US847343A - Type-writing machine. - Google Patents

Description

PATENTBD MAR, 19, 1'90?" E. e. um, TYPE WRXTIIJG MACHINE." APPLICATION Hum Jun-Y5} 1904.

-' ASHBETB-EHEET 1.

Zgrns WWW .5. a.

PATENTED MAR. 19, 1907. E. G LATTA. TYPE WRITING MACHINE.

APPLIOATION FILED JULY 5. 19M.

4 SHEETS-SHEET 2.

v Ng lf? Z0 Zfilnes'ses: van 2' 0 W /fiaQW g. a" Va' lzzameya No. M7343.

PATENTED MAR 19, 1907. E. G. LA'TTA. .TYPE WBITING MACHINE.

urmognor 11,111) JULY 6, 1904.

4 BHEBTSa-BHIET 3.

' fiaven/zar Ziiiinames ZLMMD UNITED STATES PATENT. OFFICE; i

smrrr c. LATTA, 0F FRIENDSHIP, NEW YORK, AssIoXoR oF-oiiE-HALF' To HARVEY 1L.l\- IOY ER, O F SYRACUSE, NEW YORK.

TvPE wmTiNG MAC INE To all whom, it may wncern:

, Be it known that I, Emur G. LATTA, a citizen of the United States, residing at Friendshi in. the eountv of Allegany and 'State of hew York, have inventeda'new and useful Improvement in Type-Writing Mation.

This invention relates to typewriting machines of that kind in' which the t -bars are provided with two sets'or cases of type and the platen is normally held .in operative 'relation to one set .of type and is shifted into operative relation to the other set, and

more particularly tovisible {writing machines in which the impressions arerhade at the front side of the platen, where the writing can b seen yithout changing the position of the platen on eai iia ehet While he invention is especiallydesigned fora front-strike machine,

chinehereinafter described, and shown in i greatly the drawings, some partspfi he invention are also applicable to other forms of-ma chines The object's of the invention are to provide a type-writing machine of desirable, inex-, pensive, and practical construction in' which the platen-carriage is wholly. supportedby'ashift-frarne,'no-part of'whieh partakes in the lateral movement of the carriage, to provide a novel carriage shifting and locking mechanisrn by which greaterspeedand certainty of action is attained; to so constructand arrange the carriage-shift-in mechanism that gui es are provided. where y the-operator is aided in findingthe the socalled touch rove typewrit' machines in. the particuars hereinafter pointed out, and set forth in the claims. In the accompanying drawings, consisting .of four sheets, Figure 1 is a longitudinal sectional elevation of a t 'pe-writ-ing machine embodying the invention, showing by full iir iger-keys. by

lines the earriage and shift-frame-in its n'ormal printing position and showing by broken lines thejshifted position oft-he parts, and also indicating by broken lines the central type-bar'in its two. positions and the finger-keys. Fi 2 is an end elevation of the carriage, shi t-frame, and auxiliary feed device detached from the main frame. Fig. 3 is a plan view, partlyin horizontal section system, and to im-" Patented March 19 1eo" 7.

and partly broken away, of theparts shown in Fig. 1, the? platen being omitted to expose the parts beneath the 'same. Fig. 4 is a. front elevation, part1 .in-section thereof, shom'ng by' full'and roken lines the two thumb-lever. Fig. 5 is a transverse sectional elevation in line 5 5,'Fig. 1} showing the carriage-release mechanism; Fig. 6 is a plan view of a modified form'of auxiliary feed-bar'detached. :Fig. 'I is an elevation of one .of the interchangeable-,stop-strips for the auxilia feed, showi another ar' rangementoft e stop PIQjGQtIODS. 'Fig. 8

escapement ,wheel" @andi associated 7 parts. 'Fi'g..'9 is a fragmentary section, on an en? adjacent parts .B represents. I I shifting frarnqwhicii'is hereinafter termed the ishiftrfifame',f,- This frame is ably of rectangn-lar forrn,consisting:

spect ively, andflis pivoted at its rear to the. main frame in rear' of-the' platen-carriage tosw iug vertically; In tlieconstrirct-ion shown the shift-frame is pivoted on bearing-cones end against the underside of:the shift-frame. The latter can be downwardly on its action of said spring, which acts to return-it to the normal position.

