US1041723A - Type-writing machine. - Google Patents

Description

' W. E. BARNARD. TYPE WRITING MACHINE. APPLICATION FILED AUG. 20, 1910.

Patented Oct. 22, 1912.

L T E E K 4 S T E H S 2 w. E. BARNA-RD. TYPE WRITING MACHINE. APPLIOATiON-IILBD AUG, 20, 1910.

Patented 001;. 22, 1912.

2 SHEETS-SHEET 2.,

-' Qzww? ing Machines,

7 specification.

to the printing a rock shaft, movable to the right to connect r the ribbon vibrator and actuator in such is of advantage in that v UNITED STATES PATENT onrion.

WALTER E. BARNARD, OF HARTFORD, CONNECTICUT, ASSIGNOR T0 UNDERWOOD TYPE- WRITER COMPANY, or NEW YORK,

1\ l'. Y., A CORPORATION OF DELAVT ARE.

TYPE-WRITING MACHINE.

Specification of Letters Patent.

Patented Oct. 22,1912.

Application filed August 20,1910. Serial No. 578,228.

To all whom it may concern; I

Be it known that I, WALTER E. BARNARD,

a citizen ofvthe United States, residing in,

Hartford, in the County of Hartford and State of Connecticut, have invented certa n new and useful Improvements in Type-Writof which the following is a The present invention relates to a type writing machine in which two parallel fields of ribbon, of different color, are shiftable into and out of active position with respect point of the type, the machine, to this end, comprising means for setting the ribbon-vibrating mechanism so that an actuator which reciprocates atevery stroke of-the type bars, may give the ribbon vibrator the proper throw to bring the desired ribbon field to active position.

The means for shifting the ribbon vibrator with relation to the actuator has commonly comprised a device, such for instance as a manner that thereafter, upon operation of a type bar, the vibrator moves a-distance suflicient tobring one of the ribbon fields to the printing point; and movable to the left to make such a connection between the vibrator and the actuator that operation of a type bar then moves the vibrator a different.

distance to bring the other ribbon field to the ribbon field the actuator may happen to be' set, the operation'of the key resets the actuator for the other ribbon field. The elimination of one of the keys h'eret'oflfre required in certain respects the mechanism is simplified, and in that the the same, the

keyboard space required for the mechanism is reduced. a

It is of course desirable that suitable means be the ribbon field for which the actuator is set; and another feature of the invention is to provide anindicator of the nature which,

although suitably connected to the actuator and to the setting key, nevertheless involves practically no added parts to the mechanism. In connection with the abovementioned mechanism, I employ a device operated by a so-called stencil key for setting the actuator so that neither ribbon field can become active when the type bars are operated for stenciling. In this-application no claim is laid specifically to the devicefor setting the actuator forstenciling; but the manner in which this device is connected to and combined with the single key mechanism above provided for indicating at all times,

mentioned, does form part of the invention.

Other objects and features of the invention will presentlyand more fully appear on reference to the accompanying drawings in which Figure 1 is a perspective of so much of a type-writer mechanism as sufiices to illustrate the invention. Fig. 2 is a detail perspective. view of the device which directly operates the rock shaft for setting the actuator. Fig. 3 is a detail perspective view of the detentmechanism for holding the rock shaft against displacement when set. Figs. 4:, 5, 6 and 7' are views in front elevation of the rock shaft setting mechanism shown in Fig. 2, and of the plunger which actuates several views illustrating successive positions assumed by this setting mechanism during two successive operations of the key. Fig. 8 is a view in side elevation of the mechanism shown in Figs. 4. to 7. Fig. 9 is a View in rear elevation of the mechanism shown in Figs. 4 to 7; certain of the parts being broken for the purpose of more clearly illustrating the invention.

