CA1285905C - Cartridge-type writing implement having internal valve - Google Patents
Cartridge-type writing implement having internal valveInfo
- Publication number
- CA1285905C CA1285905C CA000479808A CA479808A CA1285905C CA 1285905 C CA1285905 C CA 1285905C CA 000479808 A CA000479808 A CA 000479808A CA 479808 A CA479808 A CA 479808A CA 1285905 C CA1285905 C CA 1285905C
- Authority
- CA
- Canada
- Prior art keywords
- valve
- valve stem
- ink
- cartridge
- valve box
- 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 - Fee Related
Links
Landscapes
- Pens And Brushes (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
In an instrument for writing and/or painting and so on, an ink cartridge provided with a valve is inserted into a shaft sleeve of the instrument from its rear end to bring a valve stem of the valve into contact with an intermediate plate of the instrument which plate is provided with an ink passing hole adjacent to an ink absorber attached to a base end of a writing brush point, which valve stem is resiliently biased toward a valve closing position and is retracted to open the valve so as to permit a feeding of ink to the absorber when the cartridge is pushed into the shaft sleeve against a resilient biasing force acting on the valve stem by a knocking action of the cartridge.
In an instrument for writing and/or painting and so on, an ink cartridge provided with a valve is inserted into a shaft sleeve of the instrument from its rear end to bring a valve stem of the valve into contact with an intermediate plate of the instrument which plate is provided with an ink passing hole adjacent to an ink absorber attached to a base end of a writing brush point, which valve stem is resiliently biased toward a valve closing position and is retracted to open the valve so as to permit a feeding of ink to the absorber when the cartridge is pushed into the shaft sleeve against a resilient biasing force acting on the valve stem by a knocking action of the cartridge.
Description
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The present invention relates to an improvement of an instrument for writing and/or painting and so on, into which may be fed liquid material such as ink, paint, lubri-cant" adhesive, cosmetic liquid and the like. More particu-larly the instant instrument is one into which is fed liquid material such as: an ink and a paint which mainly contain, as their main element, a pigment having a large grain-size or a heavy grain-weight; an ink and a paint which have a high vis-cosity; a quick-drying type of an ink and the same type of a paint; a lubricant; an adhesive; or a cosmetic liquid. The usable liquid materials are hereinafter referred to as the specified liquid.
Hitherto, in this type of instrument for writing and/or painting and so on, it is known to feed an ink to a pen nib under the effect of an lnside pressure from an ink reser-voir portion of a pen after opening a valve by pressing the pen nib to correspondingly open the valve. However, since such an instrument requires pressing hard on its pen nib, the instrument is not adequate for a writing brush in which a point thereof must be kept in shape.
Further, it is also known that a positive pressure may be continuously applied to a liquid such as an lnk with the use of, for example, compressed air, or a vapor pressure of a volatile solvent. In this case, however, as for the above-mentioned specified liquid which requlres a high posi-tive pressure for feeding, since the amount of e~ected quan-tity thereof is not proportional to the value of the positive pressure of the same, such a continuously pressurized system is not adequate for the specified liquid.
, The present invention provides an instrument for writing and/or painting which resolves the above-mentioned disadvantages.
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According to the present invention therefore there is provided an lnstrument for writing and/or painting, wherein a cartridge for ink or like liquid is slidably inserted in a shaft sleeve having a writing point, said shaft sleeve also having a front portion for fixedly holding a front end of a valve stem of the cartridge, and a rear portion for accepting the cartridge therein, said cartridge comprising a bottle containing ink or like liquid, said bottle having a valve box disposed at an open-ing portion thereof, said valve bo~ having an inlet opening com-municating with the inside of said bottle and an outlet openingcommunicating with the outside thereof; said valve stem having a lower cylindrical front end and an upper rod-like end, said valve stem pro~ecting through said outlet opening of said valve box such that said valve stem is axially slidable with respect to said valve box, said valve stem having an end opening on said cylindrical front end which is in communication with said writing point, said valve stem also having a piston portion on the upper rod-like end, operable as a piston within said valve box, a com-munication hole being provided in the wall of said cylindrlcal end between front said end opening and said plston portion; a spring means for biasing said valve stem toward the outlet open-ing of said valve box; a valve seat disposed within said valve box, such that when said valve stem is biased at lts farthest position toward the outlet opening of said valve box, sald commu-nication hole is cut-off from the inlet opening of sald valve box, and when said valve stem is contracted toward the lnterior of said bottle against the biasing force of said sprlng means, said communication hole is in communication with said inlet opening to allow lnk to flow to sald wrltlng point, and wherein sald piston portion operates wlth said valve box as a piston/
cylinder/combination to force ink toward sald writing point as the spring means moves said valve stem toward said writlng point;
and a seal disposed between said inlet openlng and the cylindrl-cal end of said valve stem for provlding a seal therebetween.