E represents the platen, which, as usual, is

journa ed .to'rot-ate on thelaterally nov'able ily lifted off of the carriage.

positions of the shift-lever andright-hand' largedi, scale, [show ng the f.';carriage .-bearing an a 'I *A re'pr'esents th "f'stationa'ry or main frame be of any known or suitablefconstruct-ion;

- m eas pp t g. and

carriage .F and is preferably removably seat- ,ed in open hearings or bearings of'some-other construction enabling the platenfto be read- The carriage is, mounted on. the front portion of and projects; forwardly from the shift-frame on which: it travels laterally transversely across the ma.-

is a detail rearl. elevation .of thecarriage Likeletters'ofireferencereferwlike parts ffer l'OIllf, and tear cross-bars b b connected by end, and intermediate longitudinal bars I) bare-1 c, adjustably secured to the sides "ofthe ts in the ends.

pivots, as hereinafter described, against the end bars. or pieces f, connected by a front cross-rod; f and 'are'ar cross-bar or bearingbar f and is slidably connected to the shift.- frame by a ball-bearing constructed as follows:

.secured tothe upper-front portion of the.

G r'e resents bearing-bar consisting n strip 0 hardened sheet-steel, which is rigidly shift-frame by screws 9 or otherwise and extends from end to'end of this frame. It isof the cross-sectional shape'sho'wn in.Fig. 1, having-initsiront portion a groove go, in

which afront row orset of balls 9 bears, and

is provided at its rear end with a forwardly and upwardly projeetingflange g, which bears on the upper side of a: rear rowor'set ofballsg; The rear cros rb llor bearing-bar f of the carriage is also formed of hardened sheet-steel and is of the cross-sectional shape shown in Fig. 1, having a dQWhwardly-facing oove'g at'its frontiportiomywhich bears ownon and forms the'upperhaltof the race for the front-row of balls, and an upwardly facing groove ,5; at its rear portion, which g lower which preferably consistsofa hailihavbears up against andfor'nis the lower portion of the race for the rear set of balls. The end bars of the shift-frame and carriage are provided'with lips g g,- respectively, which pro-.-

ject toward'each other at the ends ofthe ballraces to reventtlieescape ofthephalls there= from. he'balls are prevented from bunching inthe races by suitable. stops. (Not shown.) The. weightiof the plateffl and carriage causes -the bearing-ban to bear d-own on the frontrow of balls an u on the rear row of balls, which are'thus held-=up=against the flange 9 of the bearing-barG on the shiftframe. The two sets of balls,-which are located in substantially the same horizontal plane, form an antifriction-bearing onwhichthe carriage moves with the minimum friction, andas the weight ofthecarriage always maintains the balls in contact with the bearirig-bar G the carriage requires -no adjnst-- ment tocompcnsate forwear in the bearing." This construction, furthermme, avoidsthe excessive-friction sometimes, caused inbb'carings of thischaracter as usually made by a too-clese adjustment of the parts. The

shift-frame takes no partin the lateral movement of the carriage,' and there is'thereforef less weight of parts to move laterally, and as the carriage is supported by the shift-frame wholly its movement is as free as if it was supported-directly on the main frame and no" The carriage, also shift-fra'ine were ,used.

moves-quicker and a. lighter drivingspring can be employed than would'be necessary if'.

any part'o the shifting deviee rno ved with it or ifthe carriage moved on the main frame in contactwith any partof the shift-frame. v Hrepresents a look secured tothe central frontportion 'of the shift-frame and overhanging a forwardly-projecting lip h on the beaiing-barfiof the carriage to revent the detachment of the latter except w on moved;

to a predeterminedposition. The lip h is notched'near one end-foninstance, the right end, at 71., Figs; 3, 4, and 5-and when this notch-is brought oppositeto theho ok H by,

moving the carriageto the left to its limit the- H parts except to disconnect the carriagefrom .fi yria'ge'can be raised and'detached fromthe slnft-fraine without disturbingfany of the 1ts driving spring-barrel, which-'isino't'shownj, I but a which may be mounted either' onthe i 1 shift-frame, or the main frame.- It can be replaced 'with eqiralj facility. The halls remaininplace on the bearin'g bar whenthe;

in replacing the carriage.

