US1773933A - Typewriter - Google Patents

Description

Aug. 26, 1930; I J. H. BARR TYPEWRITER Filed June 29, 1926 3 Sheets-Sheet l a N fi wkw m INVENTOR I ([7701 Bea/"7.

ATTORNEY J. H. BARR TYPEWRITER Aug. 26, 1930.

Filed June 29 1926 3 Sheet-Sheet 2 INVENTOR (JkiLEBLZTI' i a My who u 3 3 f J. H. BARR 'TY'PEWRITER Aug. 2 1930.

Filed June 29', 1926 s Sheets-Sheet a Patented Aug. 26, 1930 UNITED STATES PATENT OFFICE JOHN H. BARB, OF ITHACL, NEW "YORK, ASSIGNOB '10 BABBPHOBSE CORPORATION, OI

- I'IHAOA, NEW YORK, A CORPORATION OF NEW YORK I TYPEWBITEB Application and June a, 1m. eel-m no. name.

This invention relates to typewriters and the like, and more articularly to the mechanism for. feeding t e paper therethrough 1n contactwith, the platen for .printing puros'e s.

Anobject of the invention is to generall improve and simplify the mechanism of suc devices for guiding the sheet or paper to be printed upon to and around the platen, and for holding it against the platen so as to be propelled with the platen in presenting the correct portions successively for printing purposes; which willgirovide a more dependable and positive fee ing action between the sheet or element to be printed upon and the platen; and with which the pressure between the feed'ingand guiding mechanism for the sheet or paperand the platen will be distributed so as to cause an even feedin of the paper throughout the length of the p aten.; further object is to provide improved and simple means for holding the paper. or sheet and conducting it through printing position, and which may be placed in either effective or ineffective position for holding the paper to the platen, in a simple and practical manner.

A further object of the invention is .to provide improved mechanism for guiding sheets or paper to and around the platen forprinting pur oses, which will hold the paperor sheets rmly and uniformly against the platen during feeding and printing operations, and which may be manipulated to release the pressure between the paper or sheets upon the platen in order to adjust the paper or sheets upon the platen.

A further object of the invention is to provide mechanism for accomplishing each and all of the above objects which will be capable of manufacture, to a maximum extent, from stamped sheet metal, and which will be exceptionally simple, durable, convenient, and relatively inexpensive.

Various other objects and advantages will be apparent from the following description of one embodiment of the invention, and the various novel features will be particularly referred to and pointed out in connection with the appended claims.

In the accompanyingdrawing: I

Fig. 1 is a side elevation of the paper feeding mechanism of a typewriter constructed in accordance with this invention Fig. 2 is an end elevation of the same;

Fig. 3 is a transverse, sectional elevation Fig. 7 is a plan of a portion of the mechanism of the same;

Fig. 8 is a sectional elevation of a portion of the paper feed shell, with the section appealring as along the lines 8-8 of Fig. 1; an

Fi 9 is an elevation partly in section of certain details.

Fig. 10 is a sectional elevation through one of the paper bail rollers; and

Fig. 11 is an endelevation of the same. I In'the illustrated embodiment of the invention, a, platen 10 of any suitable construction is rotatably mounted in plates 11 which project from a suitable carriage base 12 that is mounted for travel across the typewriting machine in any suitable or desired manner, as Well understood in the art. Such amounting of the carriage is illustrated in Fig. 2

tails have been omitted here, since they are not a part of the present invention.

The spindle may be confined in the bearings 17 of the slots 16 in any suitable manner, such as by latch levers 18 which are pivoted at 19 to the plates 11, and provided with hook portions which engage over the platen spindle and confine it within the bearlugs 17 of the slots 16. A spring 20 may be connected between each latch lever 18 and a suitable pin on the adjacent plate 11, so as to normally urge the latch lever in a direction to lock the platen spindle within the bearings 17 of the plates 11. The extreme end of each latch lever may be curved arcu ately, as at 21, so that when the platen spindle is forced into the slots 16, the latch levers will be automatically cammed aside to permit entrance of the platen spindle into the bearings 17 of the slots 16, whereupon the springs 20 willsnap the latch levers automatically into latching engagement with the platen' spindle.

A pair of lever arms 22 are pivotally mounted intermediate of their ends by pins 23 upon the plates 11, and corresponding ends of the levers 22 are connected by a rod 24 which forms, with the two levers, a paper holding bail which may be rocked in directions to carry this cross arm portion formed by the rod 24 to and from the platen 10. The rod 24 which forms the cross arm portion of the bail may have rotatably and slidably mounted thereon suitable rubber rollers 25, for holding against the platen the sections of sheets of paper which have been carried with the platen through printing position. The rod 24 may also have a flat surface portion 26 carrying suitable scale graduations. This flat portion may be formed by milling oil a face upon a cylindrical wire or rod.

Referring particularly to Figs. 1, 10 and 11, each roller 25 has a sleeve 25 of a size to fit the rod 24 and slide and rotate thereon. Upon one end of this sleeve arubber roller 25 is fitted and secured thereto such as by cement. The sleeve 25*, at one end, is provided with an internal annular groove or recess 25 which rotatably receives a slit bushing or friction element 25. This bushing or element 25 may be formed by providing a c linder with a single slit 25' (see Fig. 11) a ong its length, so as to be sprung open slightly when fitted upon the rod 24. The split bushing or friction element may be confined within the recess or groove 25 after insertion therein by spinning over and inwardly the adjacent free end of the sleeve 25 'so as to form an inwardly extending annular retaining flange 25. The split sleeve 25 frictionally grips the rod 24 at all times, and thus frictionally holds the composite roller 25 in all of its adjusted positions along the rod without limiting free rotation of the sleeve 25 and rubber roller 25 upon the rod.

