US954912A - Type-writing machine. - Google Patents

Description

E. B. BARNEY. TYPE WRITING MACHINE.

- APPLIUATION FILED MAB. 171909. 954,912. Patented Apr. 12,1910.

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1||5 ATTURNEY E. E. BARNEY.

TYPE WRITING MACHINE. APPLICATION FILED MAB. 17, 1909.

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UNITED STATES PATENT OFFIOE.

EDWIN E. B ARNEY, F SYRACUSE, NEW YORK, .ASSIGNOR TO THE MONARCH TYPE- WRITER COMPANY, 0F SYRACUSE, NEW YORK, A CORPORATION OF NEW YORK.

TYPE-WRITING MACHINE.

Specification of Letters Patent.

Patented Apr. 12, 1910.

To all whom if may concern:

3e it known that I, EDWIN E. BARNEY, a c'itlzen of the Unit-ed States, Vand resident of Syracuse, in the county of Onondaga and '5 State of New York, have invented certain new and useful Improvements in Type- VVrltlng Machines, of which the following is 'a specification.

My invention relates to typewriting machinos and more particularly t-o fractional platen of a typewliting machine having my4v invention embodied therein, 'part of the carnage being also shown 'and parts being 2 5 broken away, and the clutchv shown in nor- `mal orclutching position. Fig. 2 is a simil lar View ofthe en d of the platen on which the line space wheel is 'mounted and some of' the connected' parts, but -showing the clutch in released position. Fig. 3 is an isometric view'of. one of the platen heads.

@is a face View of the line space Wheel Fig.

Aan the Adogs and wedges ofthe clutch.

F igs. 5 and 6 are fragmentary front views.-l s howlngthe operatingdevices for the platen clutch, Fig. 5 showing the parts in normal or clutching position and Fig. 6 showing the.

'parts in released position. Fig. 7 is a fraglin entfary. view`in sec tion on the line --mlof 40 131g. 5 and look-ing inthe direction of the.

arrow at said line. In this figure the parts .are shown in full linesY in normal position and broken linesin operated or releasing position. Fig. 8 is a fragmentary topview vpartly 1n irregl'i-larLsection and .with 'parts brekenewar My invention is a to various stylesof t pewritingmachines 5 0 I' have' he're shown it applied to a" Monarch typewrlter-iandtq a-'platen clutchA like that shown in the British patentv to-'Fell No. 28,219'of 1906. The laten. clutch shown in .said-*Blgitish patent,;; ike most 'other platen My invention consists'in certain features.

plicable or adaptable and to .various'so'rts o platen clutches, butV clutches, is operated to 'release the platen f from the line space wheel by moving' a part longitudinally' of the platen axle. It is one of the purposes of the present invention'to make certain improvements in devices for ope-rating these clutches by a lever or other devicel that is mounted in the platen .frame and situated in a. more convenient position than these longitudinally movable parts and that moves in another direction and will .be automatically retained in either of the positions to which it' is set, thus leaving the hands of the operator free to turn the platen orto adjust the paper or to dowliatever else may be necessary while the clutch is disconnected. Operating devices that have -to be moved by hand longitudinally of the platen, have usually involved a .divided platen axle orl some modificationof the bearings orsupports of the platen,.vvh ich tend to complicate the mechanism and to weaken important parts of said mechanism. In

'some fhrms of these platen clutches thev llilaten'knob or finger wheel itselfA is movable longitudinally; in others the platen shaft by'means of the fingerv wheel. If the knob that has to be pushed is situated at the left-handend ofthe platen, then, when said knob is operated, there is a liability to move the platen backward infletter space` direc tion. One of the purposes of my invention is to operate the platen clutch bymeans n ot open to 'any of these several objections.

The carriage of the Monarch typewriter comprises two end pieces or brackets ..1 and 2which support the platen 3, Said platen Vis provided with a shaft 4 whiclris journaled in bearing bushings 5 which pass through -suitable.openings in the bracketsl and 2 where they are rigidly secured by set screws (i. The platen is' provided with 'a4 right-hand platen head? which is rigidly fixed tothe shaft 4 by means of a setscrew ,.8'. In this machine the line space Wheelrv is at the left-hand end of the platen and the left-hand platen head J has the linefspace.

