USRE13935E - By corona typewrites - Google Patents

Description

F. s. Rosi. becn. CDROM TVPEWIITEI! COMPANY, INC.. ASSIGNEE. ESCAPEMENT MECHANISM FDR TYPE WRITER` PPLICT FILED AY 22| |915. Reissued June 22, 1915. `1 3,935.

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F. S. ROSE, DECD. commu Tvnwmen conny'. wc.. Asslcuis; ESCAPEMENT IAECHMHSM FOR TYPE WRITERS. AAwuclnlcm mtu un 22. |915.

Reissued June 22,1915. 13,935

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APPLICATION FILED HAY 22 l9l5.

i n 3 SHEETS-SMEET 3.

origini if. 940,553, ma rebnmy s, 1910,

f an escai UNITED 1STATES PATENT OFFICE.

FRANK S. DOSE, DECEASED, LATE OF'NEWA'RK, NEW JERSEY, BY COLONA TYPEWRITEB.

COMPANY, INC., 0F GRGTON, NEW YORK, ASSIGNEE.'

To all whom 'it may concern:

Be it known that the CORONA TYPEWRITER COMPANY, INC., a corporation organized and existin under the laws of the State of New York, Tnited States ofA America, assignee by assignment of FRANK S. Ross, deceased, late a citizen of the United States and a resident .of Newark, in the county of vEssex and State of New Jersey, makes application for certain new and useful Improvements in Escapement: Mechanism for Typ-Writers, invented by the said FRANK S. es, of which the following is a s eciication.

The invention re ates to an escapement mechanism for typewriters.

' In the present invention the object is to provide a mechanism for controlling Athe step-.by-step feed of a platen-carriage which is adapted to befolded' relatively to the keys, o" av keyboard, or the type-bars ofa front strike typewriter..

One example of a typewriter with a foldable platen-carriage is disclosed by United States Letters Patent No. 754,242, granted to the said Frank S. Roseon March 8, 1904.

Broadly speaking, the invention consists or adjusts le platen-carriage wherein certain tparts'ofv said mechanism remain in po- 'sitionfor actionat all 'times by the keys of the typewriter, and other parts of said lmechanism are shiftable or movable with the platen carriage when the latter is folded rela-tively to the keys or the type-bars. Said parts of the escapement mechanism which are shiftable with the foldable carriage act in comunction with the spacing .rack to hold ythe carriage in .place against the pull of the tension spring, and, further-` lmore, these parte are so combined with the non-ad1ustablekey-actuated parts as to be brought into coperative relation thereto on the return of' the :platen carriage to its normal working position.

invention further` consists in ,the 'novelgconstruotin and combinationof parts .willi-be bomma.. fter fully described and c aime Reference is to behad to the accompany nig dra'wmg's, forming a part -of this speci? ent mechanism for a foldable the dotted line 4 4 of Fig,r 3

- ward. Fig. 6 is a sectional sie' :ation taken Specieation ot Reissued Letters Patenti. Reissvued une 22, 1915.

Serial No. 256,244. Application for reissue led AIay- 22, 1915. serial No. 29,762. A

lisation wherein like characters of reference riage with its supporting mea-ns in their normal working positions.l Fig. 2 1s a sectional elevation similar to Fig. 1, With the platen carriage raised to the limit of its extreme upper adjustment for the purpose of writing with the numerals and untuation characters, the dotted lines s owing v.

the folded position of the platen carriage Awith respect to the keyboard. Fig. Bis a rear elevation of. the typewriter, arts being broken away and in section. y ig. 4 is a horizontal sectional view taken in the 'plane ofthe dotted line 4 4 of Fig. 3, lookin upward in the direction'ofthe arrow an showing the bed of the platen carriage together with the dog carrier of the escapement mechanism and the tension device or giving the traveling movement to the platen carriage. Fig. 5 is a sectional plan view, the plane of the section beingr indicated by loc-kingdownin the plane of the dotted line 'Li-6 of Fig.

5,1ook1ng in the direction of the arrow, and' .showing the platen carriage adjusted to an intermediate position between the two positions indicated by Figs. 1 and 2, respec. tively.v Fig. 7 is a ldetail perspective view of the dog carrier with the escapement dogs thereon.

The frame A maybe of any suitable or preferred construction.. The back part of vthe frame is provided with a sector consist-- ing of the individual members B, in which are hung the type-bars C, by ymeans of the pins c, said type-bars being arranged to fold 'to the substantially horizontal positions indicated by Fig. I, somewhat similar to the well' known style of front-strike machines.

