US1381332A

US1381332A - Self-filling fountain-pen

Info

Publication number: US1381332A
Application number: US385445A
Authority: US
Inventors: Paul H Qualmann
Original assignee: Individual
Current assignee: Individual
Priority date: 1920-06-01
Filing date: 1920-06-01
Publication date: 1921-06-14
Anticipated expiration: 1938-06-14

Description

P. H. QUALIVIANN.

SELF I ILLING FOUNTAIN PEN.

APPLICATION FILED JUNE 1. 1920.

Patented June 14, 1921.

INVENTOR.

I v W; &N wH Q ww I r lr 7 member 3 has aforced fit.

m'eInber 3 carries the pen UNITED STATES PATENT OFFICE.

PAUL H. QUALMANN, or MILWAUKEE, WISCONSIN. i

SELF-FILLING FOUNTAIN-PEN.

Application filed June 1,

To all whom it may concern.

Be it known that I, PAUL H. QUALMANN, a citizen of the United States,.residing at Milwaukee, county of Milwaukee, and State of Wisconsin, have invented new and useful Improvements in Self-Filling Fountain- Pens, of which the following is a specification.

. ble for such purposes. It is therefore an ob ject of this invention to provide a self filling fountain pen which may be readily manipulated by one hand of the operator leaving the other hand free.

()t-her objects of this invention are to provide a self filling fountain pen which may be operated in a convenient manner from the end of the pen as distinguished from a fountain pen which has to be filled by manipulation of a lever at the side of the pen, and to provide locking means for locking the operating mechanism against accidental motion.

Other objects are to provide a self filling fountain pen of extreme simplicity which may therefore be made at minimum cost; to provide a self filling fountain pen which is composed of a minimum number of parts; and to provide'a self filling fountain pen in which the tube is collapsed throughout its entire length thereby producing a maximum filling of the pen.

In the drawings:

Figure 1 is a longitudinal view partly in section of the fountain pen showing the tube in expanded position.

ig. 2 is a similarview showing the'tube in collapsed position.

Fig. 3 is a detail of the spring arms. and bearing plates.

Fig. 4 is a sectional view of the cap for the upper end of the fountain pen.

' ig. 5 is a section on the line 5--5 of Fig. 1.

The end cap which is used to, cover, the

, pen point when not in use has been omitted from the drawings for the sake of clearness.

The-body 1 of the pen is provided with a tapered opening 2 in. which the tapered end This tapered'end point and assof Specification of Letters Patent.

ciatcd parts.

Patented June 14, 1921. 1920. Serial No. 385,445.

The tapered end member terminates in a shoulder 4 and a nipple 5 upon which latter is secured the collapsible tube 6. The upper end of the body 1 is closed by means of a cap 7 which has threaded engagement with the body portion 1. The cap 7 carries a't'humb operated plunger 8 which projects outwardly through an opening 9 in the cap under normal conditions. The plunger 8 has an enlarged cylindrical portion 10 upon its inner end which slides within the cylindrical inner" portion of the cap 7 and in its outward position seats upon the shoulder 11 of the cap 7. This portion 10 carries a pin 12 which seats within a bayonet slot 13 when in-extended position. Vhen it is desired to press the plunger inwardly. it is given a partial turn so that the pin 12 moves first in the horizontal portion of the bayonet slot andfinally arrives in the vertical portion of the bayonet slot. In this position, the plunger is adapted to be pressed inwardly by the thumb of the operator.

The mechanism for transforming the longitiulinal motion of the plunger 8 into the lateral motion for collapsing the tube 6 comprises a pair of spring arms 14 which extends substantially the full length of the body of the pen, the free ends 15 seating against the shoulder 4, and the yoke portion 16 being positioned adjacent the enlargement 10 of the plunger 8. These spring members 14, it will be noted from Fig. 1, are bowed inwardly to a slight extent in normal position so that any pressure exerted longitudinally .of the pen tending to shorten the distance between the yoke 16 and the ends 15 results in causing the approach of the central portions of the spring arms 14 as shown in Fig. 2. This motion of the spring arms 14 clamps the tube 6 between them, but such clampingaction, if applied directly to the tube, would be 'over only a limited area of the tube.- In order to enhance the effect of this clamping action,'a pair' of rigid plates 17 are positioned one upon each side of the tube andare arranged to extend substantially the tube, thereby causingthetube to be contracted throughout tire length. These plates 17 are held in' position upon the spring arms 14 by means of a pair of ears 18 formed integrally with the plates and bent about the spring arms 14 adjacentthe central portion thereof.