-. the carriage? from, reboundin-gfivhen; it has;

- ca rriagc is removed -andre liire' nqatte'fitiori hf'hiSokjHis not in actual -contacti" with the carriage f and .does not in any'.wiis'e .lfinder; the free -meiea' ment of the 'siime..? It-a'etsonly to prevent been shifted and returned to the T r'rnal' posigtion and froml accidental "detachment mg paralldqidalhris rigidly seciiredbjf screws 'ioiiotherw'i'se toth'e ends'of the'shift-- frame and extending :"downwardand foe, 'wardly beneath the carriage, them"; cons.

locatedbeneatlijthifiloii'er front portion of the. keybiiards represents? ginger-1 5 1 whiclfiare'rigidly 'se curedto the Shift-lever at.

thefront ends of its side arms screws-0 'other nieans biiablingthkeys to be readily detached.- Thesliift-frame'andcarriage are 1 shifted downwardly 'b'y."depressingeitherj of the ii 1ger k eys; j ust, us the i1 carriagcs are shifted; but itwi'll he observed that the keys shiftraincis employed, constructed as .follows: K IQ represent two. hell-crank, levers k, bearing on theeross bar of the shift-lever, and upright arms which project upv abowcthe- :whioh are fulorun ed on pivots. k".-, sccnr0d to 1 the frchtnart'of the na n fram'e, and h-ave laterally-projeeting arms pro vided w th studs spaee-keyli, adjacent-to its cnds and-inpiin'arily held ov'er the space-key." ,Thdupright 'sition to engaged and moved-laterally by 'tli'c thumlis of the operator, lllfihzafl'e ordif1 arms of the lovers are connected by a helical tion shown by full lines in Fig. '4. -M, Fig. 1, represents a detent which is pivoted on a bracket 1 n, removably secured to the frontof 'spring is, by whichthey are held in the osiroof znect'edat theififront ends by, aeross hanl -i tween the same and the'bracket m.

leveriin the drawin s-has an ,arm mfl 'prlo-f their place-against the t limb-levers 3 K are m ved simultaneously, thus divid- ;ing the work of shift 7 both thumbs. 4

I other thumb-lever K, until the detentvene:

v front end of thebracket m by aspring m,

'm on 1" the upright armt 'of the detent and t ;n benea th t e forwardly rejecting arm 0 the detent M, and which in t e norma 'positioh of the lever permits the. detent ,to, engage the shift-lever when thelatter is low- :K K over the ends of the space-bar Ljthe --thumb-levers forming indicators or guides by a single character, the right-hand thumb}?- lever K is moved outwardly, thus depressingthe shift-lever andat the same time, thro'u h the (latent.

the main frame and has an upwardly-projecting'arrn provided with a hook m to engage the cross-bar of the shift-lever when in its lower position and a forwardly-projecting arm which. is normally helddowii on the secured to themain frame for instance bewhen the shift-lever,is depressed to shift the carriage; it's cross-bar engages the inclined face pushes it bag until tlie' bar passes thehook, when' the latter is thrown forward .by its springpverthe cross-bar and K-holds itdown; One of the thumb-levers-the right-hand.

'ered," I use the operators thumbs. rest against e upright arms of the thumb-levers which the hands may always be placed in a known position, thus greatly faeilitatingthe so-called touch system or writing, as they, afl'ord known points from which the operator soon learns the location ofthe finger-keys and to reach them without looking 'forthem} and without removin the thhmbs from I When it is desired to shiftjthe carriage for" its arm m, swinging the detent M out-oft .e path of the cross-bar of the shift-lever to prevent it from c g and holding said shiftlever down. l re erably both thumb-levers the carriage between the shiftedosit-ion'the' shift is made wit the left-hand t umh-lver K, which leaves'the detent M free to engage and hold the. shift lever, or the same may be accomplished by using both thumb-levers K K to niakethe shift and then releasing the right-hand lever K, while holding the shift-lever down by the In case it is desired to lock the carriage in gages thepross-bar of the shift-lever. When it is desired to release the shift-lever, the right-hand thumb-lever K is moved to trip These several movements can be made quickly without changing the posii tion of the thumbs and enable the carriage I i6 5-='stead of:the one K can be made to operate l I to be shifted,locked,and released with greater speedand-ease than heretofore. The thumblevers arg retumed to their normal position their spring k as soon as released and ful- I their-function as guides. For those who so, prefer the left-hand thumb-leverK' inl the locking-detent M, or the locking-detent may be omitted entirely, leaving the thumblevers with their other described advantages. In the least-expensive form of machine both the thumb-leve s and locking-detent M are omitted and the carria e is shfted bvthe finger-keys l, fixed tojthe shift-lever. When to the-underside of the bearing-barfi of the carria e between the .two rows of bearingballs' y the screws 7;, whichfasten the bear- .ing bar to the end ieees of the carriage, or "in-an other suitab e manner.

