US1132908A - Type-writing machine. - Google Patents

Description

entre sans .aar entre.

ARTHUR 3. BRIGGS', OF SYRACUSE, NEW YORK, ASSIGNOR T O REMINGTON TYPEWRITER COMPANY, OF ILION, NEW YORK, A CORPORATION OF NEW YORK.

TYPE-WRITIN G MACHINE.

Specification of Letters Patent.

Patented Mar. 23,1915.

Application led April 17, 1914. Serial N0. 832,475.

@L rlhis invention relates to improvements in fractional line-spacing mechanisms, or platen-clutches, of typewriting machines, the main object of the invention being to produce a satisfactory platen-clutch of, an especially simple and compact construction.

'lhe invention consists of a clutch that has the features of construction hereinafter described and specitied in the claims and that normally connects together a cylindrical platen and line-spacing Wheel, Abut enables the platen to be separately rotated when mounted as usual in a paper carriage.

In the accompanying drawings, in which like reference numerals designate like parts in the dilierentviews, Figure 1 is a front view and vertical section of this clutch, and the linespacing Wheel and a fragment of the platen of a typewriting machine; l1`ig. 2, a perspective of the body of the clutch; Fig. 3, a perspectire of the line-spac1ng wheel; Fig. l, a perspective of a case in which the line-spacing ivheel tits; Fig. 5. a

perspective of a part of the clutch; Fig/6,'

in end view of the clutch and line-spacing wheel, at the left of the plane a', fr, Fig. 1; Fig. T, a cross-section of the clutch on the plane y, y, Fig. 1; Fig. 8, a side vienY of the clutch, line-spacing wheel and fragment of the platen; and Fig. 9, an enlarged cross-section, on the plane e, s, Fig. 1, of the hub of the linger-wheel and a push-rod Within it.

rllhe platen 1 is made fast as usual (pref` erably at the end not shown) to the platen shaft 2, comprising also the tubular part 3 in which are slots I`l; and loosely litted in these slots is a block 5 which extends transversely through the tubular part 3, and is movable transversely and axially of the shaft but constrained to turn with it. The edges or surfaces 6 of this block (Fig. 7) are ilat, except at its outer end where they curve as shown and form faces of small projections '7, and in the outer end of the block is a notch or recess The inner end 9 of this block rests against acoiled spring l0 contained in the tubular part 3 of the shaft 2,

which latter may be of any suitable length, though only a. small part of the solid portion 2 is illustrated. The spring 10 tends to force the block outward, or from the platen.

The body of the clutch comprises a slotted, cylindrical block, the slot forming recesses 13 and dividing the block into parts 14 and 15 which have surfaces 16 and 17, each being a part of a cylindrical surface. The head 11 has a flange 1S which extends outward from the surfaces 16 and 17. TWO j amb blocks 19 and 2O lit loosely in the recesses 13, the outersurfaces 21 of these blocks being curved to form continuations of the surfaces 16 and 17 of the body. The inner surfaces 22 of these jamb-blocks are flat. The line-spacing Wheel 23 is a ring having a cylindrical inner surface 24, a cylindrical outer surface a head 11 and a hub 12 25, crown teeth 26, and notches or depres,

sions 27 in which ts the detent 28 (F ig. 6). A cylindricalcase 29is ai lxed to the end of the platen by screws 30.A

The line-spacing wheel extends into the case 29, the outer edge of which bears against the shoulder of the Wheel at the inner ends of the notches 27,- and the body of the clutch extends into and through the line-spacing wheel, the surfaces. 16 and 17 of the body fitting loosely Within the surface 24 of the wheel, and the iiange 18 'of the body being close to the wheel and surrounded by the crown teeth 26. Hence the wheel is loosely confined between the case 29 and the liange 18 so that either vthe Wheel or platen may be separately turned on the platen-axis. The hub 12 ofthe body Hts snugly on the part 3 of the platen-shaft to which it is fastened by screws. 31, and the block 5 is in the'body, between the parts 14: and l5, the axis of the platen passing through the block. Balls 32 are contained in the recesses 13 in the body' between the block 5 and the liamb-blocks 19 and 20, these blocks and the sides of the recesses 13 forming ball-retaining walls, and the balls bear on the surfaces 6 of the block 5 and the flat faces 22 of the jamb-blocks. The bearing surfaces 6 of the block 5 slope very slightly, so that the planes in which they lie meet at a point on the axis of the platen, remote from the clutch, the block being approximately a hundredth of an inch Wider at the end 9 than it is next to the inner ends against the inner surface 24 of the linespac.

