US848787A - Type-writing machine. - Google Patents

Description

PATENTED APR. 2, 1907,

F. x. WAGNER. TYPE WRITING MACHINE.

APPLICATION FILED DEG, 13, 1905.

I dis Att ovney UNITED STATES PATENT OFFIOE.- X

FRANZ X. 'AGNER, OF NEW YORK, X. Y., ASSIGXOR TO UXDERWOOD TYPE- Y WRITER COMPANY, OF NEW .YORK, N. Y.

JERSEY.

A CORPORATION OF NEW TYPE-WRITING MACHINE. I

Patented April '2, 1907.

Application filed December 13,1905. Serial No. 291,580.

invented certain new and useful Improvements in Type-\Vrrting Machines, of which the following is a specification.

. present improvements.

ted lines asconnected to the long-motion This invention relates to the ribbon-controlling devices of type-writing machines, and particularly to the mechanism in frontstrike and other visible-writing machines by which the ribbon is caused to cover and 'uncover the printing-point at each type-stroke.

The principal ob ect of my invention is to produce a simple and easily-applied mechanism for enabling the operator to bring into use either theupper or the lower color-band of a polychromatic ribbon.-

In carrying out In invention I employ in lace of a single rib on-vibrating lever, as lieretofore, two levers, which vibrate together at each type-stroke, one lever having a longer stroke than the other, and I provide shiftable means under the control of the operator for connecting. the ribbon-carrier to either one lever or the other, whereby the ribbon is given a long stroke from .normal position or a short stroke from normal position, so as to bring either one or'the other colorband into .use at the type-strokes. The shiftable means includes afinger-piece mounted upon the framework, which can rock the ribbon-carrier into engagement with either lever, the shifting mechanism not interfering with the up and down movements of the ribhon-carrier.

- In the accompanying drawings, Figure 1 is a sectional side elevation taken through the ribbon mechanism of an Underwood frontstrike writing-machine and embodying my The parts are shown in printing position. The platen is shown in lower-case position, from which it may be elevated to upper-case position together with the ribbon-vibrator and associated parts.

Fig. 2 is a perspective view of the two ribbon-vibrating levers, which are shown in the this view the parts are in normal ositions and the ribbon-carrier is shown in ll lines connected to the short-motion lever and 'in'dotevers up to the printing position.

lever. Fig. 4 is a plan of the ribbon-vibratmg mechanisni;

As usual in the Underwood machine, typebars 1, carrying'lower-case and upper-case types, strike rearwardly through a ribbon 4 against a platen 5, the latter mounted in a frame or carriage (not shown) which runs upon a rail 6. Said rail is shiftable up and down together with the platen-frame and platen to enable the different types to print.

At each type impression the ribbon is first vibrated up t0 cover the printing-point and then down to disclose the writing, these movements being effected by a carrier 7, which stands vertically in front of the platen and is guided loosely by a pair of cars 8 u on the vertical sides'of a type-guide 9. aid ribbon carrier may be actuated by either one orthe other of. two levers 10 11, which are pivoted together upon a single shoulderscrew 12, the latter threaded into a bracket 13, which is fastened upon the platen-shifting rail 6. Said levers have arms 14 15 extending upwardly from said pivot and having screws or wrists 16 17 to engage a single slot 18 in a rearwardly and. forwardly movable actuator 19, which reciprocates at the typestrokes, whereby said levers are vibrated together at each type-stroke. The arm 14 is considerably shorter than the arm 15, and

the ribbon-carrier is connected to the lever. 10, Fig. 1, it is given a short stroke, but when it is connected to the lever 11 as in dotted lines at Fig. 3, it is given a long stroke at the printing operation.

, The actuator 19 is in the form of a plate or bars, as usual. Each type-bar as it swings up; to the platen ushes back said universal-bar frame or 'tab e, together with the slotted plate or actuator 19, thereby vibrating both (Seen at Fig. 1.) Therear end. of said frame 21- is supported. by idle links 23 and is returned to" normal position by the usual means. (Not lug having the vertical slot 18 and secured and along its lower portion with a differentlymovements of the pin 29.

' tent 31-for detaining the shifter-bar at eith'er colored band 25, and in order to bring either band into use I provide means for swin ing the ribbon-carrier laterally between the fullline and dotted-line positions seen at Fig. 3, so asto connect with either the shortmovement lever or the long-movement lever 11. This lateral shifting of the vibrator is effected by using the ears 8 as fulcra, and it is so slight that'it does not interfere with the free upward and downward movements of the carrier. For shiftingsaid carrier laterally I provide u )on a fixed part of the framework 26 a shi ter-bar 27, having forks or a slotted member 28 extending down in rear-of the vibrator and bestriding a pin 29, which projects rearwardly from the ribbon-carrier. The forks stand vertically, so as not to interfere with the up and down By sliding the shifter-bar 27 to the left or right the forks are caused to' engage the pin 29 and vibrate i he carrier to either of the positionsseen at ig. 3. either of which is engageable by a spring-deend of its movement. The bar may be operated by a rock-shaft 33, having an upstanding arm 34 to engage a notch 35, formed in the end of the bar 27, so that by rocking said shaft the bar may be shifted. Upon the forward end of the shaft and over the keyboard of the machine Iprovide a two-armed lever 36, having keys 37 38, which may correspond in color -to the bands 24 upon the ribbon,

