US1041722A

US1041722A - Type-writing machine.

Info

Publication number: US1041722A
Application number: US57786010A
Authority: US
Inventors: Walter E Barnard
Original assignee: Underwood Typewriter Co
Current assignee: Underwood Typewriter Co
Priority date: 1910-08-18
Filing date: 1910-08-18
Publication date: 1912-10-22
Anticipated expiration: 1929-10-22

Description

#z My? W. 5. BARNARD. TYPE WRITING MACHINE. APPLICATION FILED AUG. 18, 1910.

-1Io of'ribbon. of different-colonarc Shift-able UNITED; STATES PATENT OFFICE;

wanrnn n. BA'mvAItn, or HARTFORD, coivivnc'rrcn'r, ASSIGNOR 'ro UNDERWOOD TYPE- vvmrnn COMPANY,

OF NEW YORIF, N. Y.; A CORPORATION OF DELAWARE.

Tyre-WRITING momma.

- a citizen of th United States, residing in j Writin Machinea-of whichthe following a speci cation.

The

chine, to this" end present j invention relates-Ito a type; writing machine in which two parallel fieldsinto and out of active posit-ion with respect to the printing :point of the type, the ma- 7 comprising" means for. setting the ribbon vibrating mechanism so that an actuator which reciprocates at every stroke of the type bars may give the ribbon vibrator the proper throw to bring thede sired field to, active position. 2D

. The means for-setting the-ribbon vibrator .to the actuator has. commonlyf comprised a device such for instancejas a rock shaft movable to the right to-connect the ribbon. vibrator to j the" actuator such manner that, thereafter, upon operation of a type key,-the vibrator moves a dlstancesuificient' to, bring one of the ribbon fields to the printing point; and movable tothe left,

to make such aconnection between the :vibrator-and theactuator that operationof a type bar then moves the-vibrator a difi'erent distance to bring the other-fieldto the printgagementwith the rock shaft. 4g

ing point! .It I or the like to have. an intermediate position stripe of ribbon into use.

is also old forthe rock shaft in which the'ribbon vibrator is entirely dis: connected from, the actuator and-cannot be moved by the type bars to bring either rib- .bon' field to the, printing point. "The'means fOI'CGDtQIJ g-and holdin the rock-shaft in its intermediate position asordinarily been a devicesuitably mounted on the machine frame and .movable' into and out. of. ten-- ne objectiof the present invention is to avoid the necessity 1 of the operator making a special movement to return the vibratorsilencing lever to normal position before operating aacolorkey .to brlngthe desired Another objectis to provide a more sim e I 113 and conveniently operated means than as heretofore been devised for setting the ribbon iactuating'meansto re n er both rib:

' an preferred form of hon fields. inactive.

[to normal tail in connectiontuating mechanism so and parts for operating threaded into and supported by other of the color fields to the invcn121 12 ,..1.

Patented o a.22,1e12.

:employ'the rock shaft having the functions above mentioned,- but instead of having an independently movable device for centering the same in its intermediate position, the

shaft of my invention is self-centering. To this endthe shaft is free to have. longitudinal as well as rocking movement in-its hangers, and carries a point or bevel which,

When the shaft is moved longitudinally, en-

gages a centering surface fin one ofthe hangers and causes the shaft to turn from either side to. its intermediate position where 2 it Is held against further turmng movement in either direction.

shaft self-centering, the-necessity of .a e-

.By thus rendering .the i construction becomes'simple and inexpensive. The key for cente and the entire arrangement isring the shaft is carried on the end of the shaft between the therefore compact and heat in appearance.

The shifted shaft and key remaln in their rear positions until either of the color-shift keys 1s depressed; and the color-shift key automaticallyshifts osition.

80. the shaft endwise back Having riefly described the objects and nature of the invention,

a structure embodymg the same will now be described in dewith the accompanying drawings in Which- Figure 1 is a top plan view .ofso much I of an Underwood 'typewriting machine as sufiices .to disclose; the presentinvention.

1 Fig.2 is a top plan view showing theiribbon actuating mechanism set for one of the ribbon' fields. ig. 3 is a. view similar to Fig. 2 but show' the ribbon actuating mechanism set for ffie other ribbon field. Fig. l is a, top plan view showing the acset that both ribbon fields areginactive. Fig. 5 is a view in side elevation, partlysect-ional, of the rock shaft the same. Fig. 6 1s a perspective of the assembled mechanism. Fig. 7 is a detail view in side elevation of the rock shaft and parts carried-thereby.

