US229980A

US229980A - Chaelbs h

Info

Publication number: US229980A
Authority: US
Publication date: 1880-07-13
Anticipated expiration: 1897-07-13

Description

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0.11. xv C. L. DOWNES.

Patented. July 13, 1880.

".PETERS, PHOTOLITMOGRAFNER. WASHINGTON. D. C4

(No Model.)

` Stylographio Fountain Pen.

UNITED STATES PATENT CEETCEO CHARLES H. DOWNES AND CHARLES L. DOWNES, OF JERSEY CITY, N. J.

STYL-OGRAPHIC FOUNTAIN-PEN.

SPECIFICATION forming part of Letters Patent No. 229,980, dated July 13, 1880.

Application led March 27, 1880. (No model.)

To all whom it may concern Be it known that we, CHARLEs H. DovvNEs and CHARLES L. DOWNES, both of Jersey City, in the county of Hudson and State of N ew Jersey, have invented certain new and useful lmprovements in Stylographic Fountain-Pens; and we do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the annexed drawings, making a part of this specification, and to the letters and figures of reference marked thereon.

. K Figure l is an enlarged diametrical section through a stylographic fountain-pen having our improvements applied to it. Figs. 2 and 3 show details ofthe air-tube highly magnified. Fig. 4. is an enlarged view of a point-section, shoting a short air-tube with our transverse air-inlet applied to it. Fig. 5 is a section of part of the handle of Fig. 4.

Similar letters of reference indicate corresponding parts.

This invention relates to stylographic fount. ain-pens having air-tubes combined with them for admitting air to facilitate the iiow of ink from the writing-points during the act of writing.

The nature of our invention consists, first, in a transverse or side air -inlet tube combined with the main or central air-tube in such manner that, while air can be freely admitted into the ink-receptacle at orl near the writingpoint, a very large amount of space is afforded for containing ink, said tube extending entirely ythrough the wall of the case and having two endl bearings therein, as will be hereinafter explained.

The invention consists, second, in combining with the upper or main tubular air-section and lower tubular needle-carrying section a short independent removable coupling-section having a much smaller bore than either of its terminal sections, for the purpose of excluding ink from the same.

In the annexed drawings, A designates the case or hollow pen-handle, which is designed to serve as a reservoir for writing-fluid. B is a cap, which is secured in any suitable manner at the upper end of the handle A. A' designates the point-section, which is screwed into the lower end of the handle A in the usual with a screw-threaded part, e, a collar, e', and Y a neck, e2, which latter receives tightly the upper end of a tube, G, which serves as the guide and receptacle for the stem of the needle J.

The tube G is held centrally in the section A by means of flanges n, one or more of which is perforated at i to form outlets for air that descends through tubes E, F, and G during the act of writing.

Between the i'langes a scores or notches j are made to allow a free flow of ink to the writing-point. The small-bore tube F prevents ink from working its way into the air-tube E.

The tube E communicates with the external air by means of the short transverse tube P,

above referred to, which in Fig. l is represented as located between the upper end ofthe handle A and the point-section A.

ln Fig. 4 the transverse tube P communicates with the external air through one side of the point-section A', and the air-tube is arranged wholly inside of this point-section and detachable with it from the handle portion A. In this latter arrangement the entire space in portion A is left free for containing ink.

In Fig. l the air-tube occupies a part of the ink-space ofthe portion A, and this tube is not detachable from the latter with the pointsection.

We do not consider it necessary to close the transverse inlet P when the pen is not in use, althoughin the case of Fig. 1, where this tube P passes through the side of handle portion A, a narrow slide might be used for closing said inlet.

Air escapes from the section G into the pointsection through the aperture t', (shown in Figs. 1, 3, and 4.) l

It will be seen that the short tube P is perforated transversely, so that when it is inserted through the Wall of the case A and upper section of the air-tube it forms a communication between the interior of this air-tube and the external air. TnbeP is below the upper closed end of the air-tube E, Fig. 1, and is the means for holding this latter tube in its place.

Having described our invention, we claiml. In a stylographic fountain-pen, the longitudinally and transverselyperforated air-inlet tube P, supported at both its ends by the wall of the case A, and passed through the cen- 'trally-arran ged air-tube. the latter being closed at its upper end, substantially as described.

2. In combination with the removable pointsection A of a stylographic fountain-pen and the centrally-arran ged air and needle-carrying tube G, the longitudinally and transversely perforated air-inlet tube l), as described.

3. In a stylographie fountain-pen, the com- CHARLES H. DOWNES. CEAS. L. .DOVVNES Witnesses:

JOHN C. HARING, GILBERT S. CLARK.