A link 28 is pivotally connected by a pin 29 to each lever 22, and the free end of each link is provided with a slot 30 extending for a considerable distance from its free end. The slot 30 of each link slidingly straddles a pin 31 projecting from a face of the plate 11, the pin 31 preferably having an annular groove 32 (see Figs. 1 and 6) in which the link is slidingly and rockably disposed, and held against movement endwise of the pin on which it is mounted. A helical compression' spring 33 is provided upon each arm of the free end of each link 28 along the slot 30, and is compressed between the wall of the link at the inner end of the slot and a plate 34 which is provided with apertures through which the arms formed by the slot 30 slidingly extend. The plate 34 bears against the pin 31, so that the springs 33 will yieldingly urge each link 28 in a direction to withdraw it from the pin 31 upon which it is both slidably and rockably mounted.

When the cross rod 24 of the bail is somewhat spaced from the platen, such as in the position it would occupy when the bail is swung away from the platen, the pivot 23 of a lever 22, the pivot pin 29, and the pin 31 ateach end of the platen may be in dead center alignment with one another, and, therefore, the bail, upon being somewhat displaced in either direction, will be yieldingly urged in the corresponding direction, from that dead center position, in one of which directions it will be urged toward the platen so as to yieldingly press the rollers 25 against the platen. When the bail is swung away from the platen beyond the dead center position, it will then be yieldingly urged in a direction further from the laten.

'Each link 28 is provide with an ear 35 (see Fig. 6) for engagement bya tail portion 36 of the lever 22, to which it is connected, shortly after the bail is shifted in a direction away from the platen beyond the dead center position, so that the bail will yieldingly be held in a retracted position away from'the platen. i lVhen the bail is shifted towards the platen, it will, after passing the dead center position, be shifted yieldingly against the platen so as to confine against the latter any paper or sheet material which has been moved with the platen beyond printing osition. The rod 24 may be confined between t e levers 22 by screws 37 which pass through the levers 22 and are threaded into the ends of the rod 24. From this, it will be observed that the 11 in which it is rotatably mounted. The

plate 11 and provided with a shank 42 f reduced diameter which is rotatably received I within the recess 40of therod 38.

A plurality of arms 4am rotatably mounted upon the rod 38, part ofthe arms'extend: ing in one direction peripherally of the platenand the others extending peripherally in the other direction around the platen. The arms upon each side of the platen are grouped in pairs, and eachpai'r, supports a roller spindle rod 44 which extends between the arms of that pair. Upon each spindle rod 44 a pair of the usual paper feed rollers 45 are rotatablymounted and spaced apart by a suitable bushing 46.which is also rotatably mounted upon' the spindle rod 44. The arms 43 of each pair, together with the connecting spindle rod 44, constitute a bail which is oscillatable upon the rod' 38 so asto carry its feed rollers 45 into and out of contact with the platen surface. I

The extreme tip end of each spindle rod 44 is threaded fora short distance, as shown in Fig. 9, and the arms 43 are threaded somewhat loosely upo'usuch threaded ends so that the spindle rod'cannot become detached from its arms. In assembling, the arms 43 are screwed on the two ends of the rods 44, and are then lined up and slipped upon the rod 38, which restrainsarms 43 against becoming unscrewed. However, the spindle rod 44 can tilt-or move slightly within the arms 43 in an angular direction, so that the rollers 45 may engage uniformly with the platen surface along the entire length of the bail upon which they are supported. Any tendency of a spindle rod 44 to rotate and thus become detached or unthreaded from the arms 43 is prevented, either by engagement of the unthreaded ends of the rods with the arms 43, or as illustrated by providing shoulders upon the end portions Each of the spindle rods for engagement with the arms43. Thus, rotation of a spindle rod in either direction will be checked bv engage ment at the ends of the thread or a shoulder thereof with one of the arms 43, and. therefore, the spindle rods cannot rotate sufficiently, to become unthreaded from an arm 43. bail carrying the rollers is disposed opposite a similar bail carrying rollers 45, so that the rollersof these two bails contact with the platen surface at points spaced apart peripherally of the platen.

A yoke 47 is secured to the platen support 12 in any suitable manner, such as by screws 47 (Figs. 2, 3 and 5)'between each pair of arms 43 that extend along one particular side of the-platen and this rod 38 extends through the side arms of the yolres. A pressure arm 18 is provided with ang ularly extending and parallelears 49 which are pivotally mounted upon a pin 50 that extends between the arms of each yoke 47, the pin 50 being confined against endwise movement in the yoke by suitable locking pins 51- that extend transversely through the pin 50 and along the faces of the yoke. A somewhat similar pressure arm 52 is similarly pivoted upon the pin 50 between the ears 49. The two pressure arms 48 and 52 extend from the yoke on opposite sides of the rod 38, thenee along op osite sides of the platen, and bear upon the hushings .46 provided upon the bail spindle rods 44 between the feed rollers 45.

A bolt 53 extends through an aperture in one of the arms 48, with its head fitting and passes through a simiagainst that arm, 7

arm 52, the two preslar aperture in the other sure arms 48 and 52 having intermediate their ends for this purpose angularly offset approximately parallel portions. The free end of the bolt 53 carries anadjustable abutment member 54, such as a nut which is threaded thereon, and a compression spring 55 is confined between the arm 52 and the abutment member 54, so as to urge the pressure arms 48 and 52 yieldingly toward one another and toward'the platen, and press the rollers 45 yieldingly into contact with the platen. By adjusting the abutment members or nuts 54, the pressure of the rollers 45 upon the platen may be varied.