. Referringv to the drawings, composed of color fields '1 and 2, .is shown the vibrator 3. The latter has up .and down movement which may be varied to bring one or the the printing nointf-{The vibrator 3 is carriedby a lever the ribbon, v 5

- of the case-shifting mechanism of, the mabe rocked a distance engagement with the slot 9 which of the I presented to 24 carries a key 29, and

of the. shaft 24,

chine. .The universal bar 8 vibrated by'the type bars is fixed upon a frame 9. Attached by a screw 10 to a bracket 11 on the frame [9 is an actuator 12.

A slot in the bracket- 11 permits of lateral movement of the actuator on the frame 9. The actuator has two forwardly extending

ears

14 and 15. The lever 5, which carries at one .end the ribbon vibrator, projects at its other end; upward between the

cars

14 and 15 and carries '

wrist pins

16 and 17 positioned at different distances from the fulcrum of the; lever. The

ears

14 and 15 have vertical; slots 18 and 19 respectively. When the acf tuator is'moved laterally to the right'on the frame 9',- the slot 19engages the pin 17 when moved to the left, the slot 18 engages the-pin 16.. The ears14 and'.15 are however sufiiciently far apart to allow 'of both pins being disengaged from the actuator when the latter is at the central point of its path of" movement .on the frame 9. If the pin 16 is in engagement with the slot 18 when the frame 9 moves with the universal bar, the lever 5 and vibrator 3 with the ribbon will depending upon the distance of the wrist pin 16 from the fulcrum of the lever. Similarly the movement of the vibrator and ribbon when the pin 17 is in v 19 depends upon distance of pin 17 from the fulcrum of The arrangement of the pins 17 5 therefore determines fields is in any instance? the printing point. If neither; pin engages aslot in the actuator, then when the latter moves with the frame 9, no move" ment is transmitted to the lever 5 and neither.

the the lever. and 18 on the lever r'bbon 'ribbon field is presented to the printing point The means for setting the actuator in any of these positions shown in Figs. 2, 3, and 4 will now be described. j

Pivotally attached at 20 to the actuator is a bar 21, the other end of which ishinged at 22 to an arm 23 fast to a rock shaft 24. The rock shaft 2/4 has a bearing 25 at its forward end (see Fig. 1) in the frame of the machine, and at an intermediate point (see' Fig. 5) has a second bearing in a hanger or'bracket '26 secured to the frame bar 27. Fast to the forward end of the shaft is a cross arm 28, which to the left of the shaft a key 30. On depression of the key 29,.the shaft 24 is rocked counter clockwise, and acts'through the arm 23' and bar 21 to move the actuator 12 to the position shown in Fig. 3'. If the key 30 is depressed, the shaft 24 is turned clockwise and bring's theactuator to; the Fig. 2' position. The keys 29 and 30' therefore determme which of-the two ribbon fields; is;t'o,

of the shaft 24,

'purpose.

limit the'throw of the shaft in either direc and;

'to bring the member longitudinal to designate their to the right invention, .thestrueture shown 1s capable of considerthe type bars are operated. has fizied to it a plate 31 having two nicks 32, each operated according to the position to be engaged by a spring detent member 33 carried on the frame bar 27. In theFig. 2 position one of the nicks be presented to the printing point when The shaft 24 a v 32 cooperates with detent 33 to hold the. shaft-against displacement, and in the Fig.

3 position theother nick 32 serves the

same Ears

39 and 40 on the hanger 26 tion by engaging the plate 31..

Fixed to the shaft 24 by set screws is. a collar 34 carrying an arm 35 perpendicular to the shaft, but having at its-end a wedge or spear-shaped horizontal section 36.

Opposite the pointed member 36 is an opening in the hanger cient longitudlnal movement in its bearings shown in Figs. 2 and 3 tothe position shown in Fig. 4. Regardless of thedegree to which the shaft 24 may have been rocked to the right or left, the wedge 36 by acting. on one or the other side of 'the opening 37 in the hanger, turns the shaft tot-he center 36. from the position 26. The shaft 24 has suffiing position shown in Fig. 4,.1n which position, it will be noted, both wrist pins 16 and 1'7-are disengaged from ears 14 and-15. In this position, operation of the type. bars results in no movement of the lever 5 .and ribbon vibrator. This is the'stenciling position of the mechanism. Displacement of the shaft 24' from its stenciling position is opposed by the engagement of bothzsides of the wedge with the bracket 26, and by the yielding pressure of the fiat rear portion 0 springs-33 upon the flat top ofarm 31, Fig.

4, so that accidental rocking of theshaft is prevented.