The locking action secured by the cothe entire length r of substantially its en- 35 from inadvertent discharge thereafter.

operation of the pin 12 and the bayonet slot 13 is effective against a longitudinal accidental motion of the plunger 8. However, to guard against an accidental twisting mo- 5 'tion of the plunger 8 which would disengage the pin from the horizontal portion of the bayonet slot, additional means are provided as shown in Fig. 4:. The horizontal portion of the bayonet slot is provided with an en- 10 largem'ent 19 which is in the nature of a semi-circular recess 19 which extends outwardly from th inner end of the horizontal portionof the bayonet slot. It will thus be seen that when the plunger 8 is given a rotary motion for a portion of the turn, the

pin 12 will travelalong the horizontal portion of the bayonet slot and the pressure of the spring 14 will force the yoke 16 against the enlargement 10 and will thereby seat the -2 pin 12 within the recess 19, thereby securing the plunger 8 against accidental rotary disengaging motion.-

It will be noted that a self filling fountain pen has been provided-in which the tube is 2 collapsed throughout its extent during the filling operation and in which extremely simple means have been provided for accomplishing this result. It will also be 7 noted that manipulation of the fountain pen during filling operation may be made the pen and such means are not complicated or difiicult of manipulation or of assembly but are design.

I claim: 1. A self filling fountain pen comprising a of extremely simple and eflicient '4 pen carrying portion, a' collapsible tube mounted thereon, a cylindrical body surrounding said tube, and means extending outwardly from'the' top portion of the pen for collapsing said tube,:said means arranged to be locked in one position of adjustment,

said means adapted to collapse said tube when given a longitudinal motion.

2. A self filling fountain pen comprising a body portion, a collapsible tube mounted therein, an elongated U-shaped spring mem ber having its arms positioned upon opposite sides of said tube, and means extending outwardly'from' said body portion for causing x v the simultaneous inward bowing of sai 6Q spring arms to thereby collapse said tube.

,3. A "self filling fountain pen comprising a body portion, a collapsible tube mounted therein, an elongated-U-shaped spring member having its arms positioned upon opposite sides of said tube, plates-mounted upon opposite sides of said tube between said tube and said spring arms, and means extending outwardly from said body to simultaneously bow said spring arms and thereby cause said plates to collaps said tiibe.

4. A self filling fountain pen comprising a. body, a tube mounted within said body, an

taneous motion of said plates to collapse said tube.

5. A self filling fountain pen comprising a body, a tube mounted within said body, an elongated U-shaped spring membermounted within said body and having its arms positioned upon opposite sides of said tube, plates mounted upon said spring arms and arranged to bear upon opposite sides of said tube, and a plunger pro'ecting from the upper end of said body an arranged to have motion of rotation and translation 6; A self fillingfountain pen comprising a cylindrical body portion, a collapsibleink tube mounted therein, an elongated U- shapcd spring member having its arms initially bowed inwardly and positioned within said cylindrical body and upon opposite. sides of said tube, plates mounted between saidarms and said tube and carried by said arms, a cap secured upon the upper end of said cylindrical body and provided with a bayonet slot, a plunger mounted within said cap and having a pin adapted to travel within said bayonet .slot, thereby temporarily locking said plunger in one position, said plunger being adapted to bear upon the yoke portion of said elongated U-shaped spring member and cause thelapproach of an intermediate portion of said spring arms,

thereby'causingsaid'plates to collapse said ink tube.

7. A self filling fountain pen comprising a body portion, a. tube mounted withim said body portion, an elongated U-shaped spring member having its arms initially bowed toward each other, and positioned upon opposite sides of said'tube, and a plunge-r adapted to cause said arms to approach each other and collapse said tube, said body portion having a bayonet slot adjacent said plunger with an outwardly extending recess at its outer end and a pin carried by said plunger and adapted to cooperate with said bayonet slot and to be finally seated in locked position within said recess.

In testimony whereof I affix my signature in the presence of two witnesses.

PAUL H. QUALMA'NN.

Witnesses:

AR'IVW. Mmnow, A. R. WooLFoLx, Jr.