US1579937A - Fountain pen - Google Patents

Description

April 6 1926; 1,579,937

J. HOLTZMAN FOUNTAIN PEN Filed Feb. 25, 1924 /1 TTOR/VEY Patented Apr. 6, 1926'.-

JOHN HOL'I'ZMAN, OF NEW .YOBK, N. Y.,

ASSIGNOR or ems-1mm? 'ro cnA'nLns G.

HENSLEY, OF NEW, YORK, N. Y.

room-ant ran,

Application filed February'28, 1924. Serial No. 894,808.

. To all whom it may concern:

Be it known that I, JOHN HOLTZMAN, a citizen of the United States, and a resident of the city, county, and State of New York,

5 have invented certain new and useful Improvements in Fountain Pens, of which the following is a specification.

My invention relates to fountain pens and more especially to that class of fountain pens which contains means for refilling the reservoir of the pen. The object of my invention is to provide very simple and efficient means for compressing and releasing the rubber sac or ink holding member to cause a supply-of ink to be drawn into the sac whenever the ink is to be replenished. The sac compressing and releasing device includes an arm for pressing upon the sac to force the air'out, and this arm reaches over or around the end of the 'sac and has one end connected with the interior of the barrel of the pen. In the preferred form this arm is resilient or in the form of a spring so that it will release its pressure.

upon the sac under its own spring action. This arm is actuated by a revolvable nut or cam which is accesslble' from the exterior of the barrel and it may be placed on the end of the barrel so as to leave the side of the barrel smooth and unobstructed. In the preferred form of my invention, itis only necessary to turn this nut one revolution to refill the sac. During one half revolution the air is expelled from the sac and during the other half revolution the sac is released and it draws in the supply of ink. The present device is simple, inexpensive and efficient.

Another object of my invention is to combine, in a device having the above characteristics, a pencil and a pen, arranged end to end, so that the article may be used for writing either in ink or pencil. The same refilling features are utilized in the combined article.

In the drawing forming part of this application,

Figure 1 is a longitudinal sectional view of a fountain pen embodying m invention, Figure 2 is a similar view s owing the parts in the positions they occup when the see is collapsed ready for the re lling operation,

Figure 3 is a fra mentary sectional view showing a modified orm of cam nut, and

- Fi' 're 4 is a sectional view showing the comblned pen and pencil device. Referring first to the device shown in Figures 1 and 2 it will be seen that I pro-- vide a fountain pen which includes a holder .60

or barrel 1 of cylindrical form, and in one of a rubber or other flexible,tubular sac 6.

These parts are of the usual construction or they may be of any special construction and they perform the functions common to such parts. v I

There is a shoe or resifi plate -7 which lies along one side 0? the sac 6 and it is adapted to'be ressed against the latter to exude the air t ierefrom. There is an arm 8 having one end connected to the shoe 7 at the point 9, and in the construction herein illustrated this arm extends around the closed end 10 of the sac and one end is shown herein as riveted or otherwise secured to the 12 secured to or formed upon the arm 8,

' which is operated upon by the cam member.

In Figures 1 and 2 of the drawing I have shown a plug .13 which lies partly within the barel 1 and part of which projects beyond the barrel so that it may be grasped by the hand and'turned in relation to the barrel. The projecting portion '14 forms the grip portion of this plug. The plug is revolvable, in the barrel and it is held therein by a screw 15 which passes through the barrel and extends into acircumferential groove 16 in the plug 13. The inner end of this plugF is ormed to act as a cam upon the arm 8. or this purpose the end 17 of the plug is cut or ohamfered in order that it ma engage,

the tongue 12 and either permit tie arm 8 to lie in the position shownin Figure .1 or

'to force it into the position shown in Fig- 1 0 ure 2.

Operation When the device is in the condition shown in Figure 1 the tongue 12 projects into a notch 18 in the end of the plug and the spring arm 8 presses up against the inner surface of the barrel and the sac 6 is extended to full position. If there is ink in the sac, the'pen may be used in this condi- 1wopposite to the notch 18. The pen point 2 may be dipped into the ink supply after the plug has been thus turned a half revolution to the position shown in Figure 2. As the plug 13 is thus turned one half revolution, the chamfered end 17 operates as a cam upon the tongue 12 and forces the arm 8 into the position shown in Figure 2. In this condition,. the shoe 7 has pressed upon the sac 6 and it has so compressed the latter that the air or air and any remaining ink, is forced out of it. While holding the pen point in the ink supply the plug 13 is again turned one half revolution or back to the position shown in Figure 1. During this second movement, which, in the construction shown in Figures 1 and 2 may be either clockwise or counterclockwise, the cam 17 allows the tongue 12 to move to the right under the tension of the spring arm 8 and the latter moves the shoe 7 toward the barrel and allows the sac to expand under its own tension to the position shown in Figure 1. During this expansion of the sac, ink is drawn into it to form a fresh supply. IVith the present device, a single revolution of the plug will so operate the arm 8 as to cause a complete collapse and expansion of the saoand the latter may entirely fill with ink as a result of this simple operation. Furthermore, the barrel of the pen remains free and unobstructed and there is no necessity for weakening the barrel by cutting a slot in the side as in the devices now on the market.

In the construction shown in Figure 3 the parts operate'the same as above described except that the plug 20 is threaded. by

means of the screw threads 21 into the end of the barrel. In this case, the plug is turned a half revolution in one direction to compress the sac and it is turned back a half revolution for the release and expansion of the sac.

In Figure 4 I have shown the invention embodied in a combined pen and pencil. The pen, sac, barrel, and the arm 8 are all the same as described above. The plug 22 has the cam end 17 and the notch 18 as above described and it is threaded into the end of the barrel. The plug 22, projects beyond the barrel and it has a threaded here to receive the threaded end 23 of the pencil member 25 and a subbore 26 to receive the eraser 27 on the end. of the pencil member 25. The pencil member'25 contains the writing lead 28 and any form of mechanism for advancing the lead, this latter not being shown as any well known device for the purpose may be used. I

In this latter device the barrel is filled by holding the latter and revolving the plug 22, the same as in the device shown in the other views. The pencil member 25 may be removed by holding the plug 22 and revolving the pencil member.

It will be apparent that the point at which the cam surface 17 engages with the member 12 is nearer the point of attachment 11 of the compressing member than the point at which this member acts upon the sack or, in other words, the free end of the frame 8. From this it will be ap parent that a comparatively slight movement caused by the cam surface 17 will produce a greater movement in the free end of the arm 8 and therefore bring about a more complete collapse in the sack and the drawing in of a maximum supply of ink when the sack is released.

When the plug is rotated so that the end of the member 12 drops into either the depression 18 or the depression 19 it causes a slight clicking sound by which the user will know the point at which the plug should come to rest for compressing or opening the sack. This is an advantage inasmuch as the operating mechanism is within the barrel and is not visible.

Having described my invention, what I claim is:

1. A fountain pen includin a barrel, a

compressible ink holding sac l: therein, a compressing member in the barrel and attached thereto, said compressing member acting on said sack to compress it, and means operating on said compressing member nearer its point of attachment to the barrel than the place at which the compressible member acts on the sack and between said points whereby a lever action is produced to cause substantial compression of the sack.

2. A fountain pen including a barrel, a compressible ink holding sack therein, a compressing member in the barrel and attached thereto, said compressing member acting on said sack to compress it, and a member in one end of the barrel operable from outside the barrel, said latter member having a cam portion acting on said compressing member between its point of at tachment to the barrel and the point where the compressing member acts on the sack.

3. A fountain pen including a barrel, a compressible ink holding sack therein, a

compressing member in the barrel and at barrel, said latter member having a cam portion acting on said compressing member v etween its point of attachment to the barrel. and the point where the compressing member acts on the sack,

4. A fountain pen including a barrel, a compressible ink holding sack therein, a compressing member 'in the barrel and attached thereto and extending 'around the closed end of the sack and a member in one endof the barrel operable from outside the barrel, said latter member having a cam portion acting on said compressing member between its point of attachment to the barrel and the point where the compressing member acts on the sack, and nearer said former than said latter point.

5. Aiountain pen includinga barrel, a compressible ink holding sack therein, a resilient compressing member in the barrel attached thereto an extending around the closed end of the sack and a member on one I end of the barrel operable from outside the end of the barrel operable from outside the V side the same and having a cam portion acting on said compressing member to press the sack, and having a notch therein-whereby when said plug is rotated a clicking sound will be caused for indicating the position of said revolvable member in relation to the operating position of said compressing member.

8. A fountain pen including a barrel, a compressible sack therein for holding the supply of ink, a resilient arm in said barrel havlng one end arranged to act on said sack, said arm extending around the closed end of the sack and having its other end secured to the inside of the barrel, and a member revolvably mounted in the end of the bar- -rel and having a cam portion adapted to actuate said arm as the revolvable member is revolved.

Signed at the city, county and State of New York this 6th day of February, 1924.

JOHN HOLTZMAN.-

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