US2143601A - Fountain pen - Google Patents
Fountain pen Download PDFInfo
- Publication number
- US2143601A US2143601A US147196A US14719637A US2143601A US 2143601 A US2143601 A US 2143601A US 147196 A US147196 A US 147196A US 14719637 A US14719637 A US 14719637A US 2143601 A US2143601 A US 2143601A
- Authority
- US
- United States
- Prior art keywords
- piston
- fountain pen
- diaphragm
- pen
- ink
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43K—IMPLEMENTS FOR WRITING OR DRAWING
- B43K5/00—Pens with ink reservoirs in holders, e.g. fountain-pens
- B43K5/02—Ink reservoirs
- B43K5/06—Ink reservoirs with movable pistons for withdrawing ink from an ink-receptacle
Definitions
- the invention relates to an improvement in fountain pens of the kind which are filled through means of a piston in an ink container.
- the piston may be .connected with adiaphragm 5 which in its normal position may be folded up and which by depression into the ink container and the following. withdrawal will cause the ink to rise through the ascending pipe when the pen is inserted into the ink.
- pens made of transparent material it is especially important that the diaphragm is not visible and in the withdrawn position of the piston it should therefore be folded together and will therefore take up too much room.
- a spring to maintain the piston in its withdrawn position.
- the drawing shows an elevational view of the a fountain pen with the rear of the barrel in sectlon.
- the ink container is designated by the letter a and c is the elastic diaphragm.
- b is a socket provided with screw threads which serve to keep the diaphragm positioned and on the other end of which the cap or end piece of the pen is screwed after the filling of the same has taken 5 place.
- the piston d is shown in its upper position.
- a piston-operated, self-filling fountain pen comprising the combination, with a barrel forwardly provided with a writing point and at the rear portion with a longitudinally movable piston and a rear stop limiting the upward movement 25 of said piston, of an elastic membrane closing said barrel, said piston having a head portion projecting forwardly into said barrel and freely resting on said membrane, which returns said piston into the outermost upper position when released upon having been projected forwardly into the barrel.
- a piston-operated fountain pen according to claim 1, wherein the membrane is constantly maintained under sufficient tension by said piston 35 thereby to prevent the formation of folds and wrinkles in said membrane.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pens And Brushes (AREA)
Description
Jan. 10, 1939. J NERSEN 2,143,601
FOUNTAIN PEN Filed June 9, 1957 lm/en for JOHANNE I VERfiEN dfiiornays Patented Jan. 10, 1939 UNITED STATES PATENT OFFICE Application June 9, 1937, Serial No. 147,196 In Denmark June 9, 1936 2 Claims.
The invention relates to an improvement in fountain pens of the kind which are filled through means of a piston in an ink container. The piston may be .connected with adiaphragm 5 which in its normal position may be folded up and which by depression into the ink container and the following. withdrawal will cause the ink to rise through the ascending pipe when the pen is inserted into the ink. It is known in such fountain pens to use diaphragms which can be folded up when the piston is in its upper position so as to form a tight joint at the top of the ink container. By pens made of transparent material it is especially important that the diaphragm is not visible and in the withdrawn position of the piston it should therefore be folded together and will therefore take up too much room. Furthermore it has in certain cases been necessary in previous constructions of this kind to employ a spring to maintain the piston in its withdrawn position.
According to the present invention these drawbacks are avoided in that instead of a diaphragm which can be folded together an elastic diaphragm such as rubber which surrounds the piston and which is not folded up, but will be stretched in a lengthwise direction when the piston is pressed downwards, is used to form a tight joint above. Through the elasticity of the said diaphragm the piston will be returned to its upper position so that the spring usually employed is superfluous.
The drawing shows an elevational view of the a fountain pen with the rear of the barrel in sectlon.
The preferred embodiment of the invention is illustrated in the accompanying drawing, wherein the ink container is designated by the letter a and c is the elastic diaphragm. b is a socket provided with screw threads which serve to keep the diaphragm positioned and on the other end of which the cap or end piece of the pen is screwed after the filling of the same has taken 5 place. The piston d is shown in its upper position.
When the pen is to be filled the end piece is removed and after'the pen has been inserted in the ink the piston rod is pressed downwards and 10 when through the elasticity of the diaphragm it has again been raised to its upper position ink will rise through the ascending pipe. The ring e when the socket b is screwed on is pressed against the flange on the diaphragm c and prevents this 16 from being pressed down into the ink container if the pressure on the piston rod is too strong.
Having now described my invention what I claim as new and desire to secure by Letters Patent is: I 20 1. A piston-operated, self-filling fountain pen comprising the combination, with a barrel forwardly provided with a writing point and at the rear portion with a longitudinally movable piston and a rear stop limiting the upward movement 25 of said piston, of an elastic membrane closing said barrel, said piston having a head portion projecting forwardly into said barrel and freely resting on said membrane, which returns said piston into the outermost upper position when released upon having been projected forwardly into the barrel.
2. A piston-operated fountain pen according to claim 1, wherein the membrane is constantly maintained under sufficient tension by said piston 35 thereby to prevent the formation of folds and wrinkles in said membrane.
JOHANNES IVERSEN.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK2143601X | 1936-06-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
US2143601A true US2143601A (en) | 1939-01-10 |
Family
ID=8158316
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US147196A Expired - Lifetime US2143601A (en) | 1936-06-09 | 1937-06-09 | Fountain pen |
Country Status (1)
Country | Link |
---|---|
US (1) | US2143601A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040218966A1 (en) * | 2003-04-29 | 2004-11-04 | Fuller Douglas D. | Hand-held self-dispensing applicator |
EP3482970A1 (en) * | 2017-11-10 | 2019-05-15 | Sdi Corporation | Pressure regulating device for writing tool and writing tool having the same |
-
1937
- 1937-06-09 US US147196A patent/US2143601A/en not_active Expired - Lifetime
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040218966A1 (en) * | 2003-04-29 | 2004-11-04 | Fuller Douglas D. | Hand-held self-dispensing applicator |
WO2004096447A2 (en) * | 2003-04-29 | 2004-11-11 | Fuller Douglas D | Hand-held self-dispensing applicator |
WO2004096447A3 (en) * | 2003-04-29 | 2005-03-10 | Douglas D Fuller | Hand-held self-dispensing applicator |
US6918711B2 (en) * | 2003-04-29 | 2005-07-19 | Douglas D. Fuller | Hand-held self-dispensing applicator |
EP3482970A1 (en) * | 2017-11-10 | 2019-05-15 | Sdi Corporation | Pressure regulating device for writing tool and writing tool having the same |
US10414201B2 (en) | 2017-11-10 | 2019-09-17 | Sdi Corporation | Pressure regulating device for writing tool and writing tool having the same |
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