Referring to the drawings, the ribbon, composed of fields 1 and 2, is shown threaded into and carried by the vibrator 3, the latter being -hinged'to one end of a lever 4:,

fulcrumed at 5 to a bracket 6 attached to the shift rail 7 of the c aseshifting mechanism. Mounted on a frame 8 with a uni- ,yersal bar 9 which is vibrated by the type ba rs 9 isan actuator 10. The actuator has a pin and slot connection to the frame 8 so that in addition to moving with the frame it may also have lateral adjustment on the '5 frame. The actuator hasQtwo forwardly projecting ears 11 and 12, provided respectively with vertical slots 13 and 14. The arm of the lever 4 beyond the fulcrum 5 carries two wrist pins 15 and 16 positioned at (liiferent distances from the fulcrum. The pin projects toward the ear 11 of the actuator and the pin 16 toward the ear 12, and each pin is in alinement with the slot in the actuator ear toward which it pro- 15- jccts. The distance between the ears 11 and ,12 is such that the'actuator may assume a "fposition in which neither of the pins lies within a slot. The actuator in its adjustment on the frame 8 may however be moved to the .left to cause the pin 15 to enter the slot 13, or to the right to cause the pin 16 to -enter the slot 14. If, while either pin lies within its slot, a type bar and consequently the frame 8 is operated, then the movementof the actuator is transmitted to the lever 4 and ribbon. According to the distance of the wristpins from the fulcrum v, .of the lever 4, the movement of the ribbon will be greater or less. If the lever 4'receives its shorter movement, the field 1 will be brought to-the printing point; whereas if the lever receives its longer movement, it

will be the field 2 which is active. If neither pin lies within its slot, then upon movement of the type-bars,;.no movement is transmitted to the lever 4, and both ribbon fields remain inactive. The mechanism for controlling the three adjustments of the actuator will now be described.

Pivotally connected at one end to the act-uator 10- is a bar or rod 17, the other end of which is pivotally connected at 18 to an arm 19 fast on a rock shaft 2O. Also fast on the rock shaft 20 is a collar 21 carrying a cross plate or arm 22,whi'ch at one end carries a pin 23 and at the other end a pin 24. The shaft 20 has a hearing at or near its forward end'in a hanger or bracket 25 on the frame of the machine; and to the real v thereof is a hanger or bracket 26 attached to "the frame bar 27. The shaft has a limited f-rocking movement in its bearings,and, as

"will -presently appear, a limited longitudinal movement also. Secured to the frame members 25 is a bracket 28 carrying a stud and at the other end to a pin 36 on the bracket 28 normally holds the plate in its uppermost position,. with the stud 29 at the lower end of slot 32, and the shaft 20 at the lower end of the slot 33. A draw bar 37 forming part of or attached. to the plate 30 connects the same to key lever'38, which carries at its forward end the key 39 from which 'the actuator is set for the ribbon field. 7 When the key 39' is depressed, the movement .is transmitted to the shaft 20 through the. plate 30 and a.v member .40, which remains to'be described;

The member-4O is a two-armed pawl ofinverted V-shape pivotally'attached at .41 to the upper end of the plate 30. A leaf or plate spring 42 attached at 43 to the plate 30- (see Fig. 9) tends to rock the member 40 to its central position (as shown in Fig. '4). The arms 44 and 45'of the mem ber 40 are ,each recessed at '46 for engagement with the pins 23 and 24 of the cross plate 22, when, on depression of the plate 30, either of the pins happens to be in 'a'linement with such a recess. The distance be tween the pins 23 and 24 is greater than the distance between the recesses 46 however, so that only one at a time of the pins 23 and 24 'can be engaged by the member 40, as will now be explained.

Assuming the shaft 20 and cross plate 22 to be in the position shown in Fig.4, the actuator will then be in its right hand position, and the mechanism is set" through the wrist pin 15 and lever 4 for one of the rib.- bon fields. No pressure being maintained on the key 39, the plate 30 by reason of the spring 34, will be in its uppermost position, and the member 40 by reason of the spring 42 will be in its central position.

If now it be desired to set the actuator for the other ribbon field, the key, 39 is depressed, and, through the lever 38 and bar 37, draws down the plate 30 and member 40 against the tension of the spring'34. The pin 23 being in the path of the recess 46 of the arm 44 (see Fig. 4) is engaged by the latter, with the result that further downward movement of the plate 30 causes the cross arm 22 and shaft 20 to be rocked to the position shown in Fig. 5, the member 40 being also rocked against the tension of its spring 42, by reason of the engagement of the arm 44 with pin 23. The rocking of member 40 causes arm 45 and pin24 to pass eachot-her without engaging, so that finally when the key 39 is fully depressed, the parts are positioned as shown in "Fig. 5; The key 39 is then released, and springs'34 and 42 return plate 30 and member 40 to normal position as shown in Fig. 6; The movement of shaft 20 has caused the actuator 10 toengage wrist pin 16, and'the other ribbon field is now active when the type bars are operated. To reset the actuator for thea first ribbon.

ioo

field, andto return the parts from th'Fig. 130

from either the Fig. 4 or the Fig. fi position, there is mounted on the frame bar 27 a .6 position to theposition shown in Fig. 4,

vbe returned by their springs to the Fig. 4' po sition, and theresetting will have been completed'. i

-To hold the parts against displacement spring detent member 47 adapted t'o engage'either of two nicks 4 8 and 49,,inthe periphery of a plate .50 fast to'the rock shaft 20. The engagement of the detent with I nick-48 causes the parts to beheld in the Fig. positipn; and with nick tobe held in the F ig. 6 position.

Fast to theforward end of the shaft 20 is a pointer or needle 51 which cotiperates with a dial plate 52 on the facepf the frame, to

" ff: show the setting of the 'me'chanism. \Vhen the parts are in the position shown in Figs 4 the needle registers with the left hand end of the dial plate. In the Fig. 6 position ofthe parts the needle registers with the right hand end of the dial. plate. When the ac.

tuator is in stenciling position,'the needle,

overlies the center of the dial plate. I

For the purpose of centering the shaft 20 and actuator sothat both ribbon fields are inactive, there is fast to the shaft a plate 53 having a spear or wedge-shaped endturned toward the hanger 26. In the hanger 26 is an opening 54 into which the wedge shapedvend of the plate 53 is adapted to enter when the shaft is given a longitudinal movement in its bearings by pressure on a key 55. No

' matter to which side the shaft 20 may have been rocked before the key 55 is pressed, the wedge of the plate 53 by engagement with the walls of the opening 54, causes the shaft 20, when moved longitudinally, to be also j rocked to the centering position, in which both ribbon fields are inactive. In this position the hanger holds the shaft against displacement until the key 55 is again drawn out.

'It will be understood by persons skillediin' the art that the structure herein shown and described is capable of various modifications within thescope of. the invention.

Having thus described my invention, I

claim:

1. In a typewritmg machine, the combination with an actuator which reciprocatesat the type strokes, of mechanism, including-a rock shaft, for effecting two different settings of the actuator to cause the latter to vibrate either of two fieldsof both of said settings, said key having the ribbon to cover the prlnting point at the type strokes, a slngle key controlling said rock'shaft for v the type strokes, of mechanism for effecting two different settings of the actuator to f cause the latter to vibrate either of two fields of ribbon to cover the printing point at the .type strokes, a single key controlling said mechanism for both ofsaid settings, said key having the same movement in each instance, means whereby the movement of the key in one instance effects one of said settings and in another instance effects the other of said settings, and a second key movable in one direction for effecting a third setting of the actuator from either ofsaid settings to render both ribbon fields inactive at the type strokes.

