DE1511383A1 - Tube writing tip for tube writing - Google Patents

Description

Ri * pe-Werk

Kieler str. 303 Hamburg, November 29, 1968 Rohroheacohreibapltze for tube pens

XML «The present invention relates to a tube pen for tube pens, consisting of an in one Holder insertable or screwable cylindrical Body, on the surface of which there is a screw-shaped winding sign and the one in the lower part Area holds a quiet pipe socket that is used in a bore la cylindrical body ends, this a drop weight with inclination turning receiving hole is connected to the Tlntenkaomar and has a Passage opening is connected to the helical ventilation channel. /

The tube pens used as drawing devices ^ are ^ - ^ .: .-. ■ ■: /::

generally stand out of a cold with one in these

■ ■ - / inserted or screwed-in tubular ear rasp tip; The latter usually consist of a cylindrical body with a bore that accepts a falling weight and a stirring tube holder

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passes through the writing tube ;; Drop weight and Hair wires are used to regulate the flow of tuse yeast and to avoid any blockages in the actual writing tube. It is known to have these tubular writing tips with a helically wound ventilation duct provided, the through a radial! passage opening in the upper portion of the cylindrical socket is connected to the ink chamber. This ventilation channel is used for Pressure equalization and absorbs the expanding ink; This prevents the ink from dripping out of the writing tube when it is heated or when there is a pressure difference. This helically wound ventilation channel had up to now a relatively large incline and was cut into the upper part of the cylindrical body of the tubular writing tip and ends approximately in the middle the tubular ear rubbing tip. As a result, the sinuous ventilation channel was on the same outer surface as the narrow screw thread with which the tubular writing tip is fastened in the holder of the tubular ear driver will. These tubular writing tips are with their rear opening, so with the opening of the bore in the cylindrical body with the ink chamber located in the holder in connection, which either fills the entire shaft or has the shape of a closed cylindrical plastic tube or a cartridge and

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'■ - ■ j · -

on the rear or inner end of the tube pen tip is postponed "

All these arrangements have two major disadvantages: on the one hand, two overlapping threads with different pitches, namely the ventilation channel and the screw thread, have to be cut on the writing tip, which makes production considerably more complicated and expensive; on the other hand, the relatively short ventilation indicator comes into contact with the outside air too early, so that ink dries up and the ventilation duct clogs. This in turn results in an uneven flow of ink or requires more frequent unscrewing and annoying cleaning of the threads on the writing tip. In addition, the screw thread is stuck with dried up ink "which makes the removal of the pipe-eartip " SHMMMk difficult or impossible.

The present invention has the task of to eliminate these disadvantages without abandoning the basic principle Construction of such tubular ear tips with falling weight to deviate or to use complicated injection molding tools. , .- '"■■■

The present invention is based on the finding that

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68 it is more expedient »instead of a relatively short auxiliary duct to provide a compensation channel« which is connected to you with the outside air, boar is so long that the pressure drop of the water vapor partial druoke is distributed over such a long distance » that no drying out occurs. If you now bring the compensation kaaner on the inner or rear part of the in the Ink reservoir # inserted cylindrical body an «this canal can be designed as a winding with a flat incline and made long enough. Through this there is also the installation of two overlapping ones Threaded avoided, on the other hand, the cleaning of the Ausgleiohskammer is made much easier, because when refilling only with a blotter or water inwards cleans the extended end of the cylindrical body with the now exposed compensation chamber, or removes any deposits that may be present.

Accordingly, the present invention relates to Consisting of a tube ear slot for tube pens from a cylindrical body that can be inserted or removed from an old one, on the surface of which a helical winding duct is provided and the tube insert in the lower area

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The socket is held in a bore in the cylindrical Body ends, this being a drop weight with cleaning wire receiving bore with the ink chamber in Yer ~ . '' bond-stands .and'over a passage opening with the helical supply channel is connected · «. '

The inner end is preferably designed to be elongated that at the end of the cylindrical body a after inside protruding pin of smaller diameter than that of the cylindrical body is provided and against » This is offset by a ring shoulder the thread serving as a compensation chamber on the after on the inside protruding pegs cut “On this The spigot then becomes the ink storage container or the ink . cartridge pushed open.

Another particularly suitable training is the discharge chamber via an orifice channel, which either leads as a radially outward incision Bing shoulder is incised, or over one after outside leading bore connected to the outside air, which axially parallel, is the wall of the cylindrical body = is arranged and in the truncated conical area of the tube » Chen mount ends within an attached sealing cap.

