US874338A

US874338A - Type-writing machine.

Info

Publication number: US874338A
Application number: US39070307A
Authority: US
Inventors: Edward B Hess
Original assignee: Royal Typewriter Co Inc
Current assignee: Royal Typewriter Co Inc
Priority date: 1907-08-30
Filing date: 1907-08-30
Publication date: 1907-12-17
Anticipated expiration: 1924-12-17

Description

NO. l874,338'.

' PATENTl- D DEC. l?, 190.7.

f E. B. HEss. TYPE' WRITING MACHlNE.

APPLIQATION FILED AUG. so," 19o?.

y W/T/VESSES:

, BPA,

narran sri-tiras Parana esta@ a `inwAnD n nnss, or Naw Youn, ii", Y., Assreivon TO HOYA-L TYPEWR i'll-li COMPANY, OF

i nononnn, naw Jnnsnr, A coRPo'BliTlon or NEW Jnnsicv.

y TYPE-WRITING MACmNE.

.T0 all whom it may concern: n

Be it lmown that I, EDWARD B. Hass, a citizenrof the United States of America, lresiding in the borough of Brooklyn, city and Statevof ENew York., have kinvented certain Improvements in 'lypeVriting Machines,

ofv which thefollowing is a specification.

This invention relates to improvements in ribbon mechanism, of a visible writing niachine and comprises an improved means whereby a variable throw may be imparted to the ribbon vibrator to carry different zones of the ribbon to the printing voint.

The invention is particular y designed foruse with a ribbon having plural Zones of unlike character or color from either of which, at the will of the operator, printing may he effected. y'

The primary feature of this invention consists in the employment of a device which it is thought ,may be accurately describedv as a link interposed lbetween'" the ribbon vibrator and lthe universal bar and 'having surfaces or stops of different elevation with either of which, at will, one or the other of said parts may engage to effect movement of the ribbon vibrator through different distances. v The universal bar may have a uniform depth of. depression and-'consequently when the effective length of the link is shortest it isinoved through a greater distance by the universal bar than when it is longer and there vis also some lost motion daring some part ofthe downward traverse of the' universal barwhen it docs not. carry "the link with 'it'. More :specifically stated., this device which l have referred `to,r as a link maybe in the `forni offa .plate rocking about an ,axis and so yd isposed with refer-. ence to the universal bar that by rocking the plate about its aiiiseither one of several` sur faces may be brought into line lto Ihe operated upon by the universal har when depressed. Such ksurfaces are at different distances from its Acenter of motion aboutA which the link rocks. yThe llink is so operatively interposed. between `the universal barV and the ribbon vibratori actuatiiigfdevices that when the 1 sin'face,I nearest the axis ofthe link'l is brought into operationen depression of the universal.

bar to-throw the ribbon vibrator to the printing point, thefeffective length of the link is short and a'niaxnnum range of movement 1s Specification of LettersPatent. v

Application ned August 30.1907. serai No. 390,703.

Patented Dec. 17, 190.72,

imparted to the ribbon vibrator. "When a surface at greater distance from the axis is brought into operation the link is in e'ect longer andthere is some lost motion on deressionof the universal bar before. said surface engaged and therefore a shorter or less is avertical longitudinal section of so much .of a machine as is deemed desirable toillus trate the. invention: Fig. 2, a view showing in detail a ribbon vibrating operating meniber: Fig, 3, a similar view showing a modification: F ig. 4, a'detail vertical longitudinalv section 'showing a miodilicaticm. v

.a is the platen and l) the ribbon 'vibrator pivoted at its lower end to the l'lorizontally disposed arm c of a bell crank lever pivoted at c" m a downward extension d from the shift rali that supports the platen carriage.A

vThe downwardly extending arm c2 of this bell crank lever has connected to it a for` wardly extending luik c connected at its Afront end to the upright arm y" of a bell crank lever that may be pivoted in the center of the maclnne on an ax1s f. The forwardly extending arm `f2 of this bell crank lever may have applied to it a reactionary spring as shown and to its end is pivoted a down# wardly extending member g, which I have called a linkfhaving` an enlarged opening in which the universalI bar it is located. The lower wall or side of this opening is stepped' as at It', lli", ti. lf the plate or linkg be adiusted so that the more distant surface it `lies in the paths of thc universal har there will he no actuation whatever of the ribbon vibrator and stencil work may then be done. if, on the other hand, the plate beso ad'usted that the surface hf lies in the 'path of the universal bar there will be a short range of movement imparted to the ribbon vibrator because the universal bar after having been carried through part of its downward movement-will engage that surface and the part g will thenact as a link to draw down the for-l A wardly extending bell crank arm f. if adi justment 'of the part g be such that its surface M .is in Lthe path of the universal bar', then thehnk or part g will be effective during substantially the entirerange of depre`s` Y in 'operation, printing may occur from the y oted at p in the downwar extension lower zone of the ribbon.