In a typewritlng machine, the combination with an actuator .which reciprocates at the type strokes, of'mechanism for effecting two different settings of the actuator to cause the latter to vibrate either of two fields of ribbon to cover the printing point at the type strokes, said mechanism comprising a rock shaft having clockwise movement in effecting one of said actuator settings and.

anti -clockwise movement in effecting the other of said settings, a. single key controlling said mechanism for both of said settings, said key having the same movement in each instance, means whereby the movement of the key in one instance ef fects clockwise-movement of said rock shaft and in another instance anti-clockwise movement of said rock shaft, and means dependent uponthe movement of said rock shaft in a third direction for silencing the ribbonvibrating mechanism.

4. In a typewriting machine, the combination with an actuator which reciprocates at the type strokes, of mechanism for effecting two different settings of the actuator to cause the latter to vibrate either of two fields of ribbon to cover the printing point at the type strokes, said mechanism comprising a rock shaft having clockwise movement in effecting one of said actuator settings and anti-clockwise movement in effecting the other of said settings, a cross plate fast to said shaft for rocking the same, a single key for. controlling said mechanism for both of said settings, said key having the same movement for each of said settings, a slide reciprocated by said key, a member carried by said slideadapted on each operation of the key to engage one end of, the cross plate on the rock shaft, according to the setting of the latter and to rock the shaft toits other setting; and means dependent upon an endribbon-vibrating mechanism. I y

5. In a typewriting machine, the cOmbiIiaE-j efiecting the other of said settings, and-a wise movement of the shaft for silencing tion with an actuator which reciprocatesat the type strokes, of mechanism for effecting two different settings of the actuatorfto cause the latter to vibrate either oftwo fields of ribbon to cover the printingpoi itf at the type strokes, said mechanism coin prising a rock shaft having clockwise movement 1n effecting one of said, actuator settings and anti-clockwisemovement 1n cross plate fast to said shaft for rocking the same, a single key for CODtIOllIDg said mechanism for both of said settings, said key has: mg the same movement for each of said set;

tings, an element .reciprocated by said key, and a two-armed oscillatory lever pivoted to said key reciprocated element and movable with the latter bodily and perpendicularlyh toward and fromthe rock shaft and cross plate thereon; the arms of said lever, during this movement, straddling the shaft so that, acc'ordingto the setting of the shaft, one end of the cross plate will be engaged byion e.

arm of the lever and the cross plate with the shaft thereby rocked to its other setting, the

' lever, by reason of the engagement of one latter may be efiected.

arm thereof with the cross plate, 3 being rocked to remove its other arm fromthe path of the cross plate, so that the setting of the 6. In a typewriting machine, the combination with an actuator which recip'rocates at the type strokes, of mechanism for effecting two different settings of the actuator to cause the latter to vibrate either of two fields of ribbon to cover the printing point at the type strokes, said mechanism comprising a rock shaft having clockwise movement in effecting one of said actuator settings and anticlockwise movement in efi'ecting the other of said settings, and a cross plate fast to said shaft for rocking the same, a single key for controlling said mechanism for both of said settings,said key having the same movement for each of said settings, an ele- .ment reciprocated by said key/e and a twoarmed oscillatory lever pivoted to said key reciprocated element and movablewith the latter bodily and perpendicularly toward and from the rock vshaft and cross plate thereon; the arms of said lever, during this movement, straddling the shaft so that, ac-

cording to, the setting of the shaft, one end of the crossplate will be engaged by one arm of the lever and the'cross plate with L Y the shaft thereby rocked to its other setting, the lever, by reason of the engagement of one arm thereof with the cross plate, being rockedto remove its other arm from the path of the cross plate, so that the setting; of thelatter may be effected, a springfor'returning the key-reciprocated element to roam normal, position after each setting, and a spring for swinging the lever on its pivot to normal position when the movement of w thekey-reciprocated element has disengaged the lever from'the cross plate.

