DE1947777A1 - Writing instrument with retractable cartridge and an eraser arrangement - Google Patents

Description

PATENT LAWYERS 1 Q Δ 7 7 7

DR. ING. KARL BOEHMERT

DIPL-ING. ALBERT BOEHMERT

28 BREMEN, FELDSTR. 24

(0421) 491760

New registration '"

THE FABKEE PEN COMPANY

P 500 September 18, 1969

XHE FABKEB FSH COHPANT, Janesville, State of Wisconsin, (7th St.A.)

Writing implement with a retractable cartridge and a badier gate assembly

The invention relates to a writing instrument with one of a detachably arranged reciprocating cap covered bathing guaal assembly and one for To support this arrangement, iron the cap push-down drive component for a gate push mechanism.

To accommodate interchangeable pheasants, a known type of writing instrument uses a shaft which has a front a & d ice, en mi, t> these releasably connected. Seliiiuirüeil with ™ points! Fold the unscrewing of the? Mater-en tsils iron

ϊύΆ front tel 1 1, ila Fa bap 51 ma can »if i Mr* ifceri ^ aSt: you i, -j iclir «i

Advance and retract switching mechanism when a push button is located at the rear of the device or cap is actuated, on which or on which a through the detachable rear shaft part extending, the piston actuating the switching mechanism is attached

For Bauche execution forms of writing implements this Kind of installing an eraser in the device he wishes. In order not to impair the external appearance of the writing instrument, the eraser should be used be arranged under the reciprocating cap, and such an arrangement is special Desired if the device provided with the badler gum belongs to a set of two devices, in which the other device is provided with a removable cap · To serve its purpose the rubber should be arranged underneath the cap on the shaft of the device in such a way that it fits extends outwardly from the shaft after removal of the reciprocating cap. The shaft can can then be used as a handle during the bathing process.

Mechanical pencils are already known which have a step-by-step operation of a cap operated Blalvoa? Sehubv®r3? Ichtusg and. one on the shaft of the

Pen solidified and naea the removal of the? Cap exposed ladiergasmi aöfw8is @ 3Bu lsi these möeh & ßisslieii pens k <.in * b QIn _n 31 * Sie ™> ? Q? Seimbv @ ä? I; i @ btuiig "fcatltigenaer fei ^Λ - = ylvmI .icrt ^ who; dear component old dss? Kappo le ILr "fcx ig ^ 3T tea BmhBft-B kliä« imd

BAD ORlQlNAL

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which is fastened in the shaft in such a way that it cannot accidentally come free of the shaft "serves atich as a support for the eraser and closes the rear end of the shaft.

Pens of this type have the disadvantage that in them no self-contained as a whole replaceable cartridge containing the hardening substance can be accommodated. One reason for this lies in the fact that in pens of the expected kind no usable lifting mechanism for separating the and moveable components are provided from the shaft to enable a new cartridge to be inserted would.

It stands up to this state of the art The invention to be solved is part of his rear end old of a Hadi «r £ p3mI» © s & ii5Mg provided To create a writing instrument, the one she, closed one Whole, interchangeable cartridge and a switching mechanism for sliding or retracting The cartridge tip is contained in or out of the barrel, which is actuated by a cap that can be removed to expose the rubber band and is moved to and fro.

This task is initially carried out with a writing instrument & sr mentioned construction in that the writing implement is provided in a known manner with a replaceable as a whole by a Bückholfeder backwardly biased writing cartridge that the its rear end with the bath rubber arrangement provided, behind the cartridge arranged drive

009819/0480

BATH ORIGINAL

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part of a piston for actuating the cartridge has advancing and retracting switching mechanism and a spring located behind the cartridge, which counteracts its forward movement during the switching movement of the piston and supports its backward movement; that the backward movement of the Component-delimiting means that hold the component permanently on the writing implement to one on the front Shank part detachably attached rear shaft part are provided; and that the cap on the outside of the component and on the shaft of the writing instrument is slidable and within its Hanteis one on the rear Has the end of the component abutting socket, which passes the eraser.

An embodiment of the invention is set out below described with reference to the drawings. In the drawings is:

Fig. 1 is a longitudinal section through a designed in the manner according to the invention Writing implement;

Fig. 2 is a perspective view of part of the switching mechanism;

Fig. 3 shows a larger scale file of the in fig. 1 sectional view shown;

Fig. 4- a partial longitudinal section shown in a larger hatred of the rear rope of the Writing instrument with the cap removed and the rubber swab exposed thereby; and

Fig. 5 «a sectional view along the line 5-5 of Fig. A.

