US855559A - Inking-ribbon for type-writing machines. - Google Patents

Description

No. 855,559. PATBNTED JUNE 4.1907. M. H. GHAPIN.

INKING RIBBON FOB. TYPE WRITING MACHINES.

APPLICATION IILI ID OOT.9, 1905.

WITNEEEEE. INVENTUR.

5 H15 ATTORNEY UNITED STATES PATENT OFFICE.

MURRAY H. CHAPIN, OF BRIDGEPORT, CONNECTICUT, ASSIGNOR TO UNION TYPEVVRITER COMPANY, OF JERSEY CITY, NEW JERSEY, A CORPORA- TION OF NEW JERSEY.

lNKlNG-RIBBON FOR TYPE-WRITING MACHINES.

Specification of Letters Patent.

Patented June 4, 1907.

Application filed October 9,1905. Serial No. 281,957.

' new and useful Improvements in Inking- Ribbons for Type-Writing Machines, of which the following is a specification.

My invention relates to inking ribbons for typewriting and like machines, and more particularly to inking ribbons in which the ribbon is divided into inking fields of different colors or characteristics. In certain ribbons of this character heretofore employed the different color fields were contiguous one to another; one color. field commencing where the other left off, and in consequence the ink of one field would run into and blend, with that of the other field,.especially at the vicinity of the meeting edges, oftenin this manner rendering the ribbon unsalable even before it left the factory. In such prior ribbons, where the edges of the different fields are in contact, the different inks have a marked tendency to absorb each other, which results in one inkextending comparatively far into the field of the other ink, thus largely destroying its color values;

The object of my invention is to overcome the above objections and to provide ribbons in which the liability of the ink to flow from one ink field of the ribbon into another is wholly avoided or reduced to a minimum.

To the ab ve and other ends which will hereinafter appear, my invention consists of an ink ribbon constructed in the manner hereinafter described and pointed out in the applinded claim.

' the accompanying drawing, which shows one form of my inventionFigure 1 is an enlarged face View of a piece of .ribbon made in accordance with my invention, and

Fig. 2 is a transverse sectional view of the same.

The ribbon in the resent instance is of uniform weave or thic ess throughout and is shown as divided into two adjacent inking fields, 1 and 2, which are of different colors or characteristics, such as red'and black, purple and black, or copying ribbon in one field and record ribbon in the other field.-

Thus it may be assumed that the field 1 is such that it will roduce a black imprint and the field 2 such tliat it will produce a red i1nprint. These two fields are parallel and extend longitudinally of the ribbon but they are separated by an intermediate portion or strip'3 which is uninked, so that the two ink fields 1 and 2 are not contiguous or, in contact. By this construction the ink of one field will not by capillary attraction or ab' sorption run intothe ink of the other field. The width of the uninked strip 3 is so small that it does not take ap reciably from the effective width of the rib on, or the inking surfaces thereof; nevertheless as has been found in practice it is sufficient to keep the coloring matter of one field from gettingover into and mixing with the coloring matter of .the adjacent field to the detriment of the colors.

By dividing the ink fields in the manner described, there is no addition whatever at any place to the thickness of the ribbon, the ribbon as a whole being the usual fabric of uniform weave and thickness throughout. In makingthe ribbons, the fields or sections 1 and 2 are impregnated with the or coloring matter in the customary or any suitable way, but care is taken not to ink the intermediate portion or section 3, which should be left plain.

' It should be understood that any suitable number of inking fields may be employed on each ribbon, as two, three or four; that the difierent fields may be of difierent colors, or the ribbon may be made up with a record field, a co ying field and a red or other colored fiel j or, the diflieient ink fields may be merely of difierent colors and all copying or record.

What I claim as new anddesire to secure by Letters Patent, is

1 1. An inking ribbon of uniform thickness throughout and having longitudinally extending inking fields of different characteristics and having also an intermediate "longitudinally extending uninked portion separating said inking fields.

2. An inking ribbon of uniform thicknessthroughout and hearing longitudinally ex- Si ned at Bridgeport, in the county of tending inking fields of different characteristics and having also an intermediate longiday of October, A. D. 1905.

tudinally extending uninked portion separat- I MURRAY H. CHAPIN. 5 ing said inking fields; said uninked portion I Witnesses v being of the same thickness and weave as the KATHERINE M-. FARRELL,

inking fields of the ribbon. .HELEN MoseoW TL.

Fair 'eld, and State of Connecticut this 4th

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