US1070747A

US1070747A - Type-writing machine.

Info

Publication number: US1070747A
Application number: US475930A
Authority: US
Inventors: Burnham C Stickney
Original assignee: Underwood Typewriter Co
Current assignee: Underwood Typewriter Co
Priority date: 1903-04-17
Filing date: 1909-02-03
Publication date: 1913-08-19
Anticipated expiration: 1930-08-19

Description

B. C. STIOKNEY.

TYPE WRTNG MACHINE.

APPLIUATION FILED FEB. 3, 1909.

Patented Aug. 19, 1913 a SHEETS-SHEET 1.

W/ TNESSES B. C. STC'KNEYx TYPE W APPMGATION UL RITING MACHENE.

Patented Aug. 9, 1913.

3 SHEETS-SHBET 2.

B. C..STIGKNEY. TYPE WRITINQMAGHINB. APPLICATION :FILED mlm, 1909.

it/0,74?. Patented Aug. 19, 1913 3 SHEETS-SHEET 3.

UNITED STATE-s rrrrnnr orme-n.

BURNHAM C. STICKNEY, OF ELIZABETH, NEW JERSEY, ASSIGNOR TO UNDERWOOD TYPEWRITER COMPANY, OF NEW YORK, N. Y., A CORPORATION OF DELAINARE.

TYPE-WRITING MACHINE.

Specification of Letters Patent.

Patented Aug. 19,1913.

Original application filed April 17, 1903, Serial No. 153,024. Divided and this application filed I'."c"eb3:uary 3,

i909. seria1n0.475,93o.

To aU eli/tom t may ooncem Be it known that I, BURNHAM C. STICK- NEY, a citizen of the United States, residing in Elizabeth, in the county of Union and State of `New Jersey, have invented certain new and useful Improvements in Type- Vriting Machines, oit' which the following is a specification.

This 'invention relates to front strike platen-shift machines.

This application is a division of my application No. 153,024, tiled April 17, 1903, (Patent No. 1,054,4700 on which is claimed the arrangement of ribbon-spools on a trame below the platen carriage, the frame being hinged to the general framework, for the lpurpose ot swinging the spools up into acwith the types.

cessible positions when desired, and returningrr them to normal position under the carriage when the carriage is Jfolded down to bring it into coperation with the type bars. This divisional application covers the caseshifting features.

The platen is mounted on a carriage which runs upon a support,'and the support is mounted to shift u p and down to enable dilerent types to print, the carriage being provided with a Jfeeding mechanism.which aecommodates this up-and-down shitting movement. The shittable carriage support can also be swung up to move the carriage bodily out of coperative relation with the types, thereby giving access to the under side ot' the platen and carriage, as well as to that portion of the typewritiug mechanism which lies below the carriage, for the purposes of inspection, cleaning, repair, manipulation, etc.

The carriage-driving spring barrel is mounted to shi-ft with the carriage, which hence need not be formed of two parts hinged together, one part carrying the platen and the other part carrying the rack, which does not shi-tt with the carriage, as heretofore. The letter-feeding dogs are also arranged on the shifting carriage-supporting frame to shift with the carriage, and provision is made whereby the keys iipon the framework of the machine may operate said dogs when the frame and carriage are brought down'into closed relation with the main framework of the machine to coperate The spring-propelled carriage is held against being driven by the spring when the carriage is swung up away from the type bars.

Other features and advantages will hereinatter appear, and my invention further consists in certain combinations of devices, features of construction and arrangement ot parts, which will be hereinafter fully described and particularly pointed out in' t? concluding claims.

In the drawings forming part of this specification, Figure 1 is a longitudinal sectional elevation of a front strike writing machine embodying my improvements, one type action being shown in printing position, and the carriage being` shown in full lines in normal position, and in' dotted lines when tilted up to render the ribbon spools accessible to the operator.; the position of the platen when capitals are being written being also indicated by dotted lines below the full-line position. Fig. 2 is a plan; and Fig. 3 is a sectional front view of the ma chine.

In the several views portions are omitted or broken away for the sake of clearness; and like signs denote like parts.

The framework of the machine comprises side walls 1, whose lower portions may be connected to form a base, and a top plate 2 supported upon said walls; a portion of the top plate being depressed, as at 3, to make room for the paper carriage and its supports.

Forwardly extending type bars .4 are pivoted at their'rear ends upon a curved ful- Crum-rod 5 mounted in a/segment 0, and strike rearwardly against a cylindrical or other platen 7. The segment is radially slotted at 8 to receive the type-bar hubs; and preferably both the segment and the fulcrum-wire incline upwardly and rearwardly, so that the types may 'strike upon the front siderof the platen at a point a little above the horizontal plane of the platen axis. Each type-bar is provided with a lower-case type 9 and an upper-case type l0, `the former being uppermost when the type bar is in printing position, although this relation may' be reversed within the scope otmy improvements, and the typehaifs maybe otherwise mounted. The type bars may be operated by any suitable means,

extending lerers l2 connected to the links and bearing at their forward ends keys i3;l

Said hey-levers being tuleruned et their rear ends upon a transverse bar let., and being provided with returning" springs l5.v

rhe platen may be mounted by means o't an axle lo upon a carriage which may be ot any suitable eonstruliftion, and is illustrated comprising' side bars 17, united at their rear ends by a longitudinal har 18, said side bars extending rearwardly from the platen a-Xle; and arms it) extending downwardly and rearwardly from the platen axle, and connected at their lower ends by a longitudinal carriage-guiding bar 20. Upon a forwardly protruding boss 2l about midway of said bar 2O is mounted a carriage roll Q2, which runs upon a horizontal rail 23, provided upon its rear side with a depending Harige 24., Secured by screws QZ upon the rear side of this flange are opstanding arms 26, which support a eylinrlrieal rail 27. The earriagefbar i0 is bored longitudinal to slide along upon this rail 2T, and is also recessed upon. its under side at QS to pass the arms 26. The n'iembers 2?) and 27 are eonneoted totori-n a two-track strueture which Wholly supports the carriage. A 'finger 29, secured the carriage-roll screw 30, hooks under the front edge of the ,rail Q3, thereby eopemtingi,r with the bar 2O to hold the earriage upon the rails. A feeding-in roller 31 1 may be mounted in rear ot the platen upon upon the platen.

