stop.

22. In a typewriting machine, the combination-with a carriage, of a power device to return the carriage, a carriage stop, a scale to indicate the position of said stop, means to cut ofi" the power during the return movement of the carriage, a device adjustable to vary the point at which the power is cut off during the return of the carriage, a second scale, a pointer movable oversaid scale, and operatingconnections between said pointer and said adjustable device.

23. In a typewritingmachine, the combination with a carriage, a power device toreturnthe carriage and means to cut ofl? the power during the return travel of the carriage, of scales, pointers working over said scales, a carriage stop connected with one pointer, and a device connected with the other pointer to vary the point of power cut-off to correspond with the position of the carriage stop, whereby when the pointers are adjusted to corresponding positions on the scales, the slowing down of the carriage will take place through approximately the same length of travel of the carriage for any adjustment of the pointers.

, 24. In a typewriting machine, the combinationwith a carriage, a power device to return the carriage and means to automatically cut oil the power during the return travel of the carriage, of a device adjustable to vary the point at which thepower is cut off, and an indicator operatively connected to said device.

25. In a typewriting machine, the combination with a carriage and a motor to return the carriage, of an element having a positive driving connection with the carriage enabling the carriage to drive said element in either direction, gearing comprising a clutch between the motor and said elethe carriage, of a shaft having a permanent driving connection with the carriage, enabling the carriage to drive said shaft in either direction, a clutch between the motor and said shaft, means to open the clutch during the return travel of the carriage, and a device actuated by said shaft to vary the point in the carriage travel at which the clutch is opened to correspond with the distance through which the carriage is re turned. a

27. In a typewriting machine, the combination with a carriage and a power device to drive the carriage, of means to automatically cut oil the power from the carriage before the carriage has completed its movement, said cut-0E means comprising a device adjustable to cause the power to be cut off when the carriage is at a point variable with the adjustment of said device, and an indicator connected to said adjustable device and movable therewith.

28. In a typewriting machine, the combination with a carriage and a power device to drive the carriage, of means to automatically cut off the power from the carriage before the carriage has-completed its movement, said cut-0E means comprising a de- 'vice adjustable to' cause the power to be cut off when thecarriage is at a point variable with the adjustment'of said device, an

indicator connected to said device, and an adjustable stop to limit the travel of the carriage, said indicator comprising a graduated scale to enable said cut-off device to be set to correspond with the adjustment of the carriage'stop.-

29. In a. typewriting machine,-the combinatlon with a carriage, of a motor to drlve the carriage, an adjustable stop to limit the travel of the carriage, means to automati-t cally cut off the driving power of the motor from the carriageibefore the latter has reached said.stop, whereby the carriage may be slowed down before it reaches the stop, said cut-oil means comprising a device ad-.

justable to vary the time at which the power is cut off, and an indicator connected to said device and adjustable therewith, said indicator comprising a pointer movable over a scale, graduated to enable the adjustable device to be set to correspond with the adjustment of the carriage stop.

30. In a typewriting machine, the combination with a carriage, a carriage stop and a graduated scale to indicate the position at which the stop is set, of a motor to drive the carriage, means to automatically cut off the driving power of the motor from the carriage before the carriage reaches said stop, said cut-off means comprising a device adjustable to vary the time of cut-off to correspond with'the adjustment of the carriage stop, and an indicator connected to said adjustable device for movement when said device is moved, said indicator comprising a pointer-and a graduated-scale over which the pointer moves, which pointer when set at the scale graduation corresponding to the setting of the carriage stop along its scale causes the power to be cut off when the carriage is at a predetermined distance from the stop, said distance being substantially the same for all adjustments of the.

carriage stop' when the said pointer is set to correspond with the position of the carriage stop.

31. In a typewriting machine, the combination with a carriage and a motor to dri e the carriage, of a device to cut off the driving power of the motor from the carriage during the travel of the carriage, an adjusting device ad ustable to cause the power to be cut ofi while the, carriage is in a position determined by the adjustment of saidadjusting device, indicating means comprising I ascale with numbered graduations, and a pointer moving over the scale, saidpo'inter connected to said adjusting device for operating the latter and shifting the point of cut-ofi' through a number of letter-spaces corresponding to the difference between the numbers from one to the other of which said pointer has been moved over the ,scale.

32. In a typewriting machine, the combination with a carriage and a motor for returning the carriageafter each line of writing, of a key operable to cause the motor to return the carriage, a device for automatically cutting off the driving power from the carriage before the carriage has completed its return travel, an'adjusting device operated during the forward or'letter-feed travel of the carriage to a position deter mined by the lengthof the-line written, said adjusting device operable tovary the point at which the power is cut off to correspond with the length of the line from which the carriage is returned, whereby the carriage is slowed down afterthe power is cut off through a distance varying with the length of line from which'the carriage has been returned, an adjustable stop to limit the return movement of the carriage, and a manually adjustable device cooperating with said first-named adjusting'device and settable to vary the'point of cut-off to correspond with the adjustment of saidstop.

