US966954A - Type-writing machine. - Google Patents

Description

vJ. T. SGHAAFI'. TYPE WRITING MACHINE. APPLIUATIGH FILED un ze, 1909.

Patented Aug. 9, 1910.

2 SHEETS-SHBET 41.

' INVENTUR /SZYKN JJM www@ HIEATTUFQNEY J. T. SGHAAPP. TYPE WRITING MACHINE.

APPLIUATION FILED HAY 29, 1909.

Patenna Aug'. 9,1910'.

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H15 ATTURNEY 1 JOHN `T; SCHAFF, 0F WSHING-TON, DlSTRICATO COLMBIA, ASSIGOR T0 'UNION TYPEWRITER COMPANY,v OF JERSEY CITY, NEW 'IERSHLY,4 A. CORPORATION OF NEW JERSEY. 4

esagera.

To (11211071.0711. 'it may concern: f

Be it known that l, JOHN T. SCHAAFF, citizen of the United States, and resident of Vlashington, in the District of Columbia,

have invented certain new and useful Improve-ments' in Type-Writing Machines,A of ,which the following' is a specification.

My invention 4relates to typewriting may ehines and more particularly to type actions. TheI main object of my rinvention is tov provide comparatively simple and etiicient' type actions which afford a case shifting .movement of the type basket.

To the above and other ends 'which will hereinafter appear, my invention consists in the features ot construction, arrangements .ofparts and combinationsof devices to be hereinafter' described .and particularly pointed out in the appended claims.`

In the accompanying drawings. wherein like reference characters indicate corre spending parts in the various views, Figure l is a vertical central front to rear sectional 'view of'one form of typewriting machine embodying my invention, a sutficient number of parts of the machine being shown to illustrate my invention in its embodiment therein. Fig. 2 is avertical transverse sectional view of the same taken on the line .a-a: of Fig. 1 and looking inthe direction 'of the arrow at said line. s

The frame ot the machine comprises a base a, corner posts b and a top plate c.

Key levers 1 of the second order are fulcrumed in the base a of the machine on a pivot rod 2 and are provided with nger keys 3 in different banks as indicated in Fig. 1 so that the key levers are of different lengths. Each key lever has an upwardly extending ear 4 with a' laterally projecting pin 5 thereon which is received in a substantially horizontal slot 6 formed in an angular sub-lever 7 having a substantially horizontally disposed arm 8 and -a substantially vertically disposed arm9.. The sublevers 7 are all fulcrumed 'on a pivot rod 10 .secured at its ends to the base a of the machine. The upper ends of -the arms' 9- of the angular sub-.levers are extended rearwardly at 11 where they are provided with laterally projecting `pins 12 received in vertically disupright sulnlevers 14. arel levers of the Specification of Letters Patent.

`wardly against the front .diagrannmatically shown TYPE-WRITING MAGHINE.

lower ends on a rearwardly at 20 where it is provided with a.V

laterally extending pin 21 received in an in-V clined slot 22 in the heel of the associated type bar `23. ,The type bars are'segmenta'lly arranged and work in .slots 24. in the type bar segment and strike ul wardlyand rearaee of .a platen 25, in Fig'. 1, it being understood that the plat-envie carried by a suitable carriage (not shown) which travels from side to :side ydii the machine above the top plate 0. The nrward ends of the type bars are supported M.on a pad 27 which in turn is supported by a segmental stripp28 secured :to the forward ends of forwardly projectingr arms 29`secured at their rear ends by screws 30 to the type bar segment. The type bar segment is pivoted .at 31 on two set-s of parallel links 32 connected to rock shafts 33 mounted to turn in open-ings in bracketssecured to and depending from the top plate c of the machine. One of these brackets and a pairl of associated parallel links 32 are situated near Jeach side of the machine and connect with the type bar segment a-t 'one side thereof. Each bracket 34 s provided with forwardly projecting lugs 35 vtapped to receive oppo'sl-tely disposed screw stops 3G with which the uppermost of the pair 'of associated parallel links coperateto limit the case shifting movements of the lirks i and the segment to which. they are connected. The lower-most of thele't-hand set of parallel links 32 is extended and rearwardly beyond its shaft 33 to form an arm 37 to which a depending link 38 is connected, the lower eI-ldo'f the link 38 being.

