DE1511307A1 - Writing or drawing pen with a retractable lead tip - Google Patents

Description

Chao Fu CHIU 73 Yung Ho Road,

Chung Yuan Village, Chung Ho TAIPEI HSIEN, TAIWAN (China)

Li HUNG 100 Chung Yi Road,

Pax Chin Li, Central District TAINAn ₅ TAI ¹ WAN (China)

Writing or drawing pen with retractable lead tip,

The present invention relates to a new and useful one Formation of a writing or drawing pen, with a plurality Cartridges each carrying a lead tip within a hollow grip piece in the longitudinal direction behind or on top of each other and at the same time are arranged displaceably in the direction of the writing tip and wherein the lower or front cartridge, the tip for writing or drawing is provided, advanced by a pressure on the upper, at the other end of the handle piece protruding cartridge will.

18004. 12D.1 ΒΠ / W / km 909829/0217

The main advantage of this invention is that the usual sharpening of the pencil is not necessary if its lead has become blunt or has broken off. The subject of the invention should be the usual Replace pencils whose lead is embedded in cedar wood because it is made of plastic or similar cheap materials can be. Furthermore, in the subject matter of the invention, the The lead is held firmly at the writing tip, which prevents it from breaking off easily, as is always the case with normal Twist and filler pens occurs.

In the accompanying drawing is an exemplary embodiment of the subject matter of the invention, showing:

Figure 1: a side view of the pin, Figure 2: a longitudinal section thereof and

Figure 3: a longitudinal section through some arranged one behind the other Cartridges,

As can be seen in Figures 1 and 3, the cartridges 1 are cylindrical and here have a section la smaller diameter in which the lead tip 2 sits. The other cartridge part Ib with a larger diameter is on the other end equipped with an axial bore Ic, which consists of two sections. The front section of this is used

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with a smaller diameter to protect the lead tip Z and the rear section with a larger diameter for receiving the front part la of a cartridge arranged behind or above it. The handle piece 3 is hollow and provided at both ends with a guide sleeve, of which the front 3b is arranged with a hole 3b 'on the writing side of the handle piece and the other 3c with a hole 3c ¹ at the other end of the handle. The front sleeve 3b is designed so that it holds and guides the cartridge portion Ib with a larger diameter. The guide sleeve 3c at the other end, which also guides the cartridges at the section Ib with a larger diameter, is provided at its inner end 3c ^u with radially inwardly directed elastic stops in order to insert the cartridges into the interior of the hollow handle 3 on the one hand and, on the other hand, to prevent the cartridges from shifting backwards due to the pressure on the nib when writing or drawing.

When using the pen or pen according to the invention the lead 2 of the lowest or foremost cartridge normally protrudes from the writing tip of the handle 3 for writing or drawing out. If this lead has become dull or has broken off through prolonged use, the cartridge will be removed from the pulled out front sleeve 3b and with its front end la in the hole Ic of the last, out of the sleeve 3c at the other end the handle piece inserted protruding cartridge, whereupon by

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light pressure pushes the cartridges forward at the same time until the lead of the next cartridge appears at the writing tip 3b of the handle.

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Claims (5)

PATENT CLAIMS 1. Writing or drawing pen with a retractable lead tip, characterized in that within a hollow handle (3) a plurality of cartridges (1), which can be displaced at the same time relative to the writing tip, are arranged behind or one above the other in the longitudinal direction which have a fixed lead tip (2) at their front end and an axial hole (ic) at their other end for receiving the lead tip of a cartridge located behind or above it. 2. writing or drawing pen according to claim 1, characterized in that that the cartridges are cylindrical and have a section {la) have smaller diameter, which carries the lead tip (2) and in a corresponding cylindrical, with an annular shoulder provided bore (ic) of the cartridge in front of it or below it. 3. writing or drawing pen according to claim 1 and 2, characterized in that that at the rear end inside the hollow handle (3) a stop to prevent a backward displacement of the Cartridges is provided. 909829/0217 4. writing or drawing pen according to claims 1-3, characterized in that that at the upper and lower end partly inside and outside of the hollow handle arranged guide sleeves (3b, 3c) for which the cartridges are intended. 5. writing or drawing pen according to claim 3 and 4, characterized in that that the upper guide sleeve (3c) is provided at its inner end with radially inwardly directed stops (3c "). 909829/0217