33. In a typewriting machine, the combination with a carriage and a motor for returning the carriage after each line of writing, of a key operable to cause the motor to return the carriage, a device for automatically cutting off the driving power from the carriage before the carriage has" completed its return travel, an adjusting device operated during the forward or letter-feed travel of the carriage to a position determined'by the length of the line written, said adjusting deviceoperable to vary the point at which the power is cut ofi' to correspond with the length of the line from which the carriage is returned, whereby the carriage is slowed down after the power is cut off through a-distance varying with the length of the line from which the carriagehas been returned, an adfor effecting a driving connection between the motor and carriage, a trip to release said clutch and thereby disconnect the motor from the carriage during the travel of the carriage, a trip-operating device geared to the carriage for movement in unison therewith, a series of interponents between said operating device and the trip, each adjustable independently of the other to vary the point at which, during the travel of the carriage, the trip is operated, means automatically operated during the forward travel of the carriage to shift one of said interponenets to a position determined by the length of the line Written, to thereby automatically vary the point of cut-off to correspond with the length of line from which the carriage is returned, an adjustable stop to limit the return movement of the 1 riage through which the motion of said shaft is transmitted to the carriage to return the carriage, and through which the carriage is operative to drive said shaft during the forward travel of the carriage, a nut threaded on said shaft to travel therealong as the shaft rotates, and means operated by said nut to open the clutch during the return travel of the carriage.

36. In a typewriting machine, the combination with a carriage and a motor to return the carriage, of a shaft, gearing comprising a clutch between said shaft and the motor for causing the motor to rotate said shaft, gearing between the shaft and carriage through which the motion of said shaft is transmitted to the carriage to return the carriage, and through which the carriage is operative to drive said shaft during the for- 'ward travel of the carriage, a nut threaded on said shaft to travel therealong as the shaft rotates, means operated by said nut to open the clutch during the return travel of the carriage, and a device also operated by said nut to automatically vary the point in the carriage travel at which the clutch is opened in accordance with variations in the position from which the carriage is returned.

37. In a typewriting machine, the combination with a carriage and an electric motor to return the carriage, of a drive shaft, gearing comprising a clutch between the drive shaft and the motor for causing the motor to rotate said shaft, gearing between the shaft and carriage through which the motion of said shaft is transmitted to the carriage to return the carriage, and through which the carriage is operative todrive said shaft during the forward'travel of the carriage, a switchcontrolling the supply of current to the motor, a switch frame connected to the switch and clutch, a key for operating said frame to close the switch and clutch, a device to hold said frame in operated position, a trip to release said frame, and a device driven by said shaft for operating the trip during the return travel of the carriage.

38. In a typewriting machine, the combination with a carriage and an electic motor to return the carriage, of a drive shaft, gearing comprising a clutch between the drive shaft and the motor for causing the motor to rotate said shaft, gearing between the shaft and carriage through which the motion of said shaftis transmitted to the carriage to return the carriage, and through which the carriage is operative to drive said shaft during the forward travel of the carriage, a switch controlling the supply of current to the motor, a switch frame connected to the switch and clutch, a key for operating said frame to close the switch and clutch, a device to hold said frame in operated position, a trip to release said frame, a device driven by said shaft for operating the trip during the return travel of the carriage, and an interponent between said device and the trip automatically operated during the forward travel of the carriage, and controlling the point at which the trip is operated during the return of the carriage.

39. In a typewriting machine, the combination with a carriage, of an electric motor, gearing between the motor and carriage to return the carriage, said gearing comprislng a clutch, a clutch-operating device, a switch in the motor circuit, a key for closing said switch and operating said device to connect the motor with the carriage, means to hold the clutch-operating device and the switch in operated position independently of the key, a trip to release said device and open said switch, a trip-operating device geared to the carriage fora-utomatically actuating said trip and opening said switch, thereby disconnecting the carriage from the motor and opening the motor circuit before the carriage has completed its return movement, means automatically adjusted during the forward travel of the carriage to positions corresponding to the length of the forward travel of the carriage to thereby automatically vary-the time at which, during the return of the carriage, the trip is actuated,

an adjustable carriage stop to limit the return movement of the carriage, and man- 'ually adjustable means to vary the point at ally varying the travel, to correspondingly position said controlling device, and thereby automatically vary the point at which the power is cut off during the return of the'carriage to corre spond to the length'of the line from which the carriage is returned, said connection of the-actuator with the carriage operative to cause the actuator to be restored bythe carria-ge during the return of the carriage.