connectedto aV shift key lever 39 having a shiftkey 39a. lt should ,be understood that the means for effecting the case shift movepivot rod 15 `and work in slots 16 1n a supporting piece 17 connected outwardly rareaeea aeg. a, iam. Application filed May 29, 1909. Serial No. 499,328. i I y ayv ment of the type bar segment may be varied at will, a conventionalform only of the case shifting means being showin p From a comparison of Figs. l and 2-ift will be\ observed that the upright sub-levers 14: vary\in length and project at increasing 'v heights from posed slots 13 of uptight sub-levers 14. `The the center to the sides eff the System in order to make connection with the segmentally arran ed type bars. Moreover, it will he observe that those sub-levers 14v vwhich are situated near the sides of the system are off-set or bent laterally and inwardly at the up er ends thereof as indicated at 14u in order to compensate for the difference in width between the keyboard and thelsystem of type bars. It will also be seenA that the upright arms 9 of the s stem Vof angularsub-levers all extend to t e same height and make connection with the sublevers 14 at a uniform distance from the fulcrum of the latter, and that the effective lever arms 9 are parallel with the sub-levers 14 up to the points where connection is made between the sub-levers 7 and 14. Furthermore, it' will be seen that the horizontally disposed arms 8 of the angular levers project varyin distances from the fulcruinlO of the vsubevers 7 and from the fulcruin 2 ofr the key levers so that the points 5-6 of connection between the angular levers and the key levers are at varying distances from the fulcrum of the key levers and at varying distances from the fulcrum of the angular levers. This manner of connecting the )arts is such that compensation is provide 4for the variation in leverageA due to the variation in lengt-h of the sub-levers 14 and for the variation in length of the key, levers 1.

It will be seen that the pin and slot connections 12|-13 between the sub-levers 7 and 14 afford ya case shifting 'movement of the segment to change the case position of the types, the sub--levers 14 at this time being moved with the type bar segment, whereas the sub-levers 7 and keypleversare carried by the' frame of the machine and'remain fixed.' Moreover, .it will be understood that the construction; affords an acceleration of each type bar in its movement toward the printing position, the initial portion of the stroke being under a low leverage which affords an easy and soft touch uponv the keys. In the construction as shown the acceleration in the movement vof the bar does not occur throughout the entire stroke but does occur throughout a. considerable portion thereof and the touch is comparatively light at the beginning of the stroke.

From the foregoing description it will be understood that I provide a simple and eficient type action in which the relative case shiftingmovement may be effected between the actuating lparts'of the type action and wherein there is a compensation effected to provide a substantially uniform leverage of the different type actions throughout the system and toprovide a uniform dip of the ke s throughout the system.

ilarious changes may be made without departing from vention.`

What I claim as new and desire to secure by Letters Patent, is zthe spirit and scope of my inl. In a front-strike tylpiewritiiig machine,

the Combination f a Shiaabie type im Segment, a type bar carried thereby, aA key lever,

a sub-lever shiftable with said segment and operatively connected with the t e bar, a second sub-lever controlled bysaidyiiey lever, and means for operatively connecting said sub-levers to afford a relative shifting movement between them when the type bar segment is shifted.

2. In a front-strike typewriting machine,

the combination of a shiftable type bar seg-l ment, a type bar carried thereby, a key lever, an upright sub-lever shiftable with said Segment and operatively connected with the type bar, a second sub-lever which isin the form of an angular -lever and is controlled by said key lever, and means for operatively connecting said sub-levers to afford a relative shifting movement between'them when the type bar segment is shifted.

3. In a front-strike ty ewriting machine, the combination of a shiftable type bar segme1it,atype bar carried thereby, a key lever, a sub-lever shiftable with said segment and operatively connected with said ty e bar, and a. second sub-lever controlled y said key lever and connected by a pin and slot connection with said first mentioned sublever to afford a relative shifting movement between the sub-levers when the type bar segment is shifted.

4. In a front-strike -tyewriting machine, the combination of a shi table type bar segment, a type bar carried thereby, a key lever, an upright sub-lever sliiftable with said se ment and operatively connected with said type bar, and an angular sub-lever connected by a pin and slot connection with said key lever and connected by a pin and slot conn'tlctioii with said upright sub-lever to afford a relative shifting movement between the sub-levers when the type bar segment is shifted.