wheel 10 mounted thereon. The platen heads are secured to the wooden core of' the platen' -by Wheels 4*. The left-hand face of the platen head 9 is formed with three projections havingbearing surfaces -14 on which the lin'e space wheel bears `in such-fash1onthatwhen' the clutch is released the line Wheel and 'platen headare free "to `turn the one with .relation tothe other! Ulf-he line space wheel has an internalilan f in which internal V- shaped teeth 15 aredrmed and itis the points' of these teeth thatr'ide on the bearing surfaces 111. Three rectangular ra'- dial openin 1 6 between'the projections 13,' serre as guide-ways for dogs 17 which-are niounted. 1nv` said openings I0 tooth-p1'8vadaptedto'enter the notches be tween the teeth of the line space Wheel. These dogs are? normally lpressed `1nto engagement with the teethgl by means of 4Wedges 2O Which'ar'e seated in holes 21 formed' longitudinally of; the platen in, anv

. inwardextension 220i the platen head 9. The AWedges .20 are pressed toward the left 4.space wheel can more than one ofthe teeth- 1, 8be bottomed in 'one' of theI notches. be-

tween theteeth 15.` In Figa'1 the fparts'areV shown'in-sucha positinthatone 'Lof'fsaid teeth V18 is pressed tothe 4bottoni Offene ofV the notches. When theplaten and'line space v 3.5y Wheel vhappen tooee'upy this jrelatiye ..1 posi.'-

tion it wil lone ofthe teeth 15'1'11 Suche .wey-as to prel 1.64 `withj freedom to slide radially in and out, Eachl of theseV dogs has at its outer end a chisel or V-shaped bycoiled s rings 23v oorx'ipressed between the: Hbottoms o the 'holes 21 and the ends of the the corresponding dogl'?. -The :spacing of bev noted 'that onefof-v..the :other teeth 18 is pressedIgsug'ainst onefofthejfteethy d "1 5 insuch a way as to-preyent relative mo# .-tion ofthe line spa'ce `Wheelandplaten 'in one direction and the third'tooth` 1Sen'gage`s r'e'taining said line space wheel in position. The line .s ace wheel 10 may havev crown ratchet' teet 1'0., whieh are engaged by the Y line space pawl 28 nd'also by the-'usual de-v tentrollerv29. j f 70 .-*InorderV to release the 'platen clutch, a sleevejSOis sldably mounted on the shaft 4: td thejgleft` of the platen head 9'al1d4` this Sleveiat its right hend end is enlarged'into a 'disk 30l which is adapted to engageY leftward4 prolongations 31 .of-'the Wedges 20' so :thatwhen the disk is moved ltoward the right it pushes all of said wedges toward the wed es, leaving 'said dogs free to move in- 8"'0 War toward the shaft 4 to a suieient-extent to release them from theteeth 15. The disk '30? isv formedwith' an internal coned sur-'1 vface 32 which, when said disk is'mo'vedto- Ward the` right, is -znapted'ftov engage' inclined surfaces 33 formed on the toes of the. dogs 17 the constrdctionbeing such that the coned surface 32 earns vthe dogs v17 positively inward out of engagement Withthe'teeth 15.

The retaining Y"plate 2 5-fis? formed with a -cup Shaped part 34he`Yi1gf-an -intigirnedlan e, 35., '-Seid cnpsjhapedfpartj; recei'fsresft e enlarged innepdisk-:likeend of the sleeve.

a positionsv s vown 1 reventggniotlon of thej platen s V :relatively to tie -l'ineispa'cerwheel infone-di-f h rection` andatle'astone -ofpvsaidfte'ethwill l V preventirelative mo'tionffof -Vthe-pperts vin the@ other direction; so-that said 'linspace ndYits-flso hes i uter' foldo'ffthe'spifin 3 4with 'freedom -to'rektahout '1 u right and v releases the dogs 17 from said t l' Shown in Fig. by the tension of the spring 36 but when the lever is pulled toward the front of the machine it cams said spring 36 toward the right and said spring carries the sleeve 30 with it toward 'the right, thus releasing the clutch. I prefer not to have the cam 41 act directly onv the sleeve 30 which sleeve rotates with the platen and I have therefore interposed between the cam and sleeve the forward end of the spring which is a part mounted in the platen frame with freedom to move longitudinally of the,

platen,'and which is held against turning with the pla-ten.v The upper part of the cam edge 41erniiiiatesin a dwell and a rounded stop portion 45. The cam part of the lever has its left-hand edge 46 straight and this straight part of the lever contacts with .the boss 1EL on the bracket 1 or with the end of the bushing 5 so that the lever is not cramped in its bearing on the nut 38. As the upper part of the cam edge 41`is a dwell, the lever 42 will remain in the position shown in Fig. 6 until it is pushed back by hand so that when the platen clutch is released itA will. remain in released position until restored to normal position by moving Athe handle 4 3 toward'tlie rear of the machine.