To afford accurate adjustment during assembling, the plate or link g may be provided with eccentric bolts i, that may be so adjusted that their peripheries will consti' tute the working surfaces as h', h2 of the link. This feature isshown in detail in Fig. 3. ln

Fig. 2, the pivot bolt g by -means of. which the link is suspended from the forwardly eX- tending arm f2 of the bellcrank may be eccentric thereby affording means for simultaneous adjustment of both surfaces h', h2. There are key levers,-one y' being shown,- that maybe of ordinary style ivoted in rear of the machine and acting irectly on the universal bar as is common. The link g may be adjusted by a horizontally disposed link 7c having its rear end connected to g and its forward end connected to the lower end of a vertically disposed lever m pivoted at Above the pivot this lever is provided with a sliding piece constituting` its upper part m to which is applied a reaction spring n; On the side of the lever is adownwardly extending. Qhook or pin o that may engage a ertures in a plate o so as to afford the t ee adjustments described. This lever n and consequently the plate o may be located centrally of the key board. To prevent overthrow of the ribbon there is provided a vertically dis )losed lever Y pivfrom the shift rail of the carriage and having in its upper end a lateral pin pf overlying the upper edge ofthe horizontally disposed bell crank arm c to which the ribbon vibrator is pivoted. The upper edge of this arm is appropriately recessed'so that in difl'erent ad justments of the apparatus, the pin p2 will act as a positive stop tolimit the throw of the ribbon vibrator. The-lever arm ma be adjusted correspondingly with the ink or plate g by means of a link g connected at one end to said plate and at the other to the lower end of the lever?. Such an arrangement of lever and stop devices to prevent overthrow of the ribbon vibrator is disclosed and claimed by me in my application, No. 372,465, filed May 8,1907- and is therefore notbroadly claimed herein. Thearr'angement of link Liever m, n, o, and slotted plate o is the same .as that described in my application filed simultaneously herewith in adjustment of a ribbon vibrator device' of 'different construction from that -hfereinV shown.

In Fig. 4, the' link orplate rockfs-f'about the universal bar hand therefore itfe'xtends yupwardly and into the opening 'therein extends a lateral pin projecting fromfrm f2 og the bell crank, above which pin or latera projection the upper wall of the opening in the link is formed with the surfaces IL', h2, h

arranged at different distances from the `axis h of the link. The horizontally disposed links -c and g are in this case ap lied to the plate or link g intermediate its en s instead of at the lower front and rear 'corners thereof as in Fig. 1.` -Otherwiseythe constructioi'i,and

operationare in Iall respects the sarna as a ove described, in connection with Fig. 1.`

1".-isy -the usual 'form of upwardly extending arm, vibrated longitudinally of the machine on movement of the universal bar. and cons nected by a jointed link rjwith the operating vlever r2 'of the escapement.,` The construcf tion of the link r andthe manner of its apy plication to the escapementlever r2. are shown in earlier applications'iiled byme and. forni no part o the invention herein claimed. The part which has been'deseribed as a linkof variab e length may perhaps be pregierly described' as a link which is engaged at differ-- ent points to thereby effect a greater or less movement of itfto vary, the range of nievement of the ribbon vibrator. It is, however, inteither case properly designated a link because it has' a drawing action and is subjectif ed to tensile strain. .llisfshown inFig. 2 the member or linkinay be open or cut awayjas, for instance, at y to faclhtateasseinblmg.

lUU

The generall arrangementof bell crank le# 4 vers and connecting link cen rally of the machine for operating the ribbon vibrator is shown in said application 372,465 and 4in my earlier application Serial No. 287,489 filed November l5, i905, andA is, therefore, not

A claimed herein. Bothsaid applications disclose automatically' acting'. ribbon vibrator stop4 devices cooperating with the vibrator in its different printing positions combined with adjustable ribbon. vibrator actuating.

means by which the vibrator may be moved to different printing positions, and, therefore, such subject matter is not claimed herein.