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Xn following · «» oil the invention with reference to drawings

nther be explained * it »peculiar»

71g! - "In" a partially cut view of a known type of Sohreibspltse;

Pig.2 - a section through a writing tip according to the invention with radially directed mouth corners Ausglclehskaomer;

71g «? - a section analogous to FIG. 2 with aohsparalleleia MUndungalcanal

The previously known Röhroheneohreibspltse in? Lg "1 consists of a sylndrlschea body 2 with a hole 6 that receives the falling weight 4 and one that attaches to the syUndrieoh"! Body 2 aneohlleeenden stirring tube holder 8 "with the Sohreibröhrofeen $ _t from which the hair wire 10 attached to the drop weight protrudes. In the upper area of the cylindrical body 2 there is a plug or thread surface suitable for fitting the tubular ear elbow into the holder, usually a narrow thread area 12. which at the top en-4et.

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I still know the "upper part of the syllable body" 2 a metal bracket 18 should be provided which prevents the falling weight 4 from falling out upwards, but trotssden one manual cleaning movement without removal * take the weight of the fall. Metal bracket 18 is U-fdraig trained and prevents one after outward movement dee Fellgewichtes desaen '™

The two side arms 24 of the brackets 18 are directed outwards with their lower ends 26 and engage radially arranged openings 28, of which at least one - as shown in PIg ₀ I - is connected to the belt lift sign X4 Let · The cylindrical body 2 has at the end a collar £ 2 with SchlüsaelflÄohen, after which the cylindrical body is conical in the direction of the tubular bevel. At the other end, the bore is in direct or indirect communication with the ink chamber.

The execution phones _{shown in Fig. 9} 2 and> have the same structure with regard to the parts provided with the same reference 11 "where instead of the safety plate 24 an annular insert 25 is provided in order to avoid the falling weight" 4 ... see below.

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In the embodiment according to the invention shown in FIG a thread 42 serving as a compensating chamber is cut on the inner end 40 of the cylindrical body a » that in an incision 46 leading radially near the outside on the annular shoulder surface 4? ends, which is bsw by the difference in diameter between the cylindrical body 2 and the rear end. Cones 40 result · The ink chamber 44 is placed on the pin, the inner wall of which covers the Ausglelohskaramer 42.

At the in Flg.? The training shown is also on the extended end 40 * the compensation chamber 42 * in Form of a thread with a flat pitch attached. However, this ends in an axially parallel one Bore 46 °, which is in the truncated conical area 8 the tube socket opens. In the push-on cap 48, a sealing insert 50 is preferably used to the To reduce the air space in the cap as much as possible, which also prevents the ink from drying out. This gasket 50 rests with a lip 52 in a sealing manner the front part of the cylindrical body and seals the air space 36 sufficiently. It is essential that the opening 34 of the aoh-parallel bore 46 in these sealed space between tubular socket and sealing insert 50 opens.

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Claims (2)

plant 0> t - 9 - (4083) , 89. 1 511383 EH »? ·« 5 ? a Hamburg h β Riepe -
2 Hambu sprue Kieler e η t at November 1968 j. Köhrohenechreibcplfcse for tubes Schreiber consisting Jt of an insertable into a holder or screwed cylindrical body, a schraubförmlg spiral Beltiftungskanal istund provided on the surface of the lower portion holds a eingesetste Ruhrohenfassucg 'ends llndrleohen in a bore in gy · body, said a drop weight is connected to the ink chamber with a holding wire receiving hole and is connected to the helical ventilation channel via a passage opening, characterized in that * on the inner end (40) of the ink tank inserted cylindrical body (S) Serving as an Auegl «iQh £ kaiimer and Beltiftungskanal Thread (42) is cut with a flat slope, the Mfe the outside air is in communication. 2. Röhrohenschrelbspitze according to claim 1, characterized in that » <SaS at the end of the cylindrical body (2) . ORIGlNAL BATHROOM 909124/0173 - ίο - an inwardly protruding pin (40) of a smaller one! Diameter than that of the cylindrical body (2) is provided, and opposite this by a Rlngsohulter is offset, with that as a compensating cannon serving thread (42) is cut on the inwardly protruding pin (40). j5. Tube writing place according to claim 1 to 2, characterized characterized in that the compensation chamber (42) over an orifice channel (46; Pig.a), which as radially after outside leading incision is cut in the ring shoulder, connected to the outside air * 4, horn tip according to claims 1 and 2, characterized in that the compensation chamber (42) is ^{connected to the outside air via an orifice channel (46 s} , Fig.?), Which is arranged as an outwardly leading bore parallel to the axis in the wall of the cylindrical body and ends in the truncated conical area of the pipe bevel inside an attached sealing cap BATH ORIGINAL