CA1291965C - Brush-like writing instrument - Google Patents
Brush-like writing instrumentInfo
- Publication number
- CA1291965C CA1291965C CA000500109A CA500109A CA1291965C CA 1291965 C CA1291965 C CA 1291965C CA 000500109 A CA000500109 A CA 000500109A CA 500109 A CA500109 A CA 500109A CA 1291965 C CA1291965 C CA 1291965C
- Authority
- CA
- Canada
- Prior art keywords
- liquid
- writing instrument
- brush point
- mouthpiece
- brush
- 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
Classifications
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B11/00—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water
- A46B11/001—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water with integral reservoirs
- A46B11/0013—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water with integral reservoirs dispensing by gravity or by shaking
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
- A45D34/00—Containers or accessories specially adapted for handling liquid toiletry or cosmetic substances, e.g. perfumes
- A45D34/04—Appliances specially adapted for applying liquid, e.g. using roller or ball
- A45D34/042—Appliances specially adapted for applying liquid, e.g. using roller or ball using a brush or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
- B05C17/002—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces with feed system for supplying material from an external source; Supply controls therefor
-
- 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
- B43K5/18—Arrangements for feeding the ink to the nibs
- B43K5/1818—Mechanical feeding means, e.g. valves; Pumps
- B43K5/1827—Valves
- B43K5/1836—Valves automatically closing
- B43K5/1863—Valves automatically closing opened by actuation of the rear-side of the pen
- B43K5/1872—Valves automatically closing opened by actuation of the rear-side of the pen mounted on ink-cartridges
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pens And Brushes (AREA)
- Coating Apparatus (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
The invention provides a writing instrument for spe-cific liquid which has an air introducing passage for the required amount of external air from outside the instrument by sucking action of a valve body/piston. The invention also pro-vides a writing instrument for a specific liquid which has a liq-uid passage for supplying the liquid at all times from a liquid reservoir having multiple liquid passage holes which are longitu-dinally elongated and spaced apart from each other to a brush point through a liquid supply cylinder located between the reser-voir and a brush point which has liquid outlets at a peripheral wall thereof, so that at least one of the holes and outlets is always aligned to let the liquid through. The invention again provides a writing instrument for a specific liquid which has a mouth element and a mouthpiece member and a liquid reservoir which has a valve box/cylinder and is connected with the mouth element having a packing having a concave portion which forms a cavity adjacent to a wall surface of the packing groove; and the invention again provides a writing instrument for a specific liq-uid having a cap over a brush point, said cap being adapted to detach from the brush point and be inserted into a concave por-tion of upper portion of a shaft sleeve so that a lower end of the cap may be placed on an upper end of an ink bottle or piston stem thereby supplementing the knocking movement.
The invention provides a writing instrument for spe-cific liquid which has an air introducing passage for the required amount of external air from outside the instrument by sucking action of a valve body/piston. The invention also pro-vides a writing instrument for a specific liquid which has a liq-uid passage for supplying the liquid at all times from a liquid reservoir having multiple liquid passage holes which are longitu-dinally elongated and spaced apart from each other to a brush point through a liquid supply cylinder located between the reser-voir and a brush point which has liquid outlets at a peripheral wall thereof, so that at least one of the holes and outlets is always aligned to let the liquid through. The invention again provides a writing instrument for a specific liquid which has a mouth element and a mouthpiece member and a liquid reservoir which has a valve box/cylinder and is connected with the mouth element having a packing having a concave portion which forms a cavity adjacent to a wall surface of the packing groove; and the invention again provides a writing instrument for a specific liq-uid having a cap over a brush point, said cap being adapted to detach from the brush point and be inserted into a concave por-tion of upper portion of a shaft sleeve so that a lower end of the cap may be placed on an upper end of an ink bottle or piston stem thereby supplementing the knocking movement.
Description
ti5 The present invention relates to a brush-like writing instrument (hereinafter referred to as writing instrument) which ls suitable for writing or applying a liquid having higher vis-cosity (hereinafter referred to as a specific liquid) such as ink or paint mainly composed of a pigment, of large or heavy part-lcles, ink or paint having higher viscosity, a quick-dry ink or paint, a lubricating oil, adhesives or a cosmetic liquid.
Hitherto, since the specific liquid is viscous and/or is liable to quick-drying due to solvents, the usual type of writing instrument cannot be used without certain modifications or improvements. That is, the specific liquid is liable to clog in an ink passage, or at an opening end of the ink reservoir. It is, therefore, neccssary to improve, for example, the flow of the specific liquid for evaporation during storage and use thereof.
The present invention provides a writing instrument which smoothly supplies a specific liquid to the top part of pen or brush without clogging of the liquid flow during use.
The present invention also provides a writing instru-ment which has a safeguard to prevent accidental movement of the knocking part and supply of the specific liquid to the top part of the instrument during transport, storing and handling thereof.
According to the first aspect of the present invention there is provided a writing instrument for specific liquid which has an air introducing passage for the required amount of air from the exterior of the instrument by a sucking action of a valve body/position. Suitably the air introducing passage com-prises a clearance, a longitudinal groove, a lateral groove, an annular groove, a cross groove, an ink conduit and ink outlets.