The present invention isan improvement i on the construction forming the subjectmatter of the application of Jacob Felbel, filedl March 1st, 1909, Serial No. 480,548. By` pivoting the handle and cam back of or eccentric to the platen shaft I am enabled to give a longer throw to the cam for a given extent of motion of the free end of the handle than in the prior construction. This enables me to use a cam having a more gradual inclination than in said prior construction, with the result `that the cam operates with less friction. Moreover, I have reduced the number of rubbing surfaces which also reduces the friction. The

construction as a whole works with the apyplication of much less power; and the andle, on` its return stroke, snaps back when.Y only lightly struck by the hand of the operator, thus saving time in restoring the clutch.

. It will be noted that when the arts are in normal position the spring 36 is out of contact with the end of the sleeve 30. This allows a slight lost motion between the spring and the sleeve which gives the handle will also be understood that various changes lever 42 is normallyl held in the position l operation. It will, of course, be understood that the devices described may be readily applied oi adapted to other forms of platen clutch tliaii that shown in tliedrawings.' It

may be made in the details of construction and arrangement without departing fromk my invention.

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

1. In a typewriting machine, the combination of a rotary platen, a line space wheel, a releasable clutch normally locking said line space `Wheel and platen to turn together, a handle pivoted to the platen frame at a distance from the platen axle and having its pivotal axis parallel to the axis of the platen so as to move iii a plane transverse to the platen axis for re easing said clutch, and means intermediate said handle and said clutch for'traiismitting ,motion from said handle to said clutch. i

2. In a typewriting machine, the combination of a rotary platen, a line space Wheel for said platen, a releasable clutch for normally causing said platen and line space wheel to turn together, a handle arranged to be operated in a plane transverse to the platen axis, a part mounted onthe platen frame forv motion longitudinally of the platen and operated by lsaid handle, and means operated by said part for moving a part of said clutch longitudinally of the' platen in oi'der to release said clutch.

3, In a typewriting machine, the combi- 100 nation of a rotary platen, a. line space Wheel for said platen,l a releasable clutch for normally causing said platen and line lspace wheel to` turn together, a liandle'ar- .trically of the platen axis'and operated by said handle for moving a partof said clutch longitudinally of the platen in order to release said clutch.

4. In a typewriting machine, the combination of a platen, a line-space wheel for said platen, a releasable clutch connecting said line s ace wheel and platen, a device mounted directly-oli the platen frame and free to move endwise of the platen but held aga-inst turning about the laten axis, means operated by said vdevice or releasing said clutch, anda handle mounted in the lplaten frame for operating said device.

5. -In a typewriting machine, the combination of a platen, a line space wheel for said platen, -a releasable clutch connecting -said line space wheel and platenta device mounted directly on the platen frame and free to Vmove endwise of the platen but held against turning about the laten axis, means operated by said device or releasing said clutch, and a handle mounted in the platen frame for operating said device, there being lost motion between said clutch and said endwisemovable device.

"6. In a typewriting machine, the combination of a platen, a line space Wheel for said platen, a releasable clutch connecting said line space Wheel and platen, means for releasing said clutch comprising a part movable endwise of the platen, and means for` operating said releasing means including a plate spring and a cam movable transversely of the platen and operating said sprmg. 1

7. In a typewriting machine, the combination cfa platen, a line space yvheel for saidfplaten, a releasable clutch connecting said line space wheel and platen, means for' releasing said clutch comprising a part movable endwise of the platen, and means for operating said releasing means including a plate spring and a cam movable transversely of the`platen and operating said spring, the tension of said spring being eX- erjted on 4said cam to hold said handle in normal position.

8. In a typewriting machine, the combination of a platen, a line space Wheel for n said platen, a releasable clutch connecting said line space Wheel and platen, a handle i ysaid line space Wheel and platen, asleeve slidable longitudinally of the platen shaft for releasing said clutch, a plateelile part mounted directly7 on the platen frame and embracing said platen shaft and adapted to operate said sleeve, means preventing said plate-like part from turning with the platen, a handle mounted in the platen vframe, and

mea-ns operated by said handle to move said plate-like part longitudinally of the platen to release the clutch.

Signed at Syracuse, in the county ot Onondaga and State of New York this 13th day of March A. D. 1909.`

EDWIN yE. BARNEY.

Vitnesses:

G. B. BRAND, W. C. HAY.

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