links risingl 'trein ears 33 on the euri-lagebar 20; and said links may be yn-ovided with 'rearward]fyi-extending lugs 34 for reeeivmg legs 35 of a paper-shelf .536. From the ti-ont side of the bar 20 may project orwin'dly and upwardly extending arms 537, upon whose forward ends may be hinged at, 38 a hail consisting of apair of upwardly and forwardly extending arms 39 and a platen-scale 40 fixed upon the forward ends of said arms and provided with an apron ll upon its rear side contiguous to the platen; the upper edge of'said seals being below' the printing` line One or more pressure. rollers l2 may bo mounted upon an axle llf3 mounted at its ends in said arms 3f) about vrind-way ot their length. Any suitable 'springs may be provided for the front ,and

rear pressure rollers. So l'ar as my present ,improvements are eoneernwl, the rari-lage,

paper-feeding' means and earriage-supporting and guiding bars or rails may be ot any other desired eonstruet ion.

The 'flanged rail. 23, !ll'orms part oll a movable frame or support, whereby the paper'carri'age is enabled not` only to run in letter-space direction, but, to. move also in a direction transverse thereto. This 'trame or support comprises, in 4addition to lsaidrail (which. need not ,he flanged in all` eases)l rearwardly extending arms Zl1l,"\vhieh Vare vrevenu united at their forward ends. by said rail. and a rock-shaft 45, which unites the war Iends of said arms, said rook-shaft beine' horizontally mounted or hinged upon pintles etti, working in ears 47 projeeting torivarillji' from the front portion ot the rear pari oi' theI top plate Q. The carriage und its support may be swung together up about said hinges and tilted rearwardly to the dotted line position at Fig. l, so as to expose the underside of the carriage. Said support may, however, be otherwise. l'ornun'l and otherwise inovably supported with'n the` scope ot' my improvements.

n rear of the type bars and below the platen is mounted upon an axle or axis 4S a pair of ribbon spools 49, 50, said axis being; horizontal,` and said spools being arranged Von edge and side by side. The axis 4S,

which extends transversely of the maehine, that is, from side to side thereof, or from lett to right., is mounted in and translixes the lower end of a forwardly und downwardly extending arm 5l, preferably east integral with the rock-shaft 45, and havi'nfjr an, elongated boss 52 Jfor sifiitably sul'iporting the axis 48. lt will be perceived that when in normal position the ribbon spools are inaccessible to the operator, but that when the hinged frame or support is swung up to the dotted linev position at Fig. l, said spools are l brought to an aeeessible position, for convenience. in examining or adjusting or attaching the ribbon, or of detaehing ori-eplaeing the spools, ete. The depressed portion 3 of the top plate is preferably elett, as at 53, to malte room tor the spools, whieh in normal position dip below said depressed portion.

For rotating` the spools, l preferably use a pair of pawls 54, 55, operated at every type stroke, and adapted to engage a pair ol'.

ratehet wheels 5G, associated with the ribbon spools. The latter muy be slipped o tl' and onto the axis 47S, being retained by thumb-nuts 5T; and each ratchet wheel may be connected to itsspool by a eollar or other device 5S, so that one spool with its ratchet may turn upon the axis independently ot the other spool and its ratehet.. lt' desired, the member 5S may be splined to the spool,

as at 58a, so as to permit the latter to he slipped oil; or the axis 48 may be divided into two lengt-hs, one fixed lo and revolving with each spool )and ratchet; or any other suitable spool-mounting and revolving means may be employed `within the seope ot my invention. Une rat-:het may be omitted, and the other fixed to an undivided axis', and the spools may-be alternately clamped to the axis by the thinnb-nuts 57, so as to cause the ribbon to wind first on one'spool and then on the other.

From one spool the ribbon 3,9- is led i'or- War ly and upwardly, as at 59, then aerofss the printing point at the front side of the platen, as at 59h, and then back to the'other spool, as at 59C. At the front side of the platen are provided ribbon-guiding arms Gt) 'and 6l, formed at their upper ends with re- .from the rock-shaft 45 of the carriage-snpporting hinged' frame, and arm 67 overlying` the spool-carrying arm 5l. By this vibrator, the ribbon may be lifted to cover the printing point at each impression, as at Fig. t, and depressed to uncover the same; and since the vibrator is mounted upon the hinged frame,'it is carried up with the latter when tilted to the dotted-line position at Fig. l, thus -facilita'ting the reeving of the ribbon from the spools over the guiding arms 62 and 63. Said ribbon-vibrator is operatively connected to carriagefeeding mechanism also mounted upon the hinged carriage-supporting frame and cooperating with a rack 69 on the carriage; said feeding mechanism comprising a detent dog 70 and a feeding dog 71, the latter being normally in engagement with the rack. rl`hese dogs are mounted upon a rocker or rock-shaft T2, mounted upon ears 73 and 'Tel upon the roekshaft 45; and said rocker T2 is provided with an operating arm i5 which curves downwardly 'and rearwardly beneath the rock-shaft. 45, in position to he operated by a finger or tappet 7G projecting forwardly from the upper end of an opstanding rot-kererni 77, fixed upon a rock-shaft TS mounted transversely in the base of the maehine. Said rock-shaft 7S carries near its ends t'orwardly directed arms T9, from which is snspended, by means of rods St), a universal bar 81, extending transversely beneath all oi" the nvm-operating key-levers l2. so as to he operated at each type stroke` and eonipletiim` the train of mechanism whereby the letter feeding movements of the earriage are eontrolled. The universal-bar and rocker TS may'be returned to normal position by aV spring S2; and a returning-spring Si?, l'or the dog-rocker may be coiled about the shaft 72, The connection between the latter and the ribboii-vibrator consists of an arm Si mounted upon shaft 7i), a pull-link 85 connected to saidarm and extending forwardly.y and an arm 8f3 connected to said link and mounted upon the vibrator shaft (itl. By this means, whenever 'the dog-rocker is vibrated by the keys, the vibrator is elevated to cause the ribbon to cover the printing point; and upon the return of the carriagefeeding mechanism to normal position, said vibrator drops to permit the ribbon to uncover the printing point.

