US1180466A - Type-writer. - Google Patents

Description

E. J. BARKER.

TYPE WRITER.

- APPLICATION FILED APR.2, 1914.

Patented Apr. 25,1916.

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ENGLAND JI'. JBAJER, OF CHICAGO, ILLINOIS.

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Specification ofJLetters Patent.

Patented Apr. 25, IQIF.

To all whom it may concern.-

Be it lmown that I, ENGLAND .I. BARKER, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented new and useful Improvements in Type-Writers, of which the following is a full, clear, and exact description.

My invention relates to improvements in typewriters, and particularly to means for insuring the registration of the original and carbon copies with one another.

The object of my invention is to accomplish this registration in a simple and economical manner involving a slight change in, or an addition to the rotary platen, and the use of a specially perforated paper in connection therewith, whereby the original and manifold sheets are prevented from moving longitudinally or laterally independently of one another, and whereby, when the original and manifold sheets have corresponding printed forms on them, or related forms the impressions from the type will always be in proper position in the forms of each sheet. This I accomplish by the means hereinafter fully set forth and as particularly pointed out in the claim.

In the drawings: Figure 1 is a longitudinal vertical section through the upper part of a typewriting machine embodying my improvements. Fig. 2 is a plan view of the same. Fig. 3 is a perspective view of a fragment of the platen showing my improvements.

Referring to the drawings, A represents the rotary platen of a typewriting machine provided with suitable journals that are journaled in suitable open or closed bearings (it does not make any difference in so far as this invention is concerned) in the end rails of the reciprocable carrier 18. Near each end the platen is surrounded by a very thin band C, which is, preferably, flat and made of any suitable material, and is pro vided with a circumferential series of spurs c, which, preferably, correspond in shape and are an equal distance apart. These spurs are, preferably, round, or of any other suitable shape, and the band C from which they project fits snugly upon and is secured to the platen either by a small screw 6 the head of which, when screwed home, is flush with the outer surface of the band, or in any other suitable manner. If desired, this band may be of highly tempered steel and split at a suitable point along its length, and expanded When put on the platen, so that it would clamp itself securely in any position in which it might be placed on the platen. One of these bands is adjustable longitudinally on the platen, and in order to permit this, I provide said platen with a longitudinally disposed series of screwholes a.

The paper strips 1, 2 and 3 used in connection with a typewriting machine embodying my invention are provided with a longitudinal series of perforations 4, near each longitudinal or side edge thereof, and when the original and manifolding sheets are brought together and placed in proper relative position in which it is desired to run them through the machine the perforations of each sheet will register with and be open to the corresponding perforations in the other sheets. While I much prefer to perforate the paper, such perforations may be omitted. When the perforated strips are fed to the machine in this position and the spurs of the platen are made to enter and extend through the perforations of the sheets, thus, as the distance between the spurs is the same as that between the perforations, and, as in the ordinary typewriter, in connection with which my improvements are made, the paper is in contact with the platen for about two-thirds of its circumference, the sheets must absolutely register with one another.

Incidentally, my improvements insure a positive feed to the platen, and where said strips of paper are fed to the platen from rolls, it is impossible for one sheet of aper to slip longitudinally by reason of the greater tension on one roll than on the others or for any other reason, and thus get out of register with the other sheets. The sheets that would ordinarily be fed to a typewriting machine would be about as wide as the platen is long and the perforations near its side edges would be engaged by the spurs 'when'in .position nearest the ends of the platen. When the width of the paper is so much less than the length of the platen that the spurs,'when in their farthest position, would not engage the perforations then one of the bands of supports for the spurs could be moved nearer the center of the platen until in position to engage the with a series of equi-distant outwardly pro: jecting radial spurs rigid and permanent 15 with said band, and adapted to engage and penetrate the side margins of paper sheets placed on said laten.

In witness w ereof, I have hereunto set my hand and seal this 25th day of March, 20 1914.

ENGLAND J. BARKER.

Witnesses:

FRANK D. THOMASON, FLORENCE MITCHELL.

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