DE1461596A1 - Two-color exchangeable writing device, especially two-color exchangeable ballpoint pens - Google Patents

Description

A. W. Faber-Castell, Stein near Nuremberg

Two-color interchangeable writing instrument. especially two-color interchangeable ballpoint pens

The invention relates to a two-color interchangeable writing device, in particular a two-color interchangeable ballpoint pen, in which each of the two writing medium carriers has its own return spring and a push button protruding from the holder shaft having, by connecting one writing medium carrier upstream by using a switching ball, the other is automatically reset by its return spring.

According to the German utility model, it is probably 1 755 326 known from simple ballpoint pens, in which the refill is pushed back and forth by pressing the push button is going to use a shift ball. Even with a two-color ballpoint pen according to the Belgian one Patent specification 623 668 has already proposed the use of a switching ball, but this is only used for deflection of the printed parts and not for the plague of the Mine bearer. This requires the additional arrangement of a plate-shaped intermediate part in which the ball is mounted transversely.

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The invention has now set itself the task of providing a switching mechanism for two-color alternate writing instruments create a simplification through the simple design of the upper part of the writing instrument and the two pressure parts and cheaper production is made possible. This is achieved in that known as a switching element Way a ball is used, which is directly within the contact surfaces of the two pressure parts during the switching process is mainly moved transversely to the advance direction, but at the same time in oblique grooves of the two Printing parts runs and in the two end positions in notches, which are provided in the housing part, engages and thus the Specifies printing parts in the end positions.

The χ -shaped overlapping one over the entire width The grooves reaching the pressure parts are two opposing bores or recesses in the upper part of the shaft as locking devices provided, the inclined grooves having a grid extension at the top and an inclined outlet at the bottom. In order to achieve a precise switching movement, the two lead carriers are on the one hand with their pressure part in the Shaft upper part and on the other hand with its feed rod in the intermediate part connecting the two shaft parts of the holder guided. The return springs of the mine carriers are in a known manner as coil springs around the preferably somewhat elastic designed feed rod arranged so that

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they are on the one hand at the intermediate part and. on the other hand at the shoulder of the back support τοη support the feed rod to the pressure part.

The connection of the feed rod to the pencil lead is made either by means of a plug-in sleeve or by means of an insert pin.

In the drawing is an embodiment of the invention shown and subsequently explained in more detail,

Ee shows:

1 shows a longitudinal section through a two-color exchangeable ballpoint pen with a switching ball and inclined grooves in the printing parts,

FIG. 2 shows the object of FIG. 1 in a position rotated by 90 ° in a partial longitudinal section,

3 shows a view of the object of FIG. 2 from above onto the printing parts,

FIG. K shows a cross section through the object of FIG. 2 along the section line IV-IV and

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5 shows a printed part of the object of FIG. 1 and 2 in view,

The two-color interchangeable ballpoint pen according to FIGS. 1 and 2 consists of the upper housing part 1 and the shaft part 2, which are connected to one another by the intermediate piece 3. In the upper housing part 1, the two mine carrier pressure parts 4 and k ^{% are} slidably mounted, which at the lower end in the feed rods 9 and 9 * pass over, the return springs 8, designed as helical springs, being pushed over the Vbrschubstäben 9 and 9 * and supported on the one hand on the intermediate part 3 and on the other hand on the pressure part k or k ^l .

The ballpoint pen refills 6 and 6 are fastened to the feed ^{rods 9 and 9 1} by barbed insert pins 7. The grooves 10 and 10 'of the uniformly formed printing parts h and k ^% are, as already mentioned, arranged at an angle and point at the upper end a grid extension & or a ¹ , while they run out diagonally at the lower end b and b ^1. The switching ball 5 runs halfway in the grooves 10 and 10 * and, in the advanced position, engages in bores c or c ^{1 of} the upper housing part 1.

Both leads are in the rest position of the writing instrument «, carrier in retracted position; so both return

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Adjusting springs push the mine carriers upwards so far that both pressure parts protrude from the upper part of the housing. The grooves 10 and 10 'are χ -shaped one above the other, the switching ball 5 being at the point of intersection. If, for example, the pressure part ^ 'in Fig. 1 or 2 is pressed down, the writing tip of the ballpoint pen 6 ¹ emerges from the shaft sleeve 2 and the switching ^{ball 5 engages with the grid extension a 1} in the hasty opening c ¹ , whereby the lead carrier 9 ¹ is fixed with the writing lead 6 'in the writing position.

If the other color is now to be selected, then only the other pressure part ^ needs to be pressed downwards, the sloping groove b pulling the switching ball 5 out of the locking, opening c ¹ and the lead carrier 9 'is pushed back by the return spring 8 and after complete advance, the locking of the switching ball 5 in the locking opening c or the grid extension a is achieved. The other lead color is now ready to write. The retraction of the advanced mine, without the other mine being advanced, also takes place by exerting a slight pressure on the pressure part protruding from the upper housing part. These embodiments of the two-color interchangeable writing instrument can advantageously be produced in plastic, with the

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Retaining clip I ¹ can be manufactured in one piece with the upper part 1 of the shaft.

ORIGINAL INSPECTED

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Claims (3)

Claims ί Egg-colored change pen, in particular two-color ballpoint pen, in which the other is reset by means of a return spring by connecting one pen holder upstream, a switching ball running in grooves being used to lock the pen holder, characterized in that the two identical push parts (k and JM) provided, inclined, x-shaped overlapping, through the entire width of the pressure parts (k and If- ¹ ) reaching grooves (10 and 10 ·) at the upper end of grid extensions (a or a ¹ ) have »so that each half The switching ball (5) running in the grooves (10 and 10 ') engages alternately in the two bast holes (c and c ¹ ) of the upper shaft part (1) or through the diagonally outgoing groove ends (b and b ') are disengaged, the switching ball (5) executing a transverse movement between the locking holes (c and c ¹ ). 8O9P1? / O12O 2.) two-color change pen according to claim 1, characterized in that the connection of the resiliently designed feed (9 or 9 ¹ ) with the refill (6 or 6 ¹ ) by means of an insertion pin (7 or 7 ¹ ) or known by means a receptacle takes place; 3.) two-color change pen according to claim Γ or 2, characterized in that the clip (I ¹ ) is made in one piece with the upper shaft part (1) in a known manner. ORIGINAL INSPECTED 8 Π 9 ^ß · ? i η ι 2 0