In machines of this class-it. is customary to 1 mount the typelbars for movement on horizontal axes, 'and to allow them to fold down- I wardly into horizontal positions below and plication one t ofr escapement mechanism 1s,shown whic fulfils these conditions, and the same will now be described in detail.

Y An element of this escapement mechanism is a horizontal bar L ranging lengthwise of the carriage and attached thereto, partaking of the endwise movement thereof, said bar being provided with a series of teeth forming a rack. Another element of said escapement mechanism is a dog carrier represented rnore clearly by j Figs. 4 and 7.

y Said carrier is shown as a dat plate' or arm M, arranged preferably on Ithe under side of the carriage bed H, to which it is connected pivotally in a suitable way, as forexample, by the'vertical pin or screw m. The dog carrier is prevented from folding or dropping out of place by a= keeper m fixed to the carriage bed H, and the free -end of said dog carrier is arranged to eX- tend across the slot h in the carriage bed.

This d og carrier 1s provided with two dogs O O", the dog (l being fixed to or integral with the Iotherwise free end of the carrier M,

,and extending upwardly therefrom, through the slot so aslto have engagement normally with the 'tooth of the rack bar L. The ldog constitutes what may be termed the fixed dog ,although it is capable 'of move-A ment with the dog carrier. The other dog -O is disposed alongside of the fixedhdog O,

to which it is connected pivotally as at o, and against the toe of this pivoted dog O actsv as aspring o 'the latter being attached tothe do ycarrier M, and operating to hold normally out of re 'stration or alinement with thel fixed dog The two dogs are mounted on the carrier M, so as to have \movement therewith, although the pivoted dog 0 has movement on itsaxis o independently of itsmovement with the car- `rief: h yThe carrier M is held in a normal v,position by a spring n mounted on the carriaebed and acting to hold the carriage an the dog O in position for the latter to engage Awith a tooth o f the rack, but in the action of the machine the carrierl is operl ated againstthe tension olf'V itss ring n', so as to withdraw the dog 0 from place the, pivoted dog e rack and O in position for engagement with ,the next tooth of the rack-| therebyl checking the movement of the platen carriage under the action of the tension device and operating to regulate the move- 'j ment of said platen carriage with the required step-by-step feed forthe purpose of spacing the impressions of the letters or printing characters in the manner well understood by those skilled in the art.v

Another member of the escapement mechanism is a tappet P, which coperates with 'the dog carrier M and is associated with means whereby it may be operated by any one of the type-bar keys or the spacin key,

said tappetvbeing also associated wit the 4cranks means for shifting the platen carriage in order that it may remain in coperative relation to said dog carrier.

The tappet P is represented in the form of a short arm arranged below the carriage bed and normally in coperative relation to a toe piece M of thevdog carrier. This tappet. is carried by a rocking and shifting y frame which is herein shown as consisting of l.

the upri ht members Q and a cross member 7|5` or rod seeFigs. 3 and 5. The upright members or parts Q of this yframe are disposed alongside of the guides F, and they are connected loosely at their lower ends to the cross bar or rod Gr'-, which connects with i the vertical slidable stems G, the latter carrying the carriage bed H as heretofore described, whereby the. frame is adapted to be adjusted vertically with the stems G and the carria e bed. Instead of connecting the members of the rocking frame loosely to the cross bar or rod G', said members may- 'be fastened rlgidly to .said rod and the rod mounted loosely in thestems G, so as to rock or turn therein with said frame. The members Q of said frame are connected by the cross member Q', and on the middle part of this cross member is secured the tappet P, the latter being adapted to rock with the frame on the center afforded by the rod G',

in order to actuate the dog carrier when the frame is rocked. A

The means for rocking the frame consists of a universal bar R adapted for actuation by either of the key-levers or the spacingA key, and suitablebell cranks S. The bell cranks are disposed at the sides of the machine between the guides Fand the upright members Q of the rocking frame, each bell crank being fulcrumed at its knee by a pin s,

lor its equivalent, attached to one of .the 'guides The horizontalarms'of the bell cranks 'are connected by links S withj the end portions of the universal bar R, but.