'-7."In a. typewriting machine, the -combi-i nation with an actuator which reciprocates mg two different settings of the actuator to cause the latter to vibrate either of two. "fields of ribbon to cover the printing point ,at the type strokes, said mechanism comprising a rock shaft having clockwise movement n effecting one ofsaid actuator settings a'nd'anti-clockwise movementin efiecting the other of said settings, a single key controlling said mechanism for bothof said settings,said key having the same movement In'eac-h lnstance, means whereby 'them0vement of the key in one instance efiects clock- "at -athe type strokes, of mechanism for efifect- I other instance anti-clockwise m0vem of U wise movement of said rock shaft and? said rock'shaft, said shaft being also" "ovable longitudinally in its bearings, and

means cobperating with said shaft, when the latter is movedlongitudinally, to cause the shaft to be rocked from either side to a position in which the actuator can vibrate neither ribbon field.

'8. In a typewriting machine, the combination with? an actuator which reciprocates at the ty e strokes, of mechanism for efi'ect- 1 mg two ifferent settings of the actuator to cause the latter to vibrate either of two fields of ribbon to cover the printing point at the type strokes, said mechanism comprising a rock shaft having clockwise movement in effecting one of said actuator settings, and

anti-clockwise movement in effecting the other of said settings, and a cross-plate having at each end a pin, and being fast to said shaft for rocking the same, a single ke for the cross plate with the shaft thereby rocked to its other setting; and 'means dependent.

upon an endwise movement of the shaftfor silencing the ribbon-vibrating mechan1sm..:

9. In a typewriting machine, the combination with an actuator which reciprocates ingtwo different settings of the actuatorto cause the latter ,to vibrate either {of two fields-of ribbon to'cov'er the printing pi'mt i rec at the type strokes, said com at the type strokes, of mechanism, for efiecjir prising a rock shaft having clockwise move having the same movement for each of said settings, an element reeiprocated by said key, and a two-armed oscillatory lever pivoted to said key-reciprocated element and movable with the latter bodily and perpendicularly toward and from the rock-shaft and cross-plate thereon; the arms of said lever,

shaft so that, according to the "setting of the shaft, one end of thevcross plate will be ento cover the printing point,

gaged by one arm of the lever, and the cross plate with theshaft thereby rocked to its other setting, and means for returning said lever :on its pivot from Whichever sideit may vhave been rocked, to a central position with respect'to the shaft after each operation of the key, v y

l0. Theicombinationwith a ribbon-vibrat-- ing mechanism operated by the type strokes, of shiftable mechanism for varying; the operation of the ribbon-vibrating mechanism, to cause diiierent colors or stripes of ribbon a key, n1eans operated by successive similar strokes of said key for effecting alternate shifts of said and a second key. on

"shitting mechanism,

finger piece movable inone direction to adjust said shiftable device,

during thismovement, straddling the the color finger-piece effective been shifted by from either posi- :tion to which it has'been shifted, to a pos'i-' tion to silence the ribbon-vibrating mechanism.

11. In a typewriting machine, a shiftable vibratory ribbon mechanism comprising, as primary elements, both akey-operated mem her, and a shiftable member for varying the color field or stripe of the ribbonvthrough which the types strike; a duplex doubleacting pawl being provided on one of said primar elements, and cooperative teeth or projections being provided upon the other of said primary operations of said key eilect alternate shifts of the other primary element; and means to silence said vibratory ribbonmechanism.

12. In a typevvritingmachine, a shittable vibratory ribbon mechanism comprising, as primary elements, both a f key operated member, and a shiftable member forvarying field or stripe of thribbon through which the types strike; a duplex-double-actelements, whereby repeated I ing pawl being provided on one of said primary elements, and

- jections being provided upon the other of said primary elements, whereby repeated operations of said key effect'alteruate shifts of the other primary element', anda second V by movement thereof in one direction to move the last-mentioned primary element to a ribbonisilencing position' from either position to which it has said key. .WALTER Witnesses:

FRANK A. Coon, 7 LYMAN D. BRoUoH'roN the Commissioner of Math.

cooperative teeth or pros.

E. BARNARD.

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