US1798150A - Typewriting machine - Google Patents

Description

March 31, 1931.

A. B. ELY ET A1.

TYPEWRITING MACHINE Filed May 20, 1929 2 Sheets-Sheet l Attn/'17,96

March 31, 1931. A. ELY ET Al.

TYPEwRITNG MACHINE Filed May 20, 1929 2 s l'aeets--Sheet` 2 i :TLM

Patented Mar. 31, 1931 UNITED STATES rATENroFFIcE ALONZO IB. ELY AND EDWIN L. HART/ION, OF GROTON, NEV YOK, ASSIGNORS T L. C. SMITH & CORONA TYPEWRITER-S NC., 0F SYRACUSE, NEVI YORK, A CORPORATION OF NEW YORK Application led May 20,

jects are to provide a tabulating means for machines of the last mentioned type consist ing of few parts and operable from a key in the keyboard of the machine, and to provide tabulating means applicable to theY r Corona machine with a minimum of change. Other objects and advantages will appear from' the following description in detail of the preferred embodiment of the invention illustrated in the accompanying drawings, in which:

Fig. 1 is a fragmentary vertical longitudinal sectional view of the machine, many of the parts being omitted to more clearly show the present improvements, the tabulating devices being in 'normal idle condition;

Fig. 2 a. fragmentary perspective view showing the tabulating and associated devices and parts in the same condition asm l Fig. 1;

Fig. 3 a fragmentary plan view ofthe machine looking down perpendicular to the plane of the main flat web of the rearwardly and downwardly tilted carriage bed, part of the carriage being broken away and the tabulating device being shown in normal idle condition; p

Fig. 4 a fragmentary vertical longitudinal sectional view showing the tabulator key fully depressed and the carriage arrested by the tabulating means; and

Fig. 5 a detail view showing the adjustable mounting of the stop bar on its supporting brackets.

The improvements are shown embodied in i a Corona machine of substantially the construction shown in patent to Avery et al.. No. 1.700,828, except that in the present machine the carriage and its bed are of sheet metal construction and the ribbon spools are mounted on the main frame instead of the TYPEWRI'EING- MACI-INE 192e. serial No. scenes.

carriage bed. Only so much of the machine as is necessary to a full understanding of the presentimprovements has been shown and will be described.

yThe sheet metal carriage bed has its bottom plate lying in a rearwardly and downwardly inclined plane and fixed on the upper ends of a pair of raceway members 11 connected by a tie rod 12, these raceway members of the shift frame of the machine (which .comprises said members, tie rod and bed) 'being opposed to a pair of companion station-k ary raceway members 13 secured to the side vwalls of the main frame 14 of the machine,

'and suitable antifriction balls being interposed between the stationary raceway members and shift frame raceway members. Said parts coact to support and guide the sheet metal carriage to shift upwardly and rearwardly in a plane perpendicular to the plane of the flat bottom of the bed when shift key 15 is depressed.

Theshift key lever 16 is pivoted at 17' on a lug 18 pendent from the horizontalV web 19 of kone of a pair of sheet metal brackets 2O secured to the opposite side walls of the lmain frame by screws 21. v A rock shaftQQ, journalled in the mainframe, has a pair of arms 23 carryingpins 24 connected with the shift frame raceway members 11 to 'raise and lower the shift frame, and the forked rear end of the shift key lever embraces'the pin on one ofthese arms to rock the shaft and arms to eleva-te th-e shift frame from the normal Vlower case vposition shown in the drawings to upper case position. The shift key lever is guided inthe key lever guide comb 25 of the machine which is secured to the side walls of the main frame by screws 26. Brackets 2O are formed with Vtype Vrest supporting arms 27 to which the ends ofthe rest 28 for the type bars 29 are secured.