According to the second aspect of the present invention there is provided a writing instrument for a specific liquid which has a liquid passage for supplying the liquid at all times A
1 ~ 91 ~t,~i from an ink reservoir to a brush point through a liquid supply cylinder in which the liquid reservoir provided multiple llquld passage holes longitudinally elongated and spaced apart from each other, and the liquid supply cylinder located between the reser-volr and a brush point, provides liquid outlets at a peripheralwall thereof, so that at least one of the holes and outlets may always be aligned to let the llquid through. Suitably three lon-gitudinally elongated liquid passage holes are provided.
According to a third aspect of the present invention there is provided a writing instrument for a specific liquid com-prising a liquid reservoir having a valve box/cylinder, a mouth element and mouth piece member, in which a liquid reservoir is connected with mouth element interposed with a packing havlng a concave portion which forms a cavity adjacent to a wall surface of the packing groove. Suitably the packing is in a doughnut-like shape.
According to the fourth aspect of the present invention there is provided a writing instrument for a specific liquid hav-ing a cap over a brush point, said cap being adapted to detach from the brush point and insert into a concave portlon of an upper portion of a shaft sleeve so that a lower end of the cap may be placed on an upper end of an lnk bottle or piston stem thereby supplementlng knocklng movement.
In the accompanying drawings which illustrate an embod-lment of the present invention, Fig.s 1-7 show the writing instrument containing the specific liquid in a cartridge, and Fig. 8 shows the writing instrument containing the specific liquid in the body thereof, liquid being supplied to the top by virtue of a piston means. In particular:
Fig. l is a longitudinal sectional view through the brush-like writlng lnstrument of the present invention;
t;5 Fig. 2 is an exploded perspective view of the same;
Fig. 3 is a cross-sectional view taken along the line A-~ of Fig. l;
Fig. 4 is a longitudinal view of the brush-like writing instrument in a condition that a knocking operation thereof is completed;
Fig. 5 is a longitudinal sectional view of the brush-like writing instrument in a condition that the knocking opera-tion is completely released; and Fig. 6 is a longitudinal sectional view of the writing instrument in a condltion that the knocking operation thereof is stopped halfway.
Fig. 7 is a cross-sectional view taken along the line B-B of Fig. l; and Fig. 8 is a longitudinal sectional view of the writing instrument which contalns specific liquid in the body thereof according to the present invention.
In order to overcome above first drawbacks the writing instrument according to the present invention, there is to pro-vide several improvements for easily feeding the specific liquid to the brush point as stated below. (l) The writing instrument provides air-introducing passages which forcedly introduce air from the exterior of the instrument so as to smoothly supply the specific liquid from the storage part thereof to the top of the brush point without causing the specific liquid at a passage in the writing instrument. (2) The writing instrument also provides a specific liquid passage which comprises longitudinally elon-gated liquid passage holes and outlets in a peripheral wall ofcylinder, and the relative positions between the holes and out-1~6,~1~t~`~
lets being so arranged that at least one of the holes and outletsmay be aligned to let the llquid through at any angle of rota-tlon. ~3) The writing instrument further provides a sealing means comprising a packing at the rear end of the piston rod or openiny of the liquid bottle in order to seal an opening of the llquid bottle or the passage hole in a position rod or stem. In the packing a concave portion is provided so that a gap may be formed when it is placed on the packing groove.
Furthermore, in the writing instrument according to the present invention there is to provide a means for forcedly feed-ing the specific liquid which has a safeguard against leaking of the specific liquid from the writing instrument during storage, shipping and use as stated below. (4) The writing instrument provides a guard such as cap, to the brush point which is capable of being removed and fixed into the rear concave end of the writ-ing instrument, having sufficient length to be attached to the top of the knocking part, which is located below the rear face of the writing instrument, so that knocking part may be extended.
Thus, the brush point of the writing instrument is cov-ered, for example, with the cap when it is not in use, and a knocking to feed the specific liquid is not available since the knocking point is not extended over the rear end of the instru-ment. The cap is taken off from the top of the brush point whenthe writing instrument is in use, and is fixed to the concave part of the rear end of the writing instrument so as to be used for feeding the liquid.
The present invention is now explained in detail with reference to the accompanying drawings, in which all four fea-tures are present in the writing instrument.
In the embodiment of the present invention, a mouth-piece member of a hard plastic material has a thick sleeve-like portion 1 and a thin sleeve-like portion 2 integrally connected ?ti5 to the thick sleeve-like portion l through a first step portion 3. In an inner surface of the thin sleeve-like portion 2 of the mouthpiece member 4, there are provided four cross-wise longitu-dinal grooves 5 each of which extend from an upper edge of the t,hln sleeve-like portion 2 to the vicinity of a lower edge of the same. In the first step portion 3, there are provided four lat-eral grooves 5' each of which extends from the longitudinal groove 5 to the vicinity of an outer periphery of the first step portion 3, in an inner periphery of which step portion 3 is pro-vided an annular groove 6. A brush point of the writing instru-ment is formed from a plurality of thermo-plastic filaments bundled into a tuft and an upper end of the thus formed tuft is melted to form a brush point 9 provided with a flange portion 8 at its upper and outer periphery as a mounting means thereof. A
thin diameter ink guide hole 7 having a reverse-conical shape is also formed in a center portion of the brush point 9 so that the ink guide hole 7 extends from an upper end of the brush point 9 to approximately a middle portion of the brush point 9. The thus formed brush po,int 9 is dropped into the thin sleeve-like portion 2 of the mouthpiece member 4 so that its flange portion 8 is inserted into the ann~lar groove 6 of the mouthpiece member 4.