the vertical arms of said bell cranks have slidable connection with the u right meinbcrs Q of the rocking frame. his slidable connection betweensaid rocking frame and the bell cranks is secured by providing -pins or screws tv on the'vertical arms of the bell t in the upper ends of the upright mem-v bers Q of the rocking frame. The pins or screws t connect the bell cranks with the rocking frame, so as to actuate the latter when the luniversal bar R is operated by any one of thekeys, while the slotslt i permit the rocking frame-to be raised vor lowered 'with the platen. carriage Without disenga n .the operative connection between t e ell cranks and said frame thus insuring the operation ofthe dog by the tappet` at any point. in the elevation .of the platen carriage.,k f f The spacing key consists ofthe arms u and by `making longitudinal slots and the lpressure piece U, the latter being arranged at the front Vof the keyboard, and the arms u extending rearwardly to the uni.- versal bar. These arms are provided with notches u', forming yokes in which the universal bar is snugly seated, and this bar is adapted to be moved bodily in a vertical plane by the arms` of the spacing key, although said universal bar is capable of a limited movement in said yokes of the arms tt, without, however, disengaging said universal bar from the yokes of the spacing key arms. The arms ef the spacing keyfare hung loosely from onty of the rods E, and this spacing key is practically a leve-r, upon the depression of which the universal bar R is operated to actuate the tappet l) through the bell cranks S, the rod Q and the rocking frameA The universal bar R extends across and lies close to the reark ends ofthe key-levers D, and this bar is adapted to be actuated by any one of the key-levers in the operation of the machine.

Different key-levers for shifting the laten carriage vertically and to dilferent points are employed as shown by Figs. 2 and 6 for permitting the upper case characters and punctuation marks and numerals to be printed on the platen. One of said shifting levers is indicated at V, arranged at one side of the frame and provided with a linger piece e. This lever is fulcrumed at a point intermediate cf its length on a. rod V', see F ig. 6, and the rear end of the lever is connected with the rod G', the latter uniting the sliding stems (il on the platen car riage. The other shifting lever VVbperates to lift the platen carriage to its highest position, said lever being located on t-he other side of the frame and it is provided with a linger piece w, saidlever W being hung at a point intermediate of its length on one of the rods E. This lever is provided at its rear end with a plate or hanger having a slot ai', and through this slot passes a rod X, one end of which is fastened to the lever V, and the other end is vattached to a short lever Z. Said short leverl lies alongside of the lever 7W, to which it is connected by the rod X, and the hanger ai, and this short lever is pivoted as at on the machine frame, its other end being loosely connected with the rod G of the vertically sliding stems for the platen carriage. It will be seen that the lever V is adapted to aci; ldirectly on the rod G for raising the stems G and the platen carriage to the position indicated by Fig. (i, the rod X being arranged to play in. the slot of the hanger so as not to disturb the other lever NV. This last mentioned lever lV when depressed raises the hanger ai and the lrod X, the latter working the levers V and Z, so as to raise lthe rods G and the platen carriage to the position indicated by Fig. 2.

Anysuitable means mav be employed for operating the platen' J to `feed the paper yaround it, and means should also be ein bodiment of means'for moving the dogs out of action, a yoke Y is represented, the ends of which are pivoted on the ends of the carriage, one end of said yoke having a finger piece jj. The longitudinal member of the yoke ranges lengthwise of the carrier below the paper clamp, and this member is adapted to act against the dog O, so as to throw the dog carrier out of position and free both of the dogs from engagement with the rack.

Changes in the form, size, proportion, and minor details in construction may be made without departing from the spiritof rthe invention or sacrificing any of the advantages thereof, an make such alterations and modifications as fai rl'y fall within the scope of the invention.

Having thusl fully described the invention, what is claimed as new and desired to be secured by Letters Patent is 1. In'a visible typewriter, the combination of a keyboard,'typebars operated by the keys, a platen carriage foldable into substantially overhanging relation to the keys or the type-bars, a separable Iescapementmechanism for said carriage, said escape ment mechanism comprising means adapted to be actuated normally by the typewriter keys, means foldable with the platen carriage, together with means for shifting vertically the entire escape' lent mechanism.

2. In a visible typewriter, the combination of keyppera'ted levers, a type-bar for each lever, a platen carriage foldable forward into substantially overhanging relation Ato the keys or the type-bars, a carriage-tension mechanism for actuating said platen carriage, a separable escapement-ineclianism for said carriage, ,said esc'ipement mechanism comprising means adapted t0 be actuated normally by the typewriter keys and means foldable with the platen carriage, said lastmentloned means operating to hold the platen-carria ge against movement under the I action of a carriage-tension device when said carriage is folded to a non-working position, together with means for shifting the platen carriage and the entire 'escapement nrech:` nism vertically.

