US747948A - Fountain-pen. - Google Patents

Description

PATENTEDDEa 29, 190s.

l WL E., oUsHMAN.

`FOUNTAIN PEN. .-PPLIOTIQKVI'ILED MAY 5, I1902.

ANo Holm..

oms mans co. moroumo.. msnmmo No. 747,948.v

UNITED STATES Patented December 29,1903.

PATENT OFFICE.

WILLIAM F. CUSHMAN, OF BOSTON,.MASSACHUSETTS FOUNTAIN-PEN.

SPECIFICATION forming part of Letters Peteur Ne. 747,948, 'aerea December 29, 1903.

Application tiled May 5, 1902. Serial No. 105,891. (No model.)

To all whom it may concern.: n

Be it known that I, WILLIAMF. CUSHMAN, of Boston, in the county of Suiolk and State of Massachusetts, have invented certain new and useful Improvements in Fountain-Pens, of which the following is a specification.

This invention has relation to fountainpens, and has for its object to provide certain improvements therein for the purpose of insuring the pen against leakage'when carried end of the spindle projects beyond the barrel converges toward the front of the pen, there` and is threaded for attachment to the head or knob b', by which it may be projected or. re-

tracted.

c indicates a sleeve which is titted slidingly upon the rear end of the barrel'and which is in threaded engagement with the head or knob b', so as to cover the rear end of the spindle when the latter is retracted, as shown in Fig. l. The rear end of the barrel is closed by a non-threaded washer d, bearing against a shoulder a in the interior of the barrel, a sleeve d', of cork treated with paraffin, and an exteriorly-threaded Washer d2, screwed into the end of the barrel. The sleeve d forms a packing which permits the stem b to slide without the escape of ink.

On the end of the stem b is secured the pen e, which is held in place by the sleeve e'. The

conduits for supplying ink to the pen are shown at e2.

The bore or ink-receptacle a2 in the barrel being a shoulder a3 at the end of the barrel, in which the sleeve e tightly ts when the stem is projected, as shown in Fig. 2. The extremity of the barrel is interiorly beveled, as at 0.4, and is provided with the external threads a5. It will be observed from Fig. 3

that the end of the barrel is externally tapered, so that it may be grasped by the tingers immediately in the rear of the threads a5.

The cap is shown at fand is adapted to fit either upon the head b' of the stem or upon the end of the barrel, as shown in Fig. l. For this purpose it is provided near its closed end f with internal threads f2 to engage with the threads a5. There is also driven into the end of the cap a plug or valve f3, which is beveled complementally to the bevel a4 on the barrel. The end of the plug is so related to the screw-threads f2 that when the capis screwed on the barrel the end walls of the barrel are tightly wedged between the plug and the screw-threads f2, so as to prevent the splitting of the barrel and to absolutely preclude the liability of ink escaping when the cap is on the pen. The said cap is provided with the elongatedbody f, which covers `the tapering portion a6 of the barrel.

In the plug f3 is driven a pin f6, which abuts against the end of the stern when the latter is retracted and the cap is placed upon the barrel and prevents the stem from being moved so as to injure the Ypen e.

PreferablyA the sleeve c and the cap fare of the same internal diameter, so that when the cap is placed upon the head b' of the stem one appears to be a continuation-of the other, and the device thus presents a neat and attractive appearance.

Having thus explained the nature of the 'invention and described a wayof constructing and using the same, although without attempting -to set-1 forth all of the forms in which it may be made or all of the modes of its use, I declare that what I claim isl. A fountain-pen comprising a barrel portion having a screw-thread at one end, the

said end being beveled, a cap provided with a threaded portion, and a valve adapted to be driven within the cap, said valve being provided -with a beveled portion, whereby when the cap is screwed into position upon the barrel the beveled faces of the barrel and the valve will form a tight joint.

`A fountain-pen comprising a tapered barrel portion the end of which is beveled, the said beveled end being exteriorly threaded, a cap provided with an elongated body `prtion adapted to cover thesaidA tapered portion of the barrel and having also an interior-threaded portion, and a valve tightly seated within the said cap, the said valve having its front portion beveled, whereby when the cap is screwed into position upon the barrel portion, the beveled faces of the valve and barrel will form a tight joint.

3. A fountain-pen comprising a tapered barrel portion exteriorly threaded at one end and interiorly threaded at the other end, theV end of the eXteriorly-threaded portion being beveled, a sleeve adapted to slide upon said barrel, a knob having a threaded engagement with the sleeve, said knob having an open-- ing through it which is partially threaded, a stem having engagement with the threaded portion of the knob, a cap having an exteriorly-threaded portion adapted to engage with the eXteriorly-threaded portion of the barrel, a valve tightly fitted within the said cap at its inner portion, the said valve being provided with a beveled face, adapted to tightly contact with the beveled end of the barrel when the cap is screwed upon the barrel, a pin extending through Said valve, the length of said pin being such that when the cap is placed upon the knob at the end of the barrel the pin will be extended within the knob-opening, and when the cap is placed upon the beveled end of the barrel the pin will abut against the said stem.

In testimony whereof I have afxed my signature in presence of two witnesses.

WILLIAM F. CUSHMAN.

Witnesses:

M. B. MAY, GEORGE PEZZETTI.

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