The ressure arms 48 and 52 are placed approximately midway of the lengthof each pair of bails with which they cooperate, and with the provision-for a limited tilting of the bail spindle rods 54, the pressure of the rollers 45 will be substantially uniform along the entire length of each bail and, therefore,

the feeding effect upon sheet material vdis posed between the rollers. and the platen will e uniform throughout the length of each bail. By adjustment of the nuts 54, the pressure may be made uniform throughout the entire length of the platen. I have found that four sets of bails on the rod 38 with the two sets of pressure arms 48 and 52 provide a very satisfactory feeding action when cooperating with the platen. lVith longer platens to enable the use of very wide paper, additional sets of rolls and pressure arms of the same construction can be provided.

A cam element 56 is secured, in any suitable manner, such as by a pin 57. to the rod 38 between each pair of pressurearms 48 and 52 for oscillation with the rod 38. Such a cam is shown separately in Fig. 4 and is provided with two angularly.spaced-cam noses 58 which are normally in the'positions shown in Fig. 3, so that when the rod 38 is rocked in one direction both noses of each cam will engage with the pressure arms 48 and 52 with which they cooperate and cam the arms apart, as shown in Fig. 5, against the action to one end portion of the rod 38, such as by a pin which passes transversely through a oss of the arm and the rod 38, so that whenever the arm 59 is rocked it will cause a rocking of the rod 38, and a separation or release of the pressure arms 48 and 52 through the action of the cams 56.

A spacing bushing 61 is provided upon the rod 38 between one plate 11 and one set of arms 43 which are nearest thereto, as shown in Fig. 1, and another spacer bushing 62 is disposed on the rod 38 between the arm 59 and the other pair of arms 43 which are nearest the other end of the rod 38. Still other spacer bushings 63 are disposed between the arms of the yokes 47 and the arms 43 of the bails with which the yokes cooperate,

and prevent lateral displacement of the arms 43. A spacer bushing 64 may also be provided upon the rod 38 between the abutting pairs of bail arms 43 so as to space each pair of bails from the other abutting pair. Thus, all of the arms 43 and the yokes will be properly spaced apart with respect to one another along the rod 38.

A concave paper deflector 65, representing a segment of a cylindrical shell, is vdisposed beneath the platen and is substantially coextensive in length therewith. The deflector at its ends is provided with downwardly extending flanges 66 which carry slots 67 extending inwardly from their free ends and straddling the spacer bushings 61 and 63, so

as to confine the deflector beneath the platen while permitting limited vertical movement thereof. A tongue 68 is struck downwardly from the deflector at a point intermediate of its ends, so as to depend between the arms 43 of abutting bails and hold the deflector a ainst movement endwise of the platen. Tie deflector is supported upon the corners of the arms 52 formed where the offset portions join the free end portions which bear against the spacer bushings 46 on the bail spindle rods 44, as shown in Figs. 3 and 5. The forward portion of the deflector is supported, or limited in its motion, by contact against the spacer bushings 46 upon the bail spindle rods 44.

The deflector 65 is provided with apertures 69 that are alignedwith the rollers 45 and through which the rollers 45 may project and contact with the surface of the platen. Thus when the rollers 45 are in contact with the platen, as shown in Fig. 3, for example, the deflector 65 will be supported upon the pressure arms 52 and upon the forward spacer bushings 46 which are engaged by the pressure arms 48. By making the slots 67 of sufli cient length, the deflector is capable of vertical movement in both directions upon the spacer bushings 61 and 62.

The tongue 68 which depends between the adjacent arms 43 of abutting bails extends first obliquely to the deflector, and then approximately normal to a plane tangent to the lower surface of the deflector, as shown in Fig. 8. When the deflector is in its upper position, which will'be the position shown in Fig. 3 and occupied when the rollers 45 are in contact with the platen, the oblique section'of the tongue 68 will be above the spacer bushing 64 and its free end section will extend along one side of that bushing 64. When the handle arm 59 is operated to rock the rod 38, the cams 56 will force the pressure arms 48 and 52 apart so as to release the pressure of the rollers 45 upon the platen.

Thereupon the rollers 45 will move away from the platen, and the deflector 65 will descend until the oblique section of the tongue 68 rests upon the spacer bushing 64 and checks the downward movement of the deflector with the arms 48 and 52. The deflector 65 may have an extension plate 70 extending rearwardly from and hinged to its rear edge, as shown in Figs. 2 and 5.

in order to lock the handle arm 59 in its angular position where it causes a release of the pressure of the rollers 45 upon the platen, a latch lever 71 may be provided. This lever is pivoted to the arm 59 at 72, and one end thereof is provided with a finger piece 73 which extends behind a similar linger piece upon the Iree end of the handle arm 59. The other end of the lever 71 extends angularly thereto and terminates in a hook 74 which is adapted to latch over a pin 75 provided upon one of the plates 11, and hold the handle arm 59 in its rearward position. The lever 71 may have ears 76 which embrace the handle arm 59 and limit the relative movement of the lever 71 upon the arm59, but permit sufiicient movement to allow operation ofthe lever into and out of latching engagement with the pin 75, when the handle arm 59 has been rocked rearwardly in order to cause a release of the pressure of the rollers 45 upon the platen.

The normal positions of the parts for feeding the paper through printing position are shown in Figs. 1, 2 and 3. In such positions, the rollers 45 will be pressed against the platen. The paper, with interleaved carbon sheets, if manifolding, is inserted into the throat of the machine between the rear of the platen and the paper table or deflector 65. Upon giving the platen a partial turn, the paper should, and normally does, pass into the control of the feed rolls around the deflector and under the bail, which latter should be in its forward or paper release position.

