US694117A - Type-writing machine. - Google Patents

Description

Patented Feb. 25, I902. B. C. STICKNEY, 7

TYPE WRITING MACHINE.

(Application filed Dec. 8, 1900.; (N o M o d e I.) I

2 sheets-sheet l.

Q a w i i FIG- 1.

WITNESSES: I? H 77? v INVENTUR B. C. STICKNEY.

TYPE WRITING MACHINE.

Patented- Feb. '25, I902.

(Application filed Dec. 8', 1900.;

2 Sheets-Sheet (N0 Model.)

' TNVENTDR UNITED STATES PATENT ()FFICE.

BURNI-IAM C. STICKNEY, OF ELIZA-BETH, NEW, JERSEY, ASSIGNOR TO UNION TYPEWVRITER COMPANY, OF JERSEY CITY NEW JERSEY, A CORPORA- TION OF NEW JERSEY.

TYPE-YVRITING MACHINE.

SPECIFICATION forming part of Letters Patent No. 694,1 17, dated February 25, 1902.

Application filed December 8, 1900. Serial No. 39,179. (No model.)

To (all whom it may concern.-

Be it known that I, BURNHAM O. STIOKNEY, a citizen of the United States, and a resident of Elizabeth, in thecounty of Union and State of New Jersey, have invented certain new and useful Improvements in Type-Writing Machines, of which the following is a specification. This application relates to the case-shift [O mechanisms of type-writing machines in which a heavy mass, such as a cylindrical platen and its frame or an entire type-bar system, has to be shifted each time that a capital letter is to be written. The touch of [5 the shift-key in such machines differs materially from the touch of the type-keys, the

' former being harder to operate. The resistance of a shift-key to a staccato touch, or to such a sharp touch as is usually given to the type-keys, is very great, and for this reason it is found necessary to depress the shift-key more slowly than the others. Not only is time lost, but the operation of the shift-key is usually so laborious as to render it objec- 2 5 tionable, besides which it is necessary for the operator to learn one kind of a touch for the type-keys and a different kind of a touch for the shift-key.

One object of the present invention is to 0 provide such connections between the shiftkey and the platen or the type-bar system, as the case may be, that said shift-key may be depressed as quickly as any type-key and without shock to the finger of the operator.

5 A further object is to enable the leverage or purchase of the shift-key upon the shiftable platen or type-bar system to be altered at will, so that the machine may be adjusted for a deep shift-key stroke or :dip with extremely light key resistance or for a shorter stroke with more resistance, according to the preference of the operator.

Other objects will hereinafter more fully appear. 1

5 My invention consists in certain combinations of devices, features of coustructiomand combinations of parts,all as will be more fully herein afterset forth, and particularly pointed out in the appended claims.

In the accompanying drawings my inven-, tion is shown as adapted to the platen-shift mechanism of a Remington No. 6 type-writing machine, certain parts being omitted and others broken away to more clearly exhibit the invention and like parts being designated by like numerals of reference.

Figure 1 is a vertical longitudinal sectional view of'the platen-shift mechanism in nor mal position. Fig. 2 is a fragmentary plan, partly in section, of the shift-key lever and an adjustable bracket upon which it is fulcrumed. Fig. 3 is a fragmentary elevation showing the relation of the key-lever to the fulcrum-plate at the moment that the shiftkey is fully depressed. Fig. 4 is a skeleton View similar to Fig. 1, but showing the positions of the parts at the time that the shiftkey is half-way depressed. At this figure are illustrated in dotted lines both the initial and final positions of the key and the shifter-bar. 7r Fig. 5 is a fragmentary sectional elevationillustrating the preferred form of key-lever rocker and fulcrum. Fig. 6 is a front sectional elevation taken at about line X X of Fig. 2.

I designates the left-hand side wall of the base of a Remington machine, 2 one of the corner-posts, and 3 the top plate or type-ring. An inwardly-turned box-like rim, consisting of a horizontal plate or portion t and a downweirdly-directed flange 5, is cast integrally with the side wall 1 at the upper edge thereof. An L-shaped bracket, designated generally as 6 and comprising a vertical member 7 and a horizontal inwardly-extending arm 8, rests against the inner vertical face of the wall 1, in which position it is supported by a screw 9. The upper end of the vertical part 7 is thickened at 10, so as to fit between the wall land the flange 5.