The sheet metal platen carriage 30 has pendent channel raceway anges 31 and 32 embracing the upper'channel portions of raceway flanges 38 and 34 of Jthe carriage bed, suitable antifriction bearings being confined in the raceways and supporting the carriage to' travel transversely of the machine with its bottom part inclined rearward .loose 'dogs 39and 40. coactive alternately with escapement wheel ll xed on shaft'jour.- nalled in said bracket, which shaft has a pinion fr?. fixed on its upper end and meshing with feed rack i3 on the carriage.

The normal position ofv the escapement is shown in Figs. l and 2, and the dog rocker isfada'pte'd'to 'be'roc'ke'd down and' up at the -key strokes to letter feed the carriage under control of the dogs, and also to be gi'venian excessive downwardV movement to theposition vshownin' Fig-.Alto free the carriage from control ofthe escapement, as more fully shown and Vvdescribed insaid' patent.

The release of the carriage is eliected by Va releasing.- bell-cranlr lever se pivoted at 4:5

on arm 36 of "bracket 38, andnormally held *in the inactive position shown in Figs. l and 2 by a spring. 55 connecting the upstanding bell crank arm with a lug 4601i said bracket arm. The yrearwardly extending arm of the bellcrankV has a stop lug l? normally abutting thebottom face' of the transverse main body of bracket 38 and is also formed at its rear end with alateral extension or dog-rockerdepressing lugs't extending across the for wardly extendingstop arm 49 of-"the dog rocker which has a stop lug 50 at -its' forward end also normally abutting thebottcm face .of the mainbody of bracket .38. rThe upstanding arm .of the bell-crank lll extents upward through a clearance opening 5G in the .mainbottom plate of the. carriage bed l0, and its. rearwardly extending arm'lies Vunder the bed and the main body of bracket 38. l I

.Thedog rocker is yieldably held in normal lpositionby its return sp ingl connecting a pendent armV 52 of the'rocker with a pendent lug.-53 on side arm V37' .of escapement bracket 38. The dog rocker is actuated Afor letter-spacing .by Vthe universal bar (not shown) which pushes rearward on pendent armtof the rocker. The machineisprcvided with Va release bail (not shown) pivoted lonthe carriage and coactive'with the notched fupper'end olf the upstanding` beller-ank arm to release the carriagefrem control Vofrthe escapement. Y

So faras above described the parts are all constructed and operate as in the Corona machine as heretofore known. In the machine, as constructed in accordance with vthe vpresent invention, key-.operated means' are provided'fer releasing the carriage and arresting it at predetermined points after Jump movements under pull of the carrlage advancing cable and spring drum. Also the brackets are utilized to support the ribbon spools and their pawl and ratchet driving devices, and one of these brackets (that at the left hand side of the machine) is utilized for attachment of parts of thetabulating mechanism.

The carriage in the particular construction shown is made in two'sect-ions58.andl59 adjustably locked .together by :clamping screws 57 which extend through forefan'd-aft slotsGO in. the main flat plate-like portion of the rear section 59 and are screwed into 'threaded holes in-'the'main flat plate-like portion of the front section58, the bottom ofthe carriage comprising twoy lat overlapped plates clamped togetherby'said' screws.v l"At each end of the carriage is arrangedal group of preferably three of theseclampingscrews ina preferably triangular grouping as shown, the screws `of each .such group Vextending through fore-and-aft extending slots'l in the forward'end of one of ap pair of fore and aft extendingflat sheet metal bars or brackets 62 for supporting a notched tabulator step bar 63. The rear ends of brackets 62 are' bent downward andl abut the rearface of stop bar 63 to support the stopbar (53 in rear ,of flange 34 of the carriage bed in a planebetween the planes ofthe bottoms of the carriage and bed, a pair of clamping screws 64 extending through a pair of horizontal transversel-yex- .tending slots 65 in the downturnedend of each bracket and being screwed into threaded -holes in the stop bar, as more clearly shown in Fie. `5.