BATH ORIGINAL 009819/0480

General characteristics of the writing instrument

The ballpoint pen 10 shown in Fig. 1 as an example of a writing instrument consists essentially of a shaft 12, an exchangeable cartridge 14 containing the marking substance, a switching mechanism 16 for sliding the cartridge into place and withdrawing it, a rubber assembly 18 and a removable cap which can be moved back and forth The cartridge has a writing tip extension 22, the outer end 24 of which, provided with the writing ball 26, protrudes from a guide bushing 30 arranged at the front end of the shaft 12 in the advanced position of the cartridge. The cap 20 can be pushed down and then returns to its original position. When the cap is switched on, the switching mechanism 16 is actuated.If the projection 22 is in its position closed in the socket 50 before the cap is pressed down, it remains in its closed position after it has been brought into this position by the switching mechanism »Is in dlsssi? T -: - y raised position even when the Sap ^ i 20 has moved back. If the attachment αΐ-αΐΐ is in any case when the cap is pressed down, beyond the advanced position, sr l * 3i backward movement Abv cap In -sel; is : \ ίί? 1ύΐί £ ' ^ν ζζί £' ϊϊΐ position is moved *

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Although a ballpoint pen is shown in FIG. 1, the arrangement according to the invention can also be used with mechanical Pencils with a uniform whole, replaceable cartridges can be used. Ball pencils according to the invention are designed essentially in the same way as ballpoint pens, but provided with cartridges containing a different marking substance. In pencils with replaceable lead cartridges is used by the Switching mechanism 16 of the piston of the step-by-step lead pre-stroke mechanism of the cartridge is actuated.

Construction of the writing instrument

The shaft 12 of the writing instrument, which is essentially made of any suitable material _{9, for} example, plastic, is essentially made from a straight line. its conical "ίο & ΟΜ & βη Eisd" 3 a is provided with internal thread Bofcssg on, dia zw? A "a £ N = · aalüs® that (fewindaansatzes 52 ds-2? preferably from Kotall bestshdsdsn Fäh £ * uagslmel & £ & 30 serves _o Bie is located in the eiag @ eelsr-am & t ^? ea ^ ustaaü wlt eia © s? 34 sm loading of the shaft IS au

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BATH

The switching portion 38 is disposed relative verschiebllch In Figure ^1, the longitudinal direction of the main portion 36 and forms a part of the switching mechanism 16. The switching mechanism 16 includes a piston 61 which moves upon depression of the cap 20 downward and turns the switching section 38th

Between the approach 22 and the main portion 36 of the cartridge is a shoulder 40, which as The contact surface for the upper end of a return spring 42 surrounding the extension 22 is used, the other end of which is used rests against the guide bush 30

The one arranged to be longitudinally movable on the main section 36 Switching section 38 has buttons 44, 46 and 30, which are best represented from? Ig. 2 can be seen · This The buttons facing the rear end of the writing implement are equidistant from the axis of rotation of the Scheltabschnittte 38 about a central one Arranged opening around this section and preferably follow helical lines with a 45 ° pitch. The buttons 44, 46, 48 and 50 are curved in the same direction, so that when they hit a non-rotatably arranged Schaltabscunitc 55 of the piston 61 of the switching mechanism 16 are moved, the switching section 38 and thus also the entire cartridge 14 «give a turning movement. Buttons 44, 46 and buttons 48 and 50 are arranged side by side, while buttons 44 and 50 and 46 and 48 are separated from one another by longitudinal braids 52 and 54, respectively.

009819/0480 bad original

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To cover the cartridge 14 is at the rear end drs shaft 12 is a cylindrical rear shaft part 56 is provided (see FIGS. 1, 3, 4 and 5). This shaft part 56 is at its upper or rear End provided with an inwardly directed flange 58 surrounding a circular opening through that the piston 61 of the switching mechanism 16 extends up to the rubber assembly 18 · The with Internally threaded lower end of the shaft part 56 is screwed onto a threaded projection 62 of the shaft 12

In the vicinity of its front or lower end, the shaft portion 56 has a first shoulder 64 and in the See a second shoulder 66 on its upper end so that three steps on its outside there are extended cylindrical sections at the front. In diametrically opposed places the inner wall of the shaft part 56 are two in whose longitudinally extending stops 68 and 70 (see FIGS. 4 and 5) are pressed in, which extend from the inwardly facing flange 58 at the top of the Part 56 extend so far downwards or forwards that they cooperate with the switching section 38 can and this against the pressure of the return spring 42 either when they are on the buttons 48 and 44 abut, in its forward position, or, if it is in the slots 52 and 54 in a later even closer in the manner described, hold it in its rearward position

In order to be able to rotate the switching section 38, has the piston 61 has two projections 72 extending forwards in the longitudinal direction from the main piston part 82

BAD 009819/0480

and 74, each of which is complementary to buttons 44-, 46, 48 and 50 of the switch section 38 has formed surface · Furthermore, a coupling sleeve 76 is provided, which has bends at three points evenly distributed on its circumference (Fig. 5) is provided so that it fits snugly but slidably in the tubular dumbbell 94 of the sap 20 on » is taken. At the top or rear end is the sleeve 76 with an inwardly directed flange 78 Mistake. The central opening surrounded by this flange has the same size as a cylindrical opening 80 provided in the main piston part 82 and aligns with this opening. In order to press the projections 72 and 74 upwards, a helical spring 84 surrounding the main piston part 82 is provided, its lower end on the first shoulder 66 of the switching part 56 and its upper end on the after inwardly directed flange 78 of the coupling sleeve 76 rests. Bio inner opening 80 of the piston main part 82 has a hanging shoulder 86 which serves to support the rubber assembly 18.

To attach the actual eraser 28 is the arrangement 28 is provided with a cup-shaped holder 88, the bottom wall of which is provided with a cylindrical extension 90 extending downward into the opening 80 of the main piston part 82 » The extension 90 has an outwardly directed one that rests against the annular shoulder 86 of the opening 80 Flange 92 by means of which the holder 88 is attached to the piston 61. In the cup-shaped holder 88 Is a two-part locking ring holding the elastic cylindrical eraser 28 pressed together ) 3 with PreSsitz

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The tubular dumbbell 94 »of the cap 20 surrounds when the cap is placed on the writing instrument, the Switching mechanism 16 and part of the shaft 12. In the upper end of the handle 94 is one of the inner wall of the Hanteis adapted top closed socket 96 used, which is when the cap is attached to Flange 73 of the coupling sleeve 76 extends. In the upper end of the socket 96 is a clip retaining screw 98 screwed in with a cylindrical head 100, an annular groove remaining between the upper surface of the bushing 96 and the lower surface of the head 100, in which the eye-shaped ring portion of a clip 102 (Fig. 1) fits through the screw head 100 is pressed against the upper surface of the socket 96.

Mode of action

To get ready to write, this is done with the ball 26 provided outer end 24 of the cartridge from the shaft 12 of the writing instrument moved out · For this purpose, the cap 20 is pressed down during the Shank 12 is held. When moving the Cap 20 presses the lower end of the socket 96 of the cap against the flange 78 of the coupling sleeve 76, so that this because of the bends in its wall on the rear shaft part 36 with friction bearing sleeve slides axially downwards on the shaft part. Babel, the flange 78 of the sleeve presses the piston main part 82 and the Compression spring 84 of the piston 61 downwards, with the one connected to the piston by its extension 90 as well cup-shaped holder 88 of the eraser is moved

009819 / Oteq

During the downward movement of the piston 61, the gate projections 72 and 74 touch the buttons 44 and 48 of the Switching section and press it down. the Force exerted on these buttons pushes the cartridge 14 against the pressure of the return spring 42 downwards so that the outer end 24 of the nib attachment emerges from the guide bush 30. This force also causes the switching section 38 to rotate. With this one by the pressure The rotation caused by the gate projections 72 and 74 on the buttons 44 and 48 become the slots 52 and 54 of the switching section from the stops and 70 moved away.

Upon depressing, the cap 20 is released and begins to move through onto the piston 61 exerted pressure of the compression spring 84 and the pressure of the Bückholfeder 42 to move up. If the Moving cap 20 upwards, the buttons come up 44 and 48 to the stops 68 and 70 to the plant, since the switching section 68 has rotated by 90 °. The stops 68 and 70 then lock the further upward movement of the cartridge 14. Since the buttons 44 and 48 above the bottoms of the slots 52 and lie, the outer end 24 of the projection 22 by the stops 68 and 70 is advanced to the extent that Maintained position that the writing ball 26 is still outside the guide 30.

Dm pulling the writing ball 26 back into the guide 30, the cap 20 is pressed down again, as already described, against the pressure of the spring surrounding the main piston part 82 84 and the pressure of the return spring 42 moved downwards.

009819/0480

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Babylon come the buttons of the protrusions 72 and 74 on the buttons 46 and 50 of the switching section 38 to rest, so that this section rotates and moves in the longitudinal direction. The section 38 is rotated into a position in which its Slots 52 and 54 are aligned with stops 68 and 70 so that upon release of the cap the section 38 moves upwards and the Writing ball 26 looks back into the shaft 12.

When the arrangement according to the invention is used with a pencil instead of a ballpoint pen then the switching mechanism 16 and the step-sliding gate mechanism operate in as described in an earlier application (USA 572 240).