43. In a visible typewriter, the combination of key-operated levers, a type-bar f r each lever, a platen carriage foldable into substantially overhanging relation to the keys or the type-bars, a separable escapement mechanism for said` carriage, said escapement mechanism comprisng means adapted to be actuated normally' by the typewriter keys and means foldable v. ith the platen carriage, said escapemen't mechanism means on d1 therefore, reserve the right to 'l .bis eseapement l laos 4. In a visible typewriter, the combination of key-operated levers, a type-bar :forl eachlever, a platen carriage foldable nto substantial] overhan ng relation to the keys 0r type-Y ars, a rac and a dog-carrier foldable with the carriage, dogs on said carrier, @key-actuated means coperating with said 'dog-earlier said key-actuated means being i'uaected by the folding movement of the carriage and the dog-carrier and adapted to engaged automatically withthe dog-carwhen the cari-ia e is moved into osition for use, together wit means for shi ing the carriage, rack, dog-carrier, dogs and y-actuated means vertically.

5. Ina visible typewriter, the combinaltion of key-operated levers, a type-bar for y lever, a platen carriage foldable into a rack foldable with the carriage, a dog-carrier movable wi said {olda e carriage and provided with dogs which remain in coperative relation to the i rack when the carriage is folded and u n- .v ,-hlded, separable key-actuated means adaptwith thefdog-earrier when A' is in workinlposition, together with means for shifting e platen carriage,

I' w ntially overhanging relation to the.

a or type-bars,

- vertically.

'16. In a visible t Nevers, a. ype-bar or each lever, a platen y o damage dable into substantially overitl r lation to the keys or 'type-bars,

` means for an escapement mech- `I a on the carria e, and a dog caru with sai rack and kwith .ted means, said dog carrier a redeteimined .relation toV the key ment therewith, and disengagement t erethe carriage is adjusted to its from, when I A working and folded positions, respectively,

60 and means for shifting the platen carriage,

do carrier, and key-actuated means verti- Xea v "Ly In a visible typewriter, key-o erated levers, a -bar operated by each ever, a

carriage foldable into substantiall overhanging relation to the keys or typears,

' platen carri movable endwise on the car.- foldable therewith, a separamechanism' for said p aten a 40 carriage, key-actuated means for, said esvcapenienty mechanism, the said escapenient mechanism being movable with the carria e bed into and out of enga ent with an e ement oi the key-actuate means, and means dog-carrier and key-actuated means y writer, key-operatedv -actuated means for en geprising key-actuated means a for moving the platen carriage, bed and the 4e5 entire escapement mechanism in a vertical' direction. y

8. In a visible typewriter, type, key-operated means'or the type, a carriage bed foldable from a normal to an abnormal and' more compact` position, a platen carriage adapted to travel thereon, a rack, a dogcarrier on said carriage bed and movable therewith in its foldable Amovement, separable key-actuated means adapted to cooperate with the dog-carrier in the normal position only of the carriage, and means forgiving a relative shifting movement between the platen carriage and type.

9. In avtypewriter, a carriage bed foldable from a normal to an abnormal and more compact position, a platen carriage adapted t travel thereon, a rack movable with the platen carriage, a dog-carrier mounted onA the carriage bed and provided with dogs to engage with the rack,l and key-actuated means for engagement with the do -carrien 10.' n a visible typewriter, a carriage bed foldable from a normal to an abnormal and more compact position, a platen carriage ada ted to travel thereon, a rack movable 'wit the platen carria a dog-carrier mounted on the carriage ed and 'rovided with do to engage with the rac t, and a rockin ley-actuated frame having means forcooperation with the dog-carrier and separable therefrom durin the folding movement of the carriagebe 1l. In a ty ewriter, a foldable or shiftable carriage lied, a platen carriage adapted to travel thereon, a rack movable with the platen carriage, av dog-carrier mounted on the carriage bed and provided with dogs to engage with the'rack, a vertically movable rocking frame adapted to be operated at all times by the typewriter keys, anda-tappet mounted on the frame and coperating with-the dog-carrier. l

12. In a front-strike typewriter, a car'- riageY hed, a traveling carriage thereon, means for shifting the car-ria bed vertically, and an escapement mec anism comted for adjustment vertically and to maintain coperative relation tothe platen, carriage'.