To adjust the paper to be typed after insertion, if it does not run squarely, or to adjust the paper for corrections, the operator first forces the handle arm 59 rearwardly and may pull the lever 71 towards the finger piece of the arm 59, so as to latch-the hook 74 of the lever 71 over the pin 75 and hold the arm 59 rotate the cams 56in forcethe pressure. arms 48, and seam-enemas ease the ressure u jonit e roller spindle ,-rods 44, w ereupon t e, rollers 45 will move away from the -p'laten so" as to-allow of the .struction. I As'the arms 48 and52'separate,thejdeflecand the rod 38is 'gagement with formed by easy adjustment of the :paper without obtor 65 "will descend until the tongue 68 rests upon the spacer bushing. 64 of the 'l'od 38, and

this additional clearance between the deflector and the platen also facilitates the ad'ust-. inent of the paper to be printed upon a ong the surface Of fthO platen; fWhen the paper has been adjusted to the desired-extent, the operator releases thelever ,71 from the'pin'75,

then roc'ked in'a reverse dithe cam noses; 158 out of en" rection to carry 7 v,

he arms 48 and: 52st The.

l springs 55 and bolts liirth'ereupon forcethe arms 48 and 52 toward one another,-yielgirtlg 9 ly force the "rollers 45 into contact wit platen, and elevate the paper deflector into normal position.

Before the upper edge of the papering bet'weenthe eflector andfpl ten has 'e n carried upwardlyA through pr nting position by rotationof t eplaten, thei-ho the arms andfcross bar 24' a should be pulled forwardly past dead center theupper ed e of the position in order to facilitate the insertion of v paper under the cross bar 24. The ail carrym the rollers 25 may then be moved towardzt e platenfso asito falling forward or. interfering tion of the type bars.

fyieldingly press the equal to-or 7 device, the rod 88 may be inse ed endwise through the hole in'the plate which normally receives the screw 4L1, and the screw 41 theninserted into that plate 11, with its shank 42 entering the recess 40 and rotatably support.- ingtherod'38,- T, t

It will be obviousjthatv'arious changes in the details,'which have been herein described and illustrated in order to-explain the nature of the invention, may be made by'those skilled inthe artzwithin the principle and scope of tllieinvention as expressed in the appended cmms'y. I v

I claim as my invention writers and the'jlike comprising the combination with a platen, of .a plurality of roller, elements extending in directions along the lengthof the platenand spaced apart in a direction peripherall of the platen, supporting-means for said 'elements permitting their movement toward and from the platen or independently of one another and also 'per:

mg bail .rec'tions peripherall'y'ofthe platen "from a f -1. Paper feeding mechmis-m for; 8 same mitting an individual limited longitudinal tilting of each'element, whereby each ele- "mentmay freely contact at points along its 7 entire "len 11 with said laten, arms supported in ependently of t e roller elements extending in opposite directions peripherally of the platen rockable independently of one another andhearing at their free ends upon said elements at points intermediate of their ends, and sprin means for yieldingly urging said, arms in irections to press the roller elements against the platen, andpermit tilting of the elements about the points of engiligement thereof with the arms, whereby 't e pressure of said roller elements on the platen will be uniform throughout their entire length. v

2, Paper feeding mechanism 'for writers and the like comprisin the comhiv nationwith a platen, of a plur ity ofroller 'ielements" extending. in directions along the len hot and spaced apart in a direction perip erally of the platen, a pair of separat'el' i'piv'oted, arms supporting each element, eac pair-of arms; permitting movement ofits ele-' ment towardand from the vplaten inde ndentlyof the other elementand a limite lonrately pivoted arms extendingin oppositedlproximately the same pivot, supported'lin ependentlyuof the roller element, and bearing at their free ends upon said elements at points] intermediate of1their'ends, spring me ans foryieldingly urging said arms 1n, (1 l; the roller elements againstpprmit independenttilting. a

; rection's to 'press the platen, and I fot the elements out the. points of engagf-fl 'mentt'ther'eof with the, arms, whereby t e pressure.

will be uniform throughout their entire length, and a; cam device for forcing the Q arms awayiiji'om the platen. in order to release the paper. for adjustment' upon the platen.', 3.- Paper feeding mechanism for typewriters and the like comprising a platen, a sup.-

port for the platen,a pivot'rod extending arallel'with th'e'platen 'andcarried by sai support, separate arms independently pivoton said rod and extending in opposite directions peripheral! of said platen, said f arms being arrange in pairs disposed upon side of the platen. an elongated roller element mounted in each air ofa i ms ina position arallel with the p aten and oscillatable wi tact with the platen, a pair of contact arms extending in opposite directions peripherally of the platen and bearing upon the roller elements at points approximately midway-of.

' the lengths of said e emen'ts, means for yield- 'gitudin'al 1 tilting of .that element, f'whe'reby {each element may freely contact; atpoints Q alongits entire length vwith saidplamm Pl" of said roller elements on the platen the arms into and out of conplaten in order to yieldingly press the roller elements into contact with the platen, and a cam device interposed between the contact arms for forcing them apart in order to re, lease the pressure of said roller elements against the laten.

4. Paper ceding mechanism for typewriters and the like comprising a platen, a support on which the platen is rotatably mounted, feed roller elements disposed along the platen, positioned at spaced peripheral points thereof, arms carried by sa d support and mounting said elements for movement toward and from the platen, means for yieldingly pressing said elements against the platen, including a pair of arms connected to said support and pressing one upon each of said elements, and acam device interposed between said pair of arms for forcing them apart in order to release the pressure of the elements upon the platen.