'Ihe stop bar is thus very rigidly held .to the carriage, but is adjustable at either or both ends relatively to the carriage fore-and- Vaft of t-he machine and is also longitudinally adjustable transversely ofthe machine for insuring .proper coaction' between the variably settable column stops 66 on the bar and the key-settable counterstop 67 on the shift lframe of the machine. vThe bar'63 and the tabulator or adjustable column stops' are O'f ordinary construction, A theY stops being removable and lockable in any desired notches in the bar, and asfmany of them employed as may be desired'to determine the desired columnarpesitions of arrest of the carriage.

V.The non-traveling counterstop 67 comprises aforeand aft ext-ending sheet metal bar lying'4 loosely -iiatwise on. the upper face of the flat bottomplate of the carriage. bed with its rear-.end extending` through a hori- Zontal slot 68 formed in the rear raceway flange 34l of the bed below theraceway channel of the langg'eand preferablyflush at-its lower edge with the vupper lface ofthe .bed bottom. .The walls of the slotrestrain lateral and up and down movementsof the stop 67.

Said stop. is formed with asnose 69 at its rear end normally forward .of thepath of travel of stops 66 and adapted to be projected into .the path of travelof that portion of each `ing movements, andwith a transverse stop shoulder72 at the forward end of edge portion 71 adapted to abut the front face of raceway flange 34 (as shown in Fig. 4) to limit the extent of rearward projection of the stop with nose 69 in position to be struck by a traveling stop 66. Guide edge-7l coacts with the adjacent end wall of slot 68 to hold the stop 67 against swinging to the left beyond a predetermined position with relation to the carriage bed when struck by a traveling stop, the stop 67 being pivotally held at its forward end by a rivet 7 3 to the slightly upwardly offset inner end of a two-arm sub-lever 74, the main portion of which lies flatwise on the upper face of the carriage bed between the raceways. The upwardly offset inner end of sub-lever 74 is provided at its rear edge with a finger 99 extending transversely of the chine with its free end in frontgof the upstanding arm of escapement releasing bellcrank lever 44, said finger being bendable fore and aft for adjustment to insure proper actuation of the releasing bell-crank by the tabulating mechanism. Sub-lever 74 is pivotally held intermediate its ends to the bed by ashouldered pivot screw 75 and the outer arm of said lever isformed with a pendent llug 76 extending down through a clearance opening 77 in the carriage bed adjacent the left hand side of the machine.

A wire link 78, permanently bendable for purposes of adjust-ment asindicated in the drawings, connects the lower end of said lug 76 on the sub-lever with the upper end of the upwardly and rearwardly extending arm 79 of the'tabulator key lever 80. rlhe key lever arm 79 is pivotally held at its lower end by apivot screw 81 to the slightly inwardly offset lower end portionv82 of the vertical web' of the lefthand bracket 20, which web, as heretofore described, is clamped against theV inner face of the left hand side wall of the main Y frame by screws 21. The mainkey carrying arm of the tabulator key`lever'8() extends forward from arm 79 about mid length ofarm 79 under-the horizontal part 19 of said bracket 2O between the shift key lever and the main frame side wall and has its upstandingkeyl supporting front end guided in a slot 88 in a horizontal part of the guide comb 25.

The tabulator key lever is normally held returned by a return spring 84 connected at its lower end with the main forwardly extending arm of the lever and having its upper end hooked over the transversely extending portion of the angular type-rest supporting arm 27 of the left hand bracket 20. A laterally bent stop lug 85 on the upstanding key-stem portion of key lever 80 abuts the under face of the horizontal portion of vcomb 25 which has the 'key lever guide slot 83 to limit the return'movement of the key lever 80 and parts connected therewith, including stop 67. A laterally bent stop lug 86 on said stem p0rtion is adapted to arrest depression ofthe tabulator key after shoulder 72 on stop 67 strikes flange 34 to` prevent accidental bending of the adjustable wire link 78.

Each of the brackets 2O in the present construction is formed with three arms 87 for supporting a plate y88 to which is attached the cover 89 for one of theV ink-ribbon spools :ff of the machine. AThe spool ismounted 'ef the upper end of the hub 91 of itsvdrivinp: ratchet94 which is journalled on a post 9?. fixed on part 19 of the bracket. y'Ratchet 94 is adapted to be actuated from the universal bar of the'machine kby a pawl, not shown.