Thereafter, a disc-like plate 10 of a hard plastic material and having outer diameter of the same size as the inner diameter of the thick sleeve-like portion l of the mouthpiece member 4, is placed on the first step portlon 3 of the mouthpiece members 4.
In a central portion of the disc-like plate lO, there is provided an ink passage hole 11 communicating with the ink guide hole 7 of the brush point 9. In a lower surface of the disc-like plate 10, there are provided an annular groove 12 having the ink passage hole 11 as its center and a cross groove 13 which faces the lat-eral grooves 5 of the mouthpiece member 4 after the disk-like plate 10 ls installed, and which cross groove 13 is connected to the annular groove 12 at its outer ends and to the ink passage hole 11 at its center. In an upper surface of the disc-like plate 10, there is integrally provided a short sleeve-like inser-tion portion 14 which has the ink passage hole ll as its center.
~ t;~
An ink conduit 16 of a hard plastic material is provided with aclosed upper end and an open lower end so that it acts also as a valve stem or a piston rod. In opposite side walls of the upper end portlon of the ink conduit 16, there are provided two ink outlets 17. In a top surface of the upper end portion of the ink conduit 16, an inserting projection 18 is integrally provided.
In an outer periphery of a lower end of the ink conduit 16, there is integrally provided a seat portion 20 which has a reverse dish-like shape and is provided with an outwardly extending flange 19. The thus formed ink conduit 16 is dropped into the thick sleeve-like portion 1 of the mouthpiece member 4 to seat its seat portion 20 on the disc-like plate 10 so that a lower portion of the ink conduit 16 is inserted into the sleeve-like insertion portion 14 of the disc-like plate 10 so that its inner hole 12 communicates with the ink passage hole 11 of the disc-like plate 10. A shaft sleeve 24 of a thin metal tube is pro-vided with a male screw thread 23 in an outer peripheral surface of a lower portion thereof, both upper and lower ends of which sleeve 24 are open. Thls shaft sleeve 24 is connected to the mouthpiece member 4 through a threadable connection between the male screw thread 23 and a female screw thread 25 provided in an inner surface of the thick sleeve-like portion 1 of the latter, so that a lower end edge 26 of the shaft sleeve 24 urges an upper surface of the flange 19 of the ink conduit 16 to flxedly hold the disc-like plate 10 and the ink conduit 16 in place so that the brush point 9 is held so as to point downward by the disc-like plate 10 and so that the ink conduit 16 is held to point upwardly. In such a condition, a clearance is provided between the outer peripheral surface of the brush point 9 and the inner peripheral surface of the thin sleeve-like portion 2 of the mouthpiece member 4. A pipe-like mouth element 29 of a plastic material has a tapered small diameter and short length portion in its front portion and a second step portion 28 in an inner peripheral surface of its middle portion. In an upper surface of the second step portion 28 of the mouth element 29, there is pro-vided a packing groove 30 which is open radially and upwardly and ~ t;5 in which groove 30 is inserted a doughnut-like packing 31 having a concave portion 33 which forms a cavity 32 adjacent to a wall surface of the packing groove 30 when the packing 31 is inserted into the packing groove 30. A valve box/cylinder 39 of a plastic material is provided with an outwardly extending flange 35 in an outer periphery ln the vicinity of a lower edge thereof, a valve seat 36 in an inner peripheral surface of a middle portion thereof, three longitudinally elongated ink passage holes 37 in a peripheral wall of an upper half thereof, which holes 37 are spaced apart from each other, and a guide hole 38 in a top wall thereof, respectively. In this valve boxtcylinder 39 is inserted a valve body/piston 42 which is provided with an insertion hole 40 in a center portion of its lower surface and a guide rod 41 in its upper surface, respectively. The valve bodyJpiston 42 is in slidable contact with an inner peripheral surface of an upper half of the valve box/cylinder 39 in its outer peripheral surface while guided by the guide hole 38 of the valve box/cylinder 39 in its guide rod 41, to allow the valve body/piston 42 to move up and down in the valve box/cylinder 39. A coil spring 43 is 20 mounted around the guide rod 41 of the valve body/piston 42 in the valve box/cylinder 39 so that the coil spring 43 imparts an upward force to each of the valve box/cylinder 39, the packing 31, the mouth element 29 and an ink bottle 45. At this time, the valve box/cylinder 39 has been dropped in the mouth element 29 and seated on the second step portion 28 of the mouth element 29, while the ink bottle 45 formed of a thin metal tube, provided with a closed upper portion and a male screw thread 44 in an outer peripheral surface of its open lower end portion and con-tains, for example, a gold or silver color ink therein is con-nected to the mouth member 29 through a threadable connectionbetween the male screw thread 44 of the ink bottle 45 and a female screw thread 46 provided in an inner surface of the mouth element 29 so that a lower end edge of the thus connected ink bottle 45 urges an upper surface of the outwardly extending flange 35 of the valve box/cylinder 39 to have a lower surface of the valve box/cylinder 39 brought into firm contact with an upper i5 surface of the