If a mistake is made while writing, the cap 20 is removed from the writing instrument, with her Dumbbell 94 on the rear shaft portion 56 and on the Coupling parts 8e 76 slides along. The cyclist rubber 28 is then exposed at the end of the writing instrument, so that its shaft 12 can be used as a handle during the erasing process.

If the cartridge is used up, the cap 20 is removed from the writing instrument and the rear shaft part 56 is unscrewed from the threaded insert 62 of the shaft 12, and together with the piston 61 and the? Eraser assembly 13 removed 01 cartridge 14 is then exposed and can be exchanged. Barauf the rear shaft part 56 is back on the Shank 12 screwed on.

009 819/0480 BAD ORIGINAL

Bas the writing implement 10 according to the invention thus has both an exchangeable cartridge 14 and one at the end of the Device attached eraser assembly 18, which is exposed after removing the cap 20, so dafi then the shaft 12 of the device can be used as a handle for the rubber. The switching mechanism for the device 10 is actuated by depressing the cap 20, the cap for actuating the switching mechanism in the described embodiment a ballpoint pen is used. The cap could also be used to operate a lead cartridge stepwise advancing feed mechanism can be used.

In the invention, a fixed part of the Switching mechanism forming the rear shaft part of the front end of the shaft to expose a the cartridge to be replaced must be unscrewed. A piston 61 forming part of the switching mechanism, which also serves to support the rubber assembly is on the rear shaft part by means of a clutch sleeve pretensioned at the rear by a spring movably arranged, an inwardly protruding flange being provided to limit the backward movement of the piston.

The embodiment of the invention described in detail above can be modified in many ways within the concept of the invention.

Claims (6)

Expectations 1. Writing implement sit a covered by a detachably arranged reciprocating cap Badierguaaianordnung and a serving to support this arrangement, depressible from the cap drive component for a writing tip feed mechanism, characterized in that the writing implement (20) in a known manner as a bit Ganses interchangeable writing cartridge (14) is provided which is biased towards the rear by a return spring (42); that the drive component (76, 61) provided at its rear end of the rubber assembly (18) and arranged behind the cartridge has a piston (61) for actuating the switching mechanism (16) which pushes and retracts the cartridge and a spring located behind the cartridge (84) which counteracts its forward movement during the switching movement of the piston (61) and whose Bückwärtsbewegu & g Un ⁴ T - ^ - StUtSt; that the Biickwärtebdwegung of Bauteilf "(76, 61) limiting the writing instrument _$ reserved · lütt the component permanently ·! (58) are provided on a rear shaft part (56) releasably attached to the front shaft part (12); and that the cap (20) is slidable on the part of the component and on the shaft of the writing implement and, within its casing (94), has a socket (96) lying on the rear end of the component and surrounding the bathing device. 9819/0480 ORIGINAL BATHROOM -IS ^- 2. Device according to claim 1, characterized in that that the component (76, 61) is provided with an inwardly directed flange (78) at its upper end Has coupling sleeve (76) which is in Beilrongs contact with the detachable shaft part (36) is 5 and that the The cap (20) has a shoulder resting on the flange (78) of the sleeve (76). 3. Device according to claim 2, characterized in that that the coupling sleeve (76) at least one for its length a non-cylindrical shape and a has such an inner diameter that it rests closely with frictional contact on the shaft (36, 12) of the writing instrument. 4. Apparatus according to claim 2 or 3, characterized in that the tob flange (76) of the coupling sleeve (76) the surrounding opening serves to receive a projection (90) which extends forward from a cup-shaped cyclist rubber holder (88) and which is connected to the piston (61); and that the component (76, 61) the spring (84) biases the piston backwards (61) and with one end on the flange (78) the coupling sleeve (76) and at its other end a part (36) of the shaft of the writing instrument rests. 3 · Device according to one of claims 1-4, characterized characterized in that the rear shaft part (36) is connected to the front shaft part by a threaded connection connected is· 6. Device according to one of claims 1-3 »thereby characterized in that the cartridge (14) has buttons (44, 46, 48, 30) at its rear end which 009819 / 0A80! BAD ORiQtNAL cooperate with the piston (61) provided means (72, 74) so that when they move back and forth given a longitudinal and a rotary movement of the piston. 7 · Device according to one of the preceding claims, characterized in that on the inside of the lower shaft part (56) stops (70, 72) are provided, which extend in the longitudinal direction of the Shaft extend and with the buttons (44-50) of the cartridge as well as with between these buttons arranged slots (52, 54) cooperate; and that bsi the longitudinal and rotary movement given to the buttons by the means (72, 74) provided on the piston (61), that the stops (70, 72) at a first depression of the piston on at least one of the Buttons (44) and when the piston is then pressed down on the bottoms of the slots (52, 54) when the system arrives. 00 9819/0480 BADORlQtNAL Blank page