In a front-strike typewriting machine, the combination of a shiftable ty e bar segment. an upwardly and rearwar ly striking type bar carried thereby, a key lever of the second order, aii upright sub-lever of the third order pivoted on and shiftable with said segment and operatively connected with said type bar and an angular sub-lever pivoted on a fixed portion-of the machine and connected b v a nin and slot connection with said key lever and connected b v a pin and slot `connection with said uprightsub-lever to afford a relative shifting movement between tlie sub-levers when the type bar segment is shifted.

G. Iii a front-strike typewriting machine, the combination of a series of upwardly and rearwardly striking typebars; a series of key levers; and intermediate operative connections between -said key levers and type bars, said connections comprising a series of sub-levers that vary in length, and a` second.'

system.

All]

7. lin a iirvontstrike typewriting machine, the combination of a series of upwardly and rearwardly striking type bars; a shift-able type bar segmenten which said type bars are mounted; fa series of key levers; and a series of intermediate operative connections between said key levers and type bars, said connections comprising a series of sub-levers that vary in length, said sub-levers bein' carried by thetype bar segment, a secon series of sub-levers, oneset of the -arms of which are of -a uniform length and the other set of the arms of which vary in length to provide 'a uniform leverage throughout the system, the operative connection between said sub-levers adording a relative shifting movementbetween them when the type bar segment is shifted. i

8. ln a front-strike,typewritingvmachine, the combination of a series of `key l-evers; a series of upwardly and rearwardlystrking type bars; anda series. of intermedi-ate op erative connections between said key levers and type-bars, said connections comprising a series of sub-levers projecting varying dis, `tantes from their fulcrums, and a second series of sub-levers operatively connected with said tirst mentioned sub-levers at a uniform distance from the fulcrums of vthe lirst mentioned series of sub-levers and opi erativel'y connected to said key levers at varying distances fromthe ful-crums ofthe key levers.

9. lny al rontstrike typewriting machine, the combination of a series of key levers; -a series of upwardly and rearwardly striking type bars; a shiftable type bar segment on which the type bars are mounted; and intermediate operative connections between the key levers and type bars,'said connections comprising a series of sub-levers projecting varying distances from their fulcrums `and carried by said shiftable type bar segment, a second series of sub-levers operatively connected With'said first mentioned sub-levers ata uniform distance from the fulcrums .of said first mentioned sub-levers, and operatively connected to said key levers at varying distances from the fulcrums of said key levers, the o erative connection between the. two series o "sub-levers allerdings. relative shifting movement `between said two series of sub-levers when the type bar segment is shifted.

y l0. ln a front-strike typewriting machine, the combination of a shiftable type bar segment,='an` upwardly and rearwardly striking iypel'iiinfcarried thereby., 'a kev lever ot' the second order, an upright -subslever of third order pivoted' 'onV and shiftable Wit said segment and' operatively connected with the type bar, an anular suo'l'ever-pivoted Y'on a fixed portion or the machine and con- `trolledby said 'key lever, and means for operatively connecting said sub-levers to alord f va relative shifting movement between them when ille type bar segment is shifted.

l1. In a front-strike typewriting machine, the 'combination of a series of lupwardly and rearwardly striking type bars; a series 'of` key levers that vary in length; Vand intermediate operative connections between said the combination of a series of upwardly and rearwardly striking type bars; a series of key levers that vary in length; and intermediate operative connections between said key levers and type bars, said connections comprising a series of sub-levers that vary in length, and a second series offangular lsubdevers having substantially horizontally disposed arms operatively connectedfs.Y to the key levers, and substantially vertically disposed armsoperatively connected to the first mentioned series of sub-levers, tl'fsnbstantially vertically disposed arms of the angular levers being of' uniform length and the substantially horizontally disposed arms varying in len th'according to the variation in length of t 1e rst mentioned series of sub-levers and according to the variation in length of the key levers.