packing 31 inserted in the packing groove 30 of the upper surface of the second step portion 28 of the mouth element 29. Further, the thus assembled ink bottle 45 iS inser-ted into the shaft sleeve 24 so that the ink conduit 16 is inser-ted lnto a lower opening of the mouth element 29 to have an outerperipheral surface of its middle portion brought into firm con-tact with an inner peripheral surface of the packing 31 and to have its inserting projection 18 inserted into the insertion hole 40 of the valve body/piston 42. Thereafter, a ring-like edge reinforcing member 47 is fixedly inserted in the upper opening of the shaft sleeve 24 to prevent the ink bottle 45 from being with-drawn from the shaft sleeve 24. A cap 49 of a plastic material for use in covering the brush point 9 has a size and shape to be detachably inserted into the thin sleeve-like portion 2 of the mouthpiece member 4 and the cap 49 can be detachably inserted into the upper portion of the shaft sleeve 24. A tail plug 50 which is removed in use is firmly inserted into the upper end of the shaft sleeve 24 so that an inner end of the tail plug 50 abuts against the upper end of the ink bottle 45.
Thus, in use, the user of the writing instrument first removes the tail plug 50 and the cap 49 attached to the mouth-piece member 4 from the writing instrument and then the thus removed cap 49 is lnserted lnto a concave portion 51 in the upper 25 end of the shaft sleeve 24 so that a lower end of the cap 49 ls placed on the upper end of the lnk bottle 45. When the cap 49 is knocked downward by the user, all of the ink bottle 45, the valve box/cylinder 39, the packing 31 and the mouth element 29 are moved downward agalnst the upward force imparted to them by the coll spring 4 3. At the beginning of such downward movement of the cap 49, external air is introduced into a space under a lower surface of the valve body/piston 42 by sucking action of the valve body~piston 42 through the clearance 9', the longitudinal grooves 5, the lateral grooves 5', the annular groove 12, the cross groove 13, the ink conduit 16 and the ink outlets 17. When such downward movement of the cap 49 is further continued, the A
l~S~l~t.5 space under the lower surface of the valve body/piston 42 is fur-ther increased in volume to finally communicate with the inner space of the bottle 45 when the ink outlets 17 is brought into open to the inner space of the ink bottle 45 above the valve seat 36, so that a part of the ink contained in the ink bottle 45 is replaced wlth the thus introduced external air and flows downward into the space under the lower surface of the valve body/piston 42 through the ink passage holes 37. When the knocking action of the cap 49 mentioned above is resolved, all the ink bottle 45, the valve box/cylinder 39, the packing 31 and the mouth element 29 are moved upwardly under the upward force imparted to them by the coil spring 43. In such upward movement thereof, when the lower end edge of the ink passage hole 37 is at the level of the bottom surface of the valve body/piston 42, the tank in the space under the valve body/piston 42 is transferred into the ink conduit 16 through the ink outlets 17. Namely, when the knocking operation and its releasing operation of the cap 49 are alternately repeated, the ink contained in the bottle 45 is grad-ually replaced with the external air to be fed to the brush point 9 through the ink conduit 16 and the ink guide hole 7 of the brush point 9 so that the brush point 9 is wet with the thus fed ink.
As described above, the upper half of the brush point 9 ls inserted into the thin sleeve-like port~on 2 of the mouthpiece member 4 to have its upper flange portion 8 seated in the annular groove 6 of the thin sleeve-like portion 2 of the mouthpiece mem-ber 4, while the clearance is provided between two surfaces one of which is the outer peripheral surface of a portion of the brush point 9 which portion exists in the thin sleeve-like por-tion 2 of the mouthpiece member 4 and the other of which two sur-faces is the inner peripheral surface of the thin sleeve-like portion 2 of the mouthpiece member 4, so that the brush point 9 is held bendable within the thin sleeve-like portion 2 of the mouthpiece member 4.
g _
Hitherto, since the specific liquid is viscous and/or is liable to quick-drying due to solvents, the usual type of writing instrument cannot be used without certain modifications or improvements. That is, the specific liquid is liable to clog in an ink passage, or at an opening end of the ink reservoir. It is, therefore, neccssary to improve, for example, the flow of the specific liquid for evaporation during storage and use thereof.
The present invention provides a writing instrument which smoothly supplies a specific liquid to the top part of pen or brush without clogging of the liquid flow during use.
The present invention also provides a writing instru-ment which has a safeguard to prevent accidental movement of the knocking part and supply of the specific liquid to the top part of the instrument during transport, storing and handling thereof.
According to the first aspect of the present invention there is provided a writing instrument for specific liquid which has an air introducing passage for the required amount of air from the exterior of the instrument by a sucking action of a valve body/position. Suitably the air introducing passage com-prises a clearance, a longitudinal groove, a lateral groove, an annular groove, a cross groove, an ink conduit and ink outlets.