The carriage may be propelled by a spring-barrel ST (lligs. Q and 3), -mounted upon an arm 8S, projecting laterally and downwardly from the side-bar 441 of the hinged caridage-supporting frame; and a strap 88 may connect the spring-bai 'el to the carriage. mounting botn the spring barrel and the carriage-feeding mechanism upon the hinged frame, the latter is permitted to swing freely up and down, without liability of deranging the carriage-coiiti-olling devices, which always maintains their proper relation to the carriage, although by reason of the arm 75 swinging away from the finger TG, the latter cannot of course operate the feeding mechanism when the earriag'e is tilted up.

'The ribbon-feeding pawls 54 and may be pivoted at their rear ends upon arms S9 npstanding from the universal-bar rocker 78.. and provided with draw-springs 5)() eonneetedat their lower ends to the. pawls and at. their upper ends to the arms whereby the pawls may be held in engagement with 'the ratchet wheels 5G; eaeh pawl being' provided with a stop 91, to prevent undue upward movement thereof when the ratchet wheels are swung away from the pawls at. the tiltingy up of the carriage. Behind the pawls is mounted in the side walls of the machine va horizontal shaft 92, havingA an operating handle 93, and ':arrying wings tlf-l, 95, the latter being shown as lifting an arm 9G projecting rearwardly from the pawl so as to hold the toothed end of the latter down out of enojagement with its ratchet wheel. The shaft may be rocked to depress the wing 95 and allow .said pawl to retin-` gago the ratehet-wheeh while the other wing Slt rises and lifts an arm 9T provided upon the other pawl, and throws the latter ont, of eiigageinent'.y whereby the feed of the ribbon is reversed. Any other suitable ribbonfeeding' and reversing ribbon may be eniployed, and the ribbon .spools may be otherwise disposed within the limits of my invention. Preferably advantage is also taken of the hinging ofl the carriage-support. to enable the latter t'o'be shifted up and down tol enable different types to print. Normally the carriage and platen are in an elevated position, as seen in full thereby enablingl the lower-case types 9 to print; while by`depressing the carriage and platen (the latter in its depressed position being indicated by a dotted circle atlfig. l), the upper-case types l() are venabled to print. rIhe downward movement of the carriage is limited by a pair ofadjustalole stops 98, and

lll)

lines at Fig. l,l

kwhich is fulcrumed at its rear end upon a shoulder-screw 10st, and is provided between its ends with a verticall thrust-rod 105, which is guided at its upper end in an eye 10G termed in the depressed portion 3 of the top plate, and contacts with a boss 107 formed upon the. under side ot' the side arm 44tot' the hinged frame, ythereby supporting the latter. A stop-pin'lOS, overlying the lever 102, prevents undue upward movenient ot the latter when the carriage is tilted up. The lever 10?) is provided with a key 104, by pressure upon which the pull of the spring 101 may be overcome, and the lever 108 and rod 105 carried down, permitting carriage and hinged trame to 'drop and rest upon the screw-stops 9S. t

The hooks 09, which. extend thronglraeyes 103l in the top plate 3, are tiXed upon a rock-shaft', 100,-whereby they may be vibratcd forwardly to release the hinged traine and carriage, to permit the latter to be tilted up; said rock-shaft being provided with a returning spring 107, and being mounted in eccentricnuts 10S, by the adjustment of which the hooks 09 may be elevated o1' lowered so as to position the platen with accuracy. 1t, will be noted that' the hinge 40 ot the carriage-supporting traine. is in rear oi and below the platen, so that the latter may shitt downwardlyand forwardly in a direction agreeing substantially with the tip of the typchbar segment; (3` the forward movement being in this instance, however, very slight.

At Fig. i?) it will be noted that the ribbon comes up in direct. paths trom the spools to" the trout side ot' the platen, and that the ribbon-guiding` arms 00, (il are widely ,sepa-y rated. so as to expose to view somewhat more than `one oet' the major divisions upon the platen scale. so that. atleast one ot the whole. ruunbcrs marked upon the platen scale is always visible. to the operator between .said arms. and he can readily determine at what point the ca'irriage is standing, an index 100 being preferably 'termed upon the cross-liar (tl t'cr this purpose. lhc type- `guide-has a` type-mening '110 above the platen scale. and arms lll and 112` extending` laterallyhud downwardly from said opening. in av manner to leave exposed all ot the 'platen scale'wliich is visible between the,",ribbon-guiding arms G0 and Gl; .said type-o'uiding 'arnis being'connected at their bases by a bar 11?), and the type-guiding frame being secured upon the depressed p01'- tion of the top-plate 3 by arms 114 and screws 115. At Fig. 1 -it will be seen that the type-guiding frame is tipped rearwardly and substantially parallel with the plane or' the type bar pivots.

lVide v'ariations in the construction and operation ot the ditlerent mechanisms may` be resorted -to within the scope of my inven- Ation, and portions of my improvements may be used without others. .l

The application No. 153,024, iled- April 17, 100B, contains claims covering ribbon'devices, and the present application is intended to cover `platen shitting and correlated devices all independently ot the ribbon devices.

