US926036A - Ribbon-positioning device for type-writers. - Google Patents

Description

G. TREIO.

RIBBON POSITIONING DEVICE FOR TYPE WRITERS.

APPLICATION FILED NOV. 5, 1908.

926,036. Patented June 22, 1909.

[NVENTOR Qu/Y/cr/rza Af/omey GUILLERMO TREJO, OF MEXICO, MEXICO.

RIBBON-POSITIONING. DE vice Fort, rrrn warrnn s Specification of Letters Patent.-

Application filed November 5, 1908.-

Pat nte L-I e 1909..

Serial No. 461,189,

ofa ribbon, or separate ribbons, over the line of writing.

The invention pertains more particularly to that class of typewriting machines in .which the ribbon is supported by a ribbon carrier movable to carry the ribbon into and out'of a position over the line of writing, this feature being generally. present'in what are known as visible-writing machines. In this type of machines, the ribbon is usually narrow and no definite provision is made for providing for a change in the position of the width of the ribbon relative to the line of writing. However, in some typewriter structures, there is provided means for adjusting the throwof the ribbon-carrier, thereby shifting the position of the ribbon with respect to the line ofwriting, but this shifting is one of the resulting efi'ects of adjustment for other purposes, for instance, the. adjusting of the esca ement mechanism. This kind of ribbon sh ft is not contemplated by the present invention as' the same is only incidental to the adjustment of other parts 'and isgenerallysuch as to place a articular rtlonoi the ribbon over the inc ftwritll Theinventlon claimed herein contema plates a, shift in the ribbon, for the purpose laci either one of'two parallel lines of t e rig on over the line of writing during the movement of the carrier, thereby perof, the use of duplex or multi lex ribbons, viz;, ribbons having different co ore extendingin parallelism lengthwise of the ribbon, and commonly termed multicolored-dribbongorribbons having the par-.

ailel phrtionsthereof, respectively, press copying and record. It is to this particular feature that the present invention re-. aw nd s he es -plied to the ribbon-carrier structure of the Ql i'cr yp wr insmac e it is to be crame: that t or se th,

drawings, and-particularly pointed out in f h p ended claims.

each of the views,Ei

appliedthereto;

other machines in which thegribbon is. movable to and from a position overthe line of writing by means of a ribbon-carrier;

The object of myinvention is, therefore to provide a structure in whichlairibbon may be accurately positioned inltwoor more pre-, determined positions on aribbon-carrier so, i as to present any particular; one of. separate, parallel portions of the ribbon oyerithe lin of writing withoutafi'ecting the noi'n ala f' justment of the ribbon-carrier or its movements. I

A further object is to provide a structure ofthis character'in which the shifting mech- 170' anism is supported solely, byjand' movable; with the ribbon-carrier. A

A further object is to provide a structure .in which the line of (adjustment is substan tially in the plane of the line of movement 175 of the ribbon.

A further object is to provide meansl for locking the ribbon-support of the carrier, at;

its points of adjustment, and supporting it against a liability of displacement from adjusted position during the movements ofgthe ribbon-carrier.

A further object is the provision of, a

To these and other ends thenature of which will be readily perceived as the invention is hereinafter disclosed, said inven-j tion consists'in the improved;construction and 'cornbination, of parts hereinafter fully described, illustrated in the accompanying In t'e drawings, in which similar refer ence characters indicate similar parts in re 1 is-a topplan view of .so much of the Oliver "typewriter structure as illustrates the-manner in which the invention isapplied. to the ribbon-carrier, the parts being 5 own in one of the adjusted positions. Fig. 2 is a similar view, the parts being shown in a difi'erent position. Fig. 3 is a side elevation of the ribboncarrier and a gortion of its support, and

showing, in si e elevation, the invention ,jAs heretofore set forth, the drawings iliustratethe invention 'as applied to. the 110. Oliver typewriting --.machine, the parts shown beingthe platen A; scale 3', indicator C. portions of the type-bar supporting structures, and the ribbon carrier D, the latter being the portion to which the present invention particularly pertains. The ribbon is indicated at E, being shown as of duplex form, viz., each half of the width of the ribbon has a different kind or color of ink applied thereto. The supports or spools.

for the ribbon are not shown, but it is to be understood that they are of the type of this particular machine and do not have their axial position varied during the movement of the ribbon.

The ribbon carrier D is mounted to swing toward and from the line-of writing, (the latter in the present case being on a line longitudinally of the platen approximately in the plane of the end of the indicator C), by means of the linked and d pivotally connected at one end to a plate (F, the opposite end of link (1 being pivoted to a portion of the frame, while the opposite end of link d is secured on a rock-shaft (2 adapted to be moved by the rod 01, the latter being con nected to the universal bar of the machine from which the carrier has itsmovements.

These connections'cause the plate d to' move in an approximately horizontal plane toward and from the platen, and are practically the same as in common use, with the exception I that the plate d is of less length and the ribbon eyes omitted. f

The attachment forming the present invention consists of a plate or ribbon-guide 5 having a U-shaped portion 6, the spaced ends of which are bent to form ribbon eyes 7, the shank or stem of the plate extending from theclosed end of the U-shaped portion.