Thus, in the instrument of the present lnvention a car-.. ~ . . .. . . . ... .
1~8~90~i tridge for ink and simllar liquid is slidably lnserted in a shaft sleeve provided with a writing point, such as a writing brush point, a pen nib, a painting brush point or the like. The shaft sleeve further includes a portion for fixedly hold~ng a front end of a valve stem retractable toward the portion such as the writ-ing brush point, the pen nib, the painting brush point or the like, and a portion for forcibly inserting a tail end of the car-tridge directly or indirectly into a rear end of the shaft sleeve. The cartridge includes a bottle having within its inlet/
0 outlet portion a valve box, an inlet and an outlet of whlch open to the inside and the outside of the bottle respectively; a valve stem which has a pipe-like shape in its outer half and a solid rod-like shape in its inner half, and slidably penetrates through the valve box to pro~ect its outer end from an inlet of the valve box and to pro~ect its inner end from a hole provided in a bottom portion of the valve box; a valve seat and a valve body provided inside the inlet of the valve box and in a middle portion of the valve stem respectively to be brought into contact with each other when the valve box is moved backward and to be separated from each other when the valve box is moved forward; a communica-tion hole provided in a wall of the pipe-like portion of the valve stem so as to be placed outside the valve seat when the valve body is seated in the valve seat and inside the valve seat when the valve body is separated from the valve seat; a spring for urging the valve body toward its seating position, and a seal for sealing an opening edge of the lnlet of the valve body.
The present invention will be further illustrated by way of the accompanying drawings, in which:-Fig.s 1 and 2 are longitudinal cross-sectional views of the instrument for writing and/or painting of an embodiment of the present invention wherein Fig. 2 is a cross-sectional view showing a condition in which the cartridge 20 shown in Fig. 1 is forcibly inserted.
, .
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. -~28S90.~i In Figs. 1 and 2, a writing point 2' such as a writing brush point is connected to a front end of the shaft sleeve 1 through the mouthpiece member 2. A base end of the writing brush point 2', which base end extends into the mouthpiece member 2 is force fitted into an ink absorber 3 to retain the point 2' in the mouth piece member 2. The ink absorber 3 is retained by an lntermediate plate 4 having an upside-down saucer shape. In the central portion of intermediate plate 4 a communication hole 5 is provided for communicating an upper surface of the ink absorber 3 with the inside of the shaft sleeve 1. On the other hand, a sleeve-like element 8 having a bottom is provided with an ink passing hole 7 communicating the inside of the sleeve-like element 8 with the outside of the same 8 in its peripheral wall near the bottom thereof. Sleeve-like element 8 is inserted in an opening of the ink bottle 9 to be fixed thereto through a flange 8' integrally provided in an opening edge of the sleeve-like element 8 so that the sleeve-like element 8 is prevented from dropping into the ink bottle 9. The opening of the bottle 9 is threadably connected to a screw cap 10 for closing the openings of the ink bottle 9 and the sleeve-like element 8 to form a valve box/cylinder 11 which a valve stem/piston rod 12 is provided in a penetrating manner, and an outer half of rod 12 has a pipe-like shape and an inner half has a solid rod-like shape. Both inner and outer ends of valve stem/piston rod 12 are slidably inserted in shaft holes 13 and 13', respectively. An intermediate portion of valve stem/piston rod 12 is lntegrally provided wlth a valve body/piston 14. A ring member 15 having a doughnut-like shape is clamped between an inside of the screw cap 10 and the above flange 8'. A valve seat 16 is formed inside the shaft hole 13 ln the screw cap 10. An ink communication hole 17' is provided in a wall of the pipe-like portion 17 of the valve stem/piston rod 12, so as to be placed outside the valve seat 16 when the valve body/piston 14 is seated in the valve seat 16 and inside the valve seat 16 when the valve body/piston 14 is separated from the valve seat 16. A coil spring 18 is interposed between a back - . ,. . ~" , . - .
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surface of the valve body/piston 14 and the sleeve-like element 8 to urge the valve body/piston 14 toward its seating position. A
seal 19 is provided inside the screw cap 10 to seal a clearance between the shaft hole 13 provided in the screw cap 10 and the valve stem/piston rod 12. An ink cartridge 20 provided with a valve is constructed as mentioned above. In use, such a cartridge 20 is inserted into the shaft sleeve 1 from its tail end so that the pipe-like portion 17 is force fitted into the communication hole 5 and remains part of the mouthpiece member assembly thereby allowing the pipe-like portion to pass freely through the shaft hole 13 of the cartridge. Then the tail end surface of the cartridge 20 is pressed down by the user's finger so that the cartridge 20 is lowered in the shaft sleeve 1 except its valve stem/piston rod 12 and its valve body/piston 14 to open the valve of the cartridge 20. When the pressing-down; operation of the tail end surface to the cartridge 20 is released, the valve body/piston 14 applies a positive pressure to the ink remaining inside the valve box/cylinder 11 so that the ink is fed to the writing brush point 2'.
Incidentally, in Fig. 2, the reference numeral 22 designates a portion of the liquid such as ink to be e~ected by one stroke of the p~essing-down operation of the cartridge 20.
Since the present invention is constructed as mentioned above, it is possible to wet the portion such as the writing brush point, the pen nib, the painting brush point and the like with the liquid such as ink to the extent that the brush point is adequately moistened in use by repeatedly and alternately applying the pressing-down operation and its releasing operation of the tail end surface of the cartridge 20. Especially, in feeding the liquid such as ink, since it is not necessary to press down the portion such as the writing brush point, the pen ;' ` . ' `, ' ~ - ' ' :
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nib, the painting brush point and the like against other things, there is not any fear that such portion is damaged.
In the present invention, it is possible to employ an indirect pressing-down construction such as a knock-pin and a push-button as a means for pressing down the tail end surface of ~ ::
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the cartridge. Further, it is possible in working the present inv~ntion to provide separately the vàlve body and a piston in two-stage arrangement in the valve stem/plston rod.
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The present invention relates to an improvement of an instrument for writing and/or painting and so on, into which may be fed liquid material such as ink, paint, lubri-cant" adhesive, cosmetic liquid and the like. More particu-larly the instant instrument is one into which is fed liquid material such as: an ink and a paint which mainly contain, as their main element, a pigment having a large grain-size or a heavy grain-weight; an ink and a paint which have a high vis-cosity; a quick-drying type of an ink and the same type of a paint; a lubricant; an adhesive; or a cosmetic liquid. The usable liquid materials are hereinafter referred to as the specified liquid.
Hitherto, in this type of instrument for writing and/or painting and so on, it is known to feed an ink to a pen nib under the effect of an lnside pressure from an ink reser-voir portion of a pen after opening a valve by pressing the pen nib to correspondingly open the valve. However, since such an instrument requires pressing hard on its pen nib, the instrument is not adequate for a writing brush in which a point thereof must be kept in shape.
Further, it is also known that a positive pressure may be continuously applied to a liquid such as an lnk with the use of, for example, compressed air, or a vapor pressure of a volatile solvent. In this case, however, as for the above-mentioned specified liquid which requlres a high posi-tive pressure for feeding, since the amount of e~ected quan-tity thereof is not proportional to the value of the positive pressure of the same, such a continuously pressurized system is not adequate for the specified liquid.
, The present invention provides an instrument for writing and/or painting which resolves the above-mentioned disadvantages.
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According to the present invention therefore there is provided an lnstrument for writing and/or painting, wherein a cartridge for ink or like liquid is slidably inserted in a shaft sleeve having a writing point, said shaft sleeve also having a front portion for fixedly holding a front end of a valve stem of the cartridge, and a rear portion for accepting the cartridge therein, said cartridge comprising a bottle containing ink or like liquid, said bottle having a valve box disposed at an open-ing portion thereof, said valve bo~ having an inlet opening com-municating with the inside of said bottle and an outlet openingcommunicating with the outside thereof; said valve stem having a lower cylindrical front end and an upper rod-like end, said valve stem pro~ecting through said outlet opening of said valve box such that said valve stem is axially slidable with respect to said valve box, said valve stem having an end opening on said cylindrical front end which is in communication with said writing point, said valve stem also having a piston portion on the upper rod-like end, operable as a piston within said valve box, a com-munication hole being provided in the wall of said cylindrlcal end between front said end opening and said plston portion; a spring means for biasing said valve stem toward the outlet open-ing of said valve box; a valve seat disposed within said valve box, such that when said valve stem is biased at lts farthest position toward the outlet opening of said valve box, sald commu-nication hole is cut-off from the inlet opening of sald valve box, and when said valve stem is contracted toward the lnterior of said bottle against the biasing force of said sprlng means, said communication hole is in communication with said inlet opening to allow lnk to flow to sald wrltlng point, and wherein sald piston portion operates wlth said valve box as a piston/
cylinder/combination to force ink toward sald writing point as the spring means moves said valve stem toward said writlng point;
and a seal disposed between said inlet openlng and the cylindrl-cal end of said valve stem for provlding a seal therebetween.
Thus, in the instrument of the present lnvention a car-.. ~ . . .. . . . ... .
1~8~90~i tridge for ink and simllar liquid is slidably lnserted in a shaft sleeve provided with a writing point, such as a writing brush point, a pen nib, a painting brush point or the like. The shaft sleeve further includes a portion for fixedly hold~ng a front end of a valve stem retractable toward the portion such as the writ-ing brush point, the pen nib, the painting brush point or the like, and a portion for forcibly inserting a tail end of the car-tridge directly or indirectly into a rear end of the shaft sleeve. The cartridge includes a bottle having within its inlet/
0 outlet portion a valve box, an inlet and an outlet of whlch open to the inside and the outside of the bottle respectively; a valve stem which has a pipe-like shape in its outer half and a solid rod-like shape in its inner half, and slidably penetrates through the valve box to pro~ect its outer end from an inlet of the valve box and to pro~ect its inner end from a hole provided in a bottom portion of the valve box; a valve seat and a valve body provided inside the inlet of the valve box and in a middle portion of the valve stem respectively to be brought into contact with each other when the valve box is moved backward and to be separated from each other when the valve box is moved forward; a communica-tion hole provided in a wall of the pipe-like portion of the valve stem so as to be placed outside the valve seat when the valve body is seated in the valve seat and inside the valve seat when the valve body is separated from the valve seat; a spring for urging the valve body toward its seating position, and a seal for sealing an opening edge of the lnlet of the valve body.
The present invention will be further illustrated by way of the accompanying drawings, in which:-Fig.s 1 and 2 are longitudinal cross-sectional views of the instrument for writing and/or painting of an embodiment of the present invention wherein Fig. 2 is a cross-sectional view showing a condition in which the cartridge 20 shown in Fig. 1 is forcibly inserted.
, .
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. -~28S90.~i In Figs. 1 and 2, a writing point 2' such as a writing brush point is connected to a front end of the shaft sleeve 1 through the mouthpiece member 2. A base end of the writing brush point 2', which base end extends into the mouthpiece member 2 is force fitted into an ink absorber 3 to retain the point 2' in the mouth piece member 2. The ink absorber 3 is retained by an lntermediate plate 4 having an upside-down saucer shape. In the central portion of intermediate plate 4 a communication hole 5 is provided for communicating an upper surface of the ink absorber 3 with the inside of the shaft sleeve 1. On the other hand, a sleeve-like element 8 having a bottom is provided with an ink passing hole 7 communicating the inside of the sleeve-like element 8 with the outside of the same 8 in its peripheral wall near the bottom thereof. Sleeve-like element 8 is inserted in an opening of the ink bottle 9 to be fixed thereto through a flange 8' integrally provided in an opening edge of the sleeve-like element 8 so that the sleeve-like element 8 is prevented from dropping into the ink bottle 9. The opening of the bottle 9 is threadably connected to a screw cap 10 for closing the openings of the ink bottle 9 and the sleeve-like element 8 to form a valve box/cylinder 11 which a valve stem/piston rod 12 is provided in a penetrating manner, and an outer half of rod 12 has a pipe-like shape and an inner half has a solid rod-like shape. Both inner and outer ends of valve stem/piston rod 12 are slidably inserted in shaft holes 13 and 13', respectively. An intermediate portion of valve stem/piston rod 12 is lntegrally provided wlth a valve body/piston 14. A ring member 15 having a doughnut-like shape is clamped between an inside of the screw cap 10 and the above flange 8'. A valve seat 16 is formed inside the shaft hole 13 ln the screw cap 10. An ink communication hole 17' is provided in a wall of the pipe-like portion 17 of the valve stem/piston rod 12, so as to be placed outside the valve seat 16 when the valve body/piston 14 is seated in the valve seat 16 and inside the valve seat 16 when the valve body/piston 14 is separated from the valve seat 16. A coil spring 18 is interposed between a back - . ,. . ~" , . - .