018 an 'esea ement-shaft which is journaled at its on s in the front and rear crossbars of the shift-frame and-is arranged longie tudinally of said frame beneath the intermediate bar thereof, whichis preferably concaved. The fsheft is provided near. its front end with a gear pinion p which projects through ajslotfin the bear! -bar G of the shiftwfraineTandmeshes wit f the toothed -rack--X"-and rovided iat'it's rear end with an escapement-"wh ste "h' ste "movementof the carthe teeth of; the escapement 'wheel tofho I eel which is controlled br nance: t mes nis' fn' t h nl effect the l latter fromrotation.

The center-(if flie'escapement-wheel and the i pointat whichzthejdog engages the teethof the wheel. areloeated inthe'pivotal axis of the shiftefr'ame, so that the movement of the' wheel on the'holdingrdog ins'hifting the carriage is so small; th

g at i t is not anobjec tion and does. not interfere with the easy proper a'et'ion-ofthe escapement in'either position of Q representsa carriage release; bar which is arranged in rear eithe platen adjacent to and-parallel withthe front bar oi the shiftframe. ,ZThe release-baris connected at opposite-.endsihy upturned portions to arms g on the. rear ends'ot shaftsq"; lOumaled in the end bars of the carriage. and provided at their .front ends, with line-space levers (f. The arrangement and operationofthe. linespace levers and connecting carnage-release bar are fully deserihedin my application'for l nited States Letters Patent,- Serial No.

208,011, filed May 14, 1904.1

R,'. Fig. 3, is a rock-shaft journaled in suitable. hearings in the shift-frame parallel with the escapement-shaft and rovided at its front end with a crank-arm giving a stud 1', situated over the carria e-release bar, and at its rear end with a eran -arm having a stud "-rodf qf the carriage hyhoks of theife'edbar. .The'lat fter'is rovided with -wardpressure on anypert of itsl'ength; but

are raised into line with the fixed stop T, and

by further depressingthe finger bar the rear 4 l'ront stu'dof the releszse sheft R, osci lates platen and eta-tried; by forwardly -pr oject loclzited above v-thejfreer, portion of the" ybq -bovfed' -iitwardlyf es showni ig. 3, ':t-o avoid men-trance with the typebarswhen the stop projections t and'fixedstop T; The

.1 whieh engeges the ilonm' eo .for the esc'epemeiit-wheel. The rook-she R 1s-' held .with itsrear stud out of contact with the .holdingedog p by a spring 1', coiled about the shaft"end'connected-thereto end to the shiftframe. When" either line: s ace lever is rocked to turn the plateh and eed theipaper, :the release-bar is lifted and, engagin the" the latter, so" s to move the holding-dog; if out of engagement-with ,the 'esce'pement wheel and release the ese'apeiiient to permit *the free-movement of the'eerridgef Theenxilfry feed meehg ism .fo'r setti g the carnage to different predet'ermiriedfpositions ifor peragrephing end "reducing 001- resents a feed bar arrangedadjecentio and parallel withthe release-barfinrear of themg arms 's at ends, which areremorahly. hung'to oscillate vertieallypmthe irontoro'ssr" v s nether-wise. Bothe'rms prefereblyiproject rwerdlyirom the eerriag'ejjeiid are corineetedto. e1 finger-j bar .9, whjic'lj isperellel with the egrriggejand fihe arm sv s, 'ofgthe, feed-ber ere prefergblyv zcurvedL-ass own ini'Fi 2, and

