US1532445A

US1532445A - Fountain pen

Info

Publication number: US1532445A
Application number: US635916A
Authority: US
Inventors: Claude H Schooley
Original assignee: Individual
Current assignee: Individual
Priority date: 1923-05-01
Filing date: 1923-05-01
Publication date: 1925-04-07
Anticipated expiration: 1942-04-07

Description

April 7, 192s. 'Y

c. H. scHooLEY FOUNTAI PEN Filed May l. 1923 Nmu Patented Api'. 7, i925.

CLAUDE H, SCHOOLEY,

PATENT `or Fica.

OF SIOUX CITYi IOWA.

FOUNTAIN PEN.

Application filed May 1,

T all whom t may concern.'

Be it known that I, CLAUDE H. SoHooL'nY,

a citizen of thev United. States, residing at chamber '13.

Sioux: Cit-y, in the countyof VVoo'dbury and. State of Iowa.. have-invented a new and usefulifountain Pen, of which the following is a specification.

This invention is` a self-filling fountain pen of the pump type. n

One of the ob'ects of the-invention is. to provide a fount-ain pen of the ycharacter mentioned, which will befof Simple const-ruction, made up of parts whichwill not readily wear out or be. impaired. in their' operation by the corrosive action of theink. A further object is to provide a fountain pen of maximumcapacity, with a fluid-tight reservoir. A. further object is to provide a pen so constructed that the filling operation willV clean out the channels of the pen structure, and also the ink so thaty a solid. color is maintained.. A further object is. to provide a fountain pen having means by which it may be carried upon the end of a chain orV other flexible support, in a manner which will notimpede itsy free manipulation in the hand while writing. y

' The invention will be hereinafter fully set forth and particularly. pointed out in the claims. l

In the .accompanying drawing:f

Figure 1 is a longitudinal sectionalview illustrating a fountain pen constructed in accordance with the invention.. Figure 2 is an enlarged sectional view illustrating the plunger piston. Figure 3 is a detail view lof one ofthe packing washers.` Figure 4 lis an enlarged view illustra-ting` the cap.V

Referring to the drawing, ldesignates the barrel ofthe pen. provided with the usual longitudinal bore.. internally threaded at the ends, as indicated .at `1`1 vand 12, respectively.. 'the bore contiguous to the threaded end 12y being enlarged to provide a The threaded portion 12 is complemental to the threaded nipple 14, of the pen-carrying section 15, which is provided with a feed device 16, andthe usual pen, which may-be of any preferred or desired construction.

The threads of the end 11 are complemental to the threaded nipple 17 of a plunger knob 18` which is'provided with a knurled portion 19. Secured within the knob 18is a plunger rod, constructed of a metalcore 2O surrounded byorencased within a non- 1923. serial no. 635,316.

corrosive covering 21such asvhard rubber. Said plunger rodfextends through the bores of a plurality of

packing washers

22 and 23. the washers 22 being preferablyfconstructed of hard vnon-corrosive material', such as hard rubber and externally threaded to engage the threads 11 of the barrel. rEhe washer 23 is of elastic material such as cork, and is preferably clamped between the, washers 22. The washers are each provided in one face with recesses 24. to be engaged by a Spanner wrench or vthe'- like., Said washers are so positioned that when the nipple 17 hasy been screwed home, it will bear against a washer 22. Y

The metal core of the plunger rod is xtended at oneY end beyond the covering 21, to provide a bearing` portion 25, upon which a piston 26 is slidably mounted. The bearing is somewhat longer than the piston 26, so as to permit of a slight longitudinal play. the end of the rod 2O being split as indicated at 27. to retain the piston in place. The bore of the piston through which the bearing portion 25 extends is; of somewhat'larger diameter than the diameter of the rod 2O` so as to provide a passageway through the piston, said passagewayV being provided with a valve seat 28, which is closed by the valve-like end 29 ofthe covering 21. when the piston moves, in one direction. By loosely mounting the piston upon the rod so that there can beV relative longitudinal play, said piston will move in synchronism with the vibrations impartedI to the barrel in writing and thereby cause ink to flow freely to the pen., u

, The penend of the barrel is covered by a main cap 30, having an internally threadedpportion 31` complemental to an externally threaded port-ion 32of the barrel. The outer end of said capis open` and contiguous to said end is provided with an internal annular shoulder 33, whichis complemental to an externa-l shoulder 34, of a swivel member 35, which extends through the open outer end of the can 30. Said swivel member is provided with suitable means, such as sockets 36.*to receive a clip 37, by means of which the can may be connected with a` chain or 'other flexible support. A

