GB2119320A

GB2119320A - A pencil for example a cosmetic pencil

Info

Publication number: GB2119320A
Application number: GB08300162A
Authority: GB
Inventors: Peter Weckerle
Original assignee: Individual
Current assignee: Individual
Priority date: 1982-04-23
Filing date: 1983-01-05
Publication date: 1983-11-16
Also published as: DE3215215A1; JPS6227804B2; FR2525446A1; DE3215215C2; FR2525446B1; GB2119320B; GB8300162D0; JPS58188404A

Abstract

A pencil (1), more especially a cosmetic pencil, comprises: handle part (2), a plunger (3) which is received therein and a sleeve-shaped screw part (4), into which a spreadable body (5) has been inserted. The screw part (4) is arranged so as to be rotatable with respect to the handle part (2) and has been screwed on the plunger (3) which is provided with an external thread. The screw part (4) is held on the handle part (2) so as to be undisplaceable in the axial direction. The plunger (3) is held in the handle part (2) so as to be secured against rotation and so as to be axially movable. By this means, the plunger (3) is moved into the screw part (4) when the screw part (4) is rotated. <IMAGE>

Description

SPECIFICATION A pencil for example a cosmetic pencil The invention relates to a pencil, more especially a cosmetic pencil, comprising a handle part, a plunger received therein and a sleeve-shaped screw part which is filled with a body capable of being spread and which is arranged so as to be rotatable with respect to the handle part and which has been screwed on the plunger provided with an external thread.

Such a pencil is known (DE OS 27 28 969). This pencil is distinguished in that it is simple in construction and comprises few components so that it can be produced at low cost. To operate the pencil, the screw part is rotated relative to the handle part so that it is screwed on the plunger which is fixedly received in the handle part; during this process, the spreadable body filled into the screw part is screwed out in accordance with the rotational path travelled, while the screw part is screwed into the handle part to an increasing extent. As a result, with the screw part screwed into the handle partto an extent corresponding to the consumption of the body, it is no longer possible to hold the pencil as a whole easily by hand so that the handling thereof is rendered difficult if a large proportion of the spreading material has been used up.

It is an object of the invention to provide a pencil, more especially a cosmetic pencil, wherein, in spite of the exhaustion of the spreadable body as a result of use, the total length of the pencil, in other words the handle part and the screw part received therein, remains unchanged and the pencil can thus still be easily handled even though the spreadable body has been used up to a very considerable extent.

The invention provides a pencil, more especially a cosmetic pencil, comprising a handle part, a plunger which is received therein and a sleeve-shaped screw part which is filled with a spreadable body and which is arranged so as to be rotatable with respect to the handle part and on which there is screwed a plunger provided with an external thread, characterised in that the screw part is held on the handle part so as to be undisplaceable in the axial direction, and in that the plunger is held in the handle part so as to be secured against rotation and so as to be axially movable so that, as the screw part is rotated, the plunger can be moved thereinto.

The screw part can be held so as to be rotatable relative to the handle part but so as to be undisplaceable in the axial direction, whereas the plunger is held so as to be secured against rotation in the handle part but so as to be axially movable. When, during use of the pencil, the screw part is rotated, the plunger, which is displaceable in the handle part, is inserted into the interior of the screw part and presses out the spreadable body filled into the screw part. By this means, the spreadable body is extended from the screw part without shortening the length of the screw part section that projects beyond the handle part. This allows the pencil to be easily handled at any time, that is to say even if the spreadable body has been nearly used up.

Expediently, the screw part is held in the handle part by way of a snap connection, which facilitates the assembly of the pencil and also permits the exchange of an empty screw part for a filled screw part. The snap connection can be realised in a simple manner as far as the production technique is concerned, in that there projects from the inside wall of the handle part an internal bulge which co-operates with an annular groove, which has been expediently produced by pressing, in the screw part.

Good centring and stable supporting of the cosmetic pencil are ensured in that the internal bulge of the handle part and the annular groove in the screw part are provided at a distance from the respective end of the handle part and the screw part respectively.

An advantageous securing against rotation of the spreadable body inside the screw part, for the purpose of subsequently sharpening the pencil, is expediently brought about by longitudinal ribs on the internal wall of the screw part. However, also expedient is a non-circular design of the internal cross section of the screw part, which is advantageously formed by a metal sleeve, whereas the handle part and the plunger may be made of plastics material.

Hereinafter, an exemplified embodiment of the invention will be described with reference to the drawing, in which Figure 1 shows a sectional view of a constructional form of a cosmetic pencil according to the invention, Figure 2 shows a sectional view through the screw part of the pencil shown in Figure 1, Figure 3 shows a view of the plunger, Figure 4 shows a sectional view of the handle part, and Figures 5, 6 show sectional views of the screw part, as shown in Figure 2, in the reception zone of the spreadable body.

The cosmetic pencil generally marked with the reference symbol 1 in Figure 1 consists of substantially of three components, namely a handle part 2, a plunger 3 received therein as well as a screw part 4.

For the sake of clarity, the closing cap, which is plugged on from the left-hand side in the illustration of Figure 1, is not shown.

As can be seen particularly clearly in Figure 2, the screw part 4 is formed by a tubular sleeve, in which a spreadable body 5 has been received - to be more precise, into which it has been filled. The spreadable body may be a lip-stick compound orthe like.

