|Publication number||US1447632 A|
|Publication date||Mar 6, 1923|
|Filing date||Apr 6, 1920|
|Priority date||Apr 6, 1920|
|Publication number||US 1447632 A, US 1447632A, US-A-1447632, US1447632 A, US1447632A|
|Inventors||Schmidt Henry A|
|Original Assignee||Schmidt Henry A|
|Export Citation||BiBTeX, EndNote, RefMan|
|Referenced by (7), Classifications (5)|
|External Links: USPTO, USPTO Assignment, Espacenet|
Mar. 6, 1923. H. A. SCHMIDT.
sTYLoGRAPHIc INK PENCIL.
FILED APR. 6, 1920.
Paiemd Mar. 6,1923.
STYLOGRAPHIC INK PENCIL.
Application led. April 6, 1920. Serial No. 371,718.
To all whom z't may concern.:
Be it known that I, HENRY A. SCHMIDT,
a citizen of theUnited States, and a resident of College Point, 'in the county of Queens and State of New York, have invented certain new and useful Improvements in Stylographic Ink Pencils, is a specification. v
Thls invention relates to improvements in stylographic ink pencil.
One of the objects of this invention is to produce in a stylographic ink pencil a firm and immovable writing point in which the stylus will be maintained during the operation of writing in properly adjusted station ary relationship to a tubular point and the ink duct or channel will in the act of writin at all times permit the issuance therethroug of an even supply of writing fluid while at the same time my invention enables the ready manualv movement or reciprocation of the stylus outwardly from its writing position for the purpose of breaking any seal in the ink duct caused b capillary attraction or the cleaning away from such duct of any obstruction caused by the thickening of the ink or the deposit of sediment which would render the in k pencil inoperative, and to this end my invention comprises a body having an ink reservoir and a tubular point through which ink is discharged; an air tube or passage extending from an air chamber at the upper part of the body downwardly to the point section thereof; a stylus or needle preferably extending through said tube and mounted to move in said point and to have an inward limit of movement so fixed asto cause the outer end of the stylus to bear immovably and jointly with the tubular point against the paper and coact therewith while writing but to be movable outwardly beyond its writing position preferably by means of a manually-actuated plunger located at the opposite end of the body, which plunger also preferably is provided with a plston recipro` cable in an air chamber which upon actuation forces air through an axial air tube and assists in freeing the, ink duct or passage and maintaining a flow therethrough.
Another object of my invention is to provide in an ink pencil of the character described means for breaking the vacuum which might otherwise be formed above the of which the following ink in the ink chamber within the body or barrel when the pencil is used in writing. For this purpose I provide in such an ink pencll having a main air tube as above described, an auxiliary air passage extending from the lower end of said main passage upwardly to and communicating with the upper end ofthe ink chamber or reservoir whereby air will be admitted into said upper part of the ink chamber or reservoir above the ink to break said vacuum.
With these and other objects in View, the
`invention comprises the combination ofy members and arrangement of parts so combined as to co-act and cooperate with each other in the performance of the functions and the accomplishment of the results herein contemplated, and comprises in one of its adaptations the species or preferred form illustrated 1n the accompanying drawings, in which- F ig. 1 is a vertical central section through a pencil embodying my invention with the cap in place and the position;
Fig. 2 is a similar4 section showing the plunger partly depressed and the stylus extending below and outside the point;
F ig. 3 is a section on the line 3-3 of-'Fig 1; and
' F ig. 4 is a section on the line n4 4: of
Referring noW to these drawings which illustrate a preferred embodiment of my invention, 1 indicates an ordinary cylindrical body or barrel of hard rubber or similar material, provided at its lower end with a tapering point section 2 of similar material which, las shown, has a metallic tubular point 3 suitably mounted therein, which point 3 yhas a suitable duct or passage 3a through which ink is adapted to be fed or supplied in writing. As illustrated, a stylus 4 extends through the said tubular writing point and upwardly through a. main air channel or .passage 5 located axlally in an air tube 6 suitably positioned'within the barrel 1 so as to provide concentric therewith an ink reservoir 7 within lsaid barrel 1. As shown, the air tube is connected to and extends parts in normal writing.
through a partition 8 at the upper end of the barrel between the ink reservoir` 7 and an air chamber 9 so as to permlt sald main air `that manual operation of the channel 5 in the tube 6 to communicate with the air chamber 9 which is provided with an opening or port 10 to the atmosphere. The stylus 4 after passing through the tubular point 3 and through said axial air channel 5 and through the air chamber 9, is connected at its upper end to a plunger 11 movable by a spring 14 and having an actuatlng portion 13 projecting above a plug 12. The plunger 11 is, as shown, provided with a pistonA 15 moving in the air chamber 9 so plunger 11 will force air from the, air chamber 9 through the air duct 5 to the point section of the ink reservoir, and a sprlng 14 is disposed in the air chamber between the partition 8 and'said piston so as normally when writing to retain the piston 15 against this plug 12 and the stylus 4 in fixed or immovable relationship to the tubular point 3, said stylus being so arranged that the outer end thereof will, when the piston is in the position just p described at its inward limit of movement,
and parallel to bear jointly with said tubular point'3xon the paper in writing. A Idownward movement of said piston will compress said spring an cause an outward movement of the stylus 4; but will enable the reciprocation of the stylus 4 through the passage 3a` n the point 3 to break any capillary seal and clean away any obstruction in said point, thus procuring v an initial su ply and iiowing of ink through the same. his movement of the piston 15 and stylus 4 is preferably effected by manual mani ulation or pressure upon the end 13 of the p unger 11.
yI also preferably provide in the air tube 6 an auxiliary air passage 16 extending from the lower portion of the air tube 6 upwardly the main air channel 5 and having an air port 16a communicating with the upper end of the ink chamber so that any vacuum which may be formed when the pencil is brought into vertical position for writing will be broken by the equalization of pressure behind the ink in said ink chamber 7. A cap 17 is provided with a cushion 18 of cork or other suitable material and the tubular point is preerabl forced into said cushion when the cap is p aced on the same and the pen is preferably carried in a position with the point extending downwardly.
Having described my invention, I claim 2- l1. A stylographic ink pencil comprising a body having an ink reservoir and a tubular writing point, an air chamber above said ink reservoir, an air tube having an air passage extendin from said air chamber downwardly t rough the ink reservoir to a place adjacent to the writing point; a stylus mounted in said tubular point and extending upwardly through said air passage and into said air chamber; a plunger connected to said stylus and movable in said air chamber, a suitable stop in said air chamber for v.through said axial said plunger; means for automatically forcing said stylus against said stop to move the .same into writing position and a finger-portion on said plunger to permit manual movement of the stylus outwardly beyond its writing position` 2.v A stylographic body having an ink reservoir and a tubu writing point, an air chamber above said ink reservoir, an lair tube having a passageextending from said air chamber downwardly through the ink reservoir to a place adjacent to the writing point and a piston movable in said air chamber.
3. A stylographic ink pencil comprising a body having an ink reservoir and a tubular writing point, an air chamber above said ink reservoir, an air tube having a passage extending rom said air chamber downwardly through the ink reservoir to a place adjacent to the writing point, and also having another nassage extending from its lower end ink pencil comprising a upwardly to and communicating with the upper end of the ink reservoir.
4. A stylographic ink pencil comprising a body having an ink reservoir and a tubular writing point, an air chamber above said ink 5. A stylographic ink pencil comprising a body having an ink reservoir and a tubular writing point, an reservoir, an air tube having an air passage located axially of said body and extending from said air chamber downwardly to the ink reservoir to a place adjacent [to the writing point, a stylus mounted in said tubular point and extending upwardly through said axial air passage and into said air chamber, a piston movable in said air chamber and connected to said stylus, a plunger connected to said piston and extending through the opposite end of the pencil body and means for automatically forcing the plunger and stylus against the upper end of said air chamber.
6. A stylographic ink pencil comprising a body having an ink reservoir and a tubular writing point, an air chamber above said ink'reservoir, an air tube having an air passage located axially of said body and extending from said air chamber downwardly to the ink reservoir to a place adjacent'to the writing point, and also having another passage extending from its lower end upwardly to and communicating with the upper end of the ink reservoir, a stylus mounted in said tubular point and extending #upwardly air passage and into said air chamber above said ink l air chamber, a piston movable in said air In Witness whereof, I have signed my chamber and connected to sald stylus, a, name to the foregolng speclcatlon 1n the plunger connected to sa1d p1ston and expresence of two subscrlbmg'wltnesses.
tending through the opposite end of the pen- HENRY A. SCHMIDT. cil body and means for automatically fore- Witnesses: ing the plunger and stylus against the upper HELEN V. WHIDDEN,
end of said air chamber. FREDERICK P. RANDOLPH.
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|US2617387 *||Jan 17, 1947||Nov 11, 1952||W A Sheaffer Pen Co||Writing instrument|
|US2805645 *||Mar 5, 1954||Sep 10, 1957||Paul Buschle||Tube writing pen for india ink|
|US3503693 *||Sep 26, 1968||Mar 31, 1970||Dike Inc||Drafting pen|
|US3545877 *||Dec 11, 1968||Dec 8, 1970||Dike Inc||Drafting pen with cleansing vent valve stem|
|US5172995 *||Apr 19, 1991||Dec 22, 1992||Koh-I-Noor Inc.||Plotter pen with coaxial reservoir|
|WO1985004375A1 *||Mar 28, 1985||Oct 10, 1985||Mazhar Shah||Correction fluid and dispenser|
|International Classification||B43K8/00, B43K8/16|