1 do not claim to be the first inventor of an up-and-down shifting platen. Certainof my improvements, however, are applicable where .the platen shifts up and down,'the exact direction of such movement beingirnmaterial.l In using the term vertically in suoli claims as cover said improvements, I intendtto include all movements in an upand-.down direction.

'Illaving thus described my invention, I claim:

1. ln a. visible-writting typewriting machine in which the type-bars swing upwardly and rearwardly to the platen, the combination of a main frame, a laterally-movable platen carriage, and a shift-trame which entirel; supports the carriage and is pivoted to the mainA trame to swing up andl downto 100 place the platen in diti'erent printing positions, said shift-trame being connected to the main trame by separated pivots located in rear of the platen and parallel therewith, substantially as set forth. 2. 1n a typewriting machine in which the type-bars swing upwardly and rearwardly to the platen, the coiubinatimi ot a laterallyniovable platen-carriage, a 1main trame, a rigid shit't-l'rann provided with the carriage- 110 sui'iporting track along .its front side, the shift-traine being pivotally connected to the niain trame by two pivots aty its rear, and an escapcment device supported on the. shifttranie between the pivots thereof.

3. ln a front strike writing machine, the combination ot a series of rearwardlystriking types, a platen. a platen carriage, a y iframe whei'eon said platen carriage runs, said 'trame being hinged in vrear of the 120 platen, a spring-pressed .device sustaining said trame. and a stop against which said trame is held by said spring-pressed device, said carriage'and trame being movable in opposition to said spring-pressed device.

Lt.. ln a. trout-strike writing machine, theJ combination ot a series of rearwardly-strik` ing type bars, a platen, a platen carriage, a 'trame whereon said carriage runs, =said 'trame being hinged to shift up and down -to' 130 enable different types to print, a platen scale supported contiguous to the platen and below the printing oint, and an index on frame toshift iip and down with said sca e.

` 5. In a typewriter, the combination of keys, key-operated type-bars` a platen carriage normally in the path of said type-bars and movable to a position out of cooperative relation with the type bars and also shiftable to enable dierent types to print, and key-controlled escapement mechanism comprising elements connected to the platen carriage to move therewith when the carriage is shifted to diiiere'nt printing positions or moved out of coperative relation with the type bars.

6. in a typewriter, the combination with types, of a platen, a platen carriage, pro-` pelling mechanismv for the carriage, and escapement mechanism for the carriage, said platen being normally in the path of type bars and being both shiftable, together with said Acarriage propelling mechanism and -Aescapement mechanism, to upper and lower case positions, and also movable, together with the carriage propelling mechanism and escapement mechanism, to a position out of the path of the types, said escapement mechanism constructed to be effective to feed the carriage when the platen is in the path of the types. l

7. ln a typewriter, the combination lwith va stationary framework, of type-bars, a hinged frame supported on said framework, a platen carriage mounted to travel on said hinged frame and shift'able with the frame to upper and lower case positions, said carriage and frame also being adapted to swing to a position out of cooperative relation to the type-bars, said carriage being provided with a feeding rack, feed-dogs pivoted upon the hinged frame to coperate with the rack, and type-controlling keys having means to operate said dogs.

8, In a typewriting machine, the combination with types, type-operating keys and a platen, of a carriage for the platen, a frame on which the carriage runs, the platen being shiftable to positions for upper and lower case. letters, said frame being hinged to swing the carriage and carry the platen upward out of coperative relation with the type, aletter-feeding rack on the carriage,

and letter-feeding devices on said hinged frame to coperate with said rack.

9. In a. typewriting machine, the combination with types, type-operating keys and a platen shiftable to upper and lower case positions, of a carriage for said platen, a frame on which the carriage runs, said frame hinged to swing the carriage and carry the platen up and out of cooperative relation with the types, a letter-feeding rack on said carriage, letter-feeding devices on said hinged frame to cooperate with said rack, and means controlled by said keys for operating said letter-feeding devices only when said platen is down in position to cooperate with the types.

l0. T he combination with rearwardly striking types, a platen, and a two-track structure under the platen, of a platen carriage wholly supported on'said track structure, arms extending from said track structure, and means pivotal'ly connecting said arms to the main frame of the machine for an up-anddown shifting movement of said track structure, to enable different types to print.V

ll. The combination with rearwardly striking types, a platen, and a twotrack structure under the platen, of a platen carriage wholly guided by said track structure, arms extending rearwardly from said track structure and hinged to the framework of the machine, and means for swinging said armsl and track structure up and down, to enable dierent tvpes to print.

12. The combination with rearwardly striking types, a platen, and a two-track structure under thcplaten, of a platen carriage whollv guided by said track structure, arms extending rear\\'ardly from said track struture vand hinged to the framework of the machine, means for swinging said arms and track structure up and down` to enable different types to print, and a spring opposing the weight of the platen carriage. j

13. In a typewriting machine having a framework, the combination with a platen and types mounted to strike on the front thereof, of a carriage for the platen, a frame on which the carriage runs, said frame hinged to the framework of the machine to permit the frame and carriage to swing upwardly to give access to the under side of the platen and carriage and such portion of the typewriting mechanismaslies below the carriage, and letter-feeding chanism for said ,carriage including a key-controlled member upon said hinged frame, and a keycontrolled means for shifting the platen, carriage and hinged frame to enable different types to print. v

'14. In a front strike writing-machine, the combination of a series of rearwardly strik'- ing types, a platen, a platen carriage, a support whereon said carriage runs, said support shiftable up and down to enable different types to print, and also capable of bcing swung upwardly to enable the under side of the carriage to be exposed, and means shiftable with the carriage for controlling the longitudinal movement thereof.

l5. In a front strike writing machine, the combination of a series of rearwardly striking types, a platen, a. platen carriage, a support whereon said carriage runs, said support shiftable np and down to enable dierwardly and rearwardly to the platen, the combination of a main trame, a laterallymovable erringe,A and a shift-frame which entirely supports said carriage and is pivoted to the main trame to swing up and down to place the platen in ditlerent printing positions, said shift-trame comprising a carriage track which extends laterally past the pivotal connection ot the shift-trame with the main trame.

