US3027874A - Piston fountain pen including reserve ink chamber - Google Patents

Piston fountain pen including reserve ink chamber Download PDF

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Publication number
US3027874A
US3027874A US743074A US74307458A US3027874A US 3027874 A US3027874 A US 3027874A US 743074 A US743074 A US 743074A US 74307458 A US74307458 A US 74307458A US 3027874 A US3027874 A US 3027874A
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United States
Prior art keywords
piston
chamber
ink
barrel
fountain pen
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
Application number
US743074A
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English (en)
Inventor
Bross Helmut
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Individual
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Individual
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Publication of US3027874A publication Critical patent/US3027874A/en
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    • 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 present invention relates to a fountain pen having a piston, and a main chamber as well as a reserve chamber for ink.
  • the invention is directed above all to the advantageous shape of the piston, in the head of which is provided a chamber for reserve ink.
  • FIG. 1 is a section showing one constructional form of a piston head for a fountain pen according to the invention
  • FIG. 2 is a section showing another constructional form of the piston head according to the invention.
  • FIG. 3 is a section of a fountain pen having mounted therein a piston head according to the invention.
  • double pistons to wit, two piston heads being arranged one after the other, whereby a reserve ink chamber is furnished between the two piston heads fluid of which, at a given time, is exhausted into the main ink chamber with the application of pressure means.
  • the double piston head By the double piston head, however, the total ink reserve is diminished to a considerable extent.
  • the present invention obviates these disadvantages.
  • the filling mechanism 21 being slidably arranged in the fountain pen barrel 3 consists of a pot-like hollow piston head 1 the rear wall 11 of which is rigidly connected with a piston rod 10 and arranged so as to be adapted to move in longitudinal direction.
  • the rear wall 11 tightly seals the rear portion of the piston head 1 by means of packing elements 9, while further packing elements 2 assure a fluid-tight seal between piston head 1 and barrel 3.
  • the drawing shows the filling mechanism in the position assumed when the ink chamber is filled up.
  • the pot-like hollow piston head 1 is defined by the side wall 8, front wall 5, and the above-mentioned rear wall 11, and provides reserve ink chamber 7.
  • a small aperture 6 is provided in the reserve chamber front wall 5 and communicates the reserve chamber with main ink chamber 4.
  • the small aperture 6 is of such size that ink contained within the reserve chamber will not escape through the small aperture except upon increase in pressure as would occur upon forcible advancing of the rear wall 11 longitudinally along the reserve chamber side walls 8.
  • ink issues from chamber 4, and reserve chamber 7 remains filled since the small aperture 6 is too small for escape of ink.
  • the rear wall 11 of the hollow piston head 1 is, due to the lower frictional resistance of the packing elements 9 relative to the inner wall 8 of the hollow piston head 1, first moved backwards up to a stop 12 by pulling the piston rod 10, and due to the suction effect the reserve ink chamber 7 thereby fills through the small aperture 6. Only now the whole piston moves backwards, until a stop 13 abuts against the surface 14 and a main ink space 4, too, is then filled up in the known manner.
  • FIG. 2 shows another constructional form of the invention in which the approach of the rear wall 19 towards the front wall 17 of the pot-like hollow piston is effected by pressure exerted on the piston rod 10 and by the folding of the accordionor bellows-shaped side walls 18.
  • FIG. 3 shows a longitudinal section of a fountain pen holder in which is mounted a filling mechanism having a reserve ink chamber according to the invention.
  • This figure represents, additionally, a writing pen point 23, a handle 20 adapted to engage the filling mechanism 21 which is not shown in detail, and the front wall 22 or" the main ink chamber 4.
  • a piston fountain pen comprising a barrel, a writing pen point mounted on one end of the barrel, a piston slidably arranged in said barrel, a main chamber adapted to store ink and defined by the wall of said barrel, said one end of the barrel, and said piston, said piston being hollow to provide an auxiliary chamber adapted to store reserve ink, said auxiliary chamber being degfined by a front wall disposed adjacent said one end of the barrel, a rear wall, and a side wall, said front wall having a small aperture therein communicating with the main ink storage chamber, said rear wall being slidably arranged in said side wall, and a piston rod rigidly connected to the rear wall, whereby upon exhaustion of the main chamber, movement of the piston will advance the rear wall toward the front wall of the auxiliary chamber thereby reducing the capacity thereof and delivering ink through the aperture into the main chamber.
  • a piston fountain pen comprising a barrel, a writing pen point mounted on one end of the barrel, a piston slidabiy arranged in said barrel, a main chamber adapted to store ink and defined by the wall of said barrel, said one end of the barrel, and said piston, said piston being hollow to provide an auxiliary chamber adapted to store reserve ink, said auxiliary chamber being of pot-like shape, said auxiliary chamber being defined by a front wall disposed adjacent said one end of the barrel, a rear wall, and a side Wall, said front wall having a small aperture therein communicating with the main ink storage chamher, said rear Wall being slidably arranged in said side wall, a stop on said side wall limiting the rear movement of said rear wall, and a piston rod rigidly connected to the rear Wall, whereby upon exhaustion of the main chamber. Movement of the piston will advance the rear wall toward the front wall of the auxiliary chamber thereby reducing the capacity thereof and delivering ink through the aperture into the main chamber.
  • a piston fountain pen as claimed in claim 1 wherein first packing means are provided at the front end of the auxiliary chamber between the wall of the barrel and side walls of said chamber, and second packing means are provided at the rear end of the auxiliary chamber between the rear wall and the side wall of said chamber, said first packing means having higher frictional resistance relative to the barrel wall than the resistance of said second packing means with respect to the side wall of the auxiliary chamber.
  • a piston fountain pen comprising a barrel, a writing pen point mounted on one end of the barrel, a piston slidably arranged in said barrel, a main chamber adapted to store ink and defined by the wall of said barrel, said one end of the barrel, and said piston, said piston being hollow to provide an auxiliary chamber adapted to store reserve ink, said auxiliary chamber being defined by a front Wall disposed adjacent said one end of the barrel, a disk-shaped rear wall, and bellows joining said front and rear walls, said front wall having a small aperture therein communicating with the main ink storage chamher, and a piston rod rigidly connected to the rear wall, whereby upon exhaustion of the main chamber, movement of the piston will advance the rear wall toward the front wall of the auxiliary chamber thereby reducing the capacity thereof and delivering ink through the aperture into the main chamber.
  • a piston fountain pen as claimed in claim 4 wherein packing means are provided at the front end of the auxiliary chamber between the wall of the barrel and side walls of said chamber, said packing means having comparatively high frictional resistance relative to the, barrel wall, whereby upon exertion of pressure on the: piston rod said bellows will be pressed together and uponl retraction of the piston said bellows will first be expanded before said frictional resistance will be overcome.
  • a piston fountain pen according to claim 4, wherein said bellows consist of a tube of pliable material capable of folding in the manner of an accordion.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pens And Brushes (AREA)
  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
US743074A 1957-06-21 1958-06-19 Piston fountain pen including reserve ink chamber Expired - Lifetime US3027874A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEW21374A DE1101217B (de) 1957-06-21 1957-06-21 Kolbenfuellhalter mit Haupt- und Reservetintenraum

Publications (1)

Publication Number Publication Date
US3027874A true US3027874A (en) 1962-04-03

Family

ID=7596996

Family Applications (1)

Application Number Title Priority Date Filing Date
US743074A Expired - Lifetime US3027874A (en) 1957-06-21 1958-06-19 Piston fountain pen including reserve ink chamber

Country Status (5)

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US (1) US3027874A (de)
CH (1) CH359623A (de)
DE (1) DE1101217B (de)
FR (1) FR1198270A (de)
GB (1) GB884820A (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3167057A (en) * 1962-04-17 1965-01-26 Frank T Johmann Containers for fluids with reserve space
US4139311A (en) * 1976-05-03 1979-02-13 Willy Lorscheidt Dispensing cartridge having an improved automatic filler stick positioning mechanism
US4435099A (en) 1979-03-13 1984-03-06 Piolt, Man-Nen-Hitsu Kabushiki Kaisha Fountain pen with motor feed
US4781483A (en) * 1986-10-03 1988-11-01 Willy Lorscheidt Device for exposing a mass stored in a container
US6152159A (en) * 1997-01-14 2000-11-28 Frank W. Schaefer, Inc. Valve assembly and method for use in delivery of molten metal

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3167056A (en) * 1962-04-17 1965-01-26 Frank T Johmann Container for fluids with reserve space
JPH02112380U (de) * 1989-02-27 1990-09-07

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US159829A (en) * 1875-02-16 Improvement in hydraulic elevators
US1127201A (en) * 1911-08-08 1915-02-02 Ulric C Deike Syringe.
US2257324A (en) * 1940-09-16 1941-09-30 Behn Walter Vehicle jack
US2284774A (en) * 1933-11-03 1942-06-02 Arthur E Smith Hypodermic syringe
US2869543A (en) * 1957-08-23 1959-01-20 Iowa Cooperative Ass Injector

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE691153C (de) * 1938-05-17 1940-05-17 Albert Fink Fuellfederhalter mit einem im Halterschaft an einen Haupttinteraum sich anschliessenden Hilfstintenraum

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US159829A (en) * 1875-02-16 Improvement in hydraulic elevators
US1127201A (en) * 1911-08-08 1915-02-02 Ulric C Deike Syringe.
US2284774A (en) * 1933-11-03 1942-06-02 Arthur E Smith Hypodermic syringe
US2257324A (en) * 1940-09-16 1941-09-30 Behn Walter Vehicle jack
US2869543A (en) * 1957-08-23 1959-01-20 Iowa Cooperative Ass Injector

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3167057A (en) * 1962-04-17 1965-01-26 Frank T Johmann Containers for fluids with reserve space
US4139311A (en) * 1976-05-03 1979-02-13 Willy Lorscheidt Dispensing cartridge having an improved automatic filler stick positioning mechanism
US4435099A (en) 1979-03-13 1984-03-06 Piolt, Man-Nen-Hitsu Kabushiki Kaisha Fountain pen with motor feed
US4781483A (en) * 1986-10-03 1988-11-01 Willy Lorscheidt Device for exposing a mass stored in a container
US6152159A (en) * 1997-01-14 2000-11-28 Frank W. Schaefer, Inc. Valve assembly and method for use in delivery of molten metal

Also Published As

Publication number Publication date
FR1198270A (fr) 1959-12-07
CH359623A (de) 1962-01-15
DE1101217B (de) 1961-03-02
GB884820A (en) 1961-12-20

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