5. Paper feeding mechanism for typewriters and the like comprising the combination with a platen and its support, of a rod car-.

ried by said support, extending in a direction parallel to the platen, and spaced somewhat therefrom, feed roller elements hinged to said rod for oscillation thereon into and out of contact "with the platen, a pair of independently pivoted arms freely swingable toward and from the platen from opposite sides thereof and bearing upon said feed roller elements so as to force the latter against the platen, and a s ring device connected between the arms or urging them toward one another and yieldingly forcing the feed roller elements into contact with the platen.

6. Paper feeding mechanism for t ewriters and the like comprising the com 1- nation with a platen and its support, of a rod carried by said support, extending in a direction parallel to the platen. and spaced somewhat therefrom, feed roller elements hinged to said rod for oscillation thereon into and out of contact with the platen, a pair of arms freely swingable toward and from the platen from opposite sides thereof, and bearmg upon said feed roller elements so as to force the latter against the platen, a spring device connected between the arms for urging them toward one another and yieldingly forcing the feed roller elements into contact with the platen, and means for separating said arms to release the pressure on said elements. Y

7. Paper feeding mechanism for typewriters and the like comprising the combination with a platen and its support, of a rod carried by said support, extending in a direction parallel to the platen, and spaced somewhat therefrom, feed roller elements hinged to said rod for oscillation thereon into and out of contactwith the platen, a pair of arms freely swingable toward and from the platen from opposite sides thereof, and bearing upon said feed roller elements so as to force the latter against the platen, a spring device connected between the arms for urging them toward one another and yieldingly forcing the feed roller elements into contact with the platen, and a cam disposed on said rod between said arms and operable to force them apart in order to release the pressure on said elements.

8. Paper feeding mechanism for typewriters and the like comprising the combination with a platen and its support, of a rod carried by said support, extending in a direction parallel to the platen, and spaced somewhat therefrom, feed roller elements hinged to said rod for oscillation thereon into and out of contact with the platen, a pair of arms freely swingable toward and from the opposite sides thereof and bearing upon said feed roller elements so as to force the latter against the platen, a spring device connected between the arms for urging them toward. one another and yieldingly forcing the feed roller elements into contact with the platen, a cam disposed on said rod between said arms and operable to force them apart in order to release the pressure on said elements, said cam being fixed to said shaft, and said shaft being rotatably mounted in said support, and means for rocking said shaft to cam said arms apart.

9. Paper feeding mechanism for typewriters and the like comprising the combination with a platen and its support, of a rod carried by said support and extending parallel to the platen, bails hinged on said 'rod and extending in opposite directions peripherally of the platen so as to be movable into contact with the platen at spaced peripheral points thereof, rollers carried by'said bails for contact with said platen and spaced apart at approximately the center of the length of the bail, a pair of arms supported for movement toward the platen and bearing upon said bails at such center points between the rollers, so as to press the rollers against the platen and permit longitudinal tilting of the bails. and spring means for yieldingly urging the arms toward one another so as to yieldingly press the rollers against the platen.

10. Paper feeding mechanism for typewriters and the like, comprising the combination with a platen and its support, of a rod carried by said support and extending parallel to the platen, bails hinged on said rod and extending in opposite directions peripherally of the platen so as to be movable into contact with the platen at spaced pe-. ripheral points thereof, rollers carried by said bail for contact with said platen and spaced apart at approximately the center of the length of the bail, a pair of arms supported for movement toward the platen and bearing upon said bails at such center points ace lilo

between the, rollers, so as to press the rollers againsttheplaten and permit longitudinal:

tilting of. the bails,la pin passing between the arms and permitting their relative movementtoward and-from one another, and a spring carried by said pin and forcin said arms towards one another, so as to ylel ingly press the 'rollers'intocontact with the platen.

11. Paper feeding mechanism for typev writers and the like, comprising the combination with a platen,.of a pair of paper feed elements mounted for movement into and out of contact with the platen, a pair of pivoted arms bearing'upon said elements extending bearing upon said elements and shiftable toward and from the platen so as to-press the feed elements into contact with theplaten, a

spring device connected bet-ween the arms for yieldingly urging them toward'one another, so as to press the feed elements yieldingly against the platen, a pin extending between the arms and'permitting their relative movement toward and 'from one another, and a spring mounted upon said pin and yieldingly platen.

pressing said arms toward one another so as to press the elements into contact with the 13. Paper writers and the like comprising the combination with a platen and its support, of a rod carried by said support, paper feed elements shiftable toward and from the platen at peripherally spaced points thereof. a yoke, a

palr of arms pivoted in said yoke and extending in oppositedirections peripherally of'the platen and bearing uponsaid paper feed elements'for forcing them toward the platen and spring means connecting said arms or yieldingly urgin themztoward one I another,-so as to press t epaper feed-elements yieldin'gly into contact ..with: the platen..'- 1 a 14. Paper feeding mechanism for typewriters and the like, comprising the combination with a platen and its support, of a rod carried by said support, ments, shiftable toward and om the platen at peripherally-spaced points thereof, a yoke,

a pair of arms pivoted in said yoke and'ex-v tending in opposite directions peripherall 05 b the platen and bearing upon said paper ee elements for forcing them toward'the platen,

feeding mechanism 'for type the platen.

fpaper feed. elespring means connecting said arms for yieldingly urging them toward one another, so 'as'to press the paper feed elements yieldingly into contact with the platen, and a cam device'mounted on said rod and operable, upon movement in one direction, to force said arms apart and release the pressureon said elements.

15. Paper feeding mechanism for ty writers and thelike, comprising the com ination with a platen, of a pair of paper'feed elements mounted for movement into and out of contact with the platen, a pair of arms bearing upon said elements and shiftable toward and from the platen so as to press the feed elements into contact with the platen, a pin extending between the arms and permitting their relative movement toward and from one another, a spring mounted upon said pin and yieldingly pressing said arms toward one another so as to press the elements into contact with'the platen, and means accessible from an end of the platen for forcing said arms apart to release the pressure of said elements upon said platen.