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surface of the valve body/piston 14 and the sleeve-like element 8 to urge the valve body/piston 14 toward its seating position. A
seal 19 is provided inside the screw cap 10 to seal a clearance between the shaft hole 13 provided in the screw cap 10 and the valve stem/piston rod 12. An ink cartridge 20 provided with a valve is constructed as mentioned above. In use, such a cartridge 20 is inserted into the shaft sleeve 1 from its tail end so that the pipe-like portion 17 is force fitted into the communication hole 5 and remains part of the mouthpiece member assembly thereby allowing the pipe-like portion to pass freely through the shaft hole 13 of the cartridge. Then the tail end surface of the cartridge 20 is pressed down by the user's finger so that the cartridge 20 is lowered in the shaft sleeve 1 except its valve stem/piston rod 12 and its valve body/piston 14 to open the valve of the cartridge 20. When the pressing-down; operation of the tail end surface to the cartridge 20 is released, the valve body/piston 14 applies a positive pressure to the ink remaining inside the valve box/cylinder 11 so that the ink is fed to the writing brush point 2'.
Incidentally, in Fig. 2, the reference numeral 22 designates a portion of the liquid such as ink to be e~ected by one stroke of the p~essing-down operation of the cartridge 20.
Since the present invention is constructed as mentioned above, it is possible to wet the portion such as the writing brush point, the pen nib, the painting brush point and the like with the liquid such as ink to the extent that the brush point is adequately moistened in use by repeatedly and alternately applying the pressing-down operation and its releasing operation of the tail end surface of the cartridge 20. Especially, in feeding the liquid such as ink, since it is not necessary to press down the portion such as the writing brush point, the pen ;' ` . ' `, ' ~ - ' ' :
, .
lX8590.r;
nib, the painting brush point and the like against other things, there is not any fear that such portion is damaged.
In the present invention, it is possible to employ an indirect pressing-down construction such as a knock-pin and a push-button as a means for pressing down the tail end surface of ~ ::
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the cartridge. Further, it is possible in working the present inv~ntion to provide separately the vàlve body and a piston in two-stage arrangement in the valve stem/plston rod.
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Claims
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. An instrument for writing and/or painting, wherein a cartridge for ink or like liquid is slidably inserted in a shaft sleeve having a writing point, said shaft sleeve also hav-ing a front portion for fixedly holding a front end of a valve stem of the cartridge, and a rear portion for accepting the car-tridge therein, said cartridge comprising a bottle containing ink or like liquid, said bottle having a valve box disposed at an opening portion thereof, said valve box having an inlet opening communicating with the inside of said bottle and an outlet open-ing communicating with the outside thereof; said valve stem hav-ing a lower cylindrical front end and an upper rod-like end, said valve stem projecting through said outlet opening of said valve box such that said valve stem is axially slidable with respect to said valve box, said valve stem having an end opening on said cylindrical front end which is in communication with said writing point, said valve stem also having a piston portion on the upper rod-like end, operable as a piston within said valve box, a com-munication hole being provided in the wall of said cylindrical end between front said end opening and said piston portion; a spring means for biasing said valve stem toward the outlet open-ing of said valve box; a valve seat disposed within said valve box, such that when said valve stem is biased at its farthest position toward the outlet opening of said valve box, said commu-nication hole is cut-off from the inlet opening of said valve box, and when said valve stem is contracted toward the interior of said bottle against the biasing force of said spring means, said communication hole is in communication with said inlet open-ing to allow ink to flow to said writing point, and wherein said piston portion operates with said valve box as a piston/ cylin-der/combination to force ink toward said writing point as the spring means moves said valve stem toward said writing point; and a seal disposed between said inlet opening and the cylindrical end of said valve stem for providing a seal therebetween.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000479808A CA1285905C (en) | 1985-04-23 | 1985-04-23 | Cartridge-type writing implement having internal valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000479808A CA1285905C (en) | 1985-04-23 | 1985-04-23 | Cartridge-type writing implement having internal valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1285905C true CA1285905C (en) | 1991-07-09 |
Family
ID=4130330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000479808A Expired - Fee Related CA1285905C (en) | 1985-04-23 | 1985-04-23 | Cartridge-type writing implement having internal valve |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1285905C (en) |
-
1985
- 1985-04-23 CA CA000479808A patent/CA1285905C/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |