GB2031346A - Creation of Inventions and Patents with Artificial Intelligence

GB2031346A – Writing device
– Google Patents

GB2031346A – Writing device
– Google Patents
Writing device

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Info

Publication number
GB2031346A

GB2031346A
GB7931528A
GB7931528A
GB2031346A
GB 2031346 A
GB2031346 A
GB 2031346A
GB 7931528 A
GB7931528 A
GB 7931528A
GB 7931528 A
GB7931528 A
GB 7931528A
GB 2031346 A
GB2031346 A
GB 2031346A
Authority
GB
United Kingdom
Prior art keywords
writing
ink
capillary tube
holder
ink holder
Prior art date
1978-09-12
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.)

Granted

Application number
GB7931528A
Other versions

GB2031346B
(en

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Vermes Chemie Co KG GmbH

Original Assignee
Vermes Chemie Co KG GmbH
Priority date (The priority date 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 date listed.)
1978-09-12
Filing date
1979-09-11
Publication date
1980-04-23

1979-09-11
Application filed by Vermes Chemie Co KG GmbH
filed
Critical
Vermes Chemie Co KG GmbH

1980-04-23
Publication of GB2031346A
publication
Critical
patent/GB2031346A/en

1982-09-22
Application granted
granted
Critical

1982-09-22
Publication of GB2031346B
publication
Critical
patent/GB2031346B/en

Status
Expired
legal-status
Critical
Current

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Classifications

G—PHYSICS

G01—MEASURING; TESTING

G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR

G01D15/00—Component parts of recorders for measuring arrangements not specially adapted for a specific variable

G01D15/16—Recording elements transferring recording material, e.g. ink, to the recording surface