When it is desired to fill the pen. thecap is, of course, first removed. The knob 18 is then unscrewed and moved in a direction to withdraw the plunger rod. the

withdrawal ofsaid rod progresses, the split end 27 thereof engages the piston 26, and imparts corresponding movement thereto, until it abn-ts against the innermost washer 22. The' plunger rod is then forced'in- Wardly carrying with it the piston 26, the valve 29 engaging valve seat 28, a vacuum being created behind the piston during its return movement. At this time the pen end of the barrel is submerged in the inl; contained in a suitable reservoir. The instant thatY the air-tight joint is broken between the piston and the barrel, by movement of the piston into: the enlargement 13 f the bore of the barrel, atmospheric prec-- sure upon the ink immediately forces a sufficient quantity of said inl: into the pen to fill the barrel, YThe knob 18 is then screwed into place and the pen is ready for use. It will be noted in this connection, that'during the movement of the/piston 26 in the bore of the barrel after its withdrawal from the enlargement 13, the valve 29 uncovers the :bore through Vsaid piston, allowing air to freely escape therethrough. Thus Ythere is no air-cushion formed back of the piston to resist or impede its withdrawal to the extreme limit of its movement. During the return movement of the piston, the valve 2S) engages the seat 28, closing the air passage through the'piston, making an Vair tight joint, and thereb insuringY the formation Vof the necessary v icuum within the bore of the barrel. p

The advantages of the invention will be readily apparent.` For instance, it will be observed that the pump device is of exceedingly simple construction, Vand the metal portion of the rod 2O is so protected that it will not be re.' dily subjected to the corrosive action of the mk. The non-corrosive covering 2l, also serves to make an air-tight joint where the rod 20 passes through the

washers

22 and 23, and yet permits said rod to reciprocate smoothly through said washers with minimum wear, The

washers

22 and 23, insure a Huid-tight packing through which the plunger rod may be operated without leakage, and their positions may l e readily adjusted'at any time should they work loose. It will also be readily understood that the back and forth movement of the piston has the effect of cleaning out the channels at the open end of the device and to so agitate the ink that it is thoroughly mixed, so as to insure solid color. By providing the piston with a bore which is open during its withdrawal movement and having no enlargements on the plunger rod to limit outward movementthereof, said piston may be moved to the extreme end of the barrel, thereby exhausting practically all of the air in the bore when the piston is returned. In this manner a greater quantity of ink is stored within the barrel than is possible with the usual type of Maaate with the Vsame and the chain will not impede the use of the pen.

Having thus-explained the nature of the invention and described an operative manner of constructing and using the same, although witliout attempting to set forth all of the forms in which it may be made, or all of the forms of its use, what is claimed is l. A Vfountain pen comprising a vbarrel having a bore enlarged at one end, means for mounting the pen in the last mentioned end, a plunger rod mounted to reciprocate longitudinally within said barrel, andV a piston loosely mounted on said rod and normally positionedinfthe enlarged portion of the bore when the pen is in use,l whereby it may move in synchronism with vibrations imparted to the barrel in writing and thereby cause the ink to flow to the pen.

2. A fountain pen comprising a barrel having a bore enlarged at one end, means for'mounting the pen in the last mentioned end, a plunger rod mounted to reciprocate longitudinally within said bore and having a portion at one end reduced in diameter, a piston having a bore receiving the reduced end of said plunger rod and of larger diameter, said piston being shorter than said reduced portion and normally positioned in the enlarged portion ofthe bore when the pen is in use. whereby it may move in synchronism with vibrations imparted to the barrel in writing and thereby cause the ink to How to the pen.

8. A fountain pen comprising a barrel having a bore enlarged at one end, means for mounting the pen in the last mentioned end, a plunger rod mounted to reciprocate longitudinally within said barrel, said plunger rod having a reduced portion at one end, and a piston shorter than the reduced portion of said plunger and having a bore receiving said reduced end but of larger diameter, said bore being provided with a valve seat to receive the contiguous in-` creased-diameter portion of said plunger rod, said piston being normally positioned in the enlarged portion of the bore when the pen is in use, whereby it may move in synchronism with the vibrations imparted to the barrel in writing and thereby cause ink to {iew to the pen.

4. A fountain pen comprising a barrel having a bore enlarged at one end, means for mounting the pen in the last mentioned end, a plunger rod mountedv to reciprocate longitudinally within said barrel and having a split end9 and a piston loosely mounted on said rod, whereby it may move in synohronism With vibrations imparted to the barrel in Writing and thereby cause the ink to flow to the pen.

5. A fountain pen comprising a barrel having a bore enlarged at one end, means for mounting the pen in the last mentioned end7 a plunger rod mounted to reciprocate longitudinally Within said bore and having a portion at one end reduced in diameter, a piston having a bore receiving the reduced end of said plunger rod and of larger diameter, said piston being shorter than said reduced portion and normally positioned in the enlarged portion of the bore when the pen is in use, whereby it may move in synohronism with Vibrations imparted to the barrel in writing and thereby cause the ink to How to the pen, and a nonoorrosive covering for that portion of the plunger rod not engaged by the piston.

In testimony whereof I have hereunto Set my hand.

CLAUDE H. SCHOOLEY.