DE7212354U - WRITING DEVICE WITH A ROD-SHAPED WRITING TIP WITH CAPILLARY CAVITIES - Google Patents

Description

12,835 30 / öi

Company J. KREUZER, 5300 Bonn-Duisdorf, Bonner Stracse

Writing implement with a rod-shaped writing tip with capillary cavities

The invention relates to a writing implement ^ It one that Shaft containing writing material and a capillary hollow space for conveying the writing material rod-shaped writing tip, which is guided in a front-side axial bore of the shaft and against Shift in the shaft is secured. Such writing implements are generally - sometimes incorrectly referred to as fiber pens.

7712354-6.7.72

The writing tip is one of the known writing implements of this type generally in the axial bore of the shaft Presbitz set. This often means that the The writing tip is compressed too much and the capillary cavities are at least partially closed, see above that no proper ink flow from the reservoir or the like in the shaft to the front linden of the writing tip is guaranteed is. If the due to the press fit on the If the pressure exerted on the writing tip is reduced in order to avoid the aforementioned angle, there is a risk that the tip slips into the barrel or housing of the writing instrument when the writing pressure is increased.

The aim of the invention is to remedy this situation and provide a way of fixing the writing tip at the front end of the To indicate the shaft, which on the one hand always ensures a perfect flow of writing medium to the front end of the writing tip, on the other hand, however, an undesired displacement of the writing tip is reliably prevented.

To solve this problem it is proposed according to the invention in a writing instrument of the type mentioned that the axial hole guides the writing point loosely and on the ' The writing tip is placed outside the shaft with a holding element resting on the front of the shaft. which the extent the writing tip only on a few spatially narrowly

- 3 th, spaced-apart places with pressure applied,

Appropriately serves as a holding element over the The writing tip is a pushed-on metal ring with indentations around the circumference of the writing tip in some places has, wherein preferably at most two indentations are provided. But it can also be used as part of the invention Holding element a pushed over the writing tip, this comprehensive and the circumference only in a few places adjacent Serve spring element.

Due to the fact that the H.; ^ Element only presses against the edge of the writing tip in a few places ensures that the capillaries of the writing tip are at most small, the flow of writing medium only insignificant impairing areas are destroyed. In this case, the pressure of the holding element against the circumference of the The writing tip can be chosen so high that there is also a reliable displacement of the writing tip with respect to the shaft is avoided with high writing pressure. The indentations provided when using a metal ring as a retaining element can be attached, for example, by means of a point as sharp as possible or a similar tool.

The above-mentioned holding element secures the writing tip against displacement in the shaft. To now an unintentional

To prevent the tip from falling out of the shaft, the invention voi "2« sshsn; that into the shaft

protruding end of the writing tip on the inside of the shaft adjacent securing element is placed, which the writing tip while exerting low pressure on its circumference secures against falling out of the shaft. As a securing element, a writing tip with a low Pressure applied ring made of rubber, plastic, metal or a material with the same effect are used.

Other features. Details and advantages of the invention emerge from the following description of a preferred one Embodiment based on the Zeiohnung. Show it:

Figure 1 is a longitudinal section through a complete

Writing instrument and
Figure 2> on an enlarged scale the front part of the

Writing implement of Figure 1.

The writing instrument shown has a known manner an approximately cylindrical shaft D in which a storage body E for the writing material is housed. The shaft D is closed on the back by a stopper F or the like.

As the drawing clearly shows, the Shank D at its front end an axial bore in which the capillaries exhibiting, approximately rod-shaped writing tip B is performed. The rear end of the writing tip.B protrudes into the storage body E. Your front End protrudes beyond the shaft.

The writing tip B is guided loosely in the axial bore of the shaft D without pressure. To define the writing tip an Iletall ring A pushed onto its front end serves, the circumference of the writing tip B in the area of at least one indentation produced, for example, by means of a center punch is applied under relatively high pressure. As a result, the metal ring A is against axial displacement with respect to the writing tip B secured. The writing tip B can therefore also when a relatively high writing pressure in the direction of the arrow is applied, not be shifted into the interior of the shaft D. Because the impressions are only in places on the writing tip B, the structure of the writing tip, i.e. the capillaries, can only be destroyed at these points so that there is still a sufficient flow of ink from the storage body E through the writing tip B,

The writing tip is B geoiehert against falling out of the AVS "ohaft D in the present case by a aufge'sQhobenen to the writing point B inside the shaft rubber ring C, the

against the resulting tapering of the shaft
Make inclined surface of the inner wall of the shaft. Instead of the rubber ring C, another securing element, for example a metal ring, a ring made of plastic or cardboard or the like, could of course also be used. This securing element only has to be designed in such a way that it is only very slightly
Exerts pressure on the circumference of the writing tip B, but is nevertheless adequately secured against axial displacement on the writing tip. '

Claims (5)

Protection claims 1 _t writing implement with a shaft containing the writing medium and a rod-shaped writing tip with capillary cavities for conveying the writing medium, which is guided in a front axial bore of the shaft and secured against displacement in the shaft, characterized in that the axial bore loosens the writing tip (B) and on the writing tip outside of the nose (D) a holding oil element (A) is placed on the front side, which is applied with pressure to the circumference of the writing tip only at a few spatially narrow, spaced-apart points. 2. A writing instrument according to claim 1, characterized in _t that as a holding member, a pushed over the writing tip (E) Hetallrir.g (A) is used, which at some points | indentations adjacent to the circumference of the writing tip j having. . j 3. Writing implement according to claim 1 and 2, characterized in that _i ! net that the metal ring (A) has at most two indentations aufv-eist ;. 4. Writing implement according to claim 1, characterized in * that a holding element (A) pushed over the writing tip (B), encompassing it and only around the circumference in some places the spring element is used. 5. Writing implement according to one or more of the preceding claims, characterized in that the in the The end of the writing tip (B) protruding from the shaft (D)? Shank ison-side adjacent securing element (C) is placed, which the writing tip while exercising little pressure on their circumference against falling out secures the shaft. 6, writing implement according to claim 5 * characterized in that that as a securing element one of the writing tip (3) Ring (C) made of rubber, plastic, metal or a functional material that is in contact with low pressure served