US618385A

US618385A - Claes wm

Info

Publication number: US618385A
Authority: US
Publication date: 1899-01-24
Anticipated expiration: 1916-01-24

Description

No. 6|8,385. Patented lan. 24, |899.

C. W. BOMAN.

FUUNTAIN PEN.

(Abpuvacion med Nov. 11, 199s.)

(No Model.)

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NITED STATES PATENT rricn.

CLAES XVM. BOMAN, OF NEW YORK, N. Y., ASSIGNOR TO THE EAGLE PENCIL COMPANY, OF SAME PLACE.

FOUNTAIN-PEN.

SPECIFICATION forming part of Letters Patent No. 618,385, dated January 24, 1899.

Application led November 11, 1898. Serial No. 696,117. (No model.)

T all whom, it may concern:

Be it known that I, CLAES WVM. BOMAN, a citizen of the United States, and a resident of the city of New York, in the county and State of New York, have invented a new and useful Improvement inFountain-Pens, of which the following is a specification.

This invention relates to fountain=pens,and has particular reference to the device by which the ink is conducted from the reservoir and supplied to the pen.

The device consists of a plug composed, essentially, of a tube and a tongue having that portion of its length which fits within the tube substantially triangular in cross-section, so as to provide between it and the adjoining walls of the tube three passages or channels for the passage of ink from and air to the reservoir. One of these passages communicates through a slot in the top of the tongue with the under side of the pen, which lies upon and in contact with this portion of the tongue. The other passages open out through the front end of the tube. The plug is intended to fit in the front end of the resrevoir penholder or handle, and the pen is inserted between the handle or holder and the plug, with the front end of the tongue extending under the writing-point of the pen.

In the drawings accompanying and forming part of this specification, Figure lis a longitudinal central section of the completed pen. Fig. 2 is a perspective view of the plug detached. Figs. 3 and t are perspective views of the feeding-tongue and the tube detached from one another. Fig. 5 is a cross-section of the plug on line 5 5, Fig. 2.

The particular penholder A in connection with which my present invention is illustrated is that which is the subject of United States Letters Patent No. 599,592, granted to my assignee, the Eagle Pencil Company, on February 22, 1898; but the invention is of course applicable to other pen holders or handles as may be held in the usual way between `the vplug and the handle.

The plug consists of the tube C and the tongue D, both of which are preferably made of hard rubber. That portion of the tongue which fits in the tube is of substantially triangular form in crosssection and lls all the interior of the tube, save the three narrow spaces a b c, which form small longitudinal channels, through which ink and -air can pass from and to the ink-reservoir in the handle. The side channels band c extend through the tube C from end to end. The top channel d stops at the front shoulder m at the junction of that partof the tongue which fits in the tube with that pai-tnl of the tongue which eX- tends out in front of the tube and under the pen-point, this latter part n on its upper edge being flush with the periphery of the tube; but said channel a communicates with a slot a' formed in the part nof the tongue, by which the ink from the said channel can find its way out between the top of the tongue and the pen. This slot a may be extended back into the body of the tongue, which forms (in conjunction with the surrounding tube) the channel a, as shownin Figfa, and, indeed, this slot may be extended back to the rear end of the tongue instead of stopping short of that end, as in Fig. 3. To further facilitate the free action of the pen, a slot d2, registering with slot d', is formed in the front portion of the tube C. The notch n', cut in the front end of the tube C, has no function other than to furnish a guide by which the tongue may be accurately fitted to its place in the tube.

I find that With a device thus constructed the feed is measured, uniform, and certain and that no trouble is experienced from airbubbles.

What I claim herein as new, and desire to secure by Letters Patent, is-

l. An ink duct or feeder for fountain-pens consisting of a tube, and a feed-tongue having its forward portion n flush at top with the tube, and of triangular cross-section asto that part of it which fits within the tube,

forming` Within the tube three longitudinal channels, the top one of which communicates at front With t slot formed in that portion of the tongue which lies under and n Contact with the pen, substantially as hereinbefore set forth.

2. An inkduct or feeder for fountain-pens consisting of the tube C provided with slot a2, and the feed-tongue D, provided with slot a', and having that portion of it which fits 1o Within the tube triangular in cross-section, substantially as hereinbefore set forth.

In testimony whereof I have hereunto set my hand this 9th day of November, 1898. l

CLAES WM. BGMAN. Titnessesz SAMUEL KRAUS, P. H. BUCKMASTER.