Description

1
GB 2 031 346 A 1
SPECIFICATION Writing Device
This invention relates to a writing device, especially for measuring and recording 5 instruments, having an ink holder and a capillary tube leading from the ink holder and drawing ink therefrom.
Writing devices are known, in which the capillary tube itself is rigid and is connected 10 rigidly to the ink holder. Consequently, during writing the ink holder must be moved together with the capillary tube. In many recording instruments this arrangement presents difficulties, since insufficient space is available in 15 the region of the writing arm for an adequately sized ink holder and/or insufficient force is available to move an adequately sized ink holder on the writing arm.
To overcome these disadvantages, writing 20 devices have been developed, in which the ink is supplied to a so-called writing tip from an ink holder either directly or via an intermediate piece of metal by means of a flexible hose. The writing tip is made conventionally of fine steel, optionally 25 with a jewel insert, of glass, ceramic or other materials.
In general, the known writing devices of the above-mentioned type are highly sensitive to temperature and air-pressure variations and to 30 changes of the filling level of the ink in the ink holder as well as to changes of position in the operating state. Moreover, these types of writing devices are mostly very expensive to purchase and require considerable outlay on maintenance 35 and the replacement of individual parts is complicated and frequently leads to contamination.
Irrespective thereof, fibre-tipped writing pens are known with a housing in which there is 40 situated a filling material saturated with ink and having a relatively small capillarity. There projects into this filling material the rearward end of a bunch of plastic fibres stuck or welded to one another or of an extruded, outwardly liquid tight 45 plastic tube provided on the inside with numerous capillary tubes of diverse construction or of an extrusion of foamed plastic material with capillary tubes connected to one another. The fibre bunch, the plastic tube or the extrusion each have a 50 higher capillary force than the filling material saturated with ink, so that they automatically convey the ink from the filling material to its free end, from which the ink can be transferred to a writing substrate without a separate writing tip. 55 Such a fibre writing pen constitutes a unit which is exchangeable in a very short time and requires no outlay on maintenance. Fibre writing pens can be transported and used in any position without the ink leaking out and automatically regulate the 60 ink flow within a wide temperature and air-pressure range. They are ready for operation immediately after removal of a protective cap which protects the ink outlet end.
However, with hitherto known fibre writing gg pens, the fibre bunch, the plastic tube or the foam extrusion which convey the ink from the filling material to the ink outlet end by capillary force possess such a high stiffness that they are practically rigid. The ink holder must be moved 70 together with the writing arm similarly to the writing device of the above-mentioned type, so that the abovedescribed disadvantages arise. In many measuring instruments where the space available at the writing arm is small or where 75 there is a lack of force, as in, for example, disc chart recorders with several pointers, weather recorders and other recording instruments, fibre writing pens can therefore be used only with an inadequate writing capacity, if at all, as writing 80 rrieans.
The object of the invention is to provide a simple writing device of the above-mentioned type which permits at a small cost a flexible connection between the ink holder and writing 85 tip.
According to the invention there is provided a writing device, comprising an ink holder and a flexible capillary tube leading from the ink holder for drawing ink therefrom, wherein the free end of 90 the capillary tube is secured to a writing arm or carriage to act as a writing tip movable relative to the ink holder.
The capillary tube itself thus serves both as a means to draw the ink automatically out of the ink 95 holder provided with an air compensating opening and as a means to convey the ink to the writing tip as well as a means to constitute the writing tip itself. For all that, the capillary tube is flexible, so that it permits a stationary arrangement of the ink 100 holder, if desired. It does not matter whether the ink holder is a hollow housing filled with ink or a housing in which filling material saturated with ink is situated. It is necessary merely to guarantee that the rearward end of the flexible capillary tube 105 extends into the liquid ink or into filling material of smaller capillarity saturated with ink and that an air compensating opening is provided at a suitable point.
In a preferred embodiment the capillary tube 110 has, in order to benefit its flexibility, an outside diameter which is less than 0.8 mm, preferably less than 0.6 mm. It has proved especially advantageous to make the capillary tube of a plastics material, preferably of polyacetal. Such a 115 capillary tube can have a length up to 500 mm. It should desirably be provided on the inside, as with known plastic writing tips, with a capillary system whose structure is uniformly shaped over the entire length. The capillary tube (plastic 120 writing tip) must, of course, be outwardly ink-tight.
The necessary maintenance work for such a writing device is small, if required at all. The construction of the writing device is extremely 125 simple. The expenditure associated with known writing tips of fine steel and the like is nullified. The assembly outlay of the writing device is comparable to known fibre writing pens and is substantially smaller than with known writing
2
GB 2 031 346 A 2
devices. The ink holder and capillary tube are easily exchangeable either together or optionally individually. Their costs are small. Consequently, the device of the invention is suitable, like fibre 5 writing pens, as a “disposable” writing system.
The invention is described hereinafter by reference to an exemplary embodiment illustrated in the accompanying drawing in which a writing device according to the invention is shown 10 schematically.
The writing device has a stationary ink holder 2 and a capillary tube 4 leading from the ink holder 2 and drawing ink out of the ink holder 2. The ink holder 2 is provided with a filling material 6 of 15 relatively small capillarity which is saturated with ink. The capillarity of the capillary tube 4 is at all times larger than the capillarity of the filling material 6, so that the capillary tube 4 draws the ink out of the filling material 6. The capillary tube 20 4 consists of flexible, sufficiently abrasionproof material and has in the preferred exemplary embodiment an outside diameter of 0.55 mm. The free end 8 of the capillary tube 4 is fastened as a writing tip with a support 10 to a writing 25 carriage 12 which can be moved to and fro in the direction of the double arrow 14 on rails not shown. The writing tip is directed to a recording chart 16 which is guided over two rollers 18,20. Claims
30 1. A writing device, comprising an ink holder and a flexible capillary tube leading from the ink holder for drawing ink therefrom, wherein the free end of the capillary tube is secured to a Writing arm of carriage to act as a writing tip movable
35 relative to the ink holder.
2. A device according to claim 1, wherein the outside diameter of the capillary tube is less than 0.8 mm, preferably less than 0.6 mm.
3. A device according to claim 1 or 2, wherein
40 the capillary tube is made of a plastics material,
preferably polyacetal.
4. A device according to claim 3, wherein the capillary tube is manufactured by extrusion of the plastics material.
45 5. A device according to any preceding claim, wherein the capillary tube has a uniform shaped inner structure over its entire length from the ink holder as far as its free end serving as a writing tip.
50 6. A writing device substantially as herein described with reference to the accompanying drawing.
Printed for Her Majesty’s Stationery Office by the Courier Press. Leamington Spa. 1980. Published by the Patent Office. 25 Southampton Buildings, London, WC2A 1 AY, from which copies may be obtained.

GB7931528A
1978-09-12
1979-09-11
Writing device

Expired

GB2031346B
(en)

Applications Claiming Priority (1)

Application Number
Priority Date
Filing Date
Title

DE19782839664

DE2839664A1
(en)

1978-09-12
1978-09-12

WRITING DEVICE

Publications (2)

Publication Number
Publication Date

GB2031346A
true

GB2031346A
(en)

1980-04-23

GB2031346B

GB2031346B
(en)

1982-09-22

Family
ID=6049257
Family Applications (1)

Application Number
Title
Priority Date
Filing Date

GB7931528A
Expired

GB2031346B
(en)

1978-09-12
1979-09-11
Writing device

Country Status (6)

Country
Link

US
(1)

US4377815A
(en)

JP
(1)

JPS5539098A
(en)

DE
(1)

DE2839664A1
(en)

FR
(1)

FR2436369A1
(en)

GB
(1)

GB2031346B
(en)

IT
(2)

IT1119365B
(en)

Cited By (1)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

DE19806525A1
(en)

1998-02-17
1999-08-19
Dia Nielsen Gmbh & Co Kg Zubeh

Ink guide wick and printing device

Families Citing this family (7)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

DE3227589A1
(en)

1982-07-23
1984-01-26
Hartmann & Braun Ag, 6000 Frankfurt
Print head for a multi-colour dot printer

DE3540138A1
(en)

1985-11-13
1987-05-14
Eckardt Ag
Writing device for a recording system

US5042978A
(en)

1989-08-08
1991-08-27
Eastman Kodak Company
Container using a mass of porous material for liquid retention

US5307357A
(en)

1992-11-05
1994-04-26
International Business Machines Corporation
Protection means for ridge waveguide laser structures using thick organic films

US5865115A
(en)

1998-06-03
1999-02-02
Eastman Kodak Company
Using electro-osmosis for re-inking a moveable belt

US6365968B1
(en)

1998-08-07
2002-04-02
Corning Lasertron, Inc.
Polyimide/silicon oxide bi-layer for bond pad parasitic capacitance control in semiconductor electro-optical device

US6374769B1
(en)

1998-09-17
2002-04-23
Fort James Corporation
Fluid material application system employing tube-in-hose heat exchanger

Family Cites Families (10)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

CH298936A
(en)

1952-03-08
1954-05-31
Amsler Alfred J & Co

Writing device for recorders.

US2800385A
(en)

1953-01-23
1957-07-23
Lloyd J Cannon
Ink feed apparatus

US3238533A
(en)

1964-03-12
1966-03-01
Bausch & Lomb
Recorder pen

US3264652A
(en)

1964-06-15
1966-08-02
John P Squier
Ink supply reservoir

US3299436A
(en)

1964-07-01
1967-01-17
Honeywell Inc
Recorder using dual capillary ink supply

US3441950A
(en)

1967-08-15
1969-04-29
Honeywell Inc
Recorder ink reservoir containing antibubble material

US3452361A
(en)

1967-12-22
1969-06-24
Leeds & Northrup Co
Ink supply for capillary pen

US3454952A
(en)

1968-02-21
1969-07-08
Leeds & Northrup Co
Three-pen chart recorder with individual pen lifting mechanisms

US3683410A
(en)

1970-08-05
1972-08-08
Beckman Instruments Inc
Rectilinear recording arrangement for direct writing oscillographs

US3774231A
(en)

1972-05-15
1973-11-20
A Tullos
Jewel tip capillary pen

1978

1978-09-12
DE
DE19782839664
patent/DE2839664A1/en
not_active
Withdrawn

1979

1979-09-11
GB
GB7931528A
patent/GB2031346B/en
not_active
Expired

1979-09-11
IT
IT68797/79A
patent/IT1119365B/en
active

1979-09-11
IT
IT7953559U
patent/IT7953559V0/en
unknown

1979-09-12
FR
FR7922823A
patent/FR2436369A1/en
active
Granted

1979-09-12
JP
JP11624279A
patent/JPS5539098A/en
active
Pending

1981

1981-08-11
US
US06/292,026
patent/US4377815A/en
not_active
Expired – Fee Related

Cited By (1)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

DE19806525A1
(en)

1998-02-17
1999-08-19
Dia Nielsen Gmbh & Co Kg Zubeh

Ink guide wick and printing device

Also Published As

Publication number
Publication date

IT7953559V0
(en)

1979-09-11

FR2436369A1
(en)

1980-04-11

DE2839664A1
(en)

1980-03-27

US4377815A
(en)

1983-03-22

JPS5539098A
(en)

1980-03-18

IT7968797D0
(en)

1979-09-11

IT1119365B
(en)

1986-03-10

GB2031346B
(en)

1982-09-22

FR2436369B1
(en)

1984-02-24

Contact information