13. In a front-strike typewriter, a carriage bed, a traveling carria ethereon, separate devices for shifting te carriage bed vertically for different predetermined distances, and escapement mechanism having key-actuated means adapted for adjustment' vertically and to" maintain a coperative re lation to said platen carriage.

14. In a front-strike typewriter, a carriage bed, a traveling carriage thereon, separate devices for shifting the carriage bed vertically for different predetermined distances, an escapement mechanism, Spacing and type-bar keys, and means cooperating with all the keys and the escapement mechanism in Whatever position the platen carriage may be shifted.

15. In a front-strike typewriter, a carriage bed, a traveling carriage thereon, separate devices for shifting the carriage bed vertically for dierent predeterminedk distances, an escapement member on the carriage bed, a rocking 'appet cooperating with Said member, and key-actuated means for said. tappet.`

1G. In a irontstrihe typewriter, a platen carriage (having a rack, a dog-armer, a rocking lrame havin;l a tappct 1n Vcoperative relation to the dog-carrier, mea-na .for adjusting the platen earriagc'and the traine "vertically, key-levers, a universal bar actuated thereby, and bell-crank connections between the universal bar and the rocking frame.

1T. In ay front-strike tyljiewritcr, al platencarriage having a rack, a -dmc-carrier, a rocking;l frame having a tappctin coperative relation to the dog-carrier, key-levers. type-hars, a spacing key, a universal bar cooperating with the key-levers and el'iacing levers, separate case lever-D` arranged to elevate the platen carriage and the rocking traine, means between the nnivereal bar and the rocking frame for'actuatingl the tappet at different points in the elevation of the platen carriage, and means whereby the platen carriage may be moved forward out ot' the path ofthe type-bare into a more compact position than when in use.l

18. In a typewriter, key-operated typebars, a platen carriage normally .in the path ot' said type-bars and adapted to be folded tov a position out o't' col'mrative relation to Said type-bars, and a separable cscapemcnt mechanism comprisingr a plurality ol elements, certain of which are norn'ially in cooperative relation to the key-actuated type? bars, other elements of said escapemcnt mechanism being foldable with said platen carriage 'when it is adjusted into and out oi: the aforesaid cooperative relation to the key-operated type-bars.

19. In a typewriter, type-bars, a platen carriage adapted to lie in the path of said type-bars and foldable from said position into a compact relation to another part of the typewriter when not ir use, an escapement mechanism, and means, lj'or actuating said escapement mechanisnn to control the etcp-by-step movement ol' said platen carriage, Said escapement meclmnisn'i comprising cooperatingr devices which-are separable when said carriage is adjusted to a position out ot' the path ol thetype-bars.

90. In a visible typewriter, the combina.`V

tion with key-levers and type-bars operated by said key-levers, of a'platen normally in the path of said type-bars and-movable ont of the path of the type-bars into compact relation to another part of the typewriter when not in use, and feed mechanism c0- operating;- with the platen and the liey- 7 levers when the latter are moved to operate the platen for letter spacing. i

21. In a visible typewriter, key-levers, type-bars operated bysaid levers, a vertically movable platen normally in the path of said type-bars and bodily movable lorward out ot the path of the type-bars into compact relation to another part of the typewriter to occupy lese epace than when in use, and separable feed mechanism cooperating` with the key-levers and operating' to more thc laten only when thelatter'is in its i'iormal position.

22. ln a. visible typewriter, the combination with key-levers and type-bars operated by Said key-levers, of platen normally in the path of said ty}')ebars and loldable, bodil)Y ont ofthe path of the type-bars into a compact relation to another part ol.E the typewriter when not in use, and a separable 90 feed mechanism a part only of which is ifohlable with the platen and the other parte ot said mechanism being` independent of auch folding' movement and coi'mratingg` with the key-levers to move the platen'for letter spacing, and only when the latter in its normal position.

Bil. ln a typewriter. the combination with l r \f-le\'ers and type-bars operated by said key-levers. of a platen normally inthe pathV ot' Said type-liars and JFoldable into a compact relation to another part of the type-v writer outjot the path ot the type-hars when not in use, propellingmechanism lor moving thc platen in a direction lengthwise thereof' 105 and boilily foldable with th e platen, and separable escapement mechanism coperating with the platen and the key-levers when the latter are moved to operate the platen for letter spacing.

2l. In a typewriter, key-levers, type-bars. operated by said levers, a vertically movn able platen normally in the path of said .j type-bars and bodily movable into compact relation. to another part of the typewriter to occupy lessispace than when in use, pro-- pellingmechanism for moving the platen in one direction and bodily movable therewith, and escapement mechanism coperating with the key-levers and operating to more the platen only when the .latter is in its normal position.

