US1714965A - Fountain pen - Google Patents

Description

May 28, 1929. w. v. ULLNER FOUNTAIN PEN Filed July 26, 1926 2 Sheets$heet y 1929- w. v. ULLNER 7 ,9

FOUNTAIN PEN Filed July 26, 1926 2 Sheets-Sheet 2 Patented May 28, 1929.

WALTER V. ULLNER, OF OAKLAND, CALIFORNIA.

FOUNTAIN PEN.

Application filed July 26,

My invention relates to improvements in fountain pens and the like wherein a cap is arranged to be slidably movable along the barrel of the pen to expose the point for use without removing the cap from the barrel.

The primary object of my invention is to provide an improved fountain pen construction, and particularly an improved cap constriurtion whereby a cap is arranged to be carried upon the barrel of the pen at all times and thereby avoid possible loss and breakage so objectionable to the use of removable caps Another important'object is to provide a pen provided with an improved cap adapted to efficiently enclose the pen point and to facilitate the exposing of the pen for purposes of writing.

A further object is to provide an improved construction which will increase the ink capacity of a pen of standard dimensions.

Another object is to provide a device which is of neat and attractive appearance and which is simple and efiicient. in operation.

A still further object is to provide an improved construction which may be easily assembled and which may be readily taken 30 apart for cleaning or other purposes.

I accomplish these and other objects by means of the improved construction disclosed in the drawings forming a part of the present application wherein like char acters of reference are used to designate similar parts throughout the specification and drawings and in which,

Fig. 1 is a side elevation of my lll'lPl'OVOCl fountain pen, the dotted lines showing the improved cap partly open.

Fig. 2 is a similar view with parts broken away and shown in section to disclose the construction and operation of the device.

Fig. 3 is a transverse sectional view taken upon the line 33 of Fig. 2 in the direction indicated.

Fig. 4 is a transverse sectional view taken at the point marked by the section line 44 of Fig. 2, with the prongs assumed to be moved to the position indicated in dotted lines in Fig. 1 of the drawings. r

Fig. 5 is a transverse sectional View taken upon the line 55 of Fig. 2 in the direction indicated.

pen with the cap in receded position.

. being shaped to cause the Fig. 6 is a side elevation of my improved 1926. Serial No. 124,980.

Fig. 7 is a transverse sectional view taken upon the line 77 of Fig. 6 in the direction indicated.

Referring to the drawings, the numeral 1 is used to designate in general the barrel of a fountain pen provided with the usual pen point 2. A cap 3 is slidably mounted upon the barrel 1, said cap being provided with a plurality of pointed prongs 4 arranged to normally converge-around the pen point 2 and to fully enclose the same when the cap is moved to closed position as shown in full lines in Figs. 1 and 2 of the drawings. The edges of the prongs are beveled and arranged to match closely along their entire length when the cap is in closed position whereby a smooth surface and tight closure is obtained.

The prongs 4 are constructed in such manner and of such material as to have suflicient spring resilience to normally contract the prongs toward each other. Expanding lugs 6 are formed upon the inner sides of the prongs and arranged to engage grooves 7 formed along the barrel 1, the backs of the grooves prongs to be spread outwardly to clear the pen point 2 when the cap 3 is moved rearwardly from closed position to operating position. As the cap is moved rearwardly upon the barrel, the prongs are carried into proximate relation with said barrel. The curvature of the barrel is made to substantially conform to the curvature of the prongs 4, and widened wedge shaped grooved portions 8 are formed in the surface of the barrel to receive the prongs when thecap reaches the operative position, the spring resilience of the prongs serving to move the prongs into the grooves and to hold said prongs flush with the surface of the barrel to obtain a smooth surface immediately back of the point 2. Recesses 9 are formed adjacent the forward ends of the grooves 7 to receive the lugs 6 when the cap is in closed position whereby the prongs may contract into closing relation. Recesses 11 formed at the rearward ends of the grooves 7 receive the lugs 6 when the cap is moved to operating position, thereby defining the operating position and permitting the prongs to contract into the groove portfuons 8 and give a smooth uninterrupted surace.

The pen is provided with an ink reservoir 12 consisting of a sack constructed of rubber or other suitable material within the bled within the barrel 1 and connected to the point 2 in the well known manner. The rearward end of the sack preferably terminates in a bulb portion 14 extending outwardly from the end of the barrel and arranged to be compressed for fillingthe reservoir. Acap 16 is detachably connected upon the end of the barrel to normally enclose the bulb 14.

In operation, the reservoir 12 is. assembarrel 1 and connected to a pen carrying member 17 threaded or otherwise secured upon the upward end of the barrel. The cap 16 is applied upon the opposite end of the barrel to enclose the bulb 14-, and the cap 3 is applied upon the barrel by moving the same over the forward end of the barrel, sufficient pressure being applied to force the lugs 6 over the end of the barrel and the pen carrying member 17. When the lugs 6 are received within the recesses 9 the prongs 4 are permitted to contract and form a complete closure around the point 2, as above explained.