According to the second aspect of the present invention there is provided a writing instrument for a specific liquid which has a liquid passage for supplying the liquid at all times A
1 ~ 91 ~t,~i from an ink reservoir to a brush point through a liquid supply cylinder in which the liquid reservoir provided multiple llquld passage holes longitudinally elongated and spaced apart from each other, and the liquid supply cylinder located between the reser-volr and a brush point, provides liquid outlets at a peripheralwall thereof, so that at least one of the holes and outlets may always be aligned to let the llquid through. Suitably three lon-gitudinally elongated liquid passage holes are provided.
According to a third aspect of the present invention there is provided a writing instrument for a specific liquid com-prising a liquid reservoir having a valve box/cylinder, a mouth element and mouth piece member, in which a liquid reservoir is connected with mouth element interposed with a packing havlng a concave portion which forms a cavity adjacent to a wall surface of the packing groove. Suitably the packing is in a doughnut-like shape.
According to the fourth aspect of the present invention there is provided a writing instrument for a specific liquid hav-ing a cap over a brush point, said cap being adapted to detach from the brush point and insert into a concave portlon of an upper portion of a shaft sleeve so that a lower end of the cap may be placed on an upper end of an lnk bottle or piston stem thereby supplementlng knocklng movement.
In the accompanying drawings which illustrate an embod-lment of the present invention, Fig.s 1-7 show the writing instrument containing the specific liquid in a cartridge, and Fig. 8 shows the writing instrument containing the specific liquid in the body thereof, liquid being supplied to the top by virtue of a piston means. In particular:
Fig. l is a longitudinal sectional view through the brush-like writlng lnstrument of the present invention;
t;5 Fig. 2 is an exploded perspective view of the same;
Fig. 3 is a cross-sectional view taken along the line A-~ of Fig. l;
Fig. 4 is a longitudinal view of the brush-like writing instrument in a condition that a knocking operation thereof is completed;
Fig. 5 is a longitudinal sectional view of the brush-like writing instrument in a condition that the knocking opera-tion is completely released; and Fig. 6 is a longitudinal sectional view of the writing instrument in a condltion that the knocking operation thereof is stopped halfway.
Fig. 7 is a cross-sectional view taken along the line B-B of Fig. l; and Fig. 8 is a longitudinal sectional view of the writing instrument which contalns specific liquid in the body thereof according to the present invention.
In order to overcome above first drawbacks the writing instrument according to the present invention, there is to pro-vide several improvements for easily feeding the specific liquid to the brush point as stated below. (l) The writing instrument provides air-introducing passages which forcedly introduce air from the exterior of the instrument so as to smoothly supply the specific liquid from the storage part thereof to the top of the brush point without causing the specific liquid at a passage in the writing instrument. (2) The writing instrument also provides a specific liquid passage which comprises longitudinally elon-gated liquid passage holes and outlets in a peripheral wall ofcylinder, and the relative positions between the holes and out-1~6,~1~t~`~
lets being so arranged that at least one of the holes and outletsmay be aligned to let the llquid through at any angle of rota-tlon. ~3) The writing instrument further provides a sealing means comprising a packing at the rear end of the piston rod or openiny of the liquid bottle in order to seal an opening of the llquid bottle or the passage hole in a position rod or stem. In the packing a concave portion is provided so that a gap may be formed when it is placed on the packing groove.
Furthermore, in the writing instrument according to the present invention there is to provide a means for forcedly feed-ing the specific liquid which has a safeguard against leaking of the specific liquid from the writing instrument during storage, shipping and use as stated below. (4) The writing instrument provides a guard such as cap, to the brush point which is capable of being removed and fixed into the rear concave end of the writ-ing instrument, having sufficient length to be attached to the top of the knocking part, which is located below the rear face of the writing instrument, so that knocking part may be extended.
Thus, the brush point of the writing instrument is cov-ered, for example, with the cap when it is not in use, and a knocking to feed the specific liquid is not available since the knocking point is not extended over the rear end of the instru-ment. The cap is taken off from the top of the brush point whenthe writing instrument is in use, and is fixed to the concave part of the rear end of the writing instrument so as to be used for feeding the liquid.
The present invention is now explained in detail with reference to the accompanying drawings, in which all four fea-tures are present in the writing instrument.
In the embodiment of the present invention, a mouth-piece member of a hard plastic material has a thick sleeve-like portion 1 and a thin sleeve-like portion 2 integrally connected ?ti5 to the thick sleeve-like portion l through a first step portion 3. In an inner surface of the thin sleeve-like portion 2 of the mouthpiece member 4, there are provided four cross-wise longitu-dinal grooves 5 each of which extend from an upper edge of the t,hln sleeve-like portion 2 to the vicinity of a lower edge of the same. In the first step portion 3, there are provided four lat-eral grooves 5' each of which extends from the longitudinal groove 5 to the vicinity of an outer periphery of the first step portion 3, in an inner periphery of which step portion 3 is pro-vided an annular groove 6. A brush point of the writing instru-ment is formed from a plurality of thermo-plastic filaments bundled into a tuft and an upper end of the thus formed tuft is melted to form a brush point 9 provided with a flange portion 8 at its upper and outer periphery as a mounting means thereof. A
thin diameter ink guide hole 7 having a reverse-conical shape is also formed in a center portion of the brush point 9 so that the ink guide hole 7 extends from an upper end of the brush point 9 to approximately a middle portion of the brush point 9. The thus formed brush po,int 9 is dropped into the thin sleeve-like portion 2 of the mouthpiece member 4 so that its flange portion 8 is inserted into the ann~lar groove 6 of the mouthpiece member 4.