41. The combination with a typewriter carriage and a power device to return the carriage, of means to automatically cut off. the power during the return of the carriage as it approaches its starting position, said means comprising an actuating device operatively connected tothe carriage, and means positioned thereby during the forward travel of the carriage to control and vary the point of cut-ofi during the return of the carriage to correspond with the length of the line from which the carriage is returned, the connection between the carriage and said actuating device being operative to restore the latter when the carriage is returned independently of the power device.

42. The combination with a typewriter carriage and a power device to return the carriage, of means to automatically cut off the power during the return of the carriage as it approaches 1ts starting position, said means comprising an actuating devlce operatiyely connected to the carriage, means p0- sitioned thereby during the forward travel of the carriage to control and vary the point of cut-off during the return of the carriage to'correspond with the length -of the line from which the carriage is returned, the connection between the carriage and said actuating device being operative to restore the latter when the carriage is returned independently of the power device, an adjustablecarriage stop to limit the return movement of the carriage, and means for manupoint of cut-offto correspond with the ad -uStment of said stop;

43. The combination with a typewriter carriage anda motor to return the'carriage, said motor disconnected from the carriage during the forward travel of the latter, of means for connecting the motor to-the carriag'e to return the latter, means for disconnecting the motor from the carriage as the latter approaches its initial position during the return of the carriage, said disconnecting means comprising a device to control the time at which the motor is disconnected, and an actuator for said device, said actuator having a connection with the carriage, whereby it is drivento set said controlling device at a position corresponding-to. the length of the line from whieh'the carriage is returned, and whereby the actuator may be restored by the carriage duringthe return of the latter.

4i. The' combination with a typewriter carriageand. a motor, of gearing'betwe'en the motorand carriage comprising a clutch open during the forward-travel of the car-- riage and permitting thecarriage to travel in either direction while the motor is at rest, means to operate said clutch to connect the motor with the carriage and cause the motor to return the carriage, means to hold the clutch inoperated position, a trip to release said holding means and cause the motor to be disconnected from the carriage, means to automatically actuate said trip during the return of the 'carriage, said last-named means comprising a device to control the time at which, during the carriage return, the trip is actuated, and an actuator geared to the carriage and driven thereby during the forward travel of the carriage, to position said controlling devicefor effecting the disconnection of the motor at a point automatically-variable with the length of the line from which the carriage is returned, the gearing between said actuator and carriage operative to effect the restoration of the actuator during return of the carriage either manually or by the motor.

45. In a typewriting machine, the combi nation with a carriage and a motor to return thecarriage, of a gear trainbetween the carriage and motor comprising a clutch, akey to operate said clutch and connect-the motor to the carriage for returning the lat ter, means for holding the clutch in operated position independently of the. key, means to automatically open the clutch during the return of the carriage, said clutch-opening means comprising a device to control the time at which the clutch is released, andan actuator having adriving connection with the-carriage and operative to" set said controlling device during the forward travel of the carriage, to a position corresponding to the extent of. said forward travel, whereby the point at which the motor is disconnected from the carriage is automatically varied to 4 correspond with the length of the line from which the carriage is returned, the carriage being manually returnable independently of the motor, and said connection between the carriage and actuator being operative to restore the latter during the return of the carriage either manually or by the motor.

46. The combination with a typewriter carriage and a motor, of a driving connection between the motor and carriage comprising a normally open clutch permitting the carriage to be advanced and returned while the. motor remains at rest, means to operate the clutch for connecting the motor to the carriage to return the latter, means to open the clutch during the return of the carriage, and means to automatically vary the point at which the clutch is opened and the motor disconnected, to correspond to the length of the line from which the carriage is returned, said last-mentioned means comprising an actuating device having a connection with the carriage for moving said device during the forward travel of the carriage to a point-corresponding to the extent of said forward travel, and whereby said actuating device is returned by the carriage as the latter is manually returned.

47. The combination with a typewriter carriage, a motor, and connections from the motor to the carriage for returning the latter, of means to cut off the power before the carriage has completed its return travel,

means to vary the time of such'power cutoff for successive lines so that the distance of the carriage from the starting point at the time of cut-ofl is automatically varied in accordance with the length of the line from which the return is made, an adjustable carriage stop to determine the starting position of the carriage, means settable to additionally vary the time of the power cut-off to correspond with the position of the carriage stop, and manually adjustable means to further vary the time of the power cut-oil independently of the adjustment of the carriage stop or the length of line from which the carriage is returned.

48. In a typewriting machine, the combially vary the point at which the power is cut off to'correspond with the position of the return stop, and independently adjustable means to further vary the point at which the power is cut ofl to correspond with the length of carriage travel required after the power has been cut oil, to effect said slowing down of the carriage.

ALFRED G. F. KURO'WSKI.

Witnesses:

TITUS H. IRONS, F. E. ALEXANDER.