, sothat by de ressing'either keyits color of ribbon will be rought into use'. at Fig. 3 extends down between the levers 10 11 and is provided with op ositely-projecting pins 39 to engage slots or 'oles 40, formed in the ends of the levers.

Variations,-however, may be resorted to within the scope of the invention, and pertions of the improvements may be used without others.

Having thusdescribed my invention, I claim 1. Inatype-writim machine, the combination with types and a platen, of a sliding ribbon-carrier, a part which is reciprocated at the operation of the types, two. levers so connected .to said reciprocating-part as always to be vibrated thereby, and means for rocking'said ribbon-carrier sidewise into direct engagement with either of said levers; one of said levers being so mounted and conne'ctedas to give a longer stroke than the other lever to the-ribbon-vibrator. I

2. In a type-writing machine, the combi nation with types, of a ribbon-carrier, two

- levers mounted side by side uponcoincident axes, and extending to said carrier, a single device for vibrating said levers at the type- .Upon the bar are formed notches 30,

The carrier" strokes through unequal distances, and means for rocking said carrier so as to engage either of said levers to be operated thereby.

Ina type-writing machine the combination withtypes, of a ribbon-carrier, said carrier being movable to cover or uncover the printing-point, means for'rocking said carrier from side to side, and means cooperating with said carrier, when the latter is rocked in one direction, to give the carrier a short stroke, and means cooperating with said carrier. when it is rocked in-. the other direction, to give the carrier a long stroke, for covering the printing-point with the ribbon, so as to bring into use different widtlr wise portions of the ribbon:

4. In a type-writing machine, the combi .nation with types and a ribbon-carrier, of two levers mounted upon a single pivot, a slotted of said levers, at will.

5. The combination with types, of two levers, means for vibrating said levers simultaneously through unequal distances at the type-strokes, and a sliding ribbon-c arrier movable into direct engagement with either of said levers at will.

6'. The combination with types and a shift ing platen, of two levers, mounted to shift with the platen, means for vibrating said levers simultaneously through unequal dis- .for guiding said carrier for a sliding movement to cover and uncover the printingpoint, means foreflecting' a transverse rocking movement of said carrier, and unequallymoving devices with either of which said carrier mayconnect by means of its rocking movements, to cause said carrier to carry the ribbon unequal distances. over the printingpoint.

8. In a type-writing machine, the combination with types, of a stationary guide, a ribbon-carrier having means loosely engaging said guide to slide thereon to and from the printing-point, a member having a pin-and slot ngagementwithsaid ribbon-carrier,

and shiftable so as to rock said carrier sidewise, and unequally-vibrating levers with either of which said carriers may be engaged by means of such rocking movement and whereby the carrier may be moved different distances over the printingoint.

-9. In a type-writing 'mac-ine, the combination with types, and a shifting platen, of a part reciprocatedat the type-strokes,- a rib on-carrier, a finger-piece mounted upon the frame of the machine and having a loose connection to said ribbon-carrier whereby it may effect lateral movements thereof, means detaining said finger-piece in difiierent positions, and two levers shiftable with the platen and connected to said reciprocating part so as to be .operated simultaneously thereby; said finger-piece being capable of moving said carrier laterally into connection with either of'said levers. v

10. In a type-writing machine, the combination with types and a platen, of a part reciprocating at the type-strokes and having a slot, two levers pivoted together and having wrists engaging said slotat different oints,

a ribbon-carrier, a guide Which said r1bb.on-.

carrier loosely'engages, and a shifter mount- -ed upon the framework and having a loose connection with said carrier for shifting the same laterally so as to engage either of said levers.

11.- In a type-writing machine, the combination with types and aplaten shiftable to enable different types to print, of a frame or x rail shifting with the platen, two levers reciprocated' together at the type-strokes and shifting with said frame or rail, a ribbon-carrier, and means for shifting said ribbon-carrier laterally to connect with either ofsa id levers so as to be given either a short or a long stroke, and also so as to be shifted together with said frame or rail.

v 12. In a type-writing machine, the combination with types and a platen shiftable to.

'type-strokes, and a shifter mounted upon the framework of the machine and having a loose connection to said vibrator for effecting lateral movements thereof.

- FRANZ X. WAGNER.

Witnesses:

GEORGE WOHN, F. W. WAGNER.

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