Thereafter, a disc-like plate 10 of a hard plastic material and having outer diameter of the same size as the inner diameter of the thick sleeve-like portion l of the mouthpiece member 4, is placed on the first step portlon 3 of the mouthpiece members 4.
In a central portion of the disc-like plate lO, there is provided an ink passage hole 11 communicating with the ink guide hole 7 of the brush point 9. In a lower surface of the disc-like plate 10, there are provided an annular groove 12 having the ink passage hole 11 as its center and a cross groove 13 which faces the lat-eral grooves 5 of the mouthpiece member 4 after the disk-like plate 10 ls installed, and which cross groove 13 is connected to the annular groove 12 at its outer ends and to the ink passage hole 11 at its center. In an upper surface of the disc-like plate 10, there is integrally provided a short sleeve-like inser-tion portion 14 which has the ink passage hole ll as its center.
~ t;~
An ink conduit 16 of a hard plastic material is provided with aclosed upper end and an open lower end so that it acts also as a valve stem or a piston rod. In opposite side walls of the upper end portlon of the ink conduit 16, there are provided two ink outlets 17. In a top surface of the upper end portion of the ink conduit 16, an inserting projection 18 is integrally provided.
In an outer periphery of a lower end of the ink conduit 16, there is integrally provided a seat portion 20 which has a reverse dish-like shape and is provided with an outwardly extending flange 19. The thus formed ink conduit 16 is dropped into the thick sleeve-like portion 1 of the mouthpiece member 4 to seat its seat portion 20 on the disc-like plate 10 so that a lower portion of the ink conduit 16 is inserted into the sleeve-like insertion portion 14 of the disc-like plate 10 so that its inner hole 12 communicates with the ink passage hole 11 of the disc-like plate 10. A shaft sleeve 24 of a thin metal tube is pro-vided with a male screw thread 23 in an outer peripheral surface of a lower portion thereof, both upper and lower ends of which sleeve 24 are open. Thls shaft sleeve 24 is connected to the mouthpiece member 4 through a threadable connection between the male screw thread 23 and a female screw thread 25 provided in an inner surface of the thick sleeve-like portion 1 of the latter, so that a lower end edge 26 of the shaft sleeve 24 urges an upper surface of the flange 19 of the ink conduit 16 to flxedly hold the disc-like plate 10 and the ink conduit 16 in place so that the brush point 9 is held so as to point downward by the disc-like plate 10 and so that the ink conduit 16 is held to point upwardly. In such a condition, a clearance is provided between the outer peripheral surface of the brush point 9 and the inner peripheral surface of the thin sleeve-like portion 2 of the mouthpiece member 4. A pipe-like mouth element 29 of a plastic material has a tapered small diameter and short length portion in its front portion and a second step portion 28 in an inner peripheral surface of its middle portion. In an upper surface of the second step portion 28 of the mouth element 29, there is pro-vided a packing groove 30 which is open radially and upwardly and ~ t;5 in which groove 30 is inserted a doughnut-like packing 31 having a concave portion 33 which forms a cavity 32 adjacent to a wall surface of the packing groove 30 when the packing 31 is inserted into the packing groove 30. A valve box/cylinder 39 of a plastic material is provided with an outwardly extending flange 35 in an outer periphery ln the vicinity of a lower edge thereof, a valve seat 36 in an inner peripheral surface of a middle portion thereof, three longitudinally elongated ink passage holes 37 in a peripheral wall of an upper half thereof, which holes 37 are spaced apart from each other, and a guide hole 38 in a top wall thereof, respectively. In this valve boxtcylinder 39 is inserted a valve body/piston 42 which is provided with an insertion hole 40 in a center portion of its lower surface and a guide rod 41 in its upper surface, respectively. The valve bodyJpiston 42 is in slidable contact with an inner peripheral surface of an upper half of the valve box/cylinder 39 in its outer peripheral surface while guided by the guide hole 38 of the valve box/cylinder 39 in its guide rod 41, to allow the valve body/piston 42 to move up and down in the valve box/cylinder 39. A coil spring 43 is 20 mounted around the guide rod 41 of the valve body/piston 42 in the valve box/cylinder 39 so that the coil spring 43 imparts an upward force to each of the valve box/cylinder 39, the packing 31, the mouth element 29 and an ink bottle 45. At this time, the valve box/cylinder 39 has been dropped in the mouth element 29 and seated on the second step portion 28 of the mouth element 29, while the ink bottle 45 formed of a thin metal tube, provided with a closed upper portion and a male screw thread 44 in an outer peripheral surface of its open lower end portion and con-tains, for example, a gold or silver color ink therein is con-nected to the mouth member 29 through a threadable connectionbetween the male screw thread 44 of the ink bottle 45 and a female screw thread 46 provided in an inner surface of the mouth element 29 so that a lower end edge of the thus connected ink bottle 45 urges an upper surface of the outwardly extending flange 35 of the valve box/cylinder 39 to have a lower surface of the valve box/cylinder 39 brought into firm contact with an upper i5 surface of the packing 31 inserted in the packing groove 30 of the upper