.The key 38 for giving the shaft 24 its movement .is carried on the forward end of the shaft (as shown in the several figures) between the keys 29 and'30. The keys .29, 30 and 38 are-suitably marked purpose. 1

After the machine has been operated for stenciling, either color-

shift key

29 or 30 maybe depressed, for the-purpose of shifting the actuator 12 to one side orlthe other of its central position. In sodoing, the shaft 24 is necessarily rocked to one side or the other; and in either case one of the opposite cam edges 37 mounted on said shaft will,

by reason of its-engagement with the edge of opening 37, force the shaft QIldWlSC forwardly to normal position. The link 21 swings forwardly and backwardly to accommodate this endwise movement of shaft 24;:iand'in al'l'cases is efiicient to shift the actuator 12. p

I have described a simple form of the but it will be understood that Zinvention; 4 I V 7 .Having thus described my invention, 1 claim: y 1. In a typewriting machine, the combinati on. with an actuator which reciprocatesat the type strokes," of mechanism for setting the actuator to cause thesanie to vibrate either of tw'offields ofiribbon to cover the printingpointfat the type strokes, said mechanism comprisinga key controlled rock *shaft which is rocked to the right to'set the actuator f r one of the ribbon fields, and 'to the. left to setthe actuator for the "other of 15. the tibbonfieldgand having a position termediateits right andleft hand positions in which the actuator is set for neither rib- ,bon', field, saidshaft being also movable longitudinally in its bearings, and means with whichthe shaft coeperates when moved longitudinally't'o cause theshaft to be rotatedduring such longitudinal movement to its aforesaid intermediate-or unsetting position. i a 2. In a typewriting machine, the combination with an actuator which reciprocat'es at the type strokes,.of mechanism for setting "the actuator tofcause the same; to. vibrate. either of two fields of ribbon to cover the f -.printing point at thejtype strokesfsaid mechanism comp-risinga key controlledziock I a shaft which is rocked to theright to set the actuator for oneof the ribbon fields, and to v the left toset the actuator for the other of theribbon fields, and having a position inter'mediate its right andleft hand positions f 1 in which the actuator is set forl-neither rihi hon field,said shaft being' also movableilonj gitudinally in-.its"bearings,and in'eans with which the shaftIcoeperates when moved longitudinally to cause the shaft to be rotated 7 during such longitudinal movement to itsg aforesaid intermediate Or unsetting position, and means to oppose turning ofthe shaft ineither direction when the'latter is in the un- I able modification within the scope of the setting or silencing position. I 3. Ina typewriting machine, the combination with an actuatorswhich reciprocates'at Y the type strokes, of mechanism for setting the actuator to cause the same to vibrate either of two fields of ribbon to cover the printing point at the type strokes, said mechanism comprising a key controlled rock shaft which is rocked to the right to set the actuator for one of the ribbon fields, and to the left to set the actuator for the other of the ribbon fields, and having a-position intermediatelits right and left hand positions in which the actuator is set for neither ribbon field, said shaft, being also movable 1on 6'0 gitudinally in its bearings, means with which the shaft coeperates When moved longitudinally to cause the shaft to be rotated during such longitudinal movement'to its aforesaid intermediate or unsetting position, and yielding means to oppose the turning of the shaft in either is in the uns'etting tionwith an actuator the type strokes, of the actuator to 0 either of two fiel printing point at the type .strokes,-said"1'0o mechanismcomprisinga key controlled; 7, shaft which is rockedtdthe right to set the actuator-for oneofthegribbonfields. and to thefleft toset the ribbon fields, termediate its ri in which the, actuator jlS set for neither "ribbon field, said shaft being also-movable lone gitudinally in its I 1 ing a wedge or cam-shaped centering device, 110

and means with coeperates upon longitudinal movement of the shaft to turn the shaft gitudinal movement from or itsleft hand position to termedia-te Or unsetting posi direction when the latter position. I 4. In a typewriting machine, the combma:

