US927177A - Fountain-pen. - Google Patents

Description

Patented July 6 JNVENTOR:

A. J. SGRITGHPIELD.

FOUNTAIN PEN.

APPLICATION FILED ocT.23, 190s,

WITNESSES UNITED STATES PATENT OEEIOE.

AMOS I. SORITCIIFIELD, OF JANEVlLLE, WISCONSIN, ASSIGNOR OF ONE-HALF TO DAVID HEENAN, OF JANESVILLE, WISCONSIN.

FOUNTAIN-PEN.

T o all 'whom it 'may concern:

Be it known that I, AMos J. SCRITCHFIELD, of Janesville, in the county of Itoclr, State of I/Visconsin, have invented certain new and useful Improvements in Fountain-Pens, of which the following is a specification.

The object of my invention is to produce improvements in fountain pens whereby the efficiency and reliability of the feed of ink from the reservoir to the pen and from the pen to the paper are augmented and the possibility of leakage or over-feeding is minimized to the extent of practical prevention.

In the accompanying drawing, which constitutes a part of this specification, Figure I is a side elevation of my pen complete in preferred form of embodiment, the cap being removed from the nib and applied to the opposite end of the holder as in use. Fig. II is a vertical section taken longitudinally of the nib and the plug, and illustrating the airduct and inlechannel. Fig. III is a section as on the line III-III of Fig. II. Fig. IV is a side elevation of the plug, detached, showing the air-duct of the sinuous form preferred as formed in the surface of the plug.

Referring to the numerals on the drawing, l indicates a barrel, which is preferably made of hard rubber and hollow to constitute an ink reservoir. At one end it is preferably provided with a reduced integral cylindrical headA 2, and at the opposite end with a nibholder 3 closing the otherwise open end of the barrel, to which it is threaded.

The member 8 is preferably provided with a cylindrical upper portion 4 of diameter corresponding to that of the head 2 for the accommodation of a cap 5, which is adapted to lit either over the nib-holder 3 or the head 2 as occasion requires.

6 indicates the nib that is carried in and projects from the holder 3 as usual.

All ofthe members above enumerated may be of the usual description common to fountain pens generally, and made of any suit able material preferred. My invention relates to the means provided in the nibholder 3 for the conduct of ink from the reservoir in the barrel to the nib 6. Such means preferably comprises a plug 8, which constitutes a perfect stopper for the mein- Patented July 6, 1909.

Serial No. 459,238.

ber 3 except for the provision made, preferably within the plug itself, for the ink feed.

The means provided for ink feed preferably consists of an air-duct 9 and ink channel 10, both communicating with the reservoir, and which, otherwise separated throughout their extent, unite in an outlet orifice 11 disposed opposite the aperture 12 of the nib 6. The orifice is preferably of oblong shape, sharply defined at its lower end, and gradually merging into the duct 9, where it and the duct communicate.

The air-duct is of minute size in cross-sea tion, preferably sinuous in direction, and preferably formed as a groove in the surface of the plug 8, as shown in Fig. IV. It is rendered complete as a duct through the assembling of the plug within and against the walls of the member 3 and the nib 6, respectively.

The ink channel, which preferably con* stitutes a co-axial longitudinal bore of the plug 8, is preferably of ample dimensions to accommodate a free flow of ink throughout its extent to its lower end where it communicates, through an abrupt turn and a reduced, diverted channel 14, with the ori lice 11.

In operation, ink descends through the channel or bore 10 through the orifice 11 to ,f

the nib G. Its descent from the reservoir is permitted by the influx of air through the air-duct 9, whose size is so minute as to permit inflow of air when the nib is in service but to preclude outflow of ink. Excess of ink feed is prevented by the abruptly diverted channel 14 and the reduced size of the orifice 11, through which the ink must pass in order to reach. the nib 6.

It is obvious that the relative dispositions of the ink-channel and air-duct may be varied, but those illustrated are preferred for their simplicity and. facility of manufacture, and of keeping the pen clean and in working order.

What I claim is:

1. In a fountain pen, the combination with a barrel, nib-holder, and nib, of a plug closed at the outer end and open at the inner end, an ink-channel, and an air-duct both communicating with a common orifice in the plug opposite the nib.

2. In a fountain pen, the combination with a barrel, nib-holder, and nib, of a plug provided with an inkel1annel and with a groove constituting an air-duet, and a. diverted inkchannel communicating With the ink-channel 5 aforesaid and terminating in en orifice corninunieating with the air-duet.

3. In a fountain pen, the combination with a barrel, nib-holder, and nib, of a plug provided With an ink-channel and with a groove 10 constituting an air-duet, and a diverted inkchannel communicating with the ink-channel aforesaid and terminating in an oblong orifice communicating with the air-duet.

In testimony whereof I have hereunto signed Iny name in the presence of two sub- 15 scribing Witnesses.

AMOS J. SCRITCHFIELD.

Witnesses:

ORVILLE S. MORSE, EDWIN F. CARPENTER.

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