The frontsheet metal ycover plate 95 Vof-the machine is held to the comb 25 and bracket arms 27 byscrews 96 andl97, as in the Corona machine, said cover plate having flat end portions 95EL clamped down on .the horizontal portions of arms 27 by screws 97 threaded in Y holes 98 and serving in the present construction to clamp the hooked upper end lof coil spring 84 in place on the left hand one of said bracket arms 27. Y

The operation of the tabulating mechanism is as follows:

p The typist aflixes as many of the -removable and adjustable stops 66 as desired upon thestop bar 63, positioning them in notches in the bar corresponding with the desired column points of arrest of the carriage'. The depression of thel tabulator key rocks sublever 74 through the medium of draw link 78 in a direction'causing finger 99 .ofthe sublever to rock .theupstanding arm of bellV crank lever 44 rearward simultaneously with the oblique rearward and downward movement of counterstop y67 toward the tabulator stop bar 63 by reason of thev pivotal connection of the counterstop with the inner end of the Vsub-lever. The counterstop and es'- capement releasingbell crank lever assume of the. escapement dogs 39 and 40 are below and disengaged from the'escapement wheel, thus freeing the carriage for al continuous running or jump movement which is arrested bythe engagement with the set counter stop 67 of that one of the traveling column stops 66flocated nextto the right of the -:cmmterstcqo at thetime lthe itabulator key twas depressed. UponIrele-ase of the tabulator key, the f'key i actuated p arts return tto normal position und-erV the 1 iniiuence 'of :springs '84,

vrriage may be jumped progressively froincolumn zone tocolumn zone .by vrepeatedJactuation of the tabulator. key.

Link "78'` is disposed, as shown, so Ythat it swings up :and down :about its` pivotal connection--Withthe ta-bulator key lever-in case changing movements zof `the carriage shift frame `an extent which carries itsfrearend between points equal distances abovefandibelow fan oblique, plane yperpendicular f to the pathof` caseshift movement `o-f the shift frameandpassing through the pivotedlpoint ofthe/link on Vkey'lever arm 79,so thatzthe counterstop G7 and releasingvbell-crank la Wi'llrbe actuated-uniformly by the tabulator key inboth Ycase shift positions ofthe platen carriage.

1What vwe claim. .is l. In a typewriting'machine, amainl frame, a shiftzframdfa traveling platen carriage on the vshifty iframe, escapement mechanism on'theshift frame controlling travellof the carriage 'for V@letter spacing, v'key-operated means on the Vmain frame for shifting the shift frame upwardly to change case, atabu- Alator key'lever fulcrumed on'thernain frame adjacent one side of the:machinexandihaving an upst'anding arm vniovablei'forvvardly when its key is depressed, a.subleverpivot yed between` its ends onzthe fshift 1 frameto .swing f about: an 'up and. down extendingaxis 'and extending transversely of themachine,"a fore 'and 4aft 1 extending 'link connecting the outer :arm of isaid 'sub-'lever "with :said upstandingl :arm of thetabulator key lever, a tabulatorstop bar mounted `on the carriage'andextending parallelwith the` path of travel of the carriage at'theV rear of the'shift frame, column stops on said' 'stop bar,fa fore -and raft extending :and ven'dwisely movable counterstop pivotally hel'df at .its forward end to they inner .arm .of said si'1b'-'lever'"with its rear columnstopengaging end'snormally'for- Wardof the path fof'travel of Ltheecolumn stops,l means coactive l' with vsaid ;cou1'iterstop tothe rear of i-tslpivotforiguidiirg' the stop to move endwise intorthe path'oftheV 'column stops'fwhen the key ofthe tabulatorxey lever .war'dmovement of androperable'bytheinner arm of'the subllever.