The 'U-shaped portion 6 is provided with retaining flanges 9 adapted to retain saidportion against vertical movement and in contact with-the similar portion of plate d said contact, however, permitting of a sliding movement of plate 5 over the upper surface of plate d the flanges 9 and verticallyextending flanges 03 carried with plate d providing -'guidesto prevent a lateral movement of plate 56. The shank of the plate 5 is provided with a stud 10.

11 designates a cam-lever secured to plate d by a screw 12, said lever having a slot 13 formed therein, and being of a width to receive the stud 10, as shown in Figs. -1 and 2. The slot 13 is shaped 'to impart a reciprocating movement to the plate 6 through the medium of the stud 1O which rides in the slot, the extremes of the reciproeating movement being limited by the passage of the stud into the end portions of the slot as the lever is moved pivotally. The

main portion of the slot is eccentric with respect to the pivot point formed by screw 12, while one end of the slot, as at 13, (that which is in closest proximity to the pivot point), is formed substantially concentric with respect to said point, the length of this I is a so substantially concentric to the pivot polnt, thereby forming at that end of the slot asimilar lock to prevent variations in the adjusted position. The slotted portion of the lever is of a form approximating that of the slot 13, while the opposite end is formed'witha handle portion 14 by which the lever is manipulated.

The operation of the attachment is simple, consisting merely in moving the lever 11 to place the stud 10 in one end or the other of the slot 13, dependent upon which ribbon or ribbon section is to be positioned over the line of writing.

As will be readily understood, the movement of the plate 5 does not aflect the movements of .the operating mechanism, including plate tit, as the said plate, when the stud is positioned at an end of the slot, is the equivalent of afixed part of plate 0F, and therefore having all of its movements. The only effect produced by the adjustment of plate 6 is to change the distance of the ribbon from the line of writing when the carrier --is at rest or in inoperative position, the distance traversed by the ribbon to and from the line of writing being the same regardless of the positlon of plate 5. And, by reason of the fact that the lever is firmly 'positioned on theplate d and the fitting of the stud 10 in the slot 13, there is provided a non-yielding positioning connection between the plates at and 5 which can only be disturbed by a movement of the lever on its pivot, the ends of the slot preventing such action under the movements of the carrier.

The presence of the attachment does not prevent the use of a single color ribbon if desired, one advantage of the structure being that it would permit the use of two lines of ribbon surface in an obvious manner.

length of the main portion of the slot, and

The attachment is simple and efiicient in operation, does not require the use of spring surfaces for retaining the parts in position, and the fact that the axes of the lever pivot and the stud 10 are parallel with each other, together-with the size and form of the slot, form a positive lock readily manipulated without the use of any spring binding surfaces.

I claim as new-is:

Having thus described my invention, what 1. The combination with a shifta'ble rib- L bon-carrier, of a reciprocatory ribbon guide and the other with a slidably mounted on and movable with the carrier, and an ad usting device pivoted on the carrier and having a cam bearing that is slidable against the guide transversely of its direction of movement for shifting said guide.

The combination with a shiftable ribhon-carrier, of a ribbon guide adjustably mounted on and movable with the carrier, and an adjusting device for the guide pivotaillysmounted on the carrier, said guide and carrier being provided one with a cam slot projection engaged in the slot. t

3. The combination with a shiftable ribbon-carrier, of a reciprocatory ribbon guide mounted on and movable with the carrier, and an adjusting device for the guide pivotally mounted on the carrier in rear of said guide and having a slotdisposed eccentrically to its axis of rotation, said guide havinga prpjection engaged in the slot.

4. The combination with a ribbon-carrier for typewriting machines, said carrier having a fixed movement to and from the line of writing, of a positioning device for the ribbon, said device being supported by and movable with the carrier and comprising a ribbon-guide adjustable on the carrier in directions corresponding to that of the path of movement of the carrier, and a pivotallymounted lever for imparting movement to the guide, said lever and guide having complemental means for locking the guide at either extremejof its movement.

' 5-. The combination with a ribbon-carrier guide and extending into said slot, said slot bein formed at its ends to lock the guide and %ever against relative movement otherwise thaniby manipulation of the lever.

-6. The combination with a ribbon-carrier for typewriting machines, said carrier having a fixed movement to and from the line of writing, of a positioning device for the ribbon, said device being supported by and movable with the carrier and comprising a ribbon-guide adjustable on the carrier in directions'corresponding to that of the path of movement of the carrier, a pivoted lever having a cam-slot, and a stud carried by the guide and extending into said slot, said slot bein formed at its ends to lock the guide and fleveragainst relative movement otherwise than by manipulation of the lever, the

axes of the lever pivot and'of the stud being parallel with eac other.

In testimony whereof I hereunto afiix my signature in the presence of two witnesses."

JeMo. TREJO.

Witnesses: I

' JUAN D. VILLA, Josn LUz GARCIA,

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