'16. Paper feeding mechanism .for typewriters and the like, com rising the combination with a platen an its support, of a rod carried by said support in spaced parallel relation to the platen, pressure feed "elements hinged upon said rod, and extending in opposite directions peripherallyalong the platen from the rod, a U-shaped yoke, a pair of pressure arms hinged to said yoke and extending in opposite directions peripherally of the platen and bearing upon said elements so as to forcethe latter toward the platen and a spring device connected between the them yieldingly.

pressure arms for urgin in directions to force said elements against 17. Paperfeeding mechanism for ewritersand the like, comprising the com ination with a laten and its support, of a rod carried by said support and spaced in parallel relation .to. the platen,' pressure feed elements hinged upon said rod, andextending in opposite" directions peripherally along the'platen from said rod, a U-shaped yoke, a pair of pressure arms hinged to said yoke and extending in opposite directions peripherallyof the platen and bearing upon said elements so as to force the latter towardthc platen, and a spring device connected between the pressure arms for urging them yieldingly in directions to force said elements againstsaid platen, said ressure arms bearing upon said paper feed e ements at fpoints approximately 18. Paper feeding mechanism for typewriters and the like comprising the combination with a platen, of a pair of paper feed elements shiftable into and out of contact with spaced peripheral ortions of the platen, a pair of arms exten ing in opposite directions peripherally of said laten and bearing upon said elements for shifting the latter toward the platen, a pin e'xtending from one arm slidingly through the other and carrying an ad- 'ustable abutment, and a spring interposed tween said abutment and the arm throu h which the pin slidingly passes for urging said arms toward one another, whereby said ele- I ments will be yieldingly held in contact with said platen.

19. Pa er feeding mechanism for typewriters and t e like, comprising the combination with a laten, of a pair of paper feed elements, s iftable into and out of contact with spaced peripheral portions of the dplatema pair of arms extendin in opposite irections peripherally ofsaid p aten and bearing'upon said elements for shiftin the latter toward the platen, a pin exten ing from one arm slidingl through the other and carryin an adjusta le abutment, a spring interpose be tween said abutment and the arm throu h which the pin slidingly passes for urging s'ald arms toward one another, whereby said elements will be yieldingly held in contact with vsaid platen, and means including a cam element interposed between the arms for separating them in order to release the pressure of said elements upon the platen. I

20. Pa er feeding mechanism fort ewriters and t e like, comprising the com mation with a platen and a support in which the platen is rotatably mounted adjacent its end,

of a cam element extending parallel to and spaced from the platen, and rotatably mounted in said support, paper feed elements mounted for movement into and out of contact with peri herally spaced points of the platen, means or yieldin ly urging said elements into contact with t e platen, said cam element being eflective upon said yieldin means for rendering it ine ective when osci lated in one direction, and an operating handle connected to said cam element.

21. Pa er feeding mechanism for typewriters and the like, comprising the combination with a platen, and a support for rotatably mounting said platen, of a bail element 4 hinged by its arms to said sup ort for movement into and out of contact with said platen, rollers adjustablealong the cross arm of said bail for engagement with the platen, and a toggle link and spring element ivotall connected to' an arm of the bail or yiel ingly urging it in either direction from a dead center position in which it is out of contact with the laten, whereby said bail will be held yield ingly either in contact with the platen or urge in a direction away from the platen, and means for limiting the movement of the bail away from the platen.

22. Paper feeding mechanism for typewriters andthe like comprising the combination with a platen, and a support'in which the platen is rotatabl mounted adjacent its ends, of a bail hinged hy its arms to saidsupport, with the cross arm portion extending parallel with the platen and movable toward and from the platen upon oscillation of the bail, one of the arms of the bail extending beyond its pivot, a link pivoted to said extension of one of the arms of the bail and slidingly and rockably mounted at its other end upon said support, and a spring interposed between said support and said link for urging said link in the direction permitted by its sliding movement so as to urge said bail in either direction iroma dead center position in which the sliding support, the pivotal connection between the link and the bail arm to which it is connected, and the pivotal su port of said bail arm will be in a straight ine, said bail when in dead center position being out of contact with the platen, whereby it will be urged yieldingly in either direction when displaced from said dead center osition so as to be urged yieldingly towar or away from the platen. I

23. Paper feeding mechanism for ty ewriters and the like comprising the com ination with a platen, and a support in which the platen is rotatabl mounted adjacent its ends, of a bail hinged by its arms to said support, with the cross arm portion extendin parallel with the platen and movable towar and from the platen upon oscillation of the bail, a link pivoted to one of the arms of the bail and slidingly and rockably mounted at its other end upon said support, and a spring interposed between said support and said link or urging said link in the direction permitted b its sliding movement, so as to urge sai bail in either direction from a dead center position in which the sliding support, the pivotal connection between the link and the bail arm to which it is connected and the pivotal support of said bail arm will be in a strai ht line, said bail when in dead center positlon bein out of contact with the platen, where y it will be urged yieldingly in either direction when displaced from said dead center position toward or away from the platen, said bail and link having cooperating portions for limitingthe movement of the bail in a direction away from the platen past dead center position.

24. Paper feeding mechanism for typewriters and the like-comprising the combination with a platen, and a support in which the platen is rotatably mounted adjacent its ends, of a bail hinged by its arms to said support, with the cross arm portion extending parallel with the platen and movable towardand from the platen upon oscillation of the bail, a link pivotedto one of the arms of the bail and slidingly androckably mounted at its other end upon said support, a spring interposed between said support and said link for urging saidlink in the direction permitted by its sliding movement, sons to urge said bail in either direction from a dead center position in which the sliding support, the pivotal connection between -the link and the bail arm to which it is connected and the pivotal support of said bail arm will be in a straight line, said bail when in dead center position being out of contact with the platen, whereby it will be urged yieldingly in either direction when displaced from said dead center position so as to be urged yieldingly toward or away from the platen, said limiting means-including cooperating abutments on the link and the tail of the bail.