'ing wheel, .so that it and the platen are clutched together.' Then the action of the block 5-on the balls is that of a wedge, and since this block or wedge is loose in the slots 4, so that the whole block is movable toward and from either ball, both balls and both jamb-blocks will be tightly held between the wedge and thesurface 24, even'if one ball is slightly larger than the other, or if one jamb-block is slightly thicker than the other. Consequently this block or wedge is so movable, when it is forced by the spring to act -on the balls', that it compensates automatically for small inequalities in the balls and' jainh-blocks, such as are apt to exist and would be apt to have a bad effecten the action of the clutch unless the block or wedge -could move transversely of theplaten-axis.'

The finger-wheel 33 ofthe platen is fast on a hub and sleeve or shbrt shaft 34 which extends into the hollow part 3 of the platen shaft and is lfastened therein by the. screws 3,1, which pass through holes in the part 3 nd bear at'their inner ends against iiattened parts of the shaft 34. A push-rod 35 eX- tends loosely through the shaft 34: and-.into the recess 8 1n the block 5, this push. rod having at its outer end a the hub 34 is a screw 37, and in the rod 35 are recesses 38 and 39 (Figs. 1 and 9) the inner ends of which cov-act with the screw 37 to limit the axial movement of the rod.

To release the platen from -the line-spaeing wheel, and enable the platen tobe separately rotated 'to any desired extent, the push-'rod or releasing device is pressed in- .ward until the outer end ot the recess 38' in the rod is close to the screwv 37 The rod may then be locked b turning. it so as to bring the inner end o the recess 39 behind the screw. The push-rod forces the block 5,

inward lengthwise of the common axis of the platen,` line-spacing wheel and clutch, and the block rolls the balls axially of the platen and the clutch and from its head 11, vand when the block is at the inner end of its movement .where it exerts' no pressure on spacing wheel, and. either the platen or `heel may be separately .rotated in either `irection.v When the push-rod is turned again, so as to nger-butto'n 36. In

the jamb-blocks- 19 and 2O are bring the ends of the recess 38 into alinement with the screw 37, and the spring 10 is allowed to move Vthe block 5 outward, vthe balls are rolled by the block toward 'the l jamb-blocks areforced'by the balls tightly against the Aline-spacing wheel, and thereafter the platen wlll be rotated by the' linespacing mechanism 'as though' the spacing wheel were ahxed immediately tolthe platen, this mechanism comprising, for example, a handle and a pawl such 'as are usually contained in Yost machines, the pawllbeing 'operative on the crown teeth 26 to turn. the line-spacing wheel. 1 f

lt will be understood that the invention can be embodied in mechanism diering more vorless in details of construction from that which has been described herein. What I claim as new and desire to secure by Letters Patent, is

l. In a typewriting machine, comprisin a cylindrical platen and aline spacing whee separately movable on a common axis, a connecting rotary clutch including apair fof rollers and a device which extends between them and has opposite faces on which'the head 11 of the clutch and the rollers act when the platen-and line spacingV e wheel are clutched together, said device being movable in the directions in which the rollers travel as they roll upon it, and being further movable ,bodily toward each roller when that roller is loose.

2. In av typewriting machine, comprising a cylindrical platen and a line vspacing wheel separately movable' on a common axis,

a connecting clutch having ball-retaining walls, and including balls,`each ball being .between outer and inner .walls the bearingV verselyof said axisand operativeon thel balls to roll'them axially of the clutch.

4. In a typewriting machine, comprising a cylindrical platen and a lline-spacing wheel separately movable on a common axis', a connecting rotary clutchlincludng balls and a evice on which the balls bear and through fof said device being in converging' planes ."that meet at a point on said`axis remote ,l from the clutch and said device being constrained to turn with the laten and being movable lengthwise of sai axis and opera,-4

Lwhich said axis passes, the bearing surfaces tive on the balls to roll them axially of the clutch.

5. In a typewriting machine, comprising a cylindrical platen anda line-spacing wheel separately movable on a common axis, a connecting rotar .clutch including outer ballretaining wal s, a pair of balls,and a4 device which forms inner ball-retainingfwalls and through which said axis passes, the'bearing i0 surfaces of said outer walls sloping'toward a point on said axis remote from the clutch, and said device being movable lengthwise and transversely of said axis and operative on the balls to roll them axially of the clutch. y

(l. ln a typewriting machine, comprising a cylindrical platen and a line-spacing whccii separately movable on a common axis, a connecting rotary clutch including outer ballretaining walls, a pair of balls, and a device which forms inner ball-retaining walls and through which said axis passes, the bearing surfaces ot' said outer walls and of said device sloping toward points on said axis that are remote from and on one side of the clutch and said device being movable lengthwise o said axis and operative on the balls to roll them axially of the clutch.

i'. In a type\\'i'iting machine, comprisinf1r :i0 a cylindrical platen and a line spacing whee separately movable on a common. axis, a connecting rotary clutch having ball-retaining walls, and including balls, a spring, and a releasing device, some of said walls being normally n'essed against the balls by the spring and being movable by the releasing device lengthwise of said axis and against the force of the spring to roll the balls axially of the clutch and being further mov- 40 able transversely of said axis.

8. In a typewriting machine, comprisin a cylindrical platen and a line-spacing whee separately movable on a common axis, a connecting clutch includin balls,'a bloclc on which the balls bear an through which said axis passes and which is movable lengthwise and transversely of the axis, a

spring thatacts lengthwise of said axis, and

a releasing device the block being coneo strained to turn with the platen and being normally pressed against the balls by the spring and being movable by the releasin device against the force of the spring to ro the balls axially of the cluteh.

9. In a typewriting machine, comprising a cylindrical platen and a line spacing whce separately movable on a common axis, a connecting clutch includin balls, a block which fits in longitudinal s ots in the platen e0 shaft and on which the balls bear, a spring contained in the platen shaft` and -acting against the block, and a releasing device, the block being normally ressed against the e balls by the spring and lbeing movable by platen-shaft and .surrounded the releasin device against the force of the e5 sprin to ro l the balls axially oi the clutch. 10. n a typewriting maclune, comprising a cylindrica platen and a line-spacing wheel separately movable on a common axis, a connecting clutch including a recessed 70 body, jamb-blocks, balls, and a device on which the balls bear and through which said axis passes, the body being fast on the by the linespacing wheel, the jamb-bloelis, balls and said device being in the body, the balls boing between the jamb-blocks and said device, and the jamb-blocks being between the balls and line-spacing wheel, and said device being movable lengthwise el said axis and operative on the balls to roll them axially of the clutch.

11. In a t pewriting machine, comprising a eylindricailplaten and aline-spacing wheel separately movable on a common axis, a con- 8a necting clutch including a recessed body, Iamb-blocks,balls, and a device on which the alls bear and through which said axis passes, the body beine' fast on the platenshaft and surrounds( by the line-spacing J0 wheel, the jamb-blocks, balls and said device being in the body, the balls being between the )amb-blocks and said device, and the jamb-blocks being between the balls and linepacin wheel, the bearing surfaces ol' said ao evice eing in'converging planes that meet at a point on said axis remote from the clutch, and said device being constrained to turn with the laten and being movable lengthwise of said axis and o ierative on'the bals to roll them axially of tlhe clutch.

12. In a typewriting machine, comprising a cylindrica platen and a line-spacing wheel separately movable on a common axis, a connectin clutch including a recessed body, jamb-bloc cs, balls, and a device on which the balls bear and through which said axis passes, the body bein tast on the platenshaft Aand surroundeda by the line-spacing wheel, the-jamb-blocks, balls and said device 110 beine inthe body, the balls being between the ]ambblocks and said device, and the jamb-bloeks being between the balls and lincspacing wheel, the inner homing-surfaces ol tie jamb-bloclcs sloping toward a point on said axis remote from the clutch, and said device being movable lengthwise of said axis and -operative on the balls to roll them axially of the clutch. y

13. In a typewriting machine, comprising a cylindrica platen and a line-spacing wheel separately movable on a. common axis, a conneeting clutch, including a recessed body, Jamie-blocks, balls, and a device on which the balls bear and through which said axis passes, the body being fast on the platen shaft and .surrounded by the line spacing wheel, the )amb-blocks, balls and said device llb .being in the body, the balls being between the jamb-blocks and said device, and the jamb-blocks being between the balls and line-spacing wheel, the bearing surfaces of said device and the inner bearing-surfaces of the jamb-blocks sloping toward points on said axis that are remote from and on one side of the clutch, and said device being movable lengthwise of said axis and operative on the balls to roll them axially of the clutch.