' tion with anactuator which reciprocates at s the type strokes, theactuator toc either of two fiel printing point at the type strokes, said mechanism com shaft which is actuator-for one of the ribbo the left to set the actuator for the other of the ribbon fields, and having termediate its right and left 11 in which the actuatoris set f0 hon field,said shaft being also gitudinally inits bearings, an which; the shaft cooperates when moved longitudinally to cause the shaft to be rotated. during-such longitudinal movement to its 5 aforesaid intermediate-or unsetting position, said last named means acting to oppose turntilfig-of the shaft in either direction when shaft carryingacrossbar witha key at each 99 endxfor rocking th'e shaft to the rightor left hand ribbonj settingpositions, and to copperate with said shaft-rotating means shift thelshaftendwiseforwardly; I

of -.mechanism for"setting ausethesame to vibrate ds of :ribbon to cover the prisinga key controlled rock rocked to the right to set the 7 n fields, and to a position inand positions v r neither rib g0 movable lond means with e'latter is in theyurisetting position, said i to y 5. Ina typewriting -machine, the combina '95 which reciprocates at mechanism for setting ause" the same to vibrate" ds of ribbon ltocoverithe' 5 the actuator -for the other of; and having a position in-:'" ght andleft hand positions 7 bearings, said shaft carry which said centering device during such loneither'it-s right its aforesaid intion.

6. In a typewriting machine, the combinaof mechanism for setting at the type strokes, said rising a keycontrolled rock the left to.- s"et1the actuator for the other ofthe ribbon fields, intermediate its. tions in which the actuator is set for neither ribbon field, said shaft being also movableand having a position right and left hand osiing a, wedg or cam-shaPB centering de' and shaped to cooperate-with saidcentering device upon tudina-l movement-from either its right or 4 the actuator" tolcaus'e the either ofitwo printing point at the"'type ,strokes,- said tated, during such the type strokes,

printing point at mechanism comprising a -.'sha-ft which is rockedto I, actuator for one of the ribbon fields, and to ,termediate its right and p in which the actuator is set for longitudinally in its bearings, and means to cause the element'to with which the shaft cooperates when moved longitudinally to cause the shaft to be rofield. a

longitudinal movement, 9. Ina typewritingmachine, the combinafrom either its right or-its'left hand set-. tion with an actuator which reciprocates at t" position,'to its aforesaid intermediate. the type strokes, of. mechanism for setting the -actuator to cause or "ii-nsetting position, and manipulative means for rocking said shaft in either dieither of-two i-fields, of ribbon to cover the rection and causing it concomitantly to reprinting point at the type strokes, saidi turn endwise to normal position. v mechanism comprising a key controlled ele- 7. In a typewriting machine, the combinamentwhich maybe reciprocated' between two positions in one tion with an actuator which reciprocates at A H actuator is set for one ribbon field and --in of mechanism for setting theactuator to cause the same to vibrate the other of which positionsthe actuator is set for the other ribbon either of two fields of ribbon to cover the the type strokes, saidhaving also a movement ina differentdireckey contr lled rock tion from said reciprocating movement, and

the right to set the a stationary guide with the left to set the actuator for theother of the ribbon fields, and havingla position inlefthand positions neither ribbon field, said shaftbeing also movable longitudinallyin its bearings, said shaft carryme'ntto-cause said element to assume a position in which the actuator isset for neither ribbon field.

10. The combination with a ribbon-vibrat-' jing mechanism, of a shifter therefor, means for moving said shifter. in opposite directions to bring diiferent fields of the ribbon vice,.and a stationary element positioned a. third direction, and, a camdevice for longitudinal movementof the bringingsaid shifter into'aribbon-silencing shafttoturn the shaft during such longi-,

ti'onh 11. The ing mechanism, keys for moving rections to bring 'difterent'color fields of the ribbon into use, a third key for moving said shifter in a third direction, and a cam'device for bringing said shifter into a .silenc ,ingposi'tion whenmoved in said third -di-' combination with a its left hand position to its aforesaid interof a shifter; therefor, two

mediateor unsetting position. w 8.111 a typewriting machine, the combinationwith an actuator which reciprocates at, the type strokes, of mehanismfor setting "same to vibrate fields of. ribbon to' cover. the

mechanism comprisingakey controlled element which maybe reciprocated between two positionsin one of which .positionsthe "of the three keys from which it isffshiftable' by either the remaining two of which positions :the'

which said element cooperates when given 1ts last named moveinto use means for moving said'shifter' in position when movedin said third direc said shifter in 'opposlte d1-' assumea position i which the actuator is set for neither ribbon: I

the same to vibrate f field, said element i rection'; said shifter being movable. by any position to.

actuator isset for one ribbon ;fi'eld and 111 keys. p t w t .the other of which positions the actuator 4, v AL'IER E. BARNARD. 'is set for the other ri'bon field,fsaid ele- Witnesses: a i' 45 ment having direction from said rec procating movement,

- 7 v FRANKA, Coon, r LYMAND. BnoucH'roN.

also a' movement in a different Copies of-this patent may beobtained for five cents'each, by addressing the Commissioner of. Patents,