25. In a typewriter,I the combination with p key-levers and type-bars operated by said law-levers, of a vertically movable platen normally in" the path ot said type-bars and bodily movable out of the path of the typebars into a more compact relation to another capement mechanism support, key-levers, slotted ends, feed mechanism for moving` port of the typewriter' when not in use, propolling mechanism for moving the platen in one direction and pai-taking of the compact movement thereof, and a separable esa part only of which partakes of the compact movement of the platen and the other partsof said mechanism being independent of such compact movement and normally cooperating with the key-.levers to move the platen for letter spacing and only when the latter is in its normal operative position.

26. In a typewriter, the combination with a, support, of a platen mounted on said spacing levers having the platen .for letter spacing, bell-crank levers forming a part of said feed inechanism and pivoted to the sides of the machine, and auniversal bar extending over the key-levers and guided in the slotted endsy of the spacing levers and supported by said bell-crank layers.

,27. In a typewriter, the combination with a support, ofl a platen mounted on said support, key-levers, spacing 'levers having slotted ends, a universal bar extending over the key-levers and guided in the slotted ends of the spacing levers,

- heil-crank levers connected to said rock- Y ing frame,

a universal bar` links connecting the universal bar to the bell-crank levers, together with space levers having upturned slotted ends serv-ing as a guide for said universal bar and adapted to operate said bar to move the rocking frame.

29. In. a typewriter, the combination with a movable platen, of means for shitting the platen to diieient vertical positions, arms movable ,vertically with the platen, keylevers, and means including: bell-crank levers operatively connectingr the key-levers to the arms for operating said arms.

30. .ln a typewriter1 the combination with a-platen movable in two directions, of arms movable with the platen during,r one of the movements only, a transverse bar connected to said arms, a plurality ot' key-levers, and

mans operated by theI arms and bar. y

31. In a typewriter, the combination with a laten carriage movable in two directions, 0 arms movable with the platen carriage during one of tbc movements only, a pluthe key-'levers to rock y rality 0f key-levers, and a universal har connected t0 Said arms and located over said levers.

32. In a ty ewriter, the combination with a support, o a carriage mounted on said support, a carriage bed arranged on the support along which the carriage is adapted to travel and movable from a normal to an abnormal position and into a more compact relation to another part of the machine, key-levers, a rack bar movable with the carriage, an escapement mechanism having a spring-'actuated drum tending normally to force the carriage in one direction and partaking of the compact movement of the carriage, an arm pivotally held under the carriage bed, a spring normally forcing the arm in one. direction, fixed and pivotally held pawls carried by the arm so as to be moved tran versely of the rack bar in the are of a circ e, and'means vfor operating the arm to permit the carriage to have a step-by-step movement. A

33. In a typewriter, the combination with' a suppoit, o a carriage mounted on said support, a carriage bed arranged on the support alon which the carriage is. adapted to travel and movable from a normal to an ab-v normal and a more compact relation to an-.

other part of the typewriter when no t in use, a rack bar movable with the carriage,

an escapement mechanism having springactuated means the carria e in one otally hel carried by the arm so as to be moved transversely of the rack bar in thearc of a circle, and means independent from the arm for operatingv the armonly when in a normal position direction, an arm piv- 34. In a typewriter, the combination with a vshiftable carriaA e bed, of a carriage movable alon. the be both of which are bodily n l movable rom a normal to an abnormal position and into a more compact relation to another part of the typewriter when not in use/,a rack bar inova le with the carriage and provided with teeth on the under surl face. there-of, means normally forcing the carriage in one directionhan arm pivotally. held to the carriage bed so as to swing m the arc of a circle,A means carried by thel arm and adapted to engage the rack bar to y' l permit a step-by-step movement to be 'given to said carriage, key-levers, means sepa rable-l I from the said arm when the'carriage bed is*l moved to its' compact position and opera tively connected to the key-levers to operate said arm when the carriage bed is in its normal position only, and means for moving thel carriage bed, carriage, carriage forcing means, rack bar, arm and separale means tending normally to force under the .carriage vbed, means.

of and separable t to permit the carriage to have a step-by-step movement.E

ing the carriage and platen, a transverse bar, means for adjusting the carriage and platen` vertically, arms movable vertically with the carriage and having the ends of the transverse bar fixed thereto, said arms f being provided with slots at the upper `ends thereof, bell-crank levers having a projection entering .the slots oi' said arms carrying the transverse bar, a. universal bar, -and links connecting the universal bar whereby the carriagemay be inentit be in as moved by its mechanism Whatever adjustthe said universal bar is operated.

