US1278475A

US1278475A - Type-writing machine.

Info

Publication number: US1278475A
Application number: US13207116A
Authority: US
Inventors: Ward S Ireland
Original assignee: NAT SHORTHAND MACHINE Co
Current assignee: NATIONAL SHORTHAND MACHINE Co; NAT SHORTHAND MACHINE Co
Priority date: 1916-11-18
Filing date: 1916-11-18
Publication date: 1918-09-10
Anticipated expiration: 1935-09-10

Description

W. S. IRELAND.

TYPE WRITING MACHINE- APPLICATION FI'LED NOV. :8. 1916- 3 SHEETS SHEET 1.

W. S. IRELAND.

T YPE WRITING MACHINE. APPLICATION FILED NOV. 18. I916.

1,2?8,475. PatentedSept. 10, 1918.

3 SHEETSSHEET 2.

W. S. IRELAND.

TYPE WRITING MACHINE.

APPLICATION FILED NOV. I8. 1916.

Ezx'mnsed; Sept. 10, 1918.

3 SHEETSSHEET 3.

time srars rarest? carr es.-

WARD S. IRELAND, OF ST. LOUIS, MISSOURI, ASSIGNOB T0 NATIONAL SI-IOR'IHAND MACHINE COMPANY, OF ST. LOUIS, MISSOURI, A CORPORATION OF DELAWARE.

TYPE-WRITING MACHINE.

Specification of Letters Patent. Patented Sept. 10, 1918.

Application filed November 18, 1916. Serial No. 132,071.

chines, of which the following is a full, clear,

and exact description, reference being had to the accompanying drawings, forming a part of this specification.

My invention relates to improvements in typewriting machines. Prior to this invention typewriting machines, especially stenographic or shorthand Writing machines,

have been provided with means for feeding a continuous strip of paper which usually unwinds from a roll and passes to printing devices, whereby a continuous series of characters are printed upon the paper. Owing to the peculiar requirements of a stenographic writing machine,.it is a decided advantage to use a very long strip of paper so that the writin may be continued for a considerable perio of time without frequent interruption; however, considerable difficulty has been experienced inhandling such paper after it passes from the machine. Stenographic writing machines have been provided with means for rewinding the paper after it passes from the printing devices, the paper being fed from a supply roll to a rewinding roll, and afterward fed from the rewinding roll while the shorthand notes are being transcribed by the stenographer. Other machines have not been provided with rewinding devices, the paper being torn from such machines in comparatively short strips which are irregular in length and usually difficult to handle on account of the tendency of the paper to recurl after-passing from a supply roll. Therefore, the paper handling devices of stenographic writing machines have not been entirely satisfactory.

()ne of the objects of my invention is to produce a typewriting machine having a shearing device adapted to cut a long strip of paper into small uniform sheets which may be easily handled by the operator, and which may be readily filed away for future reference. Since the long strip of paper is usually firmly curled around the axis of a supply roll contained in the machine, the preferred form of the invention includes means for uncurling the paper after it passes from the supply roll, thereby straightening the paper before it is discharged from the machine. Another object of the invention is to produce an automatic shearing device which is so constructed that it will operate in response to movements of key levers. With this object in View the parts are preferably so constructed and arranged that the energy for driving the automatic shearing device is transmitted from the printing keys to a shear operating spring. The power for operating the automatic shearing device is, preferably, gradually stored in the spring during different key operations, so that the required power is obtained very gradually and Without any appreciable effort on the part of the operator. The automatic shearing device preferably includes a timing arrangement for restraining the shear operating spring during a predetermined number of key operations, thereafter releasing said spring with the result of severing the paper. The timing device is preferably so constructed that the long strip of paper will be cut into coinparatively small and substantially uniform sheets.

With the foregoing and other objects in view the invention comprises the novel construction, combination and arrangement of parts hereinafter more specifically described and illustrated in the accompanying drawings wherein is shown the preferred embodiment of the invention; however, it is to be understood that the invention comprehcnds changes, variations and modifications which come within the scope of the claims hereunto appended.

Figure I is a longitudinal sectional view of the typewriting machine, embodying the features of my invention.

Fig. II is a fragmentary section illustrating the printing device and the universal bar through which movement is transmitted from the keys to the automatic shearing device.

Fig. III is a plan view partly in section, illustrating the rear portion of the machine.

Fig. IV 1s a vertical section taken through bar.

the series of key levers and also through the paper supply roll.

Fig. V is a vertical section taken approximately on the line VV, Fig. I, looking toward the front of the machine.

Fig. VI is a section taken approximately on the line VI-VI, Fig. V.

Fig. .VII is a section taken approximately on the line VIIVII, Fig. V, illustrating the means for restraining the timing device. Fig. VIII is a detail view of the universal To illustrate the preferred form of the invention, I have shown a typewriting machine provided with a housing 1, a type holder 2, (Fig. I) type 3 secured in said type holder and an-inknrg'ribbon 4 adjacent to said type. The paper passes from a roll A over a roller 5, under and partially around a roller 5, in front of and over an uncurling device 6, and then to a paper feeding device whereby it is unwound from the roll and fed through an opening 7 .at the rear of the machine.

The key actuated devices preferably include a series of angular levers each having an upwardly extending arm 8 at its front end and a character key 9 at the upper end of said arm. Each of the key levers also includes an arm 10'extending rearwardly from thearm 8, and an arm 11 extending up Wardly from the rear portion of said arm 10. The series of key levers is pivotally supported, preferably by a pivot member 12 located at the junctions of the

lever arms

10 and 11. The upper end of each lever arm 11 is provided with a forwardly extending hammer element 13 which lies adjacent to the type 3, as shown most clearly in Fig. II. Restoring springs 11 tend to retain the key levers in engagement with an abutment 15, see Figs. I and II. When one of the character keys 9 is depressed, the key lever associated therewith turns about the axis of pivot member 12 and the hammer element 13 moves toward the type 3, thereby forcing the paper and inking ribbon toward the type and printing one of the type characters on the paper. The key levers may be operated independently of each other, or any desired number of key levers may be operated simultaneously. It will now be apparent that the machine shown is a stenographic writing machine, and that the keys and printing type are adapted to represent shorthand characters.

16 designates a key lever guide near the upper ends of lever arms 11, and 17 designates a key lever guide located at the junctions of the

arms

10 and 11.

The universal bar associated with the key levers includes a transverse abutment holder 18 arranged in front of the series of lever arms 11 and provided with a yieldable abutmember 12 and secured near their upper ends to the transverse abutment holder 18.

22 designates a connecting member uniting the

arms

20 and 21 of the universal bar, said connecting member being located at the rear of lever arms 11. 23 designates a restoring spring (Figs. I and II) tending to retain the universal bar in theposition shown in the drawings. The transverse abutment 19, formingpart of the universal bar structure, is so arranged that the universal bar will move in responseto movements of any one of the key levers.

The paper feeding device comprises a rotatable shaft 25 (Fig. I) a pair of

toothed wheels

26 and 27 fixed to said shaft, a ratchet wheel 28 also fixed to the shaft, and a pawl carrier 29 loosely secured to said shaft. 30 designates a pawl pivoted to the pawl carrier 29, and 32 designates a spring connecting said pawl to the pawl carrier.

The spring 32 tends to force the pawl into engagement with the ratchet wheel 28, as shown by dotted lines in Fig. I. The arm 21 of the universal bar is provided with an extension 33 (Fig. I) which cooperates with an arm depending from the pawl carrier 29. A spring 36, secured to the universal bar, tends to force the depending arm of pawl carrier 29 into engagement with the universal bar extension 33, said depending arm be ing so arranged between spring 36 and universal bar extension 33, that the pawl carrier will'partake of the movements of the universal bar. It will now be understood 'that the pawl carrier 29, as well as the universal bar, is under the control of the key levers, and that the pawl carrier is adapted to oscillate in response to movements of said key levers. I

When a key is depressed, or when several keys are depressed simultaneously, the universal bar moves forwardly about the axis of pivot member 12, and the pawl carrier 29 turns about the axis of shaft 25 to advance the ratchet wheel 28 one step, thereby turning the

toothed wheels

26 and 27 to unwind the paper and advance it one step. At the end of the paper feeding operation, the printing hammer or hammers 13 force the paper and inking ribbon toward the type to print the selected character or characters. Thereafter, the universal bar and key lever, or levers, return to the positions shown in the drawings, and during this movement the pawl 30 moves idly along the ratchet wheel 28.

The margins of the strip of paper are preferably perforated as shown in Figs. III and IV to receive the teeth which project from the periphery of the feed wheels 26 with the roll of paper, said friction memstraight condition.

bers being secured to the core in any suitable manner, see Fig. IV. A non-yielding friction member 43, engaging the friction member 41, is rigidly secured to a stationary arm 44. 45 designates a yieldable friction member slidably fitted to a spring pocket at the lower end of a stationary arm 46. A spring 47 forces the friction member 45 into engagement with the friction member 42 which turns with the supply roll, at the same time forcing the friction member 41 into engagement with the stationary friction member ,43.' The friction member 45 is provided 25 with a threaded stem which extends through the spring pocket 48, and also with a nut 49 adapted to engage said spring pocket to limit the movement of friction member 45. The roll of paper is supported by small studs 50 which project from the members 43 and 45 at the axis of the roll, and extend into the friction members 41 and 42 which turn with the roll.

The spring pressed friction elements tend to prevent the roll of paper from turning, and upon the operation of the paper feedin device, the paper is pulled along the uncur ing device 6, the latter being a verysmall rod fixed to the arms 39. In passing over the uncurling" device, the strip of paper is turned abruptly in adirection opposed to the direction in which itwas wound on the roll.

By holding the paper under tension a nd uncurling action the tension of the paper gradually increases during the unwinding operation, and this radually increasing tension is preferably oI tained without varying the degree of pressure at the friction surfaces. In this connection it is important to note that the energy for unwinding the roll of paper is transmittedfrom the

feed wheels

26 and 27 to the periphery of the roll, through the medium of the strip of paper.

As the paper unwinds from the roll the point at which the pulling action is exerted gradually approaches the axis of the roll, and the power required to unwind the paper therefore gradually increases during the unwinding operations. The paper travels a fixed distance during each feeding or unwinding operation, but the degreeof rotary To insure the desired movement impart-ed to the roll varies in ac-' cordance with the distance from the center to the periphery of the roll. Owing to these facts the tension of the strip of paper gradually increases in strict accordance with the gradually decreasing diameter to the paper to-be uncurled. This being true the force of the uncurling action gradually increases to compensate for the gradually decreasing diameter of the spirally wound paper.

To illustrate the preferred form of the invention I have shown an automatic shearing

device including blades

51 and 52 located near the rear of the machine and adapted to sever the paper after it passes from the printing, uncurling and feeding devices.

' This automatic shearing device is preferably under the control of the character keys and it is preferably constructed to automatically cut the paper into a series of short uniform strips, which may be easily handled'by the operator, and readily filed for future reference. In this connection it will be noted that the combination of an uncurling device and a shearing device produces a very dcsirable result, for if the paper was not straightened, the small sheets passing from the shearing device would, on account of their tendency to recurl, be quite difficult to handle. It is to be understood, however, that the invention herein disclosed is not limited to the combination of an uncurling device and shearing device.

Briefly stated, the automatic shearing device comprises an operating spring for moving the blade 52, means for transmitting energy from the character keys to said opcrating spring so as to place the latter under tension, and a restoring spring for returning the blade 52. The shear operating device is under the control of atiming device which moves stepby step in response to movements of the character keys, and upon the completion of a predetermined number of paperfeeding operations the timing devicereaches a position wherein it will permit the shear operating spring to actuate movable blade 52, at the same time placing the shear restoring spring under tension. During the operation of the shear the movable blade is released from the operating spring, thus permitting the restoring spring to returnsaid movable blade.

The movable blade 52 (Fig. V) is secured to a frame at the rear of the machine by means of a pivot member 53, and it is provided with an extension 54 adapted to be engaged by a trippable operating member 55, the latter being pivoted at its lower end to a lever 56. This lever 56 is pivoted at 57,

and it is provided with a finger 58 which enby step in response to operationsof the character keys, as will be hereinafter described, thereby lifting the lever 56 and placing the operating spring 60 under tension. When the shoulder 59, on cam 59, reaches the point of finger 58, the shear operating de tension during the cutting operation, however, this spring is not? effective until the movable blade is released from the trippable operatingmember 55. The means for releasing the trippable member comprises a cam 62 formed on said member 55 and adapted to engage a roller 63. 64 designates a spring connect ng the trippable member 55 to the lever 56, and tending to force the cam 62 into engagement with roller 63. upper end of the trippable member 55 has an extension 55' adapted to bear upon the blade extension 54, and adapted to be disengaged therefrom by moving said trippable member to the position shown by dotted lines in Fig. V. During the downward movement of trippable member 55, its cam face 62 moves along the roller 63 so as to release said trippable member from blade 52, thus permitting the restoring spring 61 to return said blade. The shear operating spring is of suflicient strength to actuate the movable cutter and at the same time place the restoring spring 61 under tension.

In a machine-of this kind the elimination of noise is a very important consideration, and the different elements of the automatic shearing device are therefore constructed and arranged to operate in a silent manner. Pads are arranged at certain points to deaden hammer blows, and certain parts of the mechanism are designed to prevent such blows. The spring actuated blade 52 is thrown very quickly, and it lies between a pair of

pads

65 and 66 which limit the movements of said blade. When the cam lever 56 is thrown by the spring 60 it strikes a pad 67 which prevents the cam finger 58 from striking the cam 59 (see dottedlines in Fig. V) thereby deadening the hammer blow at the free end of lever 56,- andavoiding a hammer blow at the cam 59. As the cam 59 continues to. advance it engages the cam finger 58 in a noiseless manner, and the cam lever 56 is gradually shiftedto restore the spring 60 and shear operating member 55 to the position shown by full lines in Fig. V. In moving from the position shown by dotted lines to the position shown by full lines, the trippable operating member 55 moves slowly along the roller 63 until the inclined face 55 of its extension 55' engages the blade extension 54-. The trippable mem- The ber 55 then moves upwardly and away from roller 63, and its extension 55' finally passes over the blade extension 54, to approximately the position shown in Fig. V. The member 55 is pulled to the last mentioned position by the small spring 64, and instead of striking a hammer blow on the roller 63, said member 55 strikes a pad 68. At this time the cam face 62 is separated a slight distance from roller 63, and immediately before the shear is thrown the t-rippable member 55 moves downwardly a slight distance to engage roller 63 and blade extension 54. The parts just referred to are brought into engagement while the trippable member is moving very slowly, thus avoiding loud hammer blows. Thereafter, the shoulder 59' on the timing cam 59 reaches the cam finger 58, and the operating spring 60 then actuates the movable blade as previously described.

The means for driving the timing cam 59 (Figs. I and V) comprises a ratchet wheel 69 secured to said cam, and also secured toa sleeve 70, the latter being secured to a shaft 71. 72 designates a rocker arm loosely supported by the sleeve and provided with a pawl 73 which engages the ratchet wheel 69. A bell crank lever 74, pivotally supported at 75, is provided with a pad 76 which engages the rocker arm 72. 77 desig nates a yieldable link connecting the .universal bar to the bell crank lever 74, see Figs. I and VIII. During each paper feeding operation, the universal bar turns about the axis of pivot member 12 to actuate the paper feeding device, at the-same time operating link 77, bell crank 74, rocker arm 72 and pawl 73, so as to advance the ratchet wheel 69 and timing cam 59 one step. During the return movement of the universal bar, the pawl 73 moves idly along the toothed face of ratchet wheel 69, and the ratchet wheel is prevented from turning backwardly by a friction spring 78 shown in Figs. V and VII. The rocker arm 72 is preferably connected to bell crank 74 by a into ictional engagement with each other. The axis of the rocker arm 72 is at a right angle to the axis of hell crank lever 74 and each of these parts slides with res ect to spring 79 (Fig. V) which forces said parts 4 each other during the operation of eeding and timing cam. The spring 79 yields freely to permit such movement, and by retaining the. parts in frictional engagement with each other it prevents the bell crank lever from striking hammer blows on the rocker arm 7 2.

Upon the completion of a predetermined num er of paper feeding operations, the cam lever .56 is thrown to the position shown by dotted lines in Fig. V, and when in this positionthe cam finger 58 does not engage cam 59, the ob ect being to prevent'the hammer blow on the cam. Since the cam is released from cam finger 58 it tends to overthrow immediately after the parts have been shifted to the position shown by dotted lines in Fig. V, but such action is prevented by the friction spring 78 which restrains the ratchet wheel 69 and cam 59.

An operating member 80 located at the rear of the machine, and fitted to shaft 71 (Fig. I) may be turned to actuate the timing device and movable cutter independently of the character keys. One of the objects of the invention is to cut the paper into uniform sheets, and it is therefore desirable to provide a convenient means for cutting the paper without operating the character keys and paper feeding device. \Vhen a new roll of paper is applied to the machine the, strip is fed, by hand, between the shear blades and through the discharge opening 7 at the rear of the machine. The operator then turns the operating member 80 (Fig. I) so as to actuate the shearing device, thereby lacing the timing device in its starting position so that the first sheet will "be equal in length to all of the other sheets. i

To insure a most effective cutting action, the blade 51 is loosely secured near one of its ends by a screw 81 (Figs. V and VI), the opposite end of said blade being loosely arranged in a groove 82 as shown in Fig. III. The blade 51 interlocked with the frame of the machine through the medium of a dowel pin 83 which extends from said blade into a spring pocket 8% (FigfIII) and a disk 85 extending into a spring pocket 86. A spring 87 arranged in spring pocket 8t lies immediately below screw 81 (Fig. V) and it forces the inner end portion of the blade 51 into engagement with a lug on the blade 52. A spring 88 arranged in spring pocket 86 tends to retain the outer end portion of blade 51 in the path of blade 52, note the dotted lines in Fig. III. Vhen the blades are not in operative engagement with each other the spring 88 retains the cutting edge of blade 51 at an angle to the edge of blade 52, and the spring 87 tends to force the lower portion of blade 51 into the path of blade 52. The yieldable blade 51 is inclined both transversely and longitudinally, and the

springs

87 and 88 tend to retain it in this peculiarly inclined position. By mounting the blades 51 in the manner shown in the drawings, I produce a self-sharpening cutting device and at the same time insure a positive cutting action.

The yieldable blade 51 is free to be adjusted by the blade 52, and the springs and fastening devices are so arranged'that the cutting edges firmly engage each other throughout the cutting operation. At the beginning of the cutting action, the inner end portions of the blades contact with each other. and the outer end portion of blade 51 overlaps blade 52 as indicated by dotted lines in Fig. III. As blade 52 rises it shifts blade 51 laterally against the resistance offered by springs 88, thereby adjusting the yieldable blade to insure the desired contact throughout the operation of severing the paper. Although the cutting edges engage each other, it will be observed that, on account of the inclination of blade 51, the cutting edge of blade 52 does not slide along the face of blade 51. The distance between the fulcrum or axis of the curved blade and the point at which the cutting takes place, gradually increases during the cutting operation, and the power required to actuate the shear, would apparently increase in accordance with the change of leverage. This, however, would be decidedly objectionable, for power of the operating spring 60 gradually decreases during the cutting action; the force of said spring being greatest at the beginning of the cutting operation, and weakest at the end of the operation. To compensate for the gradually decreasing strength of spring 60 and the gradually changing leverage, the blade 52 has a curved cutting edge which is so formed that the angle between the blades gradually increases during the cutting action. Therefore, at the beginning of the cutting action, when the force of the operating spring is most effective, the cutting takes place very rapidly and as the cutting edges advance along the paper the speed of the cutting action gradually decreases, this being due to peculiar contour of the cutting edge of blade 52. Assuming, for example, that the speed of the movable blade is uniform throughout the cutting operation, the speed of the cutting action would gradually decrease in accordance with the gradually decreasing strength of the operating spring.

The printing elements herein shown are claimed in an application filed by me on Nov. 18, 1916', Serial No. 132,07 6. The key lever guide is claimed in an application filed .by myself and IV. E. Lippert on Nov. 18,

1916, Serial No. 132,077. The universal bar is claimed in an application filed by myself and W. E. Lippert on Nov. 18,. 1916, Serial No. 132.078. The paper straightener is claimed in an application filed by me on May 19, 1917,- Serial No. 169,620. The paper feeding device is claimed in an application filed by myself and W. E. Lippert on Nov. 18, 1916, Serial No. 132,066.

I claim:

1. In a shorthand machine adapted to receive a continuous strip of paper, a print a shearing device located at the path of the paper and at a point beyond said printing and feeding devices.

2. In a shorthand machine adapted to receive a continuous strip of paper, a shorthand printing device for printing shorthand characters, line by line, on the strip of paper, a paper feeding device for feeding the paper step by step to and from said shorthand printing device, and means for cutting the continuous strip of paper into uniform sheets, said means being operable automatically upon the completion of a predetermined number of feeding operations.

3. In a shorthand machine adapted to receive a continuous strip of paper, a printing device for-printing lines of shorthand characters on the strip of paper, shorthand keys for operating said printing device, a paper feeding device under the control of said shorthand keys, said paper feeding device being movable step by step to feed the paper to and from said printing device, and means for cutting the strip of paper into uniform sheets, said means being under the control of said shorthand keys.

4. In a shorthand machine adapted to receive a continuous strip of paper, a printing device for printing lines of shorthand characters on the strip of paper, shorthand keys for operating said printing device, a shearing device for cutting the strip of paper into uniform sheets, a feeding devlce for feeding the strip of paper from sa d printing device to said shearing device, said printing and shearing devices being under the control of said shorthand keys, and the shearing device being operable automatically upon the completion of a predetermlned number of feeding operations.

5. In a shorthand machine adapted to receive a continuous strip of paper, a' printing device for printing lines of shorthand characters on said strip of paper, shorthand keys for operating said printing devlce, a

shearing device for cuttingthe strip of paper into uniform sheets, a paper feeding device for feeding the strip of paper from'said printing device to said shearing device, sa d paper feeding device being operableby said shorthand keys, and meansyunder the control of said shorthand keys, for operating said shearing device upon thecompletion of a predetermined number of feeding operations, said means including a timing device movable step by step in response to movementsof said shorthand keys.

6. In a shorthand machine adapted to receive a continuous strip of paper, a printing device for printing lines of shorthand characters on the paper, shorthand keys for operating said prmtin device, a unlversal bar under the control 0 saidshorthand keys,

a paper feeding device operable by said universal bar, and an automatic shearing device for cutting the strip of paper into uniform sheets after it passes from said printing device, said automatic shearing device Eemg under the control of said universal 7 In a shorthand machin adapted to receive a continuous strip of aper, a printing device for printing lines o shorthand characters on the paper, shorthand keys for operating said printing device, a universal bar under the control of said shorthand keys, a paper feeding device operable by said universal bar, and an automatic shearing device for cutting the strip ofpaperv into uniform sheets after it passes from said printing device, said automatic shearing device including a timing device movable step by step in response to the operations of saiduniversal bar, and cutting means under the control of said timing device."

8. In a typewriting machine adapted to receive a strip of paper, a printing device, keys for operating said printing device, and an automatic shearing device for severing the paper, said automatic shearing device being operable independently of said keys.

9. In a typewriting machine adapted to receive a strip of paper, a printing device,

keys for operating said printing device, and an automatic shearing device for severing the paper, said automatic shearing device being operable independently of said keys, and said automatic shearing device being movable in response to operations of said keys.

10. In a typewriting machine adapted to receive a strip of paper, a printing device,

keys for operatingsaid printingdevice, and an automatic shearing device including a timing device movable step by step in response to operations of said keys, and means for operating said timing device independently of said keys. 1

11. In a typewriting machine adapted to .11

receive a strip of paper, a printing device, keys for operating said printing device, and an automatic shearing device including a timing cam movable step by step in response to operations of said keys, and means, independent of said keys, for operating said timing cam.

12. In a typewriting machine adapted to receive a stri of paper, a printing device, keys for operating said printing device, and an automatic shearing device including a movable cutter, a spring for operating said cutter, a timing device for releasing said spring, said timing device being movable in response to operations of said keys, and means, under the control of the operator, for moving said timing device independently of said keys.

13. In a typewriting-machine adapted to receive a strip of paper, a printing device, keys for operating said printing device, an

automatic shearing device including a movable cutter, a spring for operating said outter, a timing device including a cam for releasing said spring, a ratchet wheel for driving said cam, said ratchet wheel being movable in response to operations of said keys, a shaft to which said cam and ratchet Wheel are secured, and means, independent of said keys, for rotating said shaft.

14. In a typewriting machine adapted to receive a continuous strip of paper, a printing device for printing lines of characters on the paper, a keyboard including keys for operating said printing device, a paper feeding device operable by said keys, and an automatic shearing device for cutting the paper into substantially uniform sheets, said automatic shearing device comprising a movable cutter, and means for transmitting energy from said keys to said cutter.

15. In a typeWriting machine adapted to receive a continuous strip of paper, a printing device for printing lines of characters on the paper, a keyboard including keys for operating said printing device, a paper feed ing device operable by said keys, and an automatic shearing device for cutting the paper into substantially uniform sheets, said automatic shearing device comprising a mova ble cutter, a spring for operating said out ter, and means for transmitting energy from said keys to said spring.

16. In a typewriting machine adapted to receive a continuous strip of paper, a printing device for printing lines of characters on the paper, a keyboard including keys for operating said printing device, a paper feeding device operable by said keys, and an automatic shearing device for cutting the paper into substantiallv uniform sheets, said automatic shearing device comprising a movable cutter, a spring for operating said outter, and means for transmitting energy from saidkeys to said spring, said means including a transmission member movable step by step in response to operations of said keys.

l7. In a typewriting machine adapted to receive a continuous strip of paper, a printing device for printing lines of characters on the paper, a keyboard including keys for operating said printing device, a paper feeding device operable'by said keys, and an automatic shearing device for cutting the paper into substantially uniform sheets,

said automatic shearing device comprising a movable cutter, a spring for operating said cutter, means for transmitting energy from said keys to said spring, said means including a ratchet and pawl movable step by step in response to operations of said keys.

18. In a typewriting machine adapted to receive a continuous strip of paper, a printing device for printing lines'of characters on the paper, a keyboard includlng keys for operating said printing device, a paper feeding device operable by said keys, and an automatic shearing device for cutting the paper into substantially uniform sheets, said automatic shearing device comprising a movable cutter, a spring for operating said cutter, and means for gradually stretching said spring, said means being movable step by step in response to the operations of said keys.

19. In a typewriting machine adapted to receive a continuous strip of paper, a printing device for printing lines of characters on the paper, a keyboard including keys for operating said printing device, a paper feeding device operable by said keys, and

an automatic shearing device for cutting the paper into substantially uniform sheets, said automatic shearing-device comprising a movable cutter, a spring for operating said cutter, and means for transmitting energy from said keys to said spring, said means including a controlling device for releasing said spring upon the completion of a. predetermined number of key operations.

2O.v In a. typewriting machine adapted to receive a continuous strip of paper, a printing device for printing lines of characters on the" paper, a keyboard including keys for operating said printing device, a paper feeding device operable by said keys, and an automatic shearingdevice for cutting the paper into substantially uniform sheets, said automatic shearing device comprising a movable cutter, a spring tending to move said cutter, and means for releasing said spring upon the completion of a predetermined number of key operations.

21. In a typewriting machineadapted to receive a continuous strip of paper, a printing device for printing lines of characters on the paper, a keyboard including keys for ing device operable by said keys, and an automatic shearing device for cutting the paper into substantially uniform sheets, said automatic shearin device comprising a movable cutter, a sprlng tending to move said cutter, and means for releasing said spring upon the completion of a predetermined number of key operations, said means including a controlling device movable step by step in response to the movements of said keys.

22. In a typeWriting machine adapted to receive a continuous strip of paper, a printing device for printing lines of characters on the paper, a keyboard including keys for operating said printing device, a paper feed ing device operable by said keys, and an automatic shearing device for cutting the said cutter, and means for releasing said spring upon the completion of a predetermined number of key operations, said means including a cam movablestep by step in response to movements of said keys.

23. In a typewriting machine adapted to receive a continuous strip of paper, a printspring upon the Completion of a predetermined number of key operations, said means including a ratchet Wheel movable step by step in response to movements of said keys, and a cam movable with said ratchet Wheel.

24. In a typewriting machine adapted to receive a continuous strip of paper, a punting device for printing lines of characters on the paper, a keyboard including keys for operating said printing device, a paper feeding device'operable by said keys, and an automatic shearing device for cutting the paper into substantially uniform sheets, said automatic shearing device comprlsmg a movable cutter, and a trippable actuating member adapted to be released during the operation of said movable cutter.

25. In a typewriting machine adapted to receive a continuous strip of paper, a printing device for-printing lines of characters on the paper, a keyboard including keys for operating said printing devlce, a paper feeding device operable by said keys, and an automatic shearing device for cuttin the paper into substantially uniform s eets, said automatic shearing device comprising a movable cutter, an actuating member for moving said cutter, and means for releasing said actuating member after it has shifted said cutter.

26. In a typewriting machine adapted to receive a continuous strip of paper, a printing device for printing lines of characters on the paper, a keyboard including keys for operating said printing device, a paper feeding device operable by said keys, and an automatic shearing device for cutting the paper into substantially uniform sheets, said .automatic shearing device comprising a movable cutter, an actuating member for throwing said cutter, and means for shifting said actuating member to an ineffective position during the operation of said cutter.

27. In a typewriting machine adapted to receive a continuous strip of paper, a printing device for printing lines of characters on the paper, a keyboard including keys for operating said printing device, a paper feeding device operable by said keys, and an operated said cutter.

automatic shearing device for cutting the paper into substantially uniform sheets, said automatic shearing device comprising a movable cutter, a trippable operating member fitted to said movable cutter, a spring tending to move said trippable member, and means for releasing said.trippable member after it has actuated said movable cutter.

28. In a typewriting machine adapted to receive a continuous strip'of paper, a printing device for printing lines of characters on the paper, a keyboard including keys for operating said printing device, a paper feeding device operable by said keys, and an automatic shearing device for cutting the paper into substantially uniform sheets,

said automatic shearing device comprisinga movable cutter, a spring actuated member for operating said movable cutter, and a cam for shifting said spring actuated member to an ineffective position after it has 29. In a typewriting machine adapted to receive a continuous strip of paper, a printing device for printing. lines .of characters on the paper, a keyboard including keys for operating said printing device, a paper feeding device operable by said keys, andan automatic shearing device forcutting the paper into substantially uniform sheets, said automatic shearing device comprising a movable cutter, an actuating member for operating said movable cutter, means for driving said actuating member, means for releasing said actuating member after it has operated the cutter, and means for restoring said actuating member to its operative position. 30. In a typewriting machine adapted to receive, a strip of paper, a printing device, and an automatic shearing device for severing the paper, said automatic shearing device including a movable cutter, a trippableoperating member for actuating said cutter, a spring for driving said trippable operating member, a cam, an anti-friction device adapted to engage said cam to release said trippable member, a spring tending to force said cam into engagement with said anti-friction device, and a pad for stopping said trippable member before said cam engages said antifriction device.

31. In a typewriting machine adapted to receive a strip of paper, a printing device for printing on the paper, a keyboard including keys for operating said printing device, a paper feeding device, and an automatic shearing device for cutting the paper, said automatic shearing device including a movable cutter, an operating spring for actuating said cutter, and a restoring spring for returning said cutter.

32. In a typewriting machine adapted to receive a strip of paper, a printing device for printing on the paper, a keyboard ineluding keys for operating said printing device, a paper feeding device, and an automatic shearing device for cutting the paper, said automatic shearing device including a movable cutter, an operating spring for for printing on the paper, a keyboard in- .cluding keys for operating said printing device, a paper feeding device, and an automatic shearing device for cutting the paper, said automatic shearing device including a movable cutter, an operating spring for actuating said cutter, and a restoring spring for returning said cutter, said operating spring being adapted to place the restoring spring under tension during the cutting- --..for printing on the paper, a keyboard inoperation.

34. In a typewriting machine adapted to receive a strip of paper, a printing devicefor printing on the paper, a keyboard including keys for operating said printingdevice, a paper feeding device, and an automatic shearing device for cutting the paper,

said automatic shearing device including a movable cutter, a drive member for operating said cutter, an operating spring for actuating said drive member, and a restoringspring for returning said cutter.

35. In a typewriting machine adapted to receive a strip of paper, a printing device for rinting on the paper, a keyboard including keys for operating said printing device, a paper feeding device, and anautomatic shearing device for cutting the paper, said automatic shearing device includ mg a movable cutter, a drive member for operating said cutter, an operating spring for actuating said drive member, a restoring spring or returning said cutter, and means for releasing said drive member to permit said restoring spring to return said cutter after the cutting operation.

tuating said drive member, a restoring spring for returning said cutter, and means for rendering said drive member ineffective durin the return movement of said cutter.

37. n a'typewriting machine adapted to receive a strip of paper, a printing device for rinting on the paper, a keyboard including keys for o erating saidprinting device, a paper fee ing device, and an automatic shearing device for cutting the paper,

for printing on the paper, a keyboard including keys for o eratmg said printing device, a paper fee ingdevice, and an auto matic shearing device for cutting the paper, said automatic shearing device including a movable cutter, an operating spring for actuating said cutter, a restoring spring for returning said cutter, and means for transmitting movement from said keys to said operating spring.- I

39. In a typewriting machine adapted to receive a strip of paper, a printing device 'cludmg keys for operating said printing devi'ce,'.a paper feeding device, and an autotuating said cutter, a restoring spring for returning said cutter, and means for transmitting movement from said keys to said operating spring, said means including a member movable step by step in response to operations of said keys.

' 40. In a typewriting machine adapted to receive a strip of paper, a printing device for printing on the paper, a keyboard including keys for operating said printing device, a paper feeding device, and an automatic shearing device for cutting the paper, said automatic shearing device including a movable cutter, means for transmitting movement to said cutter, said means including an operating spring which is gradually tensioned in response to operations of said i keys, and a restoring spring adapted to be placed under tension during the cutting operation.

41. In a typewriting machine adapted to receive a strip of paper, a printing device for rinting on the paper, a keyboard including keys for operating said printing device, a paper feeding device, and an automatic shearing device for cutting the aper, said automatic shearing device including a movable cutter, a drive member mova 1y fitted to said cutter, a cam lever to which said drive member is secured, a cam for operating said cam lever, said cam being movable by saidv keys, an operating spring for forcing said cam lever into engagement with said cam, said operating s ring being gradually tensioned during t e operations of said keys, and said operating spring being adapted to actuate said cam lever, drive member and movable cutter, and means for releasing said drive member from said movable cutter while said cutter is in motion.

42. Ina typewriting machine adapted to receive a strip of paper, a key actuated printing device, a paper feeding device, and an automatic shearing device for cutting the paper into uniform sheets, said automatic shearing device comprising a timing device includin a member movable step 1 y. step, and a friction device for retarding said member.

43. In a typewriting machine adapted to receive a strip of paper, a printing device, a keyboard including keys for operating said printing device, a paper feeding device, and an automatic shearing device for cutting the paperv into uniform sheets,'said automatic shearing device including a timing device movable step by step in response to operations of said keys, and a member tending to retard said timing device.

44. In a typewriting machine adapted to receive a strip of paper, a printing device, a keyboard including keys for operating said printing device, a paper feeding device, and

an automatic shearing device for cutting the paper into uniform sheets, said automatic shearing device including a movable cutter, a cam for controlling said cutter, a ratchet wheel associated with said cam, said ratchet wheel being movable step by step in response to operations of said keys, a spring actuated arm provided with an abutment which engages said .cam, means for transmitting movement from said arm to said movable cutter, said parts being so. constructed that said abutment is disengaged from said cam during a period of time in which the ratchet wheel is driven by said keys, and a friction member tending to retard said cam.

45. In a typewriting machine adapted to receive a strip of paper, a printing device, a keyboard including keys for operating said printing device, a paper feeding device, and an automatic shearing device for cutting the paper into uniform sheets, said automatic targets abutment which engages said cam, means for transmitting movement from said lever to said cutter, a stop for limiting the move-" ment of said lever to prevent said abutment from strikingv said cam when the said abutment passes from the offset portion of said cam, a feeding device formoving said cam in response to movements of said keys, and a friction device for restraining said cam when said abutment is disengaged therefrom.

. 46. In a typewriting machine adapted to receive a strip of'paper, a printing device, apaper feeding device, keys for operating said devices,' and an automatic shearing device for cutting the paper, said automatic shearing device including a drive member operable by said keys, a driven member fitted to said drive member, and means for forcing said members into engagement with each other.

47. In a typewriting machine adapted to receive a strip of paper, a printing device, a paper feeding device, keys for operating said device, and an automatic shearing device for cutting the paper, said automatic shearing device including a drive member operable by said keys, a driven member slidably fitted to said drive member, and a spring for retaining said members in engagement with each other.

48. In a typewriting machine adapted to receive a strip of paper, a printing device, a paper feeding device, keys for operating said devices, and an automatic shearing device for cutting the paper, said automatic shearing device including a drive member operable by said keys, a pawl carrier driven by and slidably fitted to said drive member, said pawl carrier being arranged at an angle to said drive member, and a spring connecting said pawl carrier to said drive member.

' WARD s. IREND.