surface of the second step portion 28 of the mouth element 29. Further, the thus assembled ink bottle 45 iS inser-ted into the shaft sleeve 24 so that the ink conduit 16 is inser-ted lnto a lower opening of the mouth element 29 to have an outerperipheral surface of its middle portion brought into firm con-tact with an inner peripheral surface of the packing 31 and to have its inserting projection 18 inserted into the insertion hole 40 of the valve body/piston 42. Thereafter, a ring-like edge reinforcing member 47 is fixedly inserted in the upper opening of the shaft sleeve 24 to prevent the ink bottle 45 from being with-drawn from the shaft sleeve 24. A cap 49 of a plastic material for use in covering the brush point 9 has a size and shape to be detachably inserted into the thin sleeve-like portion 2 of the mouthpiece member 4 and the cap 49 can be detachably inserted into the upper portion of the shaft sleeve 24. A tail plug 50 which is removed in use is firmly inserted into the upper end of the shaft sleeve 24 so that an inner end of the tail plug 50 abuts against the upper end of the ink bottle 45.
Thus, in use, the user of the writing instrument first removes the tail plug 50 and the cap 49 attached to the mouth-piece member 4 from the writing instrument and then the thus removed cap 49 is lnserted lnto a concave portion 51 in the upper 25 end of the shaft sleeve 24 so that a lower end of the cap 49 ls placed on the upper end of the lnk bottle 45. When the cap 49 is knocked downward by the user, all of the ink bottle 45, the valve box/cylinder 39, the packing 31 and the mouth element 29 are moved downward agalnst the upward force imparted to them by the coll spring 4 3. At the beginning of such downward movement of the cap 49, external air is introduced into a space under a lower surface of the valve body/piston 42 by sucking action of the valve body~piston 42 through the clearance 9', the longitudinal grooves 5, the lateral grooves 5', the annular groove 12, the cross groove 13, the ink conduit 16 and the ink outlets 17. When such downward movement of the cap 49 is further continued, the A
l~S~l~t.5 space under the lower surface of the valve body/piston 42 is fur-ther increased in volume to finally communicate with the inner space of the bottle 45 when the ink outlets 17 is brought into open to the inner space of the ink bottle 45 above the valve seat 36, so that a part of the ink contained in the ink bottle 45 is replaced wlth the thus introduced external air and flows downward into the space under the lower surface of the valve body/piston 42 through the ink passage holes 37. When the knocking action of the cap 49 mentioned above is resolved, all the ink bottle 45, the valve box/cylinder 39, the packing 31 and the mouth element 29 are moved upwardly under the upward force imparted to them by the coil spring 43. In such upward movement thereof, when the lower end edge of the ink passage hole 37 is at the level of the bottom surface of the valve body/piston 42, the tank in the space under the valve body/piston 42 is transferred into the ink conduit 16 through the ink outlets 17. Namely, when the knocking operation and its releasing operation of the cap 49 are alternately repeated, the ink contained in the bottle 45 is grad-ually replaced with the external air to be fed to the brush point 9 through the ink conduit 16 and the ink guide hole 7 of the brush point 9 so that the brush point 9 is wet with the thus fed ink.
As described above, the upper half of the brush point 9 ls inserted into the thin sleeve-like port~on 2 of the mouthpiece member 4 to have its upper flange portion 8 seated in the annular groove 6 of the thin sleeve-like portion 2 of the mouthpiece mem-ber 4, while the clearance is provided between two surfaces one of which is the outer peripheral surface of a portion of the brush point 9 which portion exists in the thin sleeve-like por-tion 2 of the mouthpiece member 4 and the other of which two sur-faces is the inner peripheral surface of the thin sleeve-like portion 2 of the mouthpiece member 4, so that the brush point 9 is held bendable within the thin sleeve-like portion 2 of the mouthpiece member 4.
g _
Claims
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A writing instrument for higher viscosity liquids which comprises: an outer shaft sleeve; a mouthpiece to be fastened to said outer shaft sleeve; a reservoir member mounted for sliding movement in said outer shaft sleeve; a brush point surrounded by a sleeve portion of said mouthpiece at an axial distance from the point tip thereof and at a radial clearance from the periphery of the sleeve portion; a valve means provided between said reservoir member and the rear end of said brush point; a liquid conduit through which writing liquid is fed to said brush point from said valve means; a passage for incoming air formed by the radial clearance, at least one inner longitudinal groove in said mouthpiece, a following inner annular groove in said mouthpiece, at least one following radially outwardly directed transverse groove in said mouthpiece, at least one following cross-groove in one side of a plate supporting the rear end of said brush point, and a hole extending through the plate, said cross-groove communicating with said inner annular groove and said hole respectively, said reservoir member being provided at the end facing the brush point with a valve seat member for a valve piston which is supported at the end remote from the brush point by means of a spring at a valve cylinder connected to said mouthpiece through said liquid conduit.