Upon, the upper surface of the inwardlyexteilding arm 8 is erected an individual housing for therear end of a shift-key lever 11 of the second order. Said housing is designated generally as 12 and is formed from a 5 singlepiece of sheet metal comprising vertical sides 13, a top or plate 14, and outwardlyturned cars 15 at the lower ends of the sides a key 19.

. journaled a cylindrical platen 32.

12, said ears being secured upon the upper surface of the arm 8 by screws 16. The sides 13 prevent lateral displacement of the lever. The top 14 of the housing is prolonged forwardly and rearwardly, so as to overlie the key-lever for a considerable portion of the length of the lever, for which it affords a bearing, the upper edge of the lever being constantly in contact with the lower surface of the fulcrum. A cross-pin 17 may be provided in the housing to engage a vertical slot 18, cut in the key-lever, so as to prevent endwise displacement of the latter while permitting it to work freely in a vertical plane.

The lever 11 extends forwardly to the keyboard of the machine, its front end bearing Upon the lever, between its ends, is placed a strap 20, to whose upper end is pivoted at 21 the chape 22 of an upwardly-extending hook or link 23, the lower end whereof is threaded and tapped into the chape, so that the link may be adj nsted vertically without detachment from the key-lever.

The upper end of the link 23 hooks over a pin or screw 24, which is so supported upon a vibratory or rocking frame (designated generally as 25) that a downward pull upon the link causes the frame to swing upon its axis or shaft 26, said shaft extending horizontally across the machine and being journaled in opposite'hangers 27, which depend from the top plate 3. Besides the shaft 26 the rocking frame comprises a pair of upwardly-extending arms 28, whose tips are united by a bar 29, which is the shifter-bar of the machine, and is slidably engaged by a yoke 30, the latter being suitably connected to a rectangular traveling frame or carriage 31, in which is At any point in the letter-spacing movement of the carriage across the machine the yoke 30, and

hence the carriage 31 and platen 32, may be shifted rearwardly by the shifter-bar 19 of the rocking frame 25. Said pin 24, which is engaged by the upper end of the link 23, is not fixed directly upon the shifting frame 25, but instead extends laterally from an upright lever 33, which is pivoted at its lower end upon the projecting pointof a screw 34, the latter being tapped into the lower end of a curved arm 35, which is formed integrally with the lefthand rocker-arm 28 and extends downwardly toward the key-lever system of the machine. The vibration of the lever 33 upon said pivot is limited by a screw orpin 36, which passes through an arc-shaped slot 37, formed in said lever concentrically with the pivot 34. A slot 38, also formed in the lever 33, is engaged by a lateral projection 39, formed upon the end of a lever 40,1.vhich is provided with a handle 41 and is pivoted upon a shouldered screw42, tapped. into the lower end of a downwardly and forwardly extending arm 43, which is cast integrally with the arms 35 and 28. The vibration of the lever is limited by a stopscrew 44, which is tapped into the arm 43 and engages an arc-shaped slot 45 cut in the lever concentrically with the pivot 42. Upon a pin 46, projecting laterally from an upwardly-extending car 47, formed upon the lever 40, is

caught the upper end of a draw-spring 48,

whose lower end hooks into a screw-eye 49, which is tapped into a horizontal cross-bar 50, formed integrally with the base 1. The lower end of the spring may bedisengaged from the screw-eye and the latter may be screwed in or out, thereby causing the spring after reconnection to exert more or less tension. The function of the spring 48 is to return the rocking or shifting frame 25, the carriage or platen frame, and the key-lever. to normal position after actuation. Those parts above mentioned, which are numbered from 20 to 50, inclusive, are commonly used in said Remington machine and need not be further described.

When the parts are in normal position, the forward or lower-case type 51 upon each typebar 52 of the usual type-bar system strikes the platen upon a depressionof its connected key; but if the shift-key 19 should be first depressed the rod 23 would be pulled down,

and through the rocking frame 25 and yoke 30 the carriage and platen would be shifted rearward ly, so that the rear or capital type 53 upon the bar would make an impression, the position of the shifter-bar 29, platen, and shift-key at this time being indicated bydotted lines at Fig. 1. Upon the relief of the shift-key from pressure the spring 48 would return the severalparts to normal position.

As usual, the handle 41 may be thrown up, thereby swinging the lever 40 so that the upper end of the spring 48 is carried rearwardly sufficiently to swing the rocking frame back until it is arrested by the usual stop 54,which is secured upon the top plate. During the lifting of the handle 41 the projection 39 swings the lever 33 forwardly upon the pivot 34 and the pin 24 is carried so far forward that a downward pull of the link 23 would cause the rocking frame 25toswing forwardly. Hence the key 19 is used for efiecting a shift of the platen in either directionthat is, for shifting it rearwardly at will when the lever 41 is in its lower position and for shifting it forwardly at will when said lever has been swung up and the parts thereby set to the position for printing capital letters.

It will be observed that the front end of the fulcrum or fulcrum-plate 14 terminates near the load-point 21 of the key-lever, and that said fulcrum curves rearwardly and upwardly, its rearportion being out of contact with the key-lever, which normally touches the forward portion of the fulcrum-plate. During the depression of the key, however, the point of contact between the lever and the fulcrum-plate moves or shifts rearwardly, or, in other words, the extended rear end of the lever contacts with the fulcrum at successive points until at the completion of the stroke the rear extremity of the lever contacts with the rear extremity of the fulcrum,

, carriage, and the shifting frame 25. Owing 1, 3, and'4. At thest-art the fulcrum-point of the key-lever being close to its load-point the key is given a powerful leverage or purchase upon the heavy parts that are to be put in motion, inclusive of the platen, the platento this purchase the resistance to the touch when'the finger strikes the key is materially reduced and the shock is little, if any, greater than is experienced upon touching oneofthe type-bar-operating keys. As the keymoves down the bearing-surface or edge of the keylever rocks or creeps along the f ulcrum-plate, whereby the fulcrum-point of the lever is caused to shift or move rearwardly during the depression thereof.- At Fig. 4 is illustrated the positions of the parts'when the key has made one-half of its downstroke, and it will be observed that the shifter bar or rail 29 has been moved only one-fourth of its rearward stroke, the platen having been moved, of course, a like distance. Hence the work done during half of the key-stroke is not greater than that done by the first quarter of the key-stroke in machines as usually constructed, and the working strain endured by the finger of the operator is greatly reduced. The shift-key may be given the same sharp touch that is usually given to the typekeys and the shift efiected more promptly.

Although the remaining three-fourths of; the platen-shift movement are accomplished during the remaining half of the key-stroke, still no additional strain is put uponthe finger during the last part of the stroke, because the heavy parts are Well under way and the normal continued pressure .of the finger upon the key is suflicient to accelerate the com: parative velocity of the rocking frame and carriage. In other words, the force exerted by or stored up in the downwardly-moving hand of the operator'is gradually absorbed by the moving mass in the machine and the hand is gradually brought to a stop without,

objectionable jar or shock, upon the same principle that is followed in theconstruction of steam-engines, in which the heavy piston and piston-rod are gradually stopped at each stroke without jar, their momentum being absorbed by the heavy fly-wheel. I Owing to the automatic decrease in the leverage or purchase of'the key 19 upon the shifting mass as the key-le'ver-rocker rolls along the fulcrum-plate 14 the platen movesv much more rapidly at thelast part of the stroke than at the beginning, so that'its rapid motion at the terminal portion of the stroke compensates for its comparatively slow motion at the start. The shift may thus be effected in less time than practicable heretofore in this style'of m achine, because the keymay be depressed at high speed without giving the operators finger a shock andthe movement of the platen occupies 'no more'time than the movement of the key, Hence by this part of my invention a threefold object is attained viz., the shift may be effected in less time than formerly practiced, the. finger has less resistance to overcome'when striking the key,

and during the last part of the key-stroke the momentum of the handis gradually absorbed, thus reducing materially the shock heretofore felt at the completion of the stroke. My improvement will therefore enable the more general employment of the comparatively weak fourth or little finger of the left. hand in effecting the case shift, thus enabling the remaining fingers of the same hand to be employed to a useful extent in depressing the type-keys while the shift-key is held,

down. 1 Referring now more particularly to Figs.

1, 2, and 6, it will be seen that the bracket 6 is provided with a forwardly-extending arm 55, whose frontend is forked at 56 and bestrides the lower end of a verticaladjusting screw 57, the latter-being tapped into the horizontal flange-plate 4 of the'side wall 1.- Said screw is provided with collars 58, be

tween which the forkedend of said arm 55 is confined, and it may also be provided with a finger-piece or knurl59 at its upper project-' ingend. By turning the-finger-piece the screw may be raised or lowered, and by means of the arm 55 the bracket 6 may be tipped or caused to swing upon the pivot or journal 9,

the latter having been previously loosened, if necessary,'in order'to permit the described swinging movement or adjustment of the bracket and subsequently tightened, so as to hold the bracket rigidly in its new position.

The function of the mechanism just described is to enable an alteration to be effected atwill in the inclination of the curved fulcrum-plate 14, which of'course moves with the bracket. Thus if. the arm 55 is tipped downwardly the rear end of said fulcrum will be tipped upwardly and become more separated from the rearend of the key-lever extension, so that it will'require a greater stroke of the lever in effectinga shift of the platen, f

and hence the stroke of the key will be deeper and the resistance to the finger-touch gener ally lighter. On'the other hand, if the arm 55 be elevated the rear end of the fulcrum 14 will be tipped downwardly and the key-lever will be enabled to efiect the platenshift by a shorter stroke, the dip of the key thus being lessened and the resistance to the fingertouch being generally greater; Hence after the spring48'is given enough tension by'the usual adjustment of the screw-eye 49 to effect a prompt return of the parts to normal position the bracket 6 and its fulcrum-plate14 maybe adjusted so as to give less or more resistance to the finger-touch with a deep or shallow key-stroke, as may suit the requirements of individual operators.

Itwill'be understood that many operators who have occasion to write at high speed desire a strong tension to be put upon the spring 48, so thatthe latter may readily overcome the inertia of the 'platen' and other heavy parts and restore the same quickly to normal position, so as to' avoid the liability of the next-operated type making an impression before the platen has completed its return or forward movement to normal position, which would impair the alinement of thewriting or cause a blurred impression of both the types upon the bar, and it will be perceived that even though the tension of the spring be greatly increased still an agreeable touch upon the finger-key may be secured by adjusting the bracket 6 so as to slightly elevate the rear end of the fulcrumplate 14.. It will be further understood that at the initial part of the return stroke the spring 48 has the greatest leverage uponfthe key, so that it may not only control the carriage but may also assist in the recovery or' upward movement of the operators finger. Thus both the down and up strokes of the key may be effected in lesstime than has been practicable heretofore in this type of machine and the speed of operation correspondingly increased. It will also be understood that whether" the handle 41 is in its normal depressed position or in its abnormalelevated positionthat is, whether the mechanism is' set for writing lower-case or capital letters-the action of the IeVerage changing devices is the same, always giving a soft key-touch and quick stroke.

The overbalancing-weight of the forward end of the key-lever insuresconstant contact of the upper edge of the extended rear end of the key-lever with the under side'of the fulcrum 14. By vertical adjustment of the link 23 the normal position of the key 19 may be made lower or higher, as usual.

Referring now to Fig. 5, it will be seen that the fulcrum-plate 14. is straight, while the working upper edge of the keylever extension is convexly curved at 11. It will be understood that the convex key-lever rolls upon or along the straight plate in the same manner that the straight key-lever rolls along the convex plate shown in other figures.

Although I have illustrated my invention as applied to a Remington machine, it will be understood thatit ma be adapted in whole or in part to otherstyles of machinesas, for instance, those in which the system of typebars is shifted while the platen remains stationary andin which itis necessary to overcome the difiiculty of shifting a comparatively heavy mass in a comparatively short time with a comparatively weak finger-power. Many other jchanges may be made inldetails of construction and arrangement within the] scope of the invention. It is not essential that the shift be made ina horizontal direction or that the platen travel over the types or that the detail connections herein illustrated be employed'between the shift key and the'shifti'ng mass. 1 a a Portions of the invention may be adapted for other purposes-as, for instance, the individual housing for the key-lever, which is constructed to serve as a leverage-changing fulcrum for the lever. The term individual is employed to distinguish this form of housing or fulcrum from a fulcrum adapted to serve for an entire system of type-operating key-levers.