14. In a typewriting machine, comprising a cylindrical platen and a line-spacing wheel separately movable on a common axis, a connecting clutch inclding a recessed body, jamb-blocks, balls, a central block on which the balls bear andthroughavhich said axis passes, a spring that acts lengthwise oi said axis, and a releasing device, the body being fast on the platen-shaft and surrounded byv the line-spacing Wheel, the jamb blocks, balls and said central block being in the body, the balls being between the .jambblocks and said central block, and the jambblocks being between the balls and linespacinggwheel, and said central block being normally pressed against the balls by the spring and being movable by the releasing device against the force of the spring to roll the balls axially of the clutch.

15'. In a typewriting machine, comprising a cylindrical platen and a line-spacing wheel separately movable on a common axis, a connecting clutch including a recessed body, jamb-blocks, balls, a central block on which the balls bear\and through which said axis passes, a spring that acts lengthwise of said axis, and a releasin device, the body being fast on the platen-s aft and surrounded by the line-spacing Wheel, the jamb-blocks, balls and said central block being in the body, the balls being between the jambblccks and said central block, and the, jambblocks being between the balls and linespacing wheel, the bearing surfaces of said central block and the inner bearing-surfaces of the jamb-blocks sloping toward points on said axis that are remote from and on one side of the clutch, and said central block being normally pressed against the balls by the spring and movable by the releasing device against the force of the spring to roll the balls axially vof the clutch.

1G. Inatypewriting machine,comprising acylindrical platen and a line-spacing wheel separately movable ona common axis, a Iconnecting clutch including balls, a block on which the balls bear and through which said axis passes, a spring that acts lengthwise of said axis, and a pushrod which projects from the platen shaft, the block being normally pressed against the balls by the spring and movable by the push-rod against the force of the spring to roll the balls axially of the clutch.

17. In a typewriting machine, comprising a cylindrical plat-en and a line-spacing wheel separately movable on a common axis, a connecting clutch including a recessed body fast on the platen-shaft, jambfblocks, balls, a central block on which the balls bear and through which said axis passes, a sp1-ing that acts lengthwise of said axis, andA a push rod projecting 'from the platen-shaft, the line-spacing wheel surrounding the bod and iitting loosely in a cylindrical case-a fixed to the platen, the jamb-blocks, balls and said central block being in the body, the balls being between the jamb-blocks and saiY central block, and ilie janib-blocks being' between the balls and line-spacing wheel, the bearing surfaces of said central block and inner bearingesurfaces of the jamb-blocks sloping toward points on said4 axis that are remote from and on one side of the clutch, and said central block being Y normally, pressed against the balls by the spring and being movable by the push rod against the force ofgthe spring to roll the balls axially of the clutch. '18. In a typewriting machine,- comprising a cylindrical platen anda line spacing wheel separately movable on a common axis, a connecting rotary clutch including a pair of rollers and a' device which extends between them and has opposite faces on which the rollers act when the platen and line spacing wheel are clutched together, and Which lits looselyin an opening in the platen shaft, Said device being movable in the directions in which the rollers travel as they roll upon it, and being flu-ther movable bodily toward either roller when that roller is loose.

19. in a typcwriting inachine, the Combination of a platen, a line spacing Wheel, and a connecting clutch, -said clutch comprising a pair of rollers and an intermediate loosely mounted self-adjusting double Wedge capable of movement both longitudinally and transversely of the platen.

Signed at Syracuse, in the county of Onondaga, and State of New York, this fifteenth clay of April, A. D. 1914..

ARTHUR J. BRIGGS.

Witnesses 1.

EARL S. BoYN'roN, WV. H. Ennmremi.

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