DE1077634B - Extractor for staples with two coupled pliers legs that can be pivoted against each other - Google Patents

Description

GERMAN

The invention relates to an extractor for staples with two handle legs, Pliers legs that are coupled by two pin-and-slot connections and pivotable against each other, one of which is displaceable relative to the other in the closed position.

For deepening documents one below the other and for attaching sheet-like material to one Staples are often used as a base, the legs of which are bent from a web in a U-shape and hold the material to be stapled penetrate and their protruding leg ends either bent or driven into the base are.

In many applications of these staples, however, it is desirable to staple the material without damaging it, to be able to separate from each other or from the base again. There are different ones for this Types of extractors known, the simplest form of which consists of a wedge connected to the cutting edge is pushed under the clamp web and the latter due to the wedge shape at the same time as the feed lifts off the staple material under the clamp web while pulling out the legs. Other extractors work like a pair of scissors: with spreading legs lying flat on top of each other, they are under the clamp bar inserted and then spread.

In both versions, the stapled legs of the staple must resist the pressure of the extractor can be pulled out from under this, and the pulled-out staple will be pulled out by the extractor freely ejected.

According to another training, a hook that crosses the clip web is in a slot an abutment increasing in strength and width retractable, so that the abutment so when working of the device is advanced under the clamp bar, lifting the latter and inserting the legs into the Level of the web leads back. The pulled-off staple cannot be removed from the pull-out device here jump off, but requires stretching the bent bracket legs over the lateral inclined surfaces the abutment requires considerable effort.

Finally, extractor pliers for staples are known, the two legs of which are initially used for Must be closed under the clamp web. The legs are swiveled to do this approached each other around a coupling pin. A pin of one of the pliers leg is in an angled slot guided so that a sliding movement of the two pliers legs against each other during the Closing movement is not possible. You can only pull it out when you close the pliers legs the staple of one leg opposite that

with two coupled pliers legs that can be pivoted against each other

Applicant:
ELASTIC corporation

vorm. M. Vogel AG,
Frankfurt / M., Mainzer Landstr. 315-321

Georg Gustav Siemssen and Rudolf Post, Frankfurt / M., Have been named as inventors

other staple legs are moved so that the staple is pulled out of the material to be stapled.

The extractor for staples according to the invention is characterized by the fact that - to hold the displaceable pliers leg in the advanced position - on the other pliers leg, a push rod can be moved and with one special grip arm is connected by a coupling lever.

In an expedient embodiment, the push rod can be pivoted on the other pliers leg guided. Furthermore, on this pliers leg is expediently one in the retraction path of the displaceable Pliers leg lying clamping member displaceable against spring action and can when retracting of the movable pliers leg can be taken along by the latter.

With the extractor according to the invention it is now possible to loosen and pull out the staple can be carried out easily and without noticeable effort in one operation. During the pulling process the staple legs to be pulled out are not additionally burdened, and the staple pulled out is held for the intended filing. The extractor according to the invention can be used for Use staples with different web widths.

Further features and advantages of the extractor according to the invention emerge from the description of an embodiment. It shows

1 shows a longitudinal section through the device in the attachment position for pulling out a staple,

2 shows a longitudinal section in the working position,

3 shows the plan view of FIGS. 2 and

4 shows the front view of the pliers arm.

909 760/4

The extractor consists of a pliers handle 1 with one that ends in a fork nose 2 Handle leg 3, which forms the gripping member, a counter leg 4 with pivotable between the fork nose 2 Counter member 5 and a second handle leg 6, which is pivotable about a bolt 7 on the Pliers handle 1 is articulated. The counter leg 4 is with a transverse pin 8 in a slot 9 of the Pliers leg 1 slidably guided and coupled via a bolt 10 to a pull rod 11, the a bore of a support shield 12 of the pliers leg 1 penetrates and with the free end a control lever 13 is articulated, which is coupled to the handle arm 6. Between the support shield 12 and an adjustable stop 14 of the pull rod 11, a spring 15 is arranged, which the Opposite leg 4 in the sense of the open basic position to the handle leg 3 or the fork nose 2 is influenced.

In order to ensure that the fork nose 2 and the mating member 5 are kept open, this is still with a Angular slot 16 a, 16 & guided on a transverse pin 17 of the handle leg 3. The training and mutual The arrangement of the two pin-and-slot guides 8, 9 or 16 a, 16 & and 17 is made in such a way that that in the end position of the cross pin 8 determined by the pull rod 11 in the slot 9 of the cross pin 17 is held in the end bend 16 a. The counter member 5 is around the cross pin 8 in the Open position to the fork nose 2 swiveled out.

On the transverse pin 8 and a further transverse pin 18 of the handle arm 3 there is one of a U-bracket 19 formed clamping member carried out displaceably, the end of which is assigned to the fork lugs 2 as an abutment 20 is. The clamping member 19, 20 is by a spring 21 between the cross pin 18 and a contact washer 22 pressed against the fork lugs 2.

In the basic position of the parts, the extractor is placed vertically above the staple to be extracted (Fig. 1). When the handle leg 6 is pressed down against the handle leg 1, the counter member 4 is first pivoted about the transverse pin 8 in the slot 9 via the rods 13 and 11, the transverse pin 17 from the end bend 16 a of the other slot into the ascent to the leg 16 b occurs. With this pivoting movement of the mating member 4, however, the nose 5 thereof has entered between the noses 2, and the members 2 and 5, which are in the position of engagement with one another, have grasped the web of the staple to be pulled out.

With the further depression of the handle leg 6 against the handle leg 1, the Opposite member 4 opposite the leg 2, 3 according to the then parallel slots 9 and 16 & perpendicular withdrawn to noses 2. The nose 5 of the mating member 4 holds the web of the to be pulled out Staple on the clamping member 19, 20 firmly, which against the action of the spring loading it. Retraction path of the counter member 4 follows.

The staple to be pulled out is thus held between the parts 4 and 20 during the pulling process and can't jump off.

The fork nose of the pliers leg 1 runs out in a wedge shape; According to these wedge surfaces 23 can Extractors can be inserted under staples with webs of different widths. He is thus in its use is not limited to staples of a certain web width.

Claims (4)

PATENT CLAIMS! 1. Extractor for staples with two handles designed as handle legs, with two pin-and-slot connections coupled and mutually pivotable pliers legs, one of which is in the closed position opposite the other is displaceable, characterized in that - to hold the displaceable pliers leg (4, 5) in the advanced position - on the other pliers handle (1, 3, 2) a push rod (11) can be displaced and is connected to a special handle leg (6) by a coupling lever (13) (Figures 1 and 2). 2. Extractor according to claim 1, characterized in that the bumper (11) on the other Pliers handle (1, 3, 2) is pivotably guided (Fig. 1 and 2). 3. Extractor according to claim 1 and 2, characterized in that on the other pliers handle (1, 3, 2) also a in the retraction path of the displaceable pliers leg (4, 5) lying clamping member (19, 20) against the action of a spring ( 21) can be displaced and when the displaceable pliers legs (4, 5) are withdrawn it can be carried along by the latter (FIGS. 1 and 2). 4. Extractor according to claim 3, characterized in that the clamping member (19, 20) is a U-bracket with leg ends bent to form an abutment on one hinge pin (8) and on the one second bolt (18) of the other pliers legs (1, 3, 2) out and that the spring (21) between the bolt (18) and a further abutment (22) arranged on the U-bracket is provided (Figures 1 and 2). Considered publications:
U.S. Patent No. 2,549,260. 1 sheet of drawings © 90 »760/4 3.60