- 1,2.'In'a2typewriting machine, a main frame,y a shift' frame, 1a lplaten carriage on the Vshiftfranie, a carriage :escape'ment and V-a releasing device' thereforon?.` the: shift' frame,

tabuator stops onfith-e fcarriagekeypper- `.ated:means von' the main fra'rnefforshifting ithe shift lframeA atabulatorfkeyLiever `ion the main frame, a counterstop on 'the shift rframe 'normally out of the 'path of travel of ythe tabulator 'stops/onfthecarriage, aisublever fpivotally supported intermediate 'its ends onfltheV shift `fir-"ame and having one arm for conconi'itantlyi actuating. said escapement releasing i device .i and fsetting ysaid counterstop .in'A the v.path of fthe;tabulatorfstops'! on the carriage,.1 andalink'connecting'the other arm'of theIsub-lever Withtlie' tabulator 'key lever* to uniformly 'move 'Fsaid releasing device anduniformly -set the counterstoplinall case positions `.oflthe shi'ftlframe Vwhen the Vtahulator key. levery isf. actuated 3. -A Itypevvritingi machine :as f 'claimedy in .claim 2, :Whereinfthe "connterstopi is pvctaljly connected at one 'end' to i the sube-lever: 'and passes looseiythroughka 'lguide'fon' theshift i frame between itslpivotfandits'I-oppositeend which is projectible intolthelpath ofthe tabuvlatorstops on the carriage.

l. A typewritmg .machine as claimed uin claim 2, wherein cooperating fabutmentsgare provided fon lthefcounterstop andvz shiftframe for limiting :the .setting Smovement ofthe counter stop.

5. :A -typevvritingilmaohine :as claimed'in claim A 2, wherein; meansv are 'provided enU the main frame: and key. lever for 'limiting the ythrow of the lever ini-both directions, and

means are provided on the co'unterstop fand shift framev for determining thelproj'ected ror if set position ofthecounterstop, andthe ylink connecting thetabulatortkey lleverand sublever. ispermanentlybendable tolvarythe dis'- tance between itse'n'ds.

i 6. In a typewritingfmachine, a sheetfmetal carriage bed having Vupstanding fraceway flanges, af platen carriage *on* the ybed having viia'nges, a `coi'mterstopjslidal: lyextending throu'gh'alr guide; slot linthe "rear bed flange below theilower edge "of vthe rear 'carriage flange` andthe 'path' of the bearings confined between saidflanges,"a leverjpivotally held betweenfits ends to the bottom of the carriage bed 'torock transversely of they bed and having itszinner arm -pivotally `connected vwith V.the forward end ofthe counte'rstop, tabulator-key ioperated means connected with the outerfarmof said -leverf for. rocking the same :to project the rear end ofthe'counterstop intothe pathV of'travel of thetabullator stops 'upon :depression ofuthe tabulator key, escapeinentirniechanism fonl the carriage, and' means operablei'byk saidfsub-lever :concomitantlyffwith the frsetting ofi the icounterstop to release the carriagev from control of the escapement mechanism.

7. A typewriting machine as claimed in claim 6, wherein the counterstop is provided with an abutment portion engageable With the front face of the rear bed flange to arrest setting projection of the stop.

8. In a typewriting machine, a traveling platen carriage, a support therefor, an escapement therefor including a dog rocker, tabulator stops on the carriage, a counterstop on the carriage support, a lever pivoted intermediate its ends on the carriage support and having one arm connected vvith the counterstop for setting said stop in the path of the tabulator stops and retracting the counterstop, key operated means connected with the other arm of said lever for actuating the same, means coactive With the counterstop for determining its set position, and a second lever pivoted on the carriage support having an arm engageable With the dog rocker to rock the same to a position freeing the carriage from control of the escapement and an arm movable by a Contact finger on an arm of the stop setting lever whichV is permanently bendable to vary the action of the stop setting lever on the dog rocker actuating lever.

In testimony whereof We hereunto aiiix our signatures.

ALONZO B. ELY. EDWIN L. HARMON.

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