Beneath the reception zone 6 for the body 5, the screw part 4 has an indentation 7, the formation of which causes an annular groove 8 in the external surface of the screw part 4, on the one hand, and a torus 9, which projects from the internal surface of the screw part 4, on the other hand. When the screw part 4 is inserted into the handle part 2, an internal bulge 10 is formed at the upper end of the handle part 2 engages in the annular groove 8 in the screw part 4 in the manner of a snap connection. By this means, the screw part 4 is held so as to be undisplaceable in the longitudinal direction relative to the handle part 2 but can be rotated relative to the handle part 2. The internal bulge 10 may be formed by individual radial projections, but expediently the internal bulge is formed so as to extend in a ring-like manner on the internal surface of the handle part 2.

Both the annular groove 8 and the internal bulge 10 are provided at a distance from the nearest end, thus causing centring to be brought about when the screw part 4 has been inserted into the handle part 2.

By this means, the stability of the pencil is also increased.

As can be furthermore seen in Figure 2, the screw part 4 has on its internal surface a thread 11 which co-operates with an external thread 12 formed on the plunger 3. The thread 11 is expediently formed by being rolled on the torus 9 projecting from the internal surface of the screw part 4, for example a metric thread having a pitch of 0.5 mm having been rolled thereon in a non-cutting manner.

The plunger 3 is arranged in the handle part 2 so as to be secured against rotation but so as to be longitudinally displaceable. For this purpose, the end of the plunger 3 that is at the handle end is provided with a radial projection 13 in the form of a rib which co-operates with a continuous longitudinally extending rib 14 on the internal surface of the handle part 2. As can be clearly seen in Figure 1, the radial projection 13 overlaps the rib l4ofthe handle part 2. This ensures both a securing against rotation of the plunger 3 and a longitudinal guidance of the plunger 3.

The operation of the pencil is as follows. If the spreadable body 5 is to be extended further from the screw part 4, then the screw part 4 is rotated. By this means, the thread 11 co-operates with the external thread 12 of the plunger 3. However, since the plunger 3 is arranged in the handle part 2 so as to be secured against rotation but so as to be axially displaceable, the plunger 3 is thereby caused to be moved relative to the screw part 4 and with its front face presses the spreadable body 5 from the screw part 4. By this means, the spreadable body 5 is indeed extended but at the same time the screw part 4 is prevented from being inserted into the interior of the handle part 2 by a shortening of the length projecting beyond the handle part 2.

In order to be able to withstand bending stresses, in particular, the screw part is expediently made of metal. In order to allowthe lead-like spreadable body 5 received in the screw part 4to be subse quently sharpened, the body 5 is accommodated in the screw part 4 so as to be secured against rotation.

As shown in Figures 5 and 6, this is effected by way of form-locking. According to Figure 5, several longitudinal ribs 15 have been formed for this purpose in the reception zone 6 of the screw part 4, which are distributed over the circumference.

According to Figure 6, there is used a screw part 4 having a non-circular cross section. A hexagonal or oval cross section is particularly suitable therefor.

Claims

1. A pencil, more especially a cosmetic pencil, comprising a handle part, a plunger which is re ceived therein and a sleeve-shapd screw part which is filled with a spreadable body and which is arranged so as to be rotatable with respect to the handle part and on which there is screwed a plunger provided with an external thread, characterised in that the screw part is held on the handle part so as to be undisplaceable in the axial direction, and in that the plunger is held in the handle part so as to be secured against rotation and so as to be axially movable so that, as the screw part is rotated, the plunger can be moved thereinto.

2. A pencil as claimed in claim 1, characterised in that the screw part is held in the handle part by a snap connection so as to be axially undisplaceable.

3. A pencil as claimed in claim 1 or 2, characterised in that from the internal wall of the handle part there projects a preferably ring-shaped internal bulge which engages in a correspondingly formed annular groove in the external surface of the screw part.

4. A pencil as claimed in claim 3, characterised in that the internal bulge is formed on the end of the handle part that is at the screw part end, and in that the annular groove is formed so as to be a short distance from the end of the screw part that is at the handle part end.

5. A pencil as claimed in claim 3 or 4, characterised in that the annular groove in the screw part is formed by an indentation which projects as a torus from the internal surface of the sleeve-shaped screw part.

6. A pencil as claimed in claim 5, characterised in that there has been formed into the inwardly projecting torus of the screw part a thread which cooperates with the external thread of the plunger.

7. A pencil as claimed in one of the preceding claims, characterised in thatthe plunger has a radial projection which overlaps a longitudinally extending rib which projects from the internal surface of the handle part.

8. A pencil as claimed in claim 7, characterised in thatthe radial projection of the plunger is formed on the end thereof that is at the handle part end, and in thatthe rib extends from the bottom of the handle part substantially as far as the internal bulge in the handle part.

9. A pencil as claimed in one of the preceding claims, characterised in that the spreadable body is secured against rotation in the screw part by way of form-locking

10. A pencil as claimed in claim 9, characterised in that the screw part on the internal surface in the reception zone of the spreadable body, has longitudinal ribs which are distributed over the circumference, and is provided, at least in sections, with a non-circular internal cross-section.

11. A pencil as claimed in one of the preceding claims, characterised in that the screw part is formed by a metal sleeve.

12. A pencil substantially as hereinbefore de scribed with reference to and as iliustrated in the accompanying drawings.