US1433194A - Date-printing mechanism for writing adding machines - Google Patents

Description

H. A. FOOTH'ORAP. DATE PRINTING MECHANISM FOR WRITING ADDING MACHINES.- APPLICATION HLED DEC 31, 1920.

1,433,194; Patented 0015.24, 1922.

2 SHEETSSHEET l- H .v A.. FOOTHORAP. DATE PRINTING MECHANISM FOR WRITING ADDING MACHINES.

APPLICATION FILED DEC 31., I920.

Patented Oct. 24, 1922.

p UNITED STATES HARRY' RTHUR roorntonnr, or nnnnrsnnnc, rnnnsrnvnn'rn, assrenoa ro ELLIOTT-FISHER COMPANY, A CORPORATION or DELAWARE.

DATE-PRINTING MECHANISM FOR WRITING ADDING MACHINES.

Application filed December 31, 1920. Serial No. 484,249.

To all whom it may concern:

Be it known that HARRY A. FooTHoRAP, a citizen of the United States, residing at Harrisburg, in the county of Dauphin and State of Pennsylvania, has invented certain new and useful Improvements in Date-Printing Wechanism for lVriting Adding Machines, of which the following is a specification, reference being had therein to the accompanying drawing. 7 1

This invention relates to date printing mechanism for typewriting machines.

The object of the invention is to equip a typewriter, more particularly one of the flat platen class, with a mechanism, distinct from the usual type arms, for printing a date or other data by a single stroke of the hand to save the time usually expended in the repetition of date writing or the typewriting of similar data which, in a particular line of work, may call for frequent repetition.

To the accomplishment of this object, one

embodiment of the invention resides in the structure illustrated in the accompanying drawings, in which,

Figure 1 is a plan view of a flat platen typewriter equipped with my invention and having certain parts broken away.

Figure 2 is a side elevation of the machine.

Figure 3 is a front elevation with parts broken away and others in section.

Figure 4 is a detailed sectional view of the date printing mechanism. I

Figure 5 is a plan View of the ribbon guide associated with the date printing mechanism.

The machine illustrated as equipped with my invention, is what is known as an Elliott- Fisher machine. This machine includes a flat platen 1 traversed longitudinally by a line space frame 2 having front and rear guides 3 and 4 upon which travels transversely of the platen, a carriage 5. The carriage 5 is equipped with the usual printing mechanism including a type segment 6 upon which are groupedthe type bars 7 operated from keys 8. The illustration of this'type bar printing mechanism is fragmentary because it is well understood in the art and is broadly distinguishable for the present purpose as the primary printing mechanism of the machine. The usual ribbon spools 9 are mounted at opposite ends of the carriage and from one to the other of these spools a ribbon 10is suitably guided in a path which presents a portion of the ribbon at the common prlnting point 11 of the type bars.

In accordance with the present invention an auxiliary printing mechanism separate and distinct from the usual type arms. or primary printing mechanism, is mounted at the left hand end of the machine as indi cated at 12. This printing mechanism in the illustrated embodiment is of ordinary construction, being the well known dating stamp, including printing wheels 13 having peripheral printing characters and the usual shank 14 which, in this instance, is pivotally secured at its upper end, as indicated at 15, to the front end of what may be termed a supplemental or auxiliary key lever 16 extended across the end of the carriage. The lever 16 is pivoted at its rear end 17 and at its front end is provided with a supplemental printing key 18 located at the front of the machine and adjacent to the key board. The front end of the lever 16 moves within a suitable guide 19.

Normally, the date printing mechanism assumes the elevated position shown in Figure 2, but maybe presented to the work sheet by a blow upon the key 18 in an obvious manner. The date printing is designed to be effected through the medium of the ribbon of the typewriter, as the inking medium, and for this reason the machine is equipped with the special ribbon guide 20 clearly shown in Figures 1 and 5. This guide is preferably of metal. and is formed with a printing aperture 2]. directly above which the date printing mechanism is located. At opposite sides of the aperture 211.

are formed slits 22 and 23 through which the ribbon is threaded as it comes across the front of the machine, so as to present a section of the ribbon under the date printing mechanism and in position to serve as the inking means for the latter. From the slit 23 the ribbon is led around opposite edges of the guide to return it to a position in line with the adjacent spool, to which it is guided as shown. y meansof the guide 20 a portion of the ribbon will be seen to have been carried be yond one end of the carriage to serve the date printing mechanism, without in any way affecting the normal feed of the ribbon which constantly presents new portions of the latter in position for use.

While I have shown and: described the auxiliary printing mechanismas a date printer, it must be understood thatuin the broader aspects of the invention the specific character of this printing mechanism and the character of data printed thereby are not material, andiI therefore reserve the right to effect such modifications and variations of the illustrated structure *as' may be 'comprehended Within the scope of the appended claims. a

W'hatelI claim'fis irsu i 4 i 1. The:v combination with: a s i t ypewriting inachinepinclnding a movable carriage, type bars" and inkingribbon, of a secondary printing mechanism including a :key lever mounted atmneendof thecarriage, printing mech-I anism married by the lever; and anfextensionv guide for the-iribbong said guide be? ing alocated aat the iend of'ithe carriagei'to guldieithe' ribbon .unde'r' theisecondaryiprintu ing mechanism and :to' support thel ribbon i at 1 2. The combination with a typewriting machine, including a n'iovablecarriage, type bars and an inking ribbon,"of a secondary printing mechanismlocated beyond one end of thecarriageiand-fiineluding a key lever and a printing device carried thereby, a pair of ribbon spools mounted within the length of the carriage, means for guiding the rib- Y bon from said spools past the printing point of the type bars""and an extension ribbon guide" for guiding the ribbon beyond one 'end otthe' calriage in cooperative relatiorrto'the secondary" printing :inecha nis1n;

In testimony whereof I hereunto affix my signature in the presence of two witnesses? HARRY:ARTHURTUOTHORAR

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