25. Paper feeding mechanism for typewriters and the like comprising the combination' with a platen and a support for the platen, of a bail pivoted by its arms to the support for oscillation of its cross arm portion toward and from the platen, the pivotal 4 saidv one arm, and the rocking points of connection between the support and one bail arm being at points intermediate the ends of said one arm, a link ivotally connected to'the projecting end 0 said one arm and slidably androckably mounted on said support, a. spring device interposedbetween said link and said support for ieldingly urgin sliding movement of said ink, the pivot 0 said one arm of the bail,

the pivotal connection between the link and axis of the link upon the support being 1n a straight line when the cross arm portion of the bail is spaced from the platen, whereby said bail will be yieldingly urged in either direction,

nation with a platen and a support for the p one arm,

upon the support'being in a straight hne when. the cross-portion of the bail is spaced toward or from thelplaten from the dead center position where the bail is out of contact with the platen;

26. Paper feeding mechanism, for ty ewriters and the like, comprising the com iivoted by its arms to the support for osci ation of its cross portion toward and from the platen, the pivotal points of connection between. the support and one bail arm being at points intermeplaten, of a bail diate the ends'of said one arm, a link ivot-v ally connected to the projecting end 0 said one arm and slidably and rockably mounted on said support, a. spring device mterposed between said link and said support foryieldingly urgin v the pivot o said one arm of the hail, the pivotal connection between the link said and the rocking. axis of the link from the platen, whereby said bail will be sliding movement of said link,

27. Paper feeding mechanism for 'typewriters and the like, comprising the combination with a support, and a platen rotatably mounted in said support, of a paper holding bail having its arms hinged upon said support, one of said arms extending beyond its hinge, a link pivotally connected to the extension of said one of said arms to form an articulated continuation of said extension, a

pin having sliding engagement with said link, and a spring acting between said pin and link, for resiliently urging said arm in either direction away from a dead center position of said device and arm, one of said di rections being toward the platen, whereby said element will be yieldingly against the platen when urged in sai one of the directions and may be moved therefrom past dead center position.

28. Paper feeding mechanism for type.- writers and the like, comprising the combination with a platen and a support therefor, of a bail pivoted by its arms to said support for oscillation to carry its cross portion toward and from the platen, a link pivoted to one of the arms of said bail and having a slot at its other end, a pin on said support receiving said slot, so as to slidingly and rockably mount said link, a plate bearing against said ressed I pin and having apertures through which the arms of the slotted end slidingly pro ect springs provided upon the arms of sai slotted end and compressed between the plate and the unslotted end of the link, so as to urge the link endwise in a direction tending to remove it from the pin, and rock said bail in either direction from. a dead center position in.which the cross portion is out of contact with the platen, whereby the cross ortion of the bail will be urged either into e springs are 29. Pa ewriters'and; -t alike, comprising the com mation with spam and a support therefor, of a bail pivoted'by its arms to said support for oscillation to carry its cross -portion toward and from the platen, a link pivoted to one of arms of the slotted end slidingly project,

springs provided upon the arms of said slotcontact with the platen or in a direction away from the platen, depending upon which side of the dead center position t effective upon the bail.

er feeding mechanism for t ted end and compressed between the plate in either direction from a dead center posi-- tion in which the cross portion is out of contact with the platen, whereby the cross portion of the bail will be urged either into contact with the platen or in a direction away from the platen, depending upon which side of the dead center position the sprin s are effective upon the bail, said link and bal having interengaging abutment portions limiting movement of the bail in a direction to carry thecross portion away from the platen.

30. Paper feeding mechanism for typewriters and the like comprising a (platen, a support for the platen, a pivot ro extending parallel with the platen and carried by said support, arms pivoted on said rod and extending in opposite directions peripherally of said platen, said arms being arranged in pairs, and the arms of each pair being disposed upon the same side of the platen, means connectin the arms of each pair and including space roller elements oscillat-able with the arms into and out of contact with the platen, and a pressure arm bearing on each of said connectin means at points intermediate of the ends 0 said means, and between the roller elements thereon, said arms bein biased in a direction topress the roller elements yieldingly against the platen.

31. Paper feeding mechanism for typewriters and the like comprising a platen, a support for the platen, a pivot rod extending parallel with the platen and carried by sai sup ort, arms pivoted on. said rod and exten in in opposite directions peripherally of sai posed upon the same side of the platen, means connectm the arms of each pair and including spaced roller elements oscillatable with the arms into and out of contact with the platen, a pressure arm bearing on each of said connecting means at points intermed ate of the ends of said means, and between the roller elements thereon, said arms being bi ased in a direction to press the roller elements yie'ldingly against the laten, and cam means effective on said arms or forcing them in directions to release the pressure of the roller elements upon the platen.

32. Paper feeding mechanism for type writers and the like comprising the combina tion with a platen, of a pair of paper feed elements mountedrfor movement into and out of contact with the platen from opposite sides thereof, a pair of separate pivoted arms hearing one upon each of said elements and biased ,in a direction to press the feed elements into contact with the platen, and cam means effective upon said arms for releasing the pressure upon said elements.

platen, said arms being arranged 1n pairs and the arms of each pair being d1s-.

mounted for movement into and out of con- I tact with the platen and capable of a limited longitudinal, tilting in order to contact uniformly for its entire length with the platen, and means bearing upon said element at approximately its central point and biased in a direction to press said element against the platen.