Y 27. In a type\\'i'iting machine in which the type-bars swing upwardly and rearwardly to the platen, the combination ot' a laterally- Inovable platen-carriage. a mai-n trame. and a rigid rectangular shift-trame pivoted at its rear portion to the main frame to swing up and down, and comprising a track which entirely supports the carriage and is located wholly in front ot said pivotal connection, substantially as set forth.

28. In a. typewriting machine in which the type-bars swing upwardly and rearwardly to the platen, the combination 'of a laterally-movable platen-carriage, a main frame, a rigid rectangular shift-frame having a supporting-track for the carriage along its front, the carriage being wholly supported on said track. and a pair of separate pivots connecting the vrear of the shift.- frame to the main frame.

99. In a typewriting machine, the combination with a platen and types striking against the front thereof, ot' a carriage tor said platen, a trame or support. whereon said carriage travels, said support and carriage shittahle up and down to enable ditterent types to print, a spring or motor for propelling .said carriage, said spring mounted on said support to shitt therewith, said carriage provided with a rack to shift therewith, and cscapement devices forV said carriage including' means to cooperate with said rack and acconnnodate such shitting movements thereof.,

3l). ln a front strike writing machine` the combination ofrearwardly striking types` a.

platen, a platen carriage, a rigid trame whereon said carriage runs. and a hinge dovice-sulriporting said Jframe in rear of the platen, said trame being connected to said carriage to shitt the same up and down to enable different types to print` and to swing the same up to expose the underlying purtion of the machine.

31. In a trontstrike writing nrarhine. the combination ot a series ot"rearwardly inclined ,striking type hars. an upwardly and rearwardly inclined segment whereon they are pivoted. a platen. aplaten carriage having a feed-rack and a trame whereon said carriage runs, a hinge device supporting said frame in rear ol'A the platen a'nd below the printingl point. and said carriage` including said rack, being wholl)Y supported on said frame, said frame and carriage being carriage, said stock releasable to permit the trame and carriage to he swung up to render the underlying portion et' the machine accessible.

33. The combination ot a carriage, a frame whereon the carriage runs, ay hinge device to attord a support to said tramc,a case-shifting mechanism for operating said frame, and opposing stops for said frame, said frame being littable outof position for oooperation with the' types.

34. ln a typewriting machine, the combination with aplaten and types mounted to strike on the front thereof, of a carriage whereon said platen is mounted, a frame whereon said carriage travels, said frame hinged upon the framework of the machine to shift up and down to enable di'erent types to print, a carriage propelling device mounted on said hinged frame to shifttherewith` and a carriage escapement mechanism including a rack on said carriage and a cooperating device also mounted onsaid frame to shift therewith; said frame being also littahle away from a position to cooperate with the types.

35. In a typew-riting machine having a iramework, the combination with a platen and types l-inounted to strike on the front thereot,`ot a carriage for the platen, a trarne on which the carriage runs, said trame shittable. up and down to enable different types -to print, and letter-feeding mechanism tor a key-operated meinsaid trame being eamovement. together said carriage including ber to shitt therewith; pahle ot a swinging with said carriage and letter-teedingmechanism. to give access to the under side ot the carriage.

ll. ln a typewriting machine, the conihination with a platen and types striking against the front thereot'. ot an escapementcont-rolled carriage Jfor said platen, il support whereon said carriage travels, said snpport. pivot'ally connected with the main l'rame ot lhe machine to shift up and down to enable dillerenl types to print,and a carriage-propelling spring mounted on said support to shi tl thermvith. said support also capable` ot swinging up. together with said eariiage and spring, to expose the under side of the carriage.

said member of said 37. In a typewriting machine, the combination with a platen and types striking against the front thereof, of a carriage fo'r said platen, a support Whereon said car- -riage travels, said support and carriage shiftable up .and down to enable different types to print, said carriage having a rack, escapement devices to cooperate with said rack and accommodate' the shifting movements thereof, and a carriage-propelling sprii. gmounted on said support to shift there- With; said support capable of being moved, together with said carriage and spring, up from the body of the machine to' expose the under side of the carriage.

38. In a front strike typewriting machine, the combination of a series of rearwardly-strikingtypes, a platen, a platen carriage, a frame upon which said carriage runs, aspring for sustaining said frame and carriage in normal position, said frame and carriage being shiftable together up and down to enable different types to print, and also movable together to expose the under side of said platen.

39. In a front strike Writing machine, the combination of a series of rearwardly-striking types, 'a platen, a platen carriage, a frame or support whereon said platen carriage runs, a stop, and resilient means to hold said frame against said stop, said carriage and frame being movable against the vresistance of said resilient means, and a stop opposed tothe first stop.

40. In afront strike writing machine, the combination of rearwardly-striking types, a platen, a platen carriage, a frame or support whereon said platen carriage runs, a hinge device affording a support for said frame, a spring, aI stop against which said frame is held by said spring, said carriage and frame being movable against the resistance of said spring, and said stop being releasablc so as to enable said frame to be lifted to expose the under side of the4 platen, said carriage being shiftable downwardly from said stop, to enable different types to print.

41. In a front strike writing machine, the combination of rearwardly-striking types, a platen, a platen carriage, a frame or support whereon said carriage runs, said frame being hinged to the framework of the machine, a spring lifting said frame, a stop against which said frame is lifted by said spring, said carriage being shiftable` downwardly from said stop, to enable different types to print. said 'frame being also tiltable upwardly when said stop is released, to expose the under side of the carriage. f

42. The combination with rearwardlystriking types in. a typewriting machine, of a. non-travelingearriage-track lframe hinged directly upon the framework of the type-v writer, a spring 'lor supporting said frame, said frame being Asinftable up and down to enable different types to print, and being also liftable to rexpose the under side of the carriage.

33. In a front strike writing machine, the combination of a series of rearwardly-striking types, a platen, a platen carriage, said carriage shiftable up and down to enable different types to print, and also tiltable upwardl y and rearwardly to expose the under side thereof, said carriage having a rack that shifts and tilts therewith, and means cooperating with said rack to control the carriage.

44. In a combination of a series of rearwardly-striking types, a platen, a platen carriage, a frame whereon said carriage runs, a hinge device for supporting said frame in rear of the platen, and shiftable up and down to enable different types to print, and also tiltable upwardly and rearwardly to enable the under side of the carriage' to be exposed; saidcarriage having a rackthat shifts and tilts therewith, and means cooperating with Said rack to control the carriage. Y

45. In combination with rearwardly-striking types, a platen, a carriage for said platen, a frame or support hinged upon the framework of the machine to shift up and front strike writing machine, the i downto enable different types to print, said carriage mounted on said frame and shiftable up and down therewith, and carriagepropelling devices also mounted on said frame.

46. In atypewriting machine having types to strike the front of the platen, the combi'- nation with a main frame, a carriage and a platen, said carriage having a feed rack, of an up and downmovable shift frame for the carriage pivoted to the lmain frame in rear of the platen; the carriage and rack being mounted on said shift frame'to shift therewith.

47. In a front-strike Writing machine, the combination of a series of rearwardly striking types, a platen, a "platen carriage, a frame whereon said carriage runs, said frame being shit'table to enable different types to print, and being tiltable upwardly to enable ,the under side of the carriage to be exposed, andan escapcment mechanism including a part shiftable and tiltable with said carriage to control said carriage in all positions thereof.

48. lThe combination With a platen and types mounted to `strike upon the upper front side thereof1 of a platen carriage, a feed rack for said carriage, a frame or supp n't,'letterfeeding devices including means on said frame to cooperate with said rack;

said frame and carriage being shit'table up! 49. In a front-strike writing machine, the

rombination ot rearwardly-striking types, a, platen, a platen carriage having a feed rack, and a frame or supportwhereon said Carringe runs, said vtrarne being mounted to shift up and down to enable diterent types to print, and said Carriage and rack being mounted on said frame to shift therewith, and feeding devices on said trame to eooperate with said rack.

ln a typewriting; machine in which the types strike rearwardly on the platen, the combination of a platen, a platen earriag'e, a main frame. and a shift-frame or support having,r a pivotal Connection to the main trame to swing' up and down. said shift-trame comprising a traelr whieh entirely supports the carriage and extends at its ends beyond said pivotal Connection at each side ot' the machine, to permit the haelt-engaging portions of the carriage to pass bv said pivotal conneetion at each side of the maehine.

5l. ln a typewriting machine, the combination ot' a platen earriage havin;T a feed raelr. and a traine whereon said Carriage travels in letterfeeding direction. said trame mounted to shiftv up and down, to enable different types to print; said carriage and said raelc shittable together with said frame, and said frame and carriage, together with said raelr, being liftable out of coperative relation with the types.

52. ln a front strike typewriter, the combination ot' a support, a platen earriage thereon, said carriage and support being movable to bring the earriage into and out ot' cooperative relation with the type-bars and bein;y also shittable up and down to enable different types to print, and key-actuated eseapement mechanism includingr a member shiftable to maintain a eoiiperative relation to the platen carriage in all4 positions thereof.

53. ln a trout-strike typewriter, a support, a platen carriage thereon havingl a raelt, said earriage and support beine; movable to brina" the earriage into and out ot eooperative relation with the type-bars, and bein;y also shiftable up and down to enable dillereut types to print, said arriage and rack being tully supported by said support. to shit't therewith, and escapement devices to Cooperate with said raelr and inehidingT a member on said support-,to engage said raelt at all positions to which the support vand carriage are shifted or moved.

54. ln a front-strike typewriter, a earriage support. a platen Carriage thereon having a` raelt, said carriage and support being movable to bring the carriage into and out ot' eo-iwrative relation with the 4type-bars, and beine' also shittable up and down to enable dill'erent types to print, said carriage and rael( beine fully supported by said support to shift therewith, escapement devices to cooperate with said raelr and including` a..

member on said support to engage said rack at all positions to which the support and carriage are shifted or moved, and a oarriage-propelling spring also mounted on said support to shift. therewith.

In a front-strike typewriter, s carriage. support, a platen carriage thereon, said carriage and support being movable to bringr the carriage into and out of coperative relation with the type-bars and being also shittable up and down to enable dillerent types to print, and eseapement devices includingT a member mounted on said support to move therewith, spacing and typebar keys. and movement-transmitting means cooperating with all the keys to operate the eseapement mechanism.

56. ln a front-strike typewriter, a earriagze support, a platen carriage thereon having a rack. said support and Carriage being shit'table up and down to enable difterent types to print, said carriage and rack being wholly supported upon said support to move therewith, an escapeinent member mounted on the earriaL'e support to shift up and down therewith. and a tappet. mounted on the machine frame to stril-:e said escapemeut member and operate the same.

57. In a frontstrike typewriter, a earrian'e support, a platen carriage thereon having a feed raek, said support and earriage bein;r shiftahle up and down to enable different types to print, said Carriage and rack being,T wholly supported on said support to shift therewith, an escapement mem'- ber mounted on the vcarriage support. to shift up and down therewith, and a tappet mounted on the machine 'frame to strike said eseapement member and ope nte the same, said esrapement member movable with said support into and out of position to cooperate with said tappet.

5S. ln a typewriting machine., the oo mbination with a main trame, types and a platen. ot a carriage for said platen, a rack on said earrian'e. a trame on which said carriage runs and which wholly supports the i arriage andv rack. said frame being hinged to said main frame to swing the carriage to carry the platen up and out of coperative relation with the types, and being also shiftable up and down to enable dillerent types to print, a spring to propel the carriage, and devices on said trame cooperatingr with said raelr topermit the carriage to move` for letter feeding'. 59. ln a typewriting machine, the combination with a main frame, types and platen, of a carriage t'or said platen, a rack on said earriagfe. a frame on which said carriage runs and which wholly supports the carriaUe and rat-k, said frame beine; hinged to swing the carriage torarry the platen up and out of cooperative relation with the iis types, and being-also Shiftable upV and'down 4toenable different types to print, a spring 'to propel the carriage,l devices on said frame coperating with said rack' toy permit the carriage toV movefor letter-feeding and keycontrolledA means for operating said feeding devices in the dierent positions to which Said frame and carriage are shifted.

60.l In a typewritlag machine, the combination of a. laterally movable carriage, a shift framepivoted to themain frame and support-ing the carriage, and means having one' part supported by the main frame and another part supported by the shift frame' for controlling the letter feeding movements of the-carriage with the point of engagement between said partssuiciently close to the pivotal axis of the shift frame to permit the effective feeding of the carriage at both shift positions of the'shift frame. n

61In a typewriting machine, the combination with a main frame, types and a platen, of a carriage for said platen, a rack on sgi/l carriage, a support on which said carriage runs and which wholly supports the carriage and rack, vsaidsupport being movable tocarry the carriage and platen up -and out of coperative relation with the types, and being also shiftable up' and down to enable different types to print, and devices mounted'on and movable with said support to eoperate with said rack to control the position of the carriage in all positions thereof.

62. In a typewriter, the combination of a platen, a spring-propelled platen carriage having a rack, and shiftable to upper and lower case positions and also movable bodily into andA out of cooperative relation to the type-bars, escapement devices coperating with said rack and mojable therewith at the described shifting and bodily movements `of the carriage, and key-actuated means to operate said escapement devices during' said tol shifting movements of the carriage, but disconnected therefrom when the carriage is in a position out of coperative relation with the type bars.

63. In a typewriter, the combination of a -platen carriageshiftable to upper and lower case positions, and also movable bodily into and out of coperative relation to the typebars, a letter-feeding rack mounted to accompany the shifting and bodily movements of the carriage, a. dog-carrier shiftable wit-h -the carriage and provided with dogs Which remain in cooperative relation to the rack during the shifting of the carriage, and also during said bodily movement thereof, and key-actuated means adapted to coperate with'the dog-carrier when the carriage is in working position.

64. In a typewriting machine, vthe combination with a mainframe, types and? a platen, of a carriageffjtr ,Said platen, a rackon said carriage, a support on which said carriage runs and which wholly supports the carriage and rack,"said support being movable to carry the carriage and platen up and out of coperative relation with the types, and being also shiftable up and down tol enable different types'to print, a dog-carrier mounted on the support and provided with dogs to engage with the rack, and keyactuated means for engagement with the dog-carrier when the carriage is in coperative relation to the'types.

65. In a typewriting machine, the combinat-ion of a stationary framework, typeb ars, a. frame, a hingeI device whereby said frame is supported on said framework, a platen carriage mounted to travel upon said frame andshiftable therewith to upperv and lower case positions, means upon said frame for controlling the feed of said'oarriage, and means upon the stationary frame for operating the feeding means; said frame being mounted to swing'outof position to coperate with the type-bars.

66. In a typewriter, the combination of a spring-propelled platen carriage movable bodily into and out of coperative relation to the type-bars and also shiftablc to upper and lower case positions, and a carriagefeed controlling train comprising two members, of which one is operable` by the t-ypewriter keys and the other is movable with the platen carriage in the described bodily and shifting movements thereof, said shiftable member of said feed-controlling train being adapted for cooperation with the keyactuated member thereof when the carriage is in 'working position.

67. In a typewriter, the combination of a platen carriage, means to shift the carriage to upper and lower casepositions, saidcarriage being movable into and out of coperativerelation to the type-bars, a rack on the -carriage, a dog carrier coperating with said rack, and key-'actuated means for controlling' said dog carrier, said dog carrier havmg a predetermined relation to the aforesaid key-actuated means for engagement;

therewith and disengagement' therefrom when the carriage is adjusted to its working and abnormal positions respectively.

(58. In a typewriter, vthe combination of a carriage support, a spring-propelled platenk carriage mounted to travel on the carriage support, said carriage and support movable into and out of cooperative relation to the type-bars and also movable to different caseshifting positions, an escapement member for said platencarriage, and key-actuated means for operatingsaid escapement member,A said escapement member being movable with the carriage bed. 'into 'and out of 4position for operation by the key-actuated means.,

,69. ,In a typewriter, the combination of a carriage support, a platen carriage adapted to travel thereon, said carriage support and carriage being movable into and out ot cooperative relation with the type-bars, and also being shittable to di'erent case positions, said carriage having a rack, a dog carrier mounted on the carriage support and provided with dogs to engage the rack, and a rocking key-actuated trame having means for cooperating with the dog carrier.

