US1300379A

US1300379A - Fountain-pen.

Info

Publication number: US1300379A
Application number: US22560?18A
Authority: US
Inventors: Simon Greenfield
Original assignee: Individual
Current assignee: Individual
Publication date: 1919-04-15
Anticipated expiration: 1936-04-15

Description

S. GREENFIELD'.

' FOUNTAIN PEN.

' APPLICATION FILED MAR. 29, 1918.

1,300,379, 4 Patented Apr. 15, 1919.

WITNESS A TTOR/VEVS son ennnnrmnn, or NEW YORK, N. Y.

FOUNTAIN-PEN.

Specification of Letters Patent.

Patented Apr. 15, 1919..

Application filed March 29, 1918. Serial H0. 225,.

To all whom it may concern:

Be it known that I, SIMON GREENFIELD, a

citizen of the United States, residing at New York, in the county of New York and State of New York, have invented new and useful Improvements in FountaimPens, of which the following is a specification.

The subject-matter of this invention is fountain pens, and the principal object of the invention is to provide a fountain-pen capable of holding two different. colors of i of which a choice ma be made when it is desired to Write, andw ich is fed in such manner as to preclude any intermingling of the inks.

Another object of the invention is the provision of a fountain pen of this character having its parts so arranged that valves or closures adapted to operate by' gravity may be incorporated in the feeding parts in such manner that when the barrel is inclined to write with one color, the flow of "the second color will be automatically stopped.

With these objects in v1ew and others, the invention resides in the details of construction and in the arrangement and combination hereinafter described, defined in the claims, and shown in the accompanying drawings, forming a part of this specification, it being understood the cha ges in the precise embodiment of the inven ion herein disclosed may be made within the scope of what is claimed without departing from the spirit of the invention. 1

In the accompanying drawings':-Figure 1 is an enlarged longitudinal sectional view through my improved fountain pen, the upper end of the barrel being broken away.

Fi 2 is a cross sectional view, taken on the lme 2-2 of Fig. 1.

Fig. 3 is a similar view, taken on the line 33 of Fig. 1.

Fig. 4 is a still further enlarged frag-- mental sectional view, illustrating in particular the. employment of means for controlling the flow of the ink in the pen-holding? head.

ig. 5 is a cross sectional view, taken on the line 55 of Fig. 4.

Fig. 6 is an enlarged fragmental sectional view, showing the employment of means for controlling the flow of the ink in the feeding plugs.

With more particular reference to the accompanying drawings, the numeral 15 denotes the barrel portion of the pen with whic sides of the en-points in the usual way. In

which is formed an interior concentric barrel 16, in order to provide the longitudinal

concentric reservoirs

17 and 18 for holding the two difierent colors of ink. The lower ends of these barrels are open, and their concentric end walls are screw-threaded, the outer barrel 15 being preferably interiorly screw-threaded, as at 19,'while the inner barrel 16 is preferably exteriorly screw-threadwith the customary shape of the stem ends of pen-points for receiving the same in back to back position. Transversely through the cross partition 24, are provided the feed ducts 27 and 28, the former of which permits the inkto flowfrom the outer reservoir 17 into the cavity 25, while the latter provides a passage-way for the ink from the inner reservoir 18 to the'other cavity 26.

Inserted in the said

cavities

25 and 26 in 3 such size and form as to completely fill up said cavities liquid-tight, with the exception of small openings 33 and 34 extending longi-' tudinally between the pen-stems and the said lugs to provide suitable ducts through ii the ink may pass to the underneath Fig. 1, it wi lbe noted that the integral wall 35, which separates the

cavities

25 and 26,

serves as a means for holding the pens s aced from each other in back to back position so that the ink on one pen cannot intermingle withthe ink on the other pen. In-

this figure, also, it will be seen that the

pens

29 and 30 together with their

plugs

31 and 32 are inserted in their respective cavlties with their inner ends spaced from the cross partition 24 thereby forming ink chambers 36 and 37 in the upper ends of said cavities through which the ink must pass before flowing into the ducts 33 and 34. In this of the ink as before.

form of my invention, which does not include any valves or means for controlling positively the flow of the ink from the reservoirs to the pen-points, the relative rapidity of the flow depends partly u on the character of the ink employed, alt ough the flow may be controlled substantially by adjusting the positions of the pens and their plugs so as to increase or diminish the size of the chambers 36 and 37. But for all general practical purposes where a pen supplying two colors of ink is needed, it will be found that, owing to the relatively small diameter of the ducts 33 and 34 in proportion to their length, the ink will not flow so freely upon the upper pen as 30 as to drop from the nib thereof while the lower pen as 29 is being utilized in writing.