13, In a front-strike typewriting machine, the combination of a series of upwardly and rearwardly striking type bars, a shiftable type bar segmentenwhich said type bars are mounted., a series of sublevers that vary in length and which are operatively connected with the type bars and shiftable with the type bar segment, aseries of key levers that vary in length, a second series of sub-leversl operatively connected to the key 'levers and.

to the lirst mentioned series of sub-levers, one set of the arms of the second series of sub levers lbeing of uniform length and the other set of arms varying in length accordingito the variation in length ot the first mentioned series of sub-levers and accordingto the vari ation in length of the'key levers, and means for affording a relative shifting movement between said series of sub-levers when the type bar segment is shifted.

carried by said Segment and connectedY 14;.A In a front-strike ty'pewriting machine,"

the combination o f a Series of upwardly and rearwardly swinging type bars, a shiftable segment on which said type bars are-mounted, a series of sub-,levers carried'by said'segment and connected directly to the-type barsl by pin and slotconnections, a second series of sub-levers connected to said first mentioned.

sub-levers by pin land slot connections which afford relative shifting movements between the two series of sublevers when the segment is shifted, and key levers to whichsaid .second series of sub-levers are connected.

l5. In'a front-strike typewriting machine, the combination of a series of upwardly and rearwardly swinging type bars, a shiftable segment on which said type bars are mounted, a series of sub-levers of the third order `carried by said segment and connected directly tofthe type b'ars by pin and slot con-- nections, a second series ofangular sub-le- Y.vers connected to said first mentioned sublevers by pin and slot connections which afford relative movements between the two series of sub-levers when the segment is shifted, and key levers to which the second series of sub-levers is .connected by pin and slot connections.

lt). In' a front-strike typewriting machine, the combination of upwardly and rearwardly swinging type bars, a shift-able segment on which said type bars are mounted, a series of sub-levers of the third order directly to the type bars by pin and slot connections, 'lsaid sub-levers etending different distances from their lfulc'rums, a second series'of angular sub-levers having upright arms operatively connected tosaid first mentioned sub-levers to afford relative movements between the two series of sub-l levers whenthe segment is shifted, the upright arms of. the angular sub-levers extending a uniform distance from the fulcrums of said angular' sub-levers, and key levers to which the other substantially horizontally disposed arms of'said angular sublevers are connected at varying distances from the fulcrumsvof said angular sublevers.

17. In a front-strike ty'pewriting maslot connections, to afford 'relative move- .ments lbetween the two series of sub-levers when the segment is shifted, said upright arms of the angular sub-levers extending a uniform distance from the -fulcrums of'said angular' sub-levers, and key levers to which the other substantially horizontally disposed a series of upright sub-levers and a series of separately fulcrumed angular sub-levers intermediate the key levers and the upright sub-levers, the angular levers being operatively connected with the upright sub-levers and having one se't of their arms substantially parallel with the key levers and having the other set of their arms substantially parallel with the upright sub-levers up to the points of operative connection between 'the angular and upright sub-levers.

lf). In a front-strike typewriting machine, the combination of a series of up- \'ardly and rearwardly striking type bars; a type bar segment shiftable to change the case position of the types; a series of key levers; and operative connections between said key levers and type bars, said connections comprising a rseries of upright sublevers s hiftable with said segnil at, a series of angular sub-levers intermediate the key levers and said upright sub-levers, `the angular sub-levers having one set of their arms substantially parallel with the key levers and having the other set of their arms substantially parallel with the upright sublevers up to the points of operative connec-4 tion between the angular and upright sublevcrs, and means for operatively connecting the two series of sub-levers to afford a relative .shifting movement between them when the type bar segment receives a case shifting movement.

20. ln a front-strike typewriting machine` the combination of a series of upwardly and rearwardly striking type bars, a type bar segmentshiftable to change the ease position of the types, a series of upright sub-levers sliiftableI with said segment, pin and slot connections between said type bars and sub-levers, a series of key levers, a series of angularsub-levers ii'ltermediate the key levers and said upright sub-levers, the angular' levers having one set of their arms substantially parallel with and connected to the key levers by pin and slot connections and having the other set of their armsl substantially parallel with the @www upright sub-1eve1s, and pin and slotoonne 'tions between the two series of sub-levers to aolrd a relative ease shifting movement between .them When the type bar segment is shifted. A

Signed at the' borough of Manhattan, ety

` of New York, in the county of New York and Stem of New Yo1k this 28th clay of l0 `May D. 1909.'

JUHN T. SCHAAFF.

VVt-nesses GHARLEe E. SMITH,

l B." DEEVEB.

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