What I claim as new, and desire to secure by Letters Patent, is as follows:

1. In thecase-shift mechanism of a typewriting machine, the combination, with a platen and a type system, one of which elements is shiftable, of a shift-key lever, a fulcrum along which the lever has a leveragechanging rocker movement, and connections from said lever to said shiftable element.

2. In the case-shift mechanism of a typewriting machine, the combination with a platen and a type system, one of said elements.

being shif table, of a lever operated by a shiftkey, a fulcrum device extending along said lever, one of said fulcrum and lever elements being formed with acurved rocker portion, and connections from said lever to said shiftable element.

said rocker works, and connections from said lever to said shiftable element. 7

4-. In the case-shift mechanism of a typewriting machine, the combination with a platenand a type system, one of said elements being shiftable, of a lever having at one end a key and at the other end a rocker, a fixed fulcrum upon which said rocker works, and connecting devices extending from a point between the rocker and the key to said shiftable element.

5. In the case -shift mechanismof a type- ,writing machine, the combination with a platen and atype system, one of said elements being shiftable, of a horizontal lever extending to the keyboard and having a key at its forward end and also having its rear upper edge constructed to rock, a fixed fulcurn overlying the rocker portion of said lever, and connecting devices extending from a point between the rocker and the key to said shiftable element. I

p 6. In thecase-shiftmechanism of a typewriting machine, the combination with a platen and a type system, one of said elements being shiftable, of an un pivoted key-operated shift-lever and means for automatically decreasing the purchase or leverage of the lever during the depression of thekey, said lever being operatively connected to said shiftable element. 1

7. In the case-shift mechanism of a typewriting machine, the combination with a platen and a typesystem, one of said elements being shiftable, of an unpivoted key-lever connected to said shiftable. element andhaving an extended end, and a fulcrum with which S. In the case-shift mechanism of a typewriting machine, the combination with a platen and a type system, one of said elements being shiftable, of an unpivoted operating-lever for said shiftable element, a fulcrum with which said lever contacts at successive points during the operation thereof, and means for preventing endwisedisplacement of said lever.

9. In the case-shift mechanism of a typewriting machine, the combination with a platen and a type system, one of said elements being shiftable, of an unpivoted operating-lever for said shiftable element, a fulcrum-plate arranged longitudinally of said lever, pin 17, and slot 18. a

10. In the case-shift mechanism of a typewriting machine, the combination with a platen and a type system, one of said elements being shiftable, of a lever bearing a key, a shifting frame suitably connected to one of said shiftable elements, and mcans, including a link attached at one end to said lever and at the other end to said shifting frame, for antomatically decreasing the purchase of said lever upon said shifting frame during the depression of the key.

11. In the case-shift mechanism of a typewriting machine, the combination with a platen and a type system, one of said elements being shiftable, of a lever bearing a key, a vibratoryframe mounted upon the framework of the machine and operatively connected to said shiftable element, and means, including a link attached at one end to said lever and at the other end to said vibratory frame, for automatically decreasing the purchase of said lever upon said vibratory frame during the depression of the key.

12. In the case-shift mechanism of a typewriting machine, the combination with a platen and a type system, one of said elements being shiftable,of a shifting frame operatively connected to said shiftable element, a key-lever having a rocker, a fulcrum along which said rocker creeps, and a link connecting said lever directly to said shifting frame.

13. In the case-shift mechanism of a typewriting machine, the combination with a platen and a type system, one of said elements being shiftable,of ashif ting frame operatively connected to said shiftable element, a lever having a key at one end and a rocker at the other end, a fulcrum along which said rocker creeps, and a link attached at one end to said lever at a point between the rocker and the key, and connected at the other end to said shifting frame.

14. In a type-writing machine, the combination of a platen-frame, a key-controlled lever, a fulcrum along which said lever has a leverage-changing rocker movement, and operative connections extending from said lever to said platen-frame.

15. In a type-writing machine, the combination of a platen-frame, a vibratory frame mounted on the framework of the machine and operatively connected to said platen-frame, a key-operated lever connected to said vibratory frame, and a fulcrum device extending along said lever, one of said fulcrum and lever elements being formed with a curved rocker portion.

16. In a type-writing machine, the combination of a platen-frame, a key-lever of the second order operatively connected thereto and having a curved rocker, and a straight fulcrum upon which said rocker works.

17. In a type-writing machine, the combination of a platen-frame, a vibratory shifterframe operatively connected thereto, a horizontal'lever having at its forward end a key and at its rear end a rocker, a link connected at one end to said vibratory shifter-frame and at the other end to said lever at a point between the key and the rocker, and a fixed fulcrum upon which said rocker works.

18. In a type-writing machine, the combination of a horizontal lever extending to the keyboard of the machine and hearing at its forward end a key and at its rear end a rocker, a vibratory shifter-frame above said lever, a link connecting said lever to said shifterframe, and a platen operatively connected to said shifter-frame.

19. In a type-writing machine, thecombination of a platen-frame, an unpivoted shiftlever operatively connected thereto, a key for said lever, and means for automatically decreasing the purchase or leverage of said lever upon said platen-frame during the depression of the key.

20. In a type-writing machine, the combination of a platen, an nn pivoted key-lever operatively-connected thereto and having an extended end, and a fulcrum with which said extended end contacts at successive points' during the operation of the key. 21. In a type-writing machine, the combination of aplaten, an unpivoted operatinglever therefor, a fulcrum with which said lever contacts at successive points during its operation, and means for preventing endwise displacement of said lever.

22. In a type-writing machine, the combi- IIO nation of key-lever 11 having a rocker 11",

fulcrum-plate 14c, link 23, shifter-frame 25, platen-frame 31, and platen 32.

23. In the case-shift mechanism'of atypewriting machine, the combination with a platen and a type system, one of said elements being shiftable, of a fin ger-key operatively co'nnected to said shiftable element, and means for effecting an adjustment of the leverage of the key upon said shiftable element.

24. In the case-shift mechanism of a typewriting machine, the combination with a platen and a type system, one of which elements is shiftable, of a key-operated lever operatively connected to said shiftable element,

and means for effecting an adjustment of the leverage of said leverupon said shiftable element. I

25. In the-case-shift mechanism ofatypewriting machine, the combination with a platen and atype system, one of said elements being shiftable, of a lever operatively con-" nected to said shiftable element, a fulcrum for said lever, and means for adjusting the relation of the lever to the fulcrum in such a manner as to alter the purchase of said lever upon said shiftable element.

26. In the case-shift mechanism of a typewriting machine, the combination with a platen and a type system, one of said elements being shiftable, of a lever operatively connected to said shifting element, a fulcrum for said lever, and means for adjusting said fulcrum so as to alter the purchase of said lever upon said shiftable element.

27. In the case-shift mechanism of a typewriting machine, the combination with a platen and a type system, one of said elements being shiftable, of a lever having a key at one end, a fulcrum for the other end of said lever, said fulcrum being adjustable so as to change the purchase of said lever, and connections from said lever to said shiftable element.

28. In the case-shift mechanism of a typewriting machine, the combination with a platen and a type system, one of said elements being shiftable, of a lever connected to said shiftable element, a fulcrum extending along said lever, and means for tipping said fulcrum.

29. In a typewriting machine, as a new mechanical movement, the combination of a keyoperated lever, a fulcrum extending along said lever, and a pivot or journal for said ful crum.

30. In a type-writing machine, as a new me chanical movement, the combination of a keyoperated lever, a fulcrum extending along said lever, a pivot or journal for said fulcrum, and an adjusting-screw.

31. In the case-shift mechanism of a typewriting machine, the combination with a platen and a type system,one of said elements being shiftable, of a lever connected to said shiftable element, a bracket pivoted upon the framework of the machine, and a fulcrum fixed upon said bracket and extendinglongitudinally of said lever.

32. In the case-shift mechanism of a typewriting machine, the combination with a platen and a type system, one of said elements being shiftable, of a lever connected to said shiftable element, a bracket pivoted upon the framework of the machine, a fulcrum fixed upon said bracket and extending longitudinallyof said lever, and an adjusting-screw.

33. In a type-writing machine, the combination with a shiftable platen, of a finger-key, and means for altering at will the leverage or purchase of said key upon said platen.

34. In a type-writing machine, the combination with aplaten, of a depressible key-lever operatively connected thereto,and means for effecting an adjustment of the leverage of said lever upon said platen.

35. In a type-writing machine, the combination of a platen, a shiftable platen-frame, a lever operatively connected to said platenframe, a fulcrum for said lever, and means for adjusting the relation of said lever to said fulcrum in such a manner as to alter the purchase of said lever upon said platen-frame.

36. In a type-Writing machine, the combination of a platen, a shiftable platen-frame, a lever, connections extending from said lever to said platen-frame, a fulcrum for said lever, and means for adjusting said fulcrum so as to alter the purchase of saidlever upon said platen-frame. l

37. In a type-writing machine, the combination with a platen and a shiftable platenframe of a lever connected to said platenframe and bearing a finger-key atits forward end, and a fulcrum for the rear end of said lever, said fulcrum being adjustable so as to change thepurchase of said lever upon said platen-frame.

38. In a type-writing machine, the combination with a platen and a shiftable platenframe, of a key-operated lever, afulcrum extending along said lever, means for tipping said fulcrum, and connections extending from said lever to said platen-frame.

39. In a type-writing machine, the combinationwith a platen and a shiftable platenframe of a key-operated lever and a pivoted fulcrum extending along said lever.

40. In a type-writing machine, the combination with a platen and a shiftable platenframe of a key-operated-lever, a pivoted fulcrum extending along said lever, and an adj ustin g-screw.

41. In a type-writing machine, the combination with a platen and a shiftable platenframe, of a lever connected to said frame, a bracket pivoted in the base of the machine, and a fulcrum fixed upon said bracket and extending longitudinally of said lever.

42. In a type-writing machine, the combination with a platen and a shiftable platenframe, of a horizontal lever hearing at its forward end a key, a fulcrumoverlying the rear end of said lever, said fulcrum extending lon gitudinally of said lever and being arranged upon a bracket which is pivoted in the base of the machine, and connections from said lever to said platen-frame.

43. In the case-shift mechanism of a type- IIC writing machine, the combination with a platen and a type system, one of said elements being shiftable, of a finger-key operatively connected to said shiftable element in such a manner that the leverage or purchase of the key upon said shiftable element automatically decreases during the keystroke, andmeans for'altering at will the leverage of said key upon said shifting element. r

44. In the case-shift mechanism of a typewriting machine, the combination with aplaten and a type system,one of said elements being shiftable, of a key-operated leveroperatively connected to said shiftable element in such a manner that the leverage or purchase of said lever upon said shiftable element automatically decreases during the stroke of the lever, and means for altering at.

platen and a type system, one of said ele-' ments being shiftable, of a lever operatively connected to said shiftable elemen t, a fulcru m along which said lever has a leverage-ch anging rocker movement, and meansfor adjust: 5

ing the relation of the lever to the fulcrum.

46. In the case-shift mechanism of a type-.

Writing machine, the combination with a platen and atype system, one of which elements is shiftable, of a lever operatively connected to said shiftable element, a fulcrum along which said leverhas a leveragechangplaten and atype system, one of which ele-v ments is shiftable, of a-lever operatively connected to said shiftable element, a fulcrum along which said lever has a leverage-changing rocker movement, and means for tipping said fulcrum.

48. In the case-shift mechanismof a typewrit-ing machine, the combination with a platen and a type system, one of said elements being shiftable, of a lever having a key at one end, a fulcrum along which the other end of said lever has a leverage changing rocker movement, means for adjusting said fulcrum, and connections from said lever to said shiftable element.

49. In a type-writing machine, as a new mechanical movement, the combination "of a key-operated lever, a fulcrum along which said lever has a leverage-changing rocker movement, and a pivot or journal for said fulcrum.

50.- In a type-writing machine, as a new mechanical movement, the combination of a key-operated lever, a fulcrum along which said lever has a leverage-changing rocker movement, a pivot or journal for said fulcrum, and an adjusting-screw.

51. In the case-shift mechanism of a typewriting machine, the combination with a platen and a type system, one of said elements being shiftable, ofa lever connectedto said shiftable element, a fulcrum along which said lever has a leverage-changing rocker movement, and a bracket upon which said fulcrum is fixed, saidbracketbeing pivoted upon the framework of the machine.

'52. In a type-writing machine, the combination with a shiftable platen, of a finger-key so connected to the platen that the purchase or leverage of the key upon the platen decreases automatically during the key-stroke,

and means for altering at will the leverage of said key upon said platen;

53. In a type-writing machine, the combi-' nation with a shiftable platen, of a depressible key-lever so connected to the platen-that the purchase or leverage of the lever upon the platendecreases automatically during the key-stroke, and means for altering at will the leverage of said lever upon said. platen.

54. In a type-writing machine, the combination of a platen, a shiftable platen-frame, a lever, connections extending from said 1ever to said platen-frame, a fulcrum along: which said lever has 'a leverage-changing rocker movement, and-meansfor altering at will the position of said fulcrum. r

55. In a type-writingmachine, the combination with a platen and a shiftable platenframe of a lever connected to said platenframe and bearing a finger-key at its forwardend, and an adjustable fulcrum along which the rear end of the lever has a leverage-changing rocker movement.

56. In the case-shift mechanism of a typewriting machine, the combination with a platen and a type system, one of said elements being shiftable, of a finger-key operativelyv connected to said shiftable element, means for effecting an adjustment of the lev-- erage of the key upon said shiftable element, and an adjustable returning-spring for said'shiftable element.

57. In a type-writing machine, the combination with a platen and a shiftable platenframe of a leveroperatively connected to said platen-frame, means for effecting an adjustment of the purchase of said lever upon said platen frame,-and an adjustable returning spring for said platen-frame.

58. I In the case-shift mechanism of a typewriting, machine, the combination with a platen and a type system, one of said elements being shiftable, of a finger-key so connected to said shiftable element that the leverage or purchase of said key upon said shiftable .element decreases automatically during the key-stroke, mechanism for altering at will the purchase of said key upon said shiftable element, and an adjustable returning-spring for said shifting element. I

59. In a type-writing machine, the combination with a platen and a shiftable platen frame of a lever operatively connected to said platen-frame, an adjustable fulcrum along which said lever has a leverage changing rocker movement, and an adjustable return ing-spring for said platen-frame.

60. In a type-writing machine, a key-openated lever provided withfan individual fulcrum so constructed and arranged that during its operation the lever contacts withthe fulcrum at successive p'oints,whereby the lev- 61. In a type-writing machine, a key-operated lever provided with an individual fulcrum so constructed and arranged that during its operation the lever contacts with the fulcrum at successive points, whereby the leverage of the lever is decreased, said fulcrum being suitably supported upon the framework of the machine, and having devices formed integrally therewith for preventing sideWise displacement of the lever.

62. In a type-writing machine, a key-operated lever and a housing therefor, said housing serving as a fulcrum for the lever, and the construction and arrangement being such that during its operation the lever contacts with the fulcrum at successive points, whereby the leverage of the lever is decreased.

03. In a type-writing machine, a key-operated lever provided with an adjustable housing, whereby the leverage of said lever may be altered at will.

64. In a type-writing machine, a key-operated lever provided with an adjustable housing, one portion of said housing serving as a fulcrum for the lever, and the construction and arrangement being such that during its operation the lever contacts with the fulcrum at successive points, whereby the leverage of the lever is automatically decreased.

65. In a type-writing machine, a key-operated lever provided with an individual fulrum so constructed and arranged that during its operation the lever contacts With the fulcrum atsuccessive points,whereby the leverage of the lever is decreased, said fulcrum being suitably supported upon the framework of the machine, and having means for preventing sidewise and endwise displacement of the lever.

66. In a type-writing machine, a key-operated lever provided with a housing,said housing serving as a fulcrum for the lever, and the construction and arrangement being such that during its operation the lever contacts, with the fulcrum at successive points, Whereby the leverage of the lever is decreased, said lever being provided with a slot,and said housing being provided with a device for engaging said slotand preventing endwise displacement of said lever.

Signed at New York city, borough of Manhattan, in the county of New York and State of NewYork, this 1st dayofDeeember, A. I).

BURNI-IAM O. STIOKNEY. Witnesses:

K. V. DONOVAN, E. M. erms.

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