3G. In a tvpevs-'ritelg the combination with a carriage having a platen mounted thereon, of letter-spacing mechanism :tor operating the carriage lan'cl platen, means for folding the carriage and platen to a compact position, means for shifting the carriage and platen vertically, arms movable vertically vvitn the carriage, said arms being provided with slots at the upper ends thereoi", bell-crank means operated by said arms for engaging a part ot theI letter-spacing mechanism` a universal bar, and links connecting thebelicrank levers to the universal bar whereby the carriage may be moved by its mechanism Whatever its vertical shifted position.

37. In a typewriter, the combination with a carriage having a platen mounted thereon, of letter-spacing mechanism for operating the carriage and platemmeans for shift-- ing the carriage and platenyertically, arms movable vertically with the carriage, belllcrank levers operatively connected to said verticallyT movable arms, and key-operated means for operating the :bell-crank leviers.

,38. In a typewriter, the combination With a carriage having a platen mounted thereon, of letter-spacing mechanism for operating the carriage and platen, a transverse bar, means for shifting the carriage and platen vertically, arms movable vertically with the carriage and having the-ends of the transverse bar fixed thereto, lsaid arms being provided with slots at the upper end thereof, bell-crank levers pivoted adjacent to the vertically movable arms, means carried by said bell-crank levers and entering the slots of said arms, a universal bar, and links connecting the bell-crank levers to the universal bar'.

39. In a typewriter, the combination with a carriage and means for moving the same vertically, of letter-spacing mechanism for the carriage, an escapement operating frame forming a part of said mechanism and having vertically movable arms, and `means for rocking the arms whatever 'their position.

40. In a typewriter, the combination with a carriage, of letter-spacing mechanism for bell-crank levers to the levers having a part carried, therebv enterinor the slots ot said arms` a vertically the carriage, means for moving the carriage laterally with respect to its letter-spacing movement, an cscapement operating frame forming a part of said mechanism and having arms movable laterally with the carriage, key-levers, and means operated by the key-levers for rocking the arms of the escapement frame Whatever their position.

41. In a typewriter, the combination with a carriage and means for moving the same verticali f', oi escapement mechanism for the carriage having an escapement frame as a part there/it, vertically movable arms forming a part of said 'ame, bell-crank levers operating the vertically movablearms, and means for operating the bell-crank levers.

ai?. In a typewriter, the combination With a carriage and means for moving the same, 'of escapement mechanism for the carriage having an escapement frame as a part thereof, arms forming a part or said frame, bell- 4 crank levers operating the arms, and means for operating the bell-crank levers.

a3. In a typewriter, the combination with a vertically movable carriage, of an escapenient frame having verticallymovable arms, a transverse bar connected to said arms, bell- 4.crank levers having a pin-and-slot connection with said arms, a universal bar, a plurality of key-levers ior operating said latter bar, and links connecting the universal bar to the bell-cra lc levers.

a4. ln a typewriter, the combination with a movable carriage, of an escapement frame having arms, a transverse bar connected to said arms, levers having a pin-and-slot connection with the arms, a universal bar, a plurality of key-levers for operating Said latter bar, and means connecting the universal bar to the tiret-mentioned levers. 45. In a typewriter, the combination with movable carriage, of an escape- -ment frame having vertically movable arms,

a transverse bar connected to said arms, bell- Acrank levers having a connection with said arms, a universal bar, a pluralityof keylevcrs for operating said latter bar, and means connecting the universal bar to the bell-crank levers.

46. In a typewriter, the combination with a carriage, of letter-spacing mechanism for the carriage, means tor moving the carriage laterally with respect to letter-spacing movement, an escapexncnt operating frame formingl apart of said mechanism and having arms n'xovaole laterally with vthe carriage, and their position.