As a means of substantially cutting ofi the flow of ink from the upper pen when it is desired to write with the lower one, I may provide, as shown in Fig. 4, the cross partition 24 with two transverse plugs 38, each provided longitudinally along one side with a feed duct 39 to permit the passage Intermediate its length each plug is also provided with a transverse circular opening 40 opening into the feedduct 39. Seated in each opening 40 is'a ball valve 1, which is adapted to close communication through the feed duct 39, the wall of the duct 39 opposite the valve seat 40 being slightly cut away in arcuate form to accommodate a sector of the ball in order to completely close communication. In this connection it shouldbe noted that the seats 4.0 extend outwardly toward the circumference of the pen-holder from the said ducts 39, and that under this arrangement when the lower pen, assuming it to be 29 asbefore, is held in position for writing,

the ball controlling the feed therefor, will drop by gravity ermitting the passage of the ink, while the ball operating in the other plug, in dropping simultaneously, closes 'its duct against the passage of ink. Conversely, when the pen-holder is turned 1 around with the position of the pens re- 7 versed, the ball valves, falling under the influence of gravity, close the duct which feeds the pen 29 and opens the duct for feeding the now lower pen 30.

Instead of. seating the ball valves in the cross partition 24, I may provide as best shown in Fig. 6, the feeding plugs '31 and 32, preferably near their lower ends, with openings or seats as 42, in communication,

each with its re'spective feed duct as 33 and 34. In each. opening is seated a ball valve 41 as before, the same being adapted to close or open its feeding duct accordingly as the pen fed thereby is above or below. When "i at is contemplated using ink of a poor character in thefountain pen, this last method of controlling the flow 'of the ink is preouter longitudinal reservoir, a holding head formed with concentric flanges removably connected respectively with said concentric barrels and having individual ink ducts for said reservoirs, feeding lugs arran ed in said head longitudinally t ereof to in ividually receive and convey the ink from said ink ducts, and means combined with said holding head and said feeding plugs to receive and write with either color of ink without one color intermingling with the other.

2. In a fountain pen construction, the combination of concentric barrels formed spacedly to provide two concentric longitudinal ink reservoirs, a pen-holding head formed with concentric flanges removably connected respectively with said concentric barrels, individual ink ducts in said. head, and means combined with said head including separated writing nibs for individually receiving the-ink from said ink ducts.

3. In a fountain pen construction, the combination of concentric barrels formed spacedly to provide two concentric longitudinal ink reservoirs, a penholding head formed with concentric flanges removably connected respectively with said'concentric barrels, individual ink ducts in said head, means for controlling the flow of ink through said ducts, and means combined with said head including separated writing nibs for individually receiving the ink from said inkducts.

4. In a fountain pen capable of employing two colors of ink, concentric barrels spaced apart to provide two concentric longitudi-- having independent cavities one for each feeding duct to open into, and means engaged in said cavities to direct the ink therefrom without intermingling to separated writing nibs. v

5. In a fountain pen capable of employin two colors of ink, barrels. formed spaced apart .toiprovide two concentric longltudinal ink reservoirs, a pen-holding head formed with concentric flanges removably connected respectively with said concentric barrels and having a cross partition comprising an end closure for said barrels, said partition having independent ink ducts therethrough one for each reservoir; said head having independent cavities therein one for each feeding duct to open into, a feeding plug engaged in each cavity to receive and conduct the ink, a valve device combined with each feeding plug to control the flow of the ink, and means including sep- 10 arated oppositely disposed writing nibs whereby to write with the ink supplied through either feeding plug.

In testimony whereof, I have signed my name to this specification.

SIMON GREENFIELD.