T0. In a typewriter, the combination of a carriage support, a 'platen carriage adapted to travel thereon, said carriage support and carriage being movable into and out of cooperative relation with the type bars, and also'beingI shiftable to diierent case positions, said carriage having a rack, a dog carrier mounted on the carriage support and provided with dogs to engage the rack, a rocking frame adapted to be operated at all times by the typewriter keys, and a tappet mounted on the frame and cooperating with the dog carrier:

7l. ln front-strike typewriter, a platen carriage having a rack, a dog carrier, a rocking frame, a tappet` in cooperative relation with the dog carrier, means to shift the platen carriage and said trameto upper and lower case positions, said frame being also movable to carry the platen out ot coperative relation to the typebars, key levers, a. universal bar actuated thereby, and bell crank connections between the universal bar and the tappet.

72. ln a typewriter, the combination with type bars, a platen and a carriage, the carriage being movable out ot' the path ot' the type bars and being also shiftable to enable different types to print, of feed mechanism shittable with 'the carriage and cooperating therewith when the type-bars are operated, and including means to control the platen against displacement in letter-feeding direc- 'tion when it is moved out of the path of the type bars.

7 ln a typewriter, the combination of a platen carriage and platen, said platen being shit'table to upper and lower case positions, said platen and carriage movable bodily into and out of cooperative relation to the type bars, and a train ot letter-feed controlling mechanism for said carriage, said letter-feed controlling mechanism comprising bot-h means movable with the platen carriage as the lat-ter is moved, and means upon the framework of the machine to be operated by the typewriter keys, the portion ot said letter-feed controlling mechanism which is movable with said carriage comprising means to control the carriage during such bodily movement thereof. 4

7st. in a typewriter, the combination ot-a and platen shiftable for :er caso let ers, and also bodily movable into and out of cooperative relation to the type bars, a tension mechanism for said carriage, and a letter feed controlling mechanism for said carriage, said letter feed controlling mechanism comprising means upon the framework ot the machine to be operated by the typewriter keys, and also comprising means to hold the platen carriage against movement under the action of the carriage tension devices when said carriage is adjusted to a non-working position.

75. The combination with rearwardly striking types and a platen, of a power driven platen carriage including a feed-rack, a frame whereon said carriage rims, said frame being mounted upon the framework to shift up and down to enable different types to print, said carriage, including said rack, being wholly supported on said frame to shift therewith, and letter-feed controlling mechanismv including a device mounted wholly on said frame to coperate with said rack, and also including an operator therefor acting concomitantly with the types and wholly mounted on the stationary framework of the machine, and also including means to connect said members in a manner to permit the shifting' ot the first member` with the shift trame.

7f3. The combination with rearwardly striking types, a platen, and a two-track 'structure under the platen, of a platen carbination with a platen and types mounted to strike on the front thereof, of a carriage for said platen, a frame supporting said carriage, said carriage and frame movable tota position out of cooperative relation' with 'the types. a spring tending to lift said carriage and trame, key to control the depression of said platen and trame to enable diiferent types to print. and stops to limit the vibration of saidvtranie, said stops comprising one which is movable to release the frame to permit the latter to swing the platen out ot' cooperation with the types.

78. ln a front-strike writing machine, the combination of a series ot rearwardly striking types. a platen, a platen carriage, a f 'ame whereon said carriage rims, said trame mounted to be tilted upwardly and rearwardly to expose the under side of the carriage, vand also shit'table to enable ditferenttypes to print, and adjustable oppochine.

80. In a typewriting machine in which the types strike rearwardly against the platen, the combination of a platen, a platen carriage, a track device upon which said carriage travels, arms extending from said track device, means pivotally supporting said arms to enable the trac-k deviceand carriage to swing up from the machine, and means for shifting the track device'and carriage to enable dierent types to print.

Si. In a typewriting machine in which the types strike rearwardly against the platen, the combination of a platen, a platen carriage, a track device upon which said carriage travels, arms extending from said track device, means pivotally support-ing said arms to enable the track device and carriage to swing-up from vthe macl1ine,.and means for shifting the track device and carriage to enable diii'erent types to print; said track device extending at its ends beyond said arms at -the sides of the machine.

82. In a typewriting` machine in which the types strike rearwardly against the platen, the combination of a platen, a platen carriage, atl-ack device upon which said carriage travels, aims extending from said track device, means pivotally supporting said arms to enable the track device and carriage to swing upfrom the machine,

kto the shitting movements thereof.

means for shifting the track device and carriage to enable different types to print; said track device extending at its ends beyond said arms at the sides of themachine; said carriage having al rack mounted toshift therewith, and carriagefeeding devices mount-ed to coperate with said rack and accommodate the thereof.

83. In a typewriting machine having keys and rearwardly strikin types, the combinationvwith a platen andg a carriage shiftable up and down to enable different types to print, said carriage being also bodily Inov-v able out ofl cooperative relation with `the type bars, of a propelling spring movable with the carriage, means to hold. the carriage against the tension of said spring in all positions to which the carriage is so shifted and moved, and means to enable the keys to produce letter-feeding movements of the carriage.

84. In a visible-writing typewriting machine in which the type-bars swing upwardly and rtarwardly to the platen, the combination oi a main frame, a laterally-movable shifting movements carriage, a shift-frame which entirely sup' ports said carriage and is pi'voted to the mainframe to swin up and down to place the ,pieten in difeient printing posititels, said carriage and shift-frame being constructed to allow the carriage to move on the shiftframe laterally past the pivotal connection of the shift-frame with the main frame, and said carriage having a rack mounted to shift therewithg' and a .carriage-feeding mechanism mounted to cooperate with said rack and'accommodated I BURNHAM o. sTieKNnr.v

VVit-nesses JOHN 0. SEIFERT, FRANKFORT.