US787152A

US787152A - Self-filling fountain-pen.

Info

Publication number: US787152A
Application number: US23343604A
Authority: US
Inventors: John T Davison
Original assignee: Individual
Current assignee: Individual
Priority date: 1904-11-19
Filing date: 1904-11-19
Publication date: 1905-04-11
Anticipated expiration: 1922-04-11

Description

No. 787,152. FATENTED AFR.11, 1905. J. T. DAVISGN.

SELF FILLING FOUNTAIN PEN.

APPLICATION .FILED NOV. 19, 1904.

@un/hmz oo e o 511 vente@ gig/125m; 51,* ma.

Patented April 11, l 905.

UNTTeD STATES PATENT OFFICE,

JOHN T. DAVISON, OF BROOKLYN, NICl'V YORK.

SELF-FILLING FOUNTAIN-PEN.

SPECIFICATION forming part of Letters Patent No. 787,152, dated April 11, 1905.

Application letl November 19,1904. Serial No. 233,436.

To /r// /r/m/l/rv if 71ml/ collec/11:

Be it known that l, Jonx T. Ylhvrsox, a citizen of the United States, residing in the boroughof Brooklyn, county of Kings, and State of New York, have invented certain new and useful Improvements in Self-Filling Fountain-Pens, of which the Vfollowing is a specilication.

Ally present invention relates to improvements in fountain-pens` and more particularly to that class of fountain-pensknown selffilling fountain-pens.

'l`he object of my invention is to provide an improved fountain-pen of this specific class which will be simple in construction` durable, and effective in operation.

lleretofore in the making of self-filling fountain-pens it has been customary to 4employ a flexible reservoir, which is compressed to expel air therefrom when it is desired to lill the pen with ink, the pen then being' inserted in a body of inl( and the reservoir being allowed to expand, drawing the ink into the same. ln some instances the reservoir has been compressed by hand, while in others devices have been contrived Vfor the purpose of mechanically compressing the reservoir.

'lhe object of my invention is to provide an improvement on this latterclass of compressing devices wherein a very simple device is employed for the purpose of creating an equal pressure throughout the entire length of the reservoir. Such a device is clearlyshown in the acconn)anying drawings and described in the following specification, in both of which like reference-numerals refer to like parts.

in said drawings` Figure 1 is a transverse section through a fountain-pen embodying my improved self-filling mechanism, showing the parts in a position of rest; and Fig. 2 is a similar section, slightly enlarged, with the protect-ingrap of the pen removed` showing the parts in operated position.

Referring now in detail to the drawings, l represents the casing of a Yfountain-pen embodying my invention, carrying at its forward end the pen 2, seated ina plug 3, carrying a flexible reservoir l of suitable length, lying longittnlinally within the casing 1. At

the end of the casing 1 opposite to the penpoint Q the diameter of the casingis decreased to receive a tubular wedge-plug 5, forming a seat for a press-button (S, with a shank ti' sliding in said plug The shank t3 has seated in its inner end a spring-rod T. extending upwardly and then toward pen Q, abutting at its opposite end the end of the plug 3 and resting on a retaining-ring l1 for retaining reservoir on plug 2S and for preventing the end of rod T from punctnring reservoir l. Suitably secured to the spring-rod T is an equalizing compressor-plate 8, resting against the wall of the reservoir l.

i) is a protecting-cap threaded upon the end of the casing Vl over the button 6 to prevent access of dust and other foreign matter into the easing l past the plug and to prevent, on the other hand,' any leakage which might occur in the reservoir 4 from escaping from the casing, and. furthermore, to prevent accidental or unintended movement of the button 43.

l() is a customary protecting-cap for the pen-point, which is inserted over the button end of the pen when the pen is in use.

The device described is operated as follows: ll'hen it is desired to refill the pen, the caps 10 and t) are removed and the button (5 depressed with the thumb or linger of the operator bowing the spring-rod T, forcing the equaliZing-plate S against the reservoir 4 to create an even pressure on said reservoir l throughout its length and to completely deflate the same. 'lhe pen-point is then inserted in a body of ink, the button (S released, allowing rod 7 to resume its straightened or normal position, permitting the reservoir l, by reason of the elasticity of its wall, to resume its extended shape, and thereby creating a suction through the mouth of the reservoir, which will draw ink past the pen-point 2 and into the reservoir -t until thc latter is filled.

f The plug 5 being' held in the casing l by friction rather than b v means of screw-threads is removed therefrom by a pull with possibly a slight twist. This obviates the tendency of the spring-rod T and the reservoir 1 to become entangled and twisted upon revolving the plug 5 to remove the same were the same screw-threatled in casing l.

CIJ

IOO

Having thus described my invention, tbe following is what l claim as new therein and desire to secure by Letters Patent:

l. A fountain-pen, comprising a casing, a pen-plug seated in tbe end of said casing, a ilexible reservoir mounted on said plug, a press-button at the opposite end of said casing` a spring-rod seated in said press-button and abutting' said pen-plug, and an equalizing-plate carried b y said spring-rod and resting against tbe wall of said reservoir.

2. A fountain-pen, comprising a casing, a pen-plug, and a exible reservoir connected to said pen-plug, a press-button seated in said casing, a spring-rod seated in said press-button, means preventing movement of said rod longitudinally,and an equaliZing-plate carried by said rod and resting against the wall of said reservoir.

3. A fountain-pen, comprising a casing, a pen-plug, and a flexible reservoir connected to said penplug, a spring-rod mounted between the casing and tbe reservoir, an equaliZing-plate Carried by tbe spring-rod, and means for bowing the spring-rod for forcing said equaliZing-plate against the reservoir to deflate thesame.

4. A fountain-pen, comprising a easing, a pen-plug, a leXible reservoir connected to said pen-plug, a spring-rod mounted between the casing and` reservoir, means preventing longitudinal movement of said rod, a pressbutton connected to said' rod, and an equalizing-plateJ carried by the spring-rod and bearing against tbe wall of tbe reservoir.

5. A fountain-pen, comprising a easing. a pen-plug, and a flexible reservoir connected to said pen-plug, in combination with a plug friotionally seated in said casing, a button sliding in said plug, a spring-rod mounted between tbe casing and the reservoir and seated in said button, an equalizing-plate carried by the spring-rod, and means for bowing the springrod to forceA said equalizing plate against the reservoir to deflate the same.

JOHN T. DAvlsoNl Witnesses:

SAMUEL J. HOEXTER, HARRY A. KNIGHT.