l claim: I i 1. Ribbon vibrating niechanisincfor a typewritmg machine comprising'the combination of a ribbon vibrator, a' universal bar, means for operating the'vibratorand an adjustable link having surfaces of different elevation operatively interposed between the ribbon fili..

ranges'of movement may be imparted to the ribbon vibrator according to the adjustment of said link. j

2. -Ribbon vibrating mechanism for a typewritin machine comprising the combination of agri bon vibrator, means for operating it comprising a bell crank lever, a universal bar and an adjustable link pivoted upon one. of the two last nanied parts and having operating surfaces at different distances froinits axis adapted to be engaged bythe other of said parts whereby accordingv to the adjustment of the link different rangcsof movement may be imparted to the ribbon vibrator.

`3. Ribbon vibrating meclninisni for a typewriting machine coiiipi'ising the combination of a ribbon vibrator, a universal bar, means for operating the vibrator, an adjustable link having surfaces of different elevation operatively interposed between the ribbon vibrator operating devices and the universal bar `the two last named parts and hav/ing operating surfaces at different distances --from its axis adapted to be engaged by the' other-of said parts whereby according to the adjust- 1 ment of the link different ranges of movement may be imparted tothe ribbon vibrator and means under the control of the operator for adjusting said link.

5. Ribbon vibratingmechanism for a typewriting machine ecmprisiiig the combination of a ribbon vibrator, a universal bar, means for operating the vibrator, an adjustable link having surfaces of different elevation operatively interposed between the ribbon vibrator operating devices yand the universal bar .and whose said surfaces are adapted to enating it comprising a bell crank lever, a iiniversal bar and an adjustable link pivoted uponA onev of the two last named parts and having operating surfaces-'at di'lercnt distances from its axis adapted to be engaged by the other'of said parts whereby according to the adjustment of the link different ranges of -movement may be. imparted to the ribbon vibrator and means adjustable coincidently` with the adjustment of said link for positively limiting the upward throw of the ribbon vibrator. Y

7. A ribbon vibrator mechanism for typewriting machines comprising the combination y of a ribbon vibrator, means for operating it comprising a bell crank lever, a universal bar and anadjustable link mounted upon one of saidl two last named parts and having surfaces at dill'erent distances yfrom the point at `which .it is mounted and either one of which, yaccording to the adjustment of the link, is

adapted to be engaged during depression of the universal bar by the other one of said two last named parts..

8.y A ribbon vibrator mechanism for typewritin machines comprising the combination o a ribbon vibrator, means for operating it comprising a bell crank lever, a universal bar, an adjustable link mounted upon fone of said two last named parts-and having surfaces at different distances from the point at which it is mounted and either one of which, according to the adjustment of the link,\is adapted to be engaged during depres- .sion of the universal bar by the other one of which it is mounted and either one or which,

according tothe adjustment of the link, is adapted to be 'engaged during depression of the universal bar by the other one of said parts and means for individually adjusting saidsurfaces with respect 'to the point at which the link is mounted.v

10. Ribbon vibrating mechanism foi a typewriting n'iachine comprising the combination of a ribbon vibrator, a universal bar, means l'or operatin the vibrator, an adjustable link having surfaces of different elevation operatively interjmsed between the ribbon vibrator operating devices and the universal bar and whose said surfaces are adapted to engage cnc of said parts, whereby ldill'ei'ent ranges of movement may be imparted to the ribbon vibrator according to the adjustment of said link and escapcnient devices operated during movement of the universal bar.

11. Ribbon vibrating mechanism for a typewriting machine comprising the combination of a ribbon vibrator, means for operating it comprising a bell crank lever, a universal bar having a uniform extent of depression, an adjustable link pivoted upon one' of the two last named parts and having operating surfaces at di erentV distances from its axis adapted to be engaged by the other of said parts whereby according to the' adjustment of the link dierent' ranges of movement may be imparted to the ribbon vibrator and escapement devices operated by the universal bar during its movement.

12. Ribbon vibrating mechanism for a .typewriting machine comprising the combi- -nation of a ribbon vibrator, means for oper ating it comprising a bell crank lever, a univversal bar and an adjustable link pivoted upon one of the two last named parts and having operating surfaces at different distances from its axis adapted to be engaged 20 operator for adjusting said link and escape- 25 ment devices operated by the universal bar.

In testimony whereof, I. have hereuntov subscribed my name.

EDWARD BY. HESS. Witnesses:

JOHN M. LEE, F. BROWNING.