34. Paper feeding mechanism for typewriters and the like comprising the combination with a platen, of a paper feed element mounted for movement into and out of contact with the platen and. capable of a limited longitudinal tilting in order to contact uniformly for its entire length with the platen, means bearing upon said element at approximately its central point and biased in a direction to press said element against the platen,

and cam means effective upon the last named g ed on said link and acting onit for urging it yieldingly in either direction from a dead center position-in which said bail element is out of contact with the platen, whereby the bail. will be held yieldingly either in-contact with the platen or biased in a direction away from the which it .18 connected constituting toggle parts, one of said parts having a lug in the path of the other part for limiting movement of the bail in a direction away from the platen.

36. In rod, a roller rotatably and slidably mounted on said rod and having an internal annular channel, and a split sleeve confined within said channel and frictionally gripping said rod and freely rotatable relatively to said u o roller, whereby its frictional engagement.

with the rod will frictionally'resist movement of the roller along the rod without restricting its rotation. I

37. In a typewriting machine, a bearing rod, a roller rotatably and slidablymounted onsaid rod and having an internal annular stricting its rotation, and a sleeve of friction Cal laten, said link and the arm to i a typewriting machine, a bearing material secured to the exterior of said reduced ortion and rotatable therewith.

I rollerwillbe freely rotatable on the shaft and frictionally held in various positions into which it may be adjusted by movement along the rod. a

39. In a typewritin'g'machine or the like,

a bearing rod, a roller slidable and rotatable on said rod and having an internal cavity, a

vfriction device loosely confined in said cavit and frictionally enga' ing with sa1d ro whereby said roller wi 1 be freely rotatable on the shaft and frictionally held in various positions into which it may be adjusted by movement along the rod,

40. In a 'typewriting machine or the like, a bearing rod, a sleeve rotatable'and slidable on said rod and havin opening into the bore, a riction device in said cavity having frictional engagement with said rod and loosely engaging said sleeve, whereby the frictional device will by friction resist adjustment of the sleeve along the rod 1 without offering material resistance to the rotation of said sleeve, and a sleeve of friction material fitted upon and rotating with said first mentioned'sleeve. f

41. In a typewriting machine, a platen, a supportfor the platen, a pair of arms hinged on said support and extending into proximity to said-platen, a rod loosely threaded atits endsinto the free ends of said arms, rollers carried by said rod and engaging with the platen when swung there'against, and means for pressing said rod toward the laten,

whereby said rod and rollers may t' t to a limited extent toward and from the platen in order to adjust the rollers into complete contact with the platen alongtheir entire length, the threaded ends of said rod being formed to limit the extent to which the arms may be threadedthereon, whereby material rotation of the rod in either direction such as will tend to'unscrew it from the arms will be resisted.

42. Paper feeding mechanism for typewriters and the like comprising a'platen, a support for the platen, paperfeed elements arranged in pairs along the platen, the elements of each pairbeing'movable toward one another into contact with peripheral spaced points of the platen, means for yi'eldingly urging the elements of each pair toward one another and into contact with the platen including arms bearing upon said elements, a rod extending lengthwise of the platen and having cam portions interposed between said members for forcing them apart upon rotation of the rod in order to lessen the pressure of said elements upon the platen.

an internal cavity.

. 43. In a typewriter, a platen, a rod extending beneath the platen, bails hinged on said rod at points along the same, rollers car-- and also having a tongue extending between adjacent arms of said bails so as to beheld thereby against, movement endwise of the platen. I i

44. In a typewriter, a

platen, a rod extending beneath the platen,

ails hinged on said rod at (points alon the same, rollers carried by sai bails an movable therewith into and out of contact with the platen, and a concave paper deflector disposed beneath the platen and between the platen and said rod, said deflector having tongues depending therefrom and having sliding engagement with said rod, whereby said rod will guide said'deflector toward and from the platen, and also having a tongue extending between adjacent arms of said bails, so as to be held thereby a ainst movement endwise of the platen, said bail arms having an offset portion engageable with said rod-tolimit the movement of the deflector in a direction away from the platen.

45. In a'typewriter, a platen, a rodextening beneat the platen, bails hinged on said rodvat oints alon the same, rollers carried by sald bails an movable therewith into and out of contact with the platen, aconcavepape'r deflector disposed beneath the platen and between the platen and said rod, said deflector having tongues depending therefrom and having sliding engagement with said rod, whereby said rod will guide said deflector toward and from the piateii, and also having a tongue extending between adjacent arms of said bails so as to be held tongue which extends between the thereby against movement endwise of the platen, means for biasing said bails toward the platen, said deflector being operable by.

said means and bails toward the platento confine the aper deflector closely thereto when the bai s are swung toward the platenv means, whereby t e deflector will be guided toward and from the platen, paper feeding means associated with said platen and movable between eflective'and ineffective positions with respect thereto, and operable on said deflector to move it toward said -platen" (paper feeding means is made efwhen the fective an to release it for movement away from the platen when the means is made ineffective.

47. In a typewriter, a platen, means extending parallel to and beneath said platen, a concave paper deflector disposed beneath said platen with its concave face toward? the platen, said deflector being formed'of sheet metal and having tongues extendingtherefrom and slidinglly engageable with said means, whereby t e deflector willbe uided toward and from the platen, paper feeding means associated with said platen and mov' able between effective and'inefl'ective posi-.

tions with respect thereto, and operable on said deflector to move it toward said platen when the paper feeding means is made efiective and to release it for movement away from the platen when the aper feeding means is made inefiective, sai deflector also having a tongue engageable with said paper" feeding means for preventing endwise movement of the deflector.

JOHN H. BARR.

paper feeding

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