When it is desired to open the pen for use, the cap 3 is pressed rearwardly along the barrel 1, thereby causing'the lugs 6 to be moved along the grooves 7 whereby the prongs may be spread apart to clear the pen point 2 as indicated in dotted lines in Fig. 1. As the cap reaches its extreme rearward position, the lugs 6 drop into the recesses 11 and permit the prongs to contract against the barrel within the wedge shaped groove portions 8 as shown in dotted lines in Fig. 2. In this position the point 2'is fully exposed and the pen is ready for use.

When it is desired to again close the pen, the cap 3 is moved forwardly, the first engagement between the lugs 6 and the ends of the grooves 7 operating to spread the prongs 4 and permit the same to be moved forwardly past the end of the barrel. As the cap reaches the forward extreme position the lugs 6 again engage the recesses 9 and permit the prongs to spring into normal closing position.

If it is desired to remove the cap entirely for cleaning or for other purposes, the cap is pressed forwardly and the lugs forced past the end of the barrel and the pen carrying member 17.

' In filling the pen, the cap 16 is removed and the bulb 14 compressed to expel air from the reservoir. The pen point is then inserted into ink and when the bulb is released a supply ofink will be drawn into the reser- V011. ing the bulb toexpel the air, and again inserting the point into the ink, the reservoir and bulb may be completely filled with ink, thereby obtaining a large supply of ink within the pen.

It will be noted that my improved construction entirely avoids the use of a removable cap, such as commonly provided for By then inverting the pen and press-v pens. The inconvenience of removing such caps and reversing the same upon the pen is thereby entirely avoided, and in addition the danger of breaking or losing the cap-is eliminated. The removable cap such as commonly provided necessitates that the operative portion of the pen be made relatively short in order that the total length when the cap is reversed will not prove inconvenient for writing. My improved pen, however, is so arranged that the length of the pen is shortened when the cap is moved to operative position, thereby permitting the barrel of thepen to be made longer than would otherwise be practical and thus obtaining a great increase in the ink capacity.

The cap, as above explained, is so constructed that a smooth unbroken surface is obtained both when the cap is in closing and in operating position, thereby insuring a neat and attractive appearance at all times, zfind permitting the pen to be used with comort.

The specific form and construction of my ters Patent is:

1. The combination with the barrel and point of a fountain pen, of a cap slidably mounted upon the barrel and provided with a plurality of pointed resilient prongs normally converging around the point and having their adjacent edges matching along the entire length thereof to form a tight closure around said point; grooves formed upon the sides of the barrel adjacent each prong to receive said prongs; and expanding lugs connected to the prongs and engaging the bottoms of the grooves, said lugs being arranged to spread the prongs apart when the cap is moved rea-rwardly along the barrel to expose the point.

2. The combination with the barrel and, point of a pen, of a cap slidably mounted upon the barrel and provided with a plurality of pointed resilient prongs normally converging in closely matching relation around the point to enclose the same; grooves formed along the barrel adjacent the prongs, and expanding lugs connected to the prongs and engaging the grooves to spread the prongs apart when the cap is moved rearwardly along the barrel to expose the pen, said lugs being arranged to be received in recesses at the ends of the grooves to permit the prongs to contract to normal opened or closed position.

at each end thereof and widened portions.

formed along the forward portions thereof;

and expanding lugs connected to the prongsand engaging the groovesto spread the prongs apart when the cap is moved rearwardly along the barrel to expose the pen, said lugs being arranged to be received within the forward recesses to permit the prongs to contract to normal closed position around the point and to be received within the rearward recesses to permit the prongs to contract against the sides of the barrel when moved to open position, said prongs being received within the widened portions of the grooves flush with the surface of the barrel to obtain a smooth surface adjacent the pen point;

4. The combination with the barrel and point of a fountain pen, of a cap slidably mounted upon the barrel wardly therealong from normal closing posi- 30 tion to operating position; resilient pointed and movable rearprongs formed upon the forward end of the cap and arranged to contract into closely matching relation enclosing the pen when the cap is in closed position and arranged to be spread apart and received in wedge shaped grooves formed upon the barrel when the cap is moved to operating position, the outer surfaces of the prongs being flush with the surface of the forward end of'the barrel.

5. In a fountain pen, the combination with a barrel having wedge shaped grooves formed upon the forward end thereof and \a pen point, of a cap slidably mounted upon the forward end of the barrel; a plurality of resilient pointed prongs formed upon the forward end of the cap and arranged to contract into closely matching relation enclosing thepen when the cap is in closed posltion; and means formed upon the prongs and engaging the bottoms of the grooves for spreading the points apart to clear'the pen when the cap is moved rearwardly along the barrel, said prongs being received within the upper portions of the grooves'and resting therein with their outer surfaces flush with the surface of the forward end of the barrel when in operating position.

In witness whereof I signature.

v WALTER V. ULLNER.-

hereunto set my

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