US559422A - Fountain-pen - Google Patents

Description

(No Model.)

L.. E. WATERMAN. FOUNTAIN PEN.

No. 559,422.` Patented May 5, 1896.

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lJNrrED STATES ATENT trice..

LEYVIS E. VATERMA, OF BROOKLYN, NElV YORK.

SPECIFICATION forming part of Letters Patent No. 559,422, dated May 5, 1896.

` Application filed September 27, 1895. Serial No. 563,842. (No model.)

To all whom it may concern.s

Be it known that I, LEWIS E. WATERMAN, a citizen of the United States, residing in the city of Brooklyn, county of Kings, and State of New York, have made a new and useful invention in Fountain-Pens, of which the following is a specification.

' Myinvention relates to improved means for feeding and regulating the feed of the ink in fountain-pens-that is to say, of conducting the ink from the reservoir to the pen and supplying the proper quantity of air to the reservoir in its place.

rlhe object of my invention is to provide a feed-bar that will feed or conduct the ink from the reservoir to the pen through the nozzle in any desired quantity and without making contact with the inner channel or side of the nozzle, the feed-bar being provided with a closed channel or duct, preferably round and open only at the inner end and under the pen on the upper side and at the front. I attain these objects by the mechanism illustrated in the accompanying drawings, in whichl Figure l is a part sectional view showing all the parts of the pen in position. Fig. 2 is a part sectional and part side view of the feedbar. Fig. 3 is a part sectional and top view of the same. Fig. 4 is a part sectional view cut on the line X X, Fig. 2. Fig. 5 is a sectional view cut on the line X X', Fig. 2. Fig. G is a sectional view out on the line Y Y, Fig. 3. Figs. 7, 8, and 9 are detail views showing different stages of the manufacture of the feed-bar. Fig. 10 is a top view of the f ront end of the fountain-pen with the pen in stage of construction is shown in crosssecbored or otherwise made in supply the place of the ink drawn therefrom by the ssure E. An opening or scarf O is cut in the top of the duct under the pen, as shown at O, Figs. 2 and 6, to give access and contact of the ink to and with the latter.

Fig. 9 shows the` slit E2 in the upper side of the duct, made by the saw in cutting the capillary iissure E, as closed. This upper fissure or slit E2 may, however, be left open without avoiding my invention; but if itis left open it will receive ink, which will pass therethrough to the inside of the nozzle and, drying, will not only furnish Obstruction, but assist in grinding out the inside of the nozzle, interfere with the air-flow by drying in the fissure E2, thereby making the ink-ow irregular, and be otherwise objectionable. The capillary fissure E may be made without sawing through the upper side of the duct channel or passage, as by channeling, but it may be made much easier by sawing, as described, the slit E2 being afterward smoothly filled by cement or some suitable material. The duct or channel D, I prefer to make round in crosssection, not simply because it can be more easily bored out in that form, but because air-bubbles, which it is one of its functions to conduct up into the reservoir, thereby facilitating the ink-flow, will pass more readily through a round and unobstructed tubo than through a square one-that is, with less friction and liability to detention. The ink is conducted to the pen entirely by capillary action, working in and through the capillary fissure E, which conducts the ink down to the eXtreme lower end of the feedbar, where the IOO ing O and duct D, filling it from the bottom and up to the opening O in the pen. This reservoir, so iilling from the bottom, is fed by the capillary iissure E, which continuing to drav7 the ink from the reservoir R, as the air passes up through the duct D, fills the secondary reservoir R until the ink reaches and stops the opening Oin the pen, when the flow of the ink Will stop automatically. This automatic stoppage of the-ink-flow is caused by the filling of the aperture or opening O', through which air is supplied to the duet on its Way to the reservoir during the process of the transfer of the ink from the larger to the smaller reservoir, since the opening O is the only opening through which air can get into the duct D.

Vhen the pen is put in use by contact With the paper, the ink is presently drawn out and down from the secondary reservoir R' beloW the opening O, thus again opening the inlet to the air, and automatically facilitating the flow of ink to the pen as long as the ink in the secondary reservoir R does not extend as high as the opening O/; but the moment the penis taken from the paper the capillary fissures E and E', continuing to draw the ink from the reservoir or fountain R and to Iill the secondary reservoir R from the bottom upward, the IioW of the ink will be again stopped by the viilling of the air-inlet O, as before, and the ink will be thereby automatieally retained in the secondary reservoir R and under the pen in position for immediate use at any moment. The higher up on the pen the opening O is placed the larger will be the quantity of ink capable of being held in the secondary reservoir; but the opening O'must vbe so placed as to open a passage through the opening O into the duct D.

It is evident that by regulating the location and size of the opening O', the shape and size of the duct-channel D, the dimensions-n that is, the Width and depth-of the fissure E, the size of the secondary reservoir R', and even the stiffness of the pen P the flow of the ink may be controlled and gaged to any required extent and With the greatest deli' cacy.

It will be perceived that if the slit E2 is left open to receive the ink from the reservoir and the ink dust or deposit from the inside surface of the nozzle N this Will be likely to hang down here and there in irregular ways, Whether Wet or dry, into the duct-channel or airssupply duct D, or in the path of bubble movement, and thereby retard or arrest the air-bubbles on their Way to the reservoir R, and so interfere with the supply of inl; to the secondary reservoir R an d with the working of the pen.

I claim as my inventionl. A feed-bar F provided with the duet or channel D, fissure E, and opening O.

2. A feed-bar F provided With the duet or channel D, fissure E and opening O in combination with the pen l provided with the opening O.

3. 'A feed-bar F provided with the duct or channel D, fissures E and E/ and opening O in combination with the pen l provided With the opening O'.

LEWIS E. lVATERMAN.

`lVitnesses: JAMEs AgSKiL'roN,

EDWARD S. BERRALL.

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