47. In a visible typewriter, the combination, -with a support, of a platen carriage mounted on said suplibort, key-levers, spacing' levers having slotted ends, escapement mechanism for moving the platen carriage for letter-spacing, bell-crank levers pivoted means i'or rocking4 thc arms whatever to the sides of the machine, a universal bar extending over the key-levers and guided in the slottedv ends of the spacing levers and supported by said bellcranll' levers, and means operated by the bell-crank levers for operating the escapement,

48. 1n a visible typewriter, the combination of a main frame, a platencarriage mounted to travel transversely of sai-d frame, key-levers, spacing levers having slotted ends, a universal bar extending over the keylevers and guided in the slotted ends of the.

spacing,r lovers, means co erating with the universal bar to `operate t e platen carriage for letter spacing, and means whereby the platen carriage may be moved to an aonormal compact position out of letter spacing connection with theuniversal bar.

49. In a visible typewriter, the combina- 'tion of a movable platen carriage, means for shifting the platen carriage to different vertical positions, arms movable vertically with the platen carriage, lkey-levers, means including bell-crank levers operatively connecting the key-levers to the arms for operating said arms, means operated by said arms to letter space the carriage, and means whereby the carriage may be moved out of letter spacing connection with-said arms.

50. In a-visible typewriter, the combination with a platen movable in two directions,

lof arms movable with the platen during one the carriage and platen, means for shifting the carriage and platen vertically', arms movable vertically with the carriage, bell-v crank levers operatively connected to saidY vertically movable arms, key-operated means lor operatingr the bell-crank levers, and means whereby the platen carriage and a part of the escapement mechanism may be moved to an abnormal and compact position out of operative relation with said arms.

ln a typewriter, the combination with a carriage having a platen mounted thereon, oflettcr spacing mechanism for operating the carriage and platen, a transverse bar, means for shifting the carriage and platen vertically, arms movable vertically with the carriage and havingr the ends of the transverse bar ixed thereto, said arms being provided with slots at the upper end thereof, bell-crank levers pivoted adjacent to the vertically movable arms, means carried by said bell-crank levers and entering the slots of said arms, universal bar, and. links conmeeting the bell-crank leversito the universal bar, and means whereby the `platen and car-I riage may be moved to an abnormal posi- K tion out of letter 'spacing operative relation to said transverse bar.

53. ln a visible typewriter, the combination with a platen carriage and means forK moving the same vertically, of letter spacing mechanism 01.' the carriage, a frame having vertically movable arms adapted to operate said letter spacing mccl'uinism, means for rocking the arms whatever their position, and supporting means for the platen earriage for moving the same to an abnormal compact position out of letter spacing op-` erative relation with said frame.

54. In a visible typewriter, the combination of a platen carriage, of escapement mechanism for the carriage, means for Inov- .mg the carriage laterally with respect to its letter-spacing movement, a trame having a ltransverse bar carrying a partof said escapen'ient mechanism and having arms mov-- able laterally with the carriage, key-levers, and means operated by the hey-levers for rocking the arms or". the frame whatever their position.

55. In a visible typewriter, the eombina= `tion with a carriage and means for moving the Same vertically, of escapement mechanism includmg a tappet for the carr1age, a

rocking frame, vertically movable armsA forming apart of said frame, bell-cran levers operating the vertically movable arms, means forv operatingr the bell-crank levers, and supporting means for moving the platen carriage to an abnormal position out of operative relation to said frame.

56. In a. visible typewriter, the combination of a platen carriage and means for moving,r the same, a rocking frame, 'aseparable cscapement mechanism for the carriinge adapted to be operated by said frame, arms 'forming a part of said frame, bell-crank levers operating the arms, and means for operating the bell-crank levers.

57. In a visible typewriter, combination with a vertically movable ,platen carriage, of a 'fran'ie having vertically movable arms, arms, bell-crank levers connected to operate said arms, a universal bar connected to operate the bell-crank levers, a plurality of hey-levers for oi'ierating said bar, and separablc means operated by the trame for operating said platen carriage for letter spacing when thccarriage is innormal operative position and having a part thereoi' movable to an abnormal compact position,

58. In a visible typewriti-rr, the combination of a platen carriage, letter spacing mechanism for the ca rriage, means for giva transverse bar connected to saidl O' i i I i 13,935

j ingftheI-Jlaten vcarriage a case shift move-y. This specification signed this 19th day of 10 l Qmlt `with respect to the letter spacing May, A. DL 1915.

movement, a frame carrying a part of said CORONA TYPEWRITER COMPANY, INC., mechanism and havln arms shlftable wlth ,By GARLETON F BROWN,

-51the1carriage, means or rockingthe arms Treasurer- 3 i whatever their position, and supporting means for moving the platen carriage o'ut of Witnesses: l its operative letter spacing relation with the N ORMA STEWART,

frame. ROBERT BAsToN.

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