the cenfieg iseteither end otlts min. I llhe fed-bai'jshdrrhallj helddmqn in ithe osi-" tionilslioy'rn in gi L lieneath=and outao en-j gegementwitht e .-fr on ti;stud wfsthet'release f shaft Itby s imb spri fi i sl to the earria'ge endbearing against one arm a n u'nberof 'upwerdly-eXten in stop r'o-' jections-tto cooperate with afixefi stop on the shift-frame to infest the? carriage uidifr ferent positions, determined'hy thelocationof-f stop-projections tare preferably formed on of hardenedssteel stop-strip t, which 'is removably seated-fin a-groovein the feed+bar in whiqlr it is; held; from transverse moyen'ient" hy the engagement of pins t, F 1g; 93111 e lon'gitudinul grooved fin: the st p-strip. The stop-strifp'is 'slipped endwise into the groove" in the eedsbar; and isheldfrmh endwise movement 'therein when the feed-her is' ifn normal osition-ihy the'engegement oi its, ends svit the and hers of'theehrriage. The operetionof the auxiliary feed mech enism is as follows: By partially de"ressing the finger-bar s? the stops t on the eed-bar edge ofthe'feed-bar engages the front stud of the release-shaft R'end rocks these-me to release the carriage, as before explained. The carriage-is then-free to move to the left until arrested h the engagement of one of the stop with the fixed stop i pon relepsin 'the finger-bar the feed-her 8 permits the release-shaft to roek'fer' enough to allow the holdingedog p to swing into .position to intereeptthe eseapement-whcel before the stop onthe feed-liar is freefrom -the" fixed stop and upon the complete return eithefeed-ber' the carriage 1s egain-controlled by the regular step-by-step escape: merit; Thestop projections are situated at -t en lettenspeee mtervalspn thestop-strip or 'at otheridesired intervels; such esto arrest the carriege at the-desired points, and the first stop projection-is-.preferably so located 7 I a'stofistop the carriage in correct position for starting it pnragra h.--Int'erchangeable stop stiips provided with"diii'erently-spaced .stop proi'ections are provided, sowhatby plneing 't ie proper strip on the feed-bar-the -carriage .oa'n bestop edj'at" various desired points,.thusfgreetly ucilituting the production of d'll'erent kinds of eolnmn or ta belated work. .A:;-stops"ti ip"t with at different ar-- rengement of-sto "pr'qjeetions is shown in- Fig.' 7,* The fixe stop .T is also preferably adjustable mi the shift-fra1ne, for which urteeth at on the front'herof the shift-frameh 4i holding-sereiy 'or other releasable seeuring device-ail Bv edjustingthe lined stop.'l

alongt'he'slii fi frame the pnragraphing-stpp maybe-caused meet at any des1red pointr t 9 pose,1n the=construction shown t oonsis s of 9. block has'ung tee-then rtsrearfaegwhrch Y r I v f I l u a are held inengagement with cooperating iti'on oi the oohnnn-sto s in the line. The i as it moqes laterally' withtthe, carr age the .uperat ing pljssurel' will ordinarily be applied do that phrtwliieh happens to he opposite the ,centrelpert of theke v oard. Anim ortant edvontage tif this.(bQllSll'UCliOl'ljlS hat the operiitors'fin ger follows the movement of the finger-her \vitlrthmgarriage and acts as a Brake tijprev'ent, tomgrentextent, the shocks,

's tra ins, and-"wear, which would be reused by the fabrnpt-lsuzpping of the irrmge after l r I moving along stance.

Fig. 6 shows a modified form of-feegl-bar S for the aux liary feed mechanism, in v'vhieh the linger-liar is omitted. and one of its arms terminates in, an operat ng-lever S. This bar is interehangenile with the feed-bar S,-

liefo rei described. -It' is lighter and less ex The auxiliary feed device requires but litsi tlefforce tQoperete it and can be. operated r pensive-hut lacks the advantages of-the fin-' v ger-har. i e tBv-first reniovmg the platen from the carwithout shifting the carria e, if desired but bythe'applica'tion of more orce to the irlger-v pivotal axis of-the shift-frame, snhstan'tia lly verticallw; and 'a' carri eapement' having one part supported bar it serves the double function of shifting the carria e 'and'af-the same time moving the carriage laterally an'irre lar distanceto a desired position. 'This action of the'fin gerbar 15 due to the fact that it becomes rigid with the carriage and the shift-frame'whenit'. hasheeh forced down fa'ren'ou ht'ehestcpped by the engagement of the fetf-barfi with the;

stud on'the release-shaft R after having re-xleased the carriage'froin its escapement. By the application of a little-more, pressure on the fingcr-bar it overcomes the tension of the. carriage-shift spring'D and serves to shift the carriage. This man adVantage-in'para graph ng, as a capital letter oruppe r-case character is usually re uired to start the park agraph, and this doubl e iunction o f the feedbar saves one motion. When the'earria e is locked in shifted position and is thus held from vertical movement; the' 'operation of the auxiliary feedde'vic'e has no effect on the carriage shift. F-

.' I elairnas my inventioi 1- 1. 'InJa front-strike type-writin'g' in in which. the type striketlie front platen, the comhiniationhf a laterall able carriage, hie-frame \''hi the carriage andisipitoted in rear of the earrlageflto hif t'l ran ed in part on the shit? on the 1nainframewithtlie ope tion hetwee i'said'part libs pivotal axis of the'flshift as set forth. 5 'ff H 2. In atype-writing maehin he eo'mh nation of ala'terally-movable' carriage,'",a*' .hiftirame pivoted to; the.i'miitiiflia'lliejtlid' f s1; pporting the -'carriage", and f a "aarriage esmain frame and another part su p tedjby t-he shift-frame, with the working" join'tqbe tween saidtparts' ofthe eseapem'ent 'on'the asset forth. H I 3. In a front-striketype writingmachme in which the type Strike the front side ofthe platen. the combination with mainframe, f and a laterall novahle.earriageand laten,

of a vertieally-movahle shift-frame or the carriage pivoted to' the main frame inrear of i the platen. the pivotal axis being on,a horizontal olammidway between thetupper and lower m'lilOIiS ofthe axis of the platen. substamially as set forth.

4. In a visible-writing type-writing mar -chine in which the t \'pe-bars' swing upwardly and rearwardly to the platen, the combination of a main frame, a laterally-movable platenearriage, and a shift-frarne which en- 5 tirely supports the carriage and is ivoted to I the main frame to swing up an down to place the platen in different printing positions, said shift-frame being connected to the -mam frame-by separated pivpts located in rear of the platen and parallel therewith. substantiallyasset forth. i I

In .a visible-writing type-writing inaehlne in whir-htl'ie t pe-hars'swiug upwardlv and rearwarr lly to the platen, the combinat onfof a main franieia latrallyrl'iiovahle earriilgez-suppor-ting the platen', a carriage-shift frame .whieh entirely supports the Carriage ani$piwited to the mainframe in r ar of the platen and has-an arm rigid tlierewith projecting; forwardly under the carriage, and a (lev icein front of the carriage [of operatin; said-arm to swing said shift-frame. substantially assetfortli.

6 Inf'a ,visihlevwriting t \'p --\\'ritin;: machine in which thetype-hiirsswing upwardlv and rearwardl)" to'tiu-phiten. tlzi-comhiini- -tion of .u' inain framea laterallv-lnovnhle laten supPortingrnrriage. and :1 shift-trunn- \\'h ieh;is"o sul istantially the same length as the; -a nd entirelysupport; said earpit'oted'to the"main frame to down to plaee tl e platen in difeonstrii'etedgto allow the terallvon the shift-frame lstantially as set vriting{type-writing inah pediars swing upwardly e.- platen, ithe combinan frame, ii laterallyn'iovahle ing earriage, and a shift-frame aid carriage and is u in rear of the carving. p' and "down toplace the platen; ng-(l ifi: ntlprint ing-- ositions. said ea rr iitge being o t ahlelatiqral y on-the shift- "framefi front "of"tl1'e. pit-fqm1 connection hetweenthefshii'fifra" and-themain frame, ndsaid gshiftfrani v 'st'i'ue'td' to "allow the ':arriage to fnove laterally hvonrlithe ends of said shift-frame,

{substantially as setforthl r 8. In a i'isihle writing type-writing machin e in which the type-bars swing upwardly and rearwardly tothe platen,the comhmation of a' main frame, .a laterally-movable arid Carriage bein con- 1 carriage and earriage,a and a shift-frame which is of sub- I stanti'allj'ithe same length as the carriage and entirelysupp orts' said marriage and is piv oted to the main'frame substantially in the horizontal plane of the axis of the-platen to swing up and down to place the platen, indifferent printing positions, said carriage and shift-frame being construe-ted to allowlthe carriage to inove on the shift-framelateraIly past the pivotal connection of the shift frame with the main frame, substantially as set forth. 9. In a type-writing machine in which the -bars swing upwardly and rearwardly to t l thg platen; th eoinbination of a laterallyrear portion to the main frame to. swing up I and-down, and a track which entireiy, su

. ports thecarriage" an(l is located wholly m front of said pivotal connection, substantially as 'setforth. I

11. In a type-writing machine inwhich the type-bars swing upwardly andrearwardly to the platen, the combination of a laterallymovable platen-carriage, a main ffraine a rigid rectangular shift-frame having a supporting-track for the carriage, along'iits front,

and a pair of separate independently-adjustable plvvts connecting the rear ofthe ,shif t frame'to the mainframe, substantially as set forth.

12. In a type writing machine, the con bi= nation with the keyboard, the .t-ypeebau-s, a.

I platenffand a s acekeyfoi: baryofa device which is locate the front, central portion of the keyboardjahd ,proj ects upwardly above the space-bar ahd. is' 'normally heldxstation y ary to form a thumb rest or guidefbutwhich. s movable sidewise of the machine, :and

means operated by the, sidewise, movement of said device for chan ng the print' rela tion of the platen ,an type-bars, -'su Stan-- tially asset forth.

13. nation of the ty'pe hars, a platema keyboard, a s ace bar or ey' I key 'ard, pivoted-'thumhalq tsorguides ad'- jacent to and independent ofthes pace-key on oppositesides of andnear'the frent center of t e keyboard, and meanswo ated by said thumb-guides forchan 'ng t e printing rela-;

type-bars, substan -v.

tion of the I platen an tiallya sset'forth'; i =15" 14.- In a tlzperwritin machine, the combination of a eyboard aspacebar onkeyin the front partbfthe keyboard, pivoted upright thumb-guides adjacent to said,s pace 1 bar on, key and independent thereof, 1 and means independent of thes ace bar'or'key operated by saidthumb-gui es for-actuating .5.

pe-bars swing upwardly and rear'wardly to he platen, the combination of a laterally-' in the front part of the ti'ally as set forth. Y 15.. In a' type-writing machine, the combiand a; space key or bar,-of a thumb-rest arranged'adjacent to the space-key and movable sidewlse of the machine, and mechanism operated by said-thumb-rest to cha e the printing relation of the type-bars and p aten, 'substantially'as'set forth. Y

anAperati ve part ofthe machine, substan- "6o nation withtype-bars, a platen,'a keyboard, I

' v 16.'.In a type-writing machine, the combination with givoted tvpebars, a platen,'-a gkeyboard, an a space hey or bar, of a pair of opposahle thumb-rests arranged at the front or the keyboard and movable in opposite directions, and mechanism by which the print ing relation of the 'type bars andplatenis 1 i changed by-thc movement of either or both o1'-.sard-thumb-rests, substantially as set forth, I 17. Ina type-writing machine, the combination with a shiftable carriage, and a keyboard, ofa lever having an upright arm-are ranged at the front portion of the keyboard' and forming a thumb restor guide, said arm being'moveble sidewise of the machine, and ,meehanisnr operated by said lever for shiftingthe carriage,- substantially as set forth:

' 18. In a type-writing machine, the combihatiorrwith a shiitable carria e, andan autb'- 1 Imatic detent for holding! t e carriage shifted position,:0f a pair of levers havingup wardly-extending. laterally-movable arms'loboard, and means contro ed 'by said-levers" and operating to shift the carriage and pre-'.

ventaction of the detent when said levers j are moved-in concert and to shift the carlever is're easedxprior to the other,subs'tan-" tially as set forth."

- '19. In a type-writing machine, the c0Inbi'-;.

nation with a shiitable carriage, and an auto? -matic detent f0r"holding the carriage in roo shifted position, of a pair of levers having up;

wardly-extending laterally-movable arms 10'- cated at the front central portionof' the key-' board, means actuated by both ofsaidlevers for'shifting the carriage, and ineans actuated by one'of said levers for controlling the adtion of said detent,substantially as set forth. j

- .Witness myhand this 25th day of June, 1904.

H. L. BLos son,

I I I I I l, A. cated at theefront central ortion of the-keyriage and ermit the detent'to act,when;-one

Images