Applications Claiming Priority (10)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24155/1985 | 1985-02-20 | ||
| JP24152/1985 | 1985-02-20 | ||
| JP2415185U JPH0225657Y2 (en) | 1985-02-20 | 1985-02-20 | |
| JP24151/1985 | 1985-02-20 | ||
| JP2415685U JPH0230311Y2 (en) | 1985-02-20 | 1985-02-20 | |
| JP2415585U JPH0230310Y2 (en) | 1985-02-20 | 1985-02-20 | |
| JP2415285U JPH0411834Y2 (en) | 1985-02-20 | 1985-02-20 | |
| JP24156/1985 | 1985-02-20 | ||
| JP2415085U JPH0411833Y2 (en) | 1985-02-20 | 1985-02-20 | |
| JP24150/1985 | 1985-02-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1291965C true CA1291965C (en) | 1991-11-12 |
Family
ID=27520609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000500109A Expired - Fee Related CA1291965C (en) | 1985-02-20 | 1986-01-22 | Brush-like writing instrument |
Country Status (5)
| Country | Link |
|---|---|
| CA (1) | CA1291965C (en) |
| DE (1) | DE3605506A1 (en) |
| FR (1) | FR2577474B1 (en) |
| GB (1) | GB2172797B (en) |
| IT (1) | IT1188394B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH672717A5 (en) * | 1986-03-06 | 1989-12-29 | Ernst Moscatelli | |
| JPH0630302Y2 (en) * | 1986-11-17 | 1994-08-17 | 三菱鉛筆株式会社 | Writing instruments and applicators |
| FR2607683B1 (en) * | 1986-12-09 | 1991-12-13 | Mitsubishi Pencil Co | TOOL FOR COATING HAIR WITH A BEAUTY PRODUCT |
| JPS6395503U (en) * | 1986-12-09 | 1988-06-20 | ||
| JPH066952Y2 (en) * | 1987-02-26 | 1994-02-23 | 三菱鉛筆株式会社 | Liquid writing or application tool |
| JPH02104880U (en) * | 1989-01-31 | 1990-08-21 | ||
| ES2088813B1 (en) * | 1992-06-02 | 1997-05-01 | Garcia Rodriguez | DOSING CAP AND ENAMEL APPLICATOR. |
| JP4726279B2 (en) | 2000-06-30 | 2011-07-20 | 三菱鉛筆株式会社 | Liquid applicator |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2330053A (en) * | 1943-04-26 | 1943-09-21 | Diagraph Bradley Stencil Machi | Fountain applicator |
| GB636895A (en) * | 1947-05-06 | 1950-05-10 | Arthur Gordon Trill | Improvements in or relating to reservoir brushes |
| FR1007004A (en) * | 1948-02-11 | 1952-04-30 | Reservoir instrument applied in particular as a drawing instrument | |
| FR1021492A (en) * | 1950-07-05 | 1953-02-19 | Gerinvil | Device for spreading products in pasty, viscous or even liquid form |
| GB740802A (en) * | 1950-08-01 | 1955-11-23 | Cushman And Denison Company Lt | Improvements in or relating to reservoir writing or drawing instruments |
| GB761065A (en) * | 1953-07-21 | 1956-11-07 | Cushman & Denison Company Ltd | Improvements in or relating to reservoir writing instruments |
| FR1306685A (en) * | 1961-09-05 | 1962-10-19 | Christian Sa Ets | Further development of stylographs |
| US3589824A (en) * | 1969-10-09 | 1971-06-29 | Mark Tex Corp | Cartridge marker construction |
| DE3303341A1 (en) * | 1983-02-02 | 1984-08-02 | Revell Plastics GmbH, 4980 Bünde | Device for applying a coloured liquid |
| JPS59141907U (en) * | 1983-03-11 | 1984-09-21 | 小川化工株式会社 | makeup brush |
-
1986
- 1986-01-22 CA CA000500109A patent/CA1291965C/en not_active Expired - Fee Related
- 1986-02-17 IT IT8619428A patent/IT1188394B/en active
- 1986-02-18 FR FR868602164A patent/FR2577474B1/en not_active Expired - Fee Related
- 1986-02-19 GB GB08604039A patent/GB2172797B/en not_active Expired
- 1986-02-20 DE DE19863605506 patent/DE3605506A1/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| IT8619428A1 (en) | 1987-08-17 |
| DE3605506A1 (en) | 1986-08-21 |
| IT1188394B (en) | 1988-01-07 |
| GB8604039D0 (en) | 1986-03-26 |
| FR2577474B1 (en) | 1990-01-12 |
| GB2172797A (en) | 1986-10-01 |
| IT8619428A0 (en) | 1986-02-17 |
| GB2172797B (en) | 1988-11-09 |
| FR2577474A1 (en) | 1986-08-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |