US3771166A - Pen tip construction forming secondary ink reservoir - Google Patents
Pen tip construction forming secondary ink reservoir Download PDFInfo
- Publication number
- US3771166A US3771166A US00274246A US3771166DA US3771166A US 3771166 A US3771166 A US 3771166A US 00274246 A US00274246 A US 00274246A US 3771166D A US3771166D A US 3771166DA US 3771166 A US3771166 A US 3771166A
- Authority
- US
- United States
- Prior art keywords
- pen tip
- pen
- inking
- chamber
- mounting chamber
- 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
- B43K1/00—Nibs; Writing-points
- B43K1/12—Writing-points comprising fibres; Felt pads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43K—IMPLEMENTS FOR WRITING OR DRAWING
- B43K8/00—Pens with writing-points other than nibs or balls
- B43K8/02—Pens with writing-points other than nibs or balls with writing-points comprising fibres, felt, or similar porous or capillary material
Definitions
- This invention relates to capillary feed inking systems used with a wide variety of recorder apparatuses in drawing fine lines on timed or stationary, drum or circular recorder charts. Specific inking systems and pen head structures are disclosed in the aforementioned United States patents and copending US applications.
- the inking pen used in such systems comprises a capillary pen tube, connected to a source of ink by a thin,
- Dependable flow action and easy replacement of one or more parts of the inking pen assembly are desired features in this field.
- Dependable flow action is achieved by provision of a secondary ink reservoir immediately above the pen tip. I-Ieretofore, such reservoirs have beenformed entirely within the pen tip mounting chamber, as disclosed in the above mentioned reIated'UQS. Pat. Nos. 3,644,933 and 3,653,070, and in US. Pat. No. 3,653,070, or entirely within the top of the pen tip, as disclosed in my above mentioned copending US application Ser. No. 243,004.
- the present invention provides such a reservoir formed partially by the pen tip upper end and partially by its mounting chamber, without need of special machining or forming of the chamber. Additionally, the pen tip is friction fitted into its mounting chamber for easy replacement.
- Yet another object of the invention is to reduce the cost of manufacture of secondary ink reservoir type inking pens by providing structure forming such a reservoir without need of special maching or forming of the pen tip mounting chamber.
- the inking pen system to which the instant invention is directed includes an ink' bottle or container 10 retained on a steel wire hanger 12 by means of an encircling band or clip 14.
- the bottle 10 may be made of resilient plastic and in cooperation with clip 14 is vertically adjustable along the length of hanger 12 to enable proper ink flow.
- a bottle stopper 16 supports a vertically disposed capillary stinger 18 which projects downwardly into the bottle 10.
- a suitable length of fine diameter, extremely flexible plastic tubing 20 transfers ink from bottle 10 to the inking pen 22, and more specifically from stinger 18 to pen tube 24.
- both stinger l8 and pen tube 24 are made of stainless steel capillary tubing of extremely small dimensions (0.0355 O.D. X 0.023 inches I.D.) while plastic tubing 20 is made of Tygon plastic (0.059 O.D. X 0.028
- Pen tube 24 is bent through an angle of approximately at 26 and terminates in an inking pen head structure which basically comprises a pen tip mounting chamber 28 having a'pen tip 30 insertedor spigotted up into the bottom thereof.
- a secondary ink reservoir 32 is provided by shaped upper end 34 of pen tip 30 and the pen tip mounting chamber 28, between end 34 and ink inlet end 36 of pen tip mounting chamber 28. Further details of the pen tip shaped upper end 34 are set forth in detail below.
- the portions of the circular chart recorder shown include an operating recorder arm 38 and circular chart 40, which in a conventional installation is rotated by a timed drive and produces a timed recording in conjunction with movement of recorder arm 38 responsive to some condition being recorded.
- recorder arm 38 comprises a flat, thin elongate stainless steel leaf spring extension 42 removably secured to the main body of recorder arm 34 by means of a thumb screw 44 engaging bifurcated end 46 of spring extension 42.
- a location pin 48 assures lateral stability of the structure.
- Adjustment assembly 50 for precise calibration of the recorder apparatus with respect to the chart.
- Assembly 50 includes a micrometer screw 52 threaded 3 through a post 54 to laterally adjust spring extension 42 and a pivot 56. Further details of this precise structure are adequately set forth in prior U.S. Pat. Nos. 2,752,220 and 3,264,652.
- pen tip mounting chamber 28 comprises a single machined element of tubular steel bonded to the lower terminal end of pen tube 24 by silver solder 58, at the ink inlet end 36 of chamber 28.
- pen tip 30 comprises a bundle of stranded materiaLinherently defining a multitude of extremely fine capillary ink passageways oriented vertically from upper end 34 to writing surface contact area 60.
- the material may be a stranded synthetic material such as nylon, or compressed bamboo fibers.
- the pen tip may be formed of a solid synthetic material such as nylon (FIG. 3, numeral 30a) and have a hairline capillary ink passageway 62 formed vertically concentrically therewithin.
- a fiber pen tip may also have such a passageway formed therein which in this case will be of greaater diameter than the capillary passageways inherently formed in the fibrous material constituting the pen tip 30.
- the ink reservoir provides a secondary, ready supply of ink in a capillary ink flow system which minimizes the possibilities of ink blockage by drying in-the system by providing a supply of liquid ink immediately above and therefore adjacent to the writing pen tip of the inking system.
- a conical recess 66 is machined or formed in the upper end 34 of a fiber pen tip 30 to provide the substantial portion of desired secondary ink reservoir 32, the remainder of the reservoir being defined by the upper internal portion of mounting chamber 28.
- a significant feature of this invention is a less expensive procedure involving at least one simple external cut such as illustrated in FIGS. 5 and 6 at 68.
- the angle cut at tip upper end 34 forms a flat planar surface 68 which, together with a substantial portion of the interior surface of mounting chamber 28, forms the desired ink reservoir 32. Because of the angle cut, insertion of pen tip 30 into its mounting chamber 28 is limited by the high end of the cut 70, thereby eliminating need of any shoulder or other means to limit insertion of the pen tip into its mounting chamber.
- a pen tip mounting bushing 72 may be provided to prevent crushing of the delicate internal microcapillary passageways of the fiber pen tip 30 during insertion. Full details of bushing 72 are set forth in greater detail in my above mentioned copending application Ser. No. 222,047. Although cut 68 has been set forth as a flat planar cut, obviously any inexpensive external angled cut may be used to assure the formation of a secondary ink reservoir within the pen tip mounting chamber 28.
- An inking pen for use with recording apparatus and having a pen head assembly comprising a pen tip mounting chamber, a pen tip inserted through the bottom of and into said chamber, means defining an ink inlet in said chamber arranged for fluid communication with an ink supply, and means defining a secondary ink reservoir within said chamber comprising: a substantial portion of the interior surface of said mounting chamber; and means defining an external angular cut in the upper end of said pen tip, the surface of said cut being angled with respect to and intersecting the long axis of said mounting chamber with a portion of said out upper pen tip end abutting the upper interior of said pen tip mounting chamber, offset from said ink inlet and a portion of said cut upper pen tip end abutting the interior of said chamber substantially mesially thereof to form, in conjunction with said mounting chamber interior surface substantial portion, said secondary ink reservoir, whereby the upper terminal portion of said angularly cut pen tip end abutting the upper end of the chamber assures the integrity of said secondary ink reservoir upon insertion of said pen tip
- said pen tip mounting chamber comprises an internally cylindrical shell having an upper frusto-conical end tapering upwardly inwardly from said shell to said ink inlet.
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- Pens And Brushes (AREA)
Abstract
Description
Claims (7)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US27424672A | 1972-07-24 | 1972-07-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3771166A true US3771166A (en) | 1973-11-06 |
Family
ID=23047417
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00274246A Expired - Lifetime US3771166A (en) | 1972-07-24 | 1972-07-24 | Pen tip construction forming secondary ink reservoir |
Country Status (1)
Country | Link |
---|---|
US (1) | US3771166A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4207581A (en) * | 1978-06-23 | 1980-06-10 | Graphic Controls Corporation | Recording instrument marker mounting assembly and precision adjustment control knob therefor |
US4663639A (en) * | 1983-03-25 | 1987-05-05 | Imperial Chemical Industries Plc | Printer |
US5851079A (en) * | 1996-10-25 | 1998-12-22 | The Procter & Gamble Company | Simplified undirectional twist-up dispensing device with incremental dosing |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US535588A (en) * | 1895-03-12 | Peter d | ||
US2416596A (en) * | 1944-02-04 | 1947-02-25 | Rosenthal Sidney | Fountain pen |
US3644933A (en) * | 1969-05-26 | 1972-02-22 | Aubrey R Tullos | Reservoir-type inking pen system |
-
1972
- 1972-07-24 US US00274246A patent/US3771166A/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US535588A (en) * | 1895-03-12 | Peter d | ||
US2416596A (en) * | 1944-02-04 | 1947-02-25 | Rosenthal Sidney | Fountain pen |
US3644933A (en) * | 1969-05-26 | 1972-02-22 | Aubrey R Tullos | Reservoir-type inking pen system |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4207581A (en) * | 1978-06-23 | 1980-06-10 | Graphic Controls Corporation | Recording instrument marker mounting assembly and precision adjustment control knob therefor |
US4663639A (en) * | 1983-03-25 | 1987-05-05 | Imperial Chemical Industries Plc | Printer |
US5851079A (en) * | 1996-10-25 | 1998-12-22 | The Procter & Gamble Company | Simplified undirectional twist-up dispensing device with incremental dosing |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: TULLOS, MIKE S.,TEXAS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:TULLOS MADGE S INDIVIDUALLY AND AS INDEPEDENT EXECUTRIX OF ESTATE OF A R TULLOS DECEASED;REEL/FRAME:003999/0315 Effective date: 19820413 Owner name: TULLOS MIKE S HARRIS COUNTY TX Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:TULLOS MADGE S INDIVIDUALLY AND AS INDEPEDENT EXECUTRIX OF ESTATE OF A R TULLOS DECEASED;REEL/FRAME:003999/0315 Effective date: 19820413 |
|
AS | Assignment |
Owner name: TULLOS, MIKE S.; HARRIS COUNTY, TX. Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:FIRST NATIONAL BANK OF MIDLAND, TX.;TULLOS, MADGE S.;REEL/FRAME:004066/0057 Effective date: 19820413 |
|
AS | Assignment |
Owner name: TULLOS, MADGE, S., BROWNSVILLE, TEXAS, CO-TRUSTEES Free format text: ASSIGNMENT OF 1/4 OF ASSIGNORS INTEREST;ASSIGNOR:TULLOS, MIKE S.;REEL/FRAME:004689/0995 Effective date: 19861209 Owner name: FIRST CITY NATIONAL BANK OF MIDLAND, BROWNSVILLE, Free format text: ASSIGNMENT OF 1/4 OF ASSIGNORS INTEREST;ASSIGNOR:TULLOS, MIKE S.;REEL/FRAME:004689/0995 Effective date: 19861209 |