DE1226075B - Stapler - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. CL:

Number:
File number:
Registration date:
Display day:

B 42 b

German class: Ua-Il

G 33782 VII b / 11a
December 8, 1961
October 6, 1966

The invention relates to a stapler having a base plate on which a main part at one end is pivotally mounted and as a housing for a mechanism for actuating the staple driver serves, with a groove-shaped recess being provided on the underside of the main part is, in which a staple holder is arranged with an upside down U-profile and above the one Spring operated staple feeder is attached to forward staples to the driver lead, with the clip holder normally held in the recess by a latch device will.

Such staplers are known in various embodiments. In a known device • is z. B. the clip holder by a pawl in the form of a leaf spring with a projection in a recess engages in a rigid part of the clamp-receiving component of the device, secured against unintentional sliding out. It is similar with another known device; at this one is the pawl as a locking piece which is pivotably articulated on the rear end of the clip holder formed with two lateral hook-like projections, which in corresponding recesses engage on the housing part of the device. Another previously known device has one with the rear end of the guide rod of the staple feeder connected to the end plate a pawl part arranged at its upper end, the corresponding one with lateral projections behind Abutment engages in the housing part of the device. With this device, too, the clamp holder is against unintentional release secured, but the release of the lock is relatively cumbersome, as Incidentally, also with the other two devices, and the locking mechanism is proportionate complicated trained. When using such devices it has now been shown that it when a staple jams in the device as a result of incorrect stapling, the most important thing is to begin with, that the bracket holder can be easily loosened or even better by the .in such a faulty Stapling process on the staple strip and the impact force acting on the staple holder in cooperation with the spring pushing the staple strip under the staple driver is ejected.

The invention is based on the object of a ratchet device for locking the clip holder to create, which is designed in such a way that the staple feed organs are indeed in single-issue stapler

Applicant:

Goodman & Vandervieren Limited,

Berkhamstead, Hertfordshire (UK)

Representative:

Dipl.-Ing. H. Marsch, patent attorney,

Düsseldorf, Lindemannstr. 31

Named as inventor:

Aime Albert Vandervieren, Totnes, South Devon; Peter Thomas Roger Harrington,

Kinsbury, London (Great Britain)

free operation of the stapler always remain securely locked, but that they are locked in the event of a staple jammed in the device below the staple driver due to the resulting impact on the front end of the staple strip and thus the staple holder can be ejected by itself. This object is achieved in a stapler of the type mentioned according to the invention in that the latch device has arms which are resilient at the rear end of the clip holder are resiliently arranged that from the arms upward with this resilient part with a Extends opening in which a retaining tongue is received by an automatic snap action, and that the part extends at such an angle to the plane of the retaining tongue that through each impact that on the front end of the clip holder acts and is transferred to the part via the arms, a automatic release of the ratchet device is achieved. If the latch is then released, it throws Spring the staple feed direction out the staple holder a little backwards out of the stapler, like this that the staple bent by the faulty stapling process does not get jammed in the first place can and easily falls out of the device. The automatic release of the clamp holder brings this also has the advantage that after a faulty staple there is no further staple under it The staple driver can be pushed, which usually removes the faulty staples jam even more in the device and among each other. By simply pushing in the clamp

609 669/4

Claims (1)

3 4 merhalter, who moreover by himself in his part 20. with: eiiiei..opening 21 and one above ": von When the locking position snaps into place, the device will move this opening backwards and then backwards then made ready for use again. So there are angled actuating tab 22 at the bottom. At the on the one hand damage to the device in the simple rear end of the main part 5 is a rearward Wise avoided, and also any 5 running, at their end widened like a head Incorrect staples are not provided with an unnecessary additional holding tongue 23 of such dimensions. Union time to see the device operational again that the part 20 with its in its lower ready to make, connected. Area also widened opening 21 over the An exemplary embodiment of the object from which the head part of the retaining tongue can be carried away Finding is shown in the drawing, with only io and then under the action of the spring arms 19 with The opening 21, which is of interest in connection with the invention, is narrowed in its upper region Sizing details of the stapler after it snaps into place behind the head part of the retaining tongue 23, Finding without reproducing a full The spring arms loaded by a leaf spring 19 ' permanent device are shown. In the drawing 19 are designed so that they have such a shows 15 pull downwards exerting on the latch that the F i g. 1 held the front part of a staple feed part 20 with the tongue 23 in the blocking position device with staple feed plate and staple is. ■ driver in longitudinal section, To insert a strip of staples into the magazine F i g. 2 to insert the rear end of the staple feed channel 6, the main part 5 is opposite device according to FIG. 1 with the pawl arrangement so the base part of the stapler by 180 ° to the rear according to the invention, also in section and partially. · pivoted, and then the ratchet device wise in .Seitenansicht, 'released to the Kl.ammerführungteil 15 from the F i g. 3 shows a view, partly in section, in Rieh main part 5 to be pulled out so far to the rear that direction of the arrows BB in FIG. 2, the magazine is open and the strip of staples F i g. 4 shows a section along the line CC in FIG. 3 25 can be inserted ¹ . When that is done, will by the device according to the invention and. the part 15 back into the magazine channel 6 Fi-g. 5 shows a top view of the end of the clip. During this movement, the supply device detects, partially in section according to guide plate 16, the rear end of the staple line DD in FIG. 3 and is stopped by this strip, so that According to Fig. 1 of the drawing, on the underside 3 <> during the further movement, the staple guide of the actual stapling mechanism containing ■ - ^te ü I ^{5 is} opposite the feed plate 16 to the pivotable main part 5 in its remaining front end of the device, namely in In the direction of the details of the stapler, not shown in more detail, the ^{staple driver plate} 14 is moved. The U-shaped magazine channel 6 zur'Auf- spring 17 is stretched, so that the supply of the staple strips is arranged. The plate 16 exerts a resilient pressure on the staple clip Hpf | fr1a.iTiTnerstTP.ifRn in this magazine strip auto staples the upper end wall of the channel matically secures the retaining tongue 23, which touches the part 15 in its position, while the staple legs are pushed in downwards. The latch devices run along the side walls of the channel. In the direction of upward movement of the actuator in the magazine channel 6, a channel or feed tab 22 can also be released so that the wider lower part, U-shaped, clamp guide part 15 can be slid across the opening 21 with the head part of the retaining tongue 23. The upper wall and which is aligned so that the part 15 can move backwards under the two downwardly directed side walls effect of the spring 17, this part 15 is located in such a distance Wall parts of the U-shaped magazine is designed so that they normally open the zinc channel, that the also U-shaped brackets part 15 fit over part 15 in the inserted position in the device and hold in the channel-shaped one suddenly triggers the Device exerted impact, space between the parts acting together, for example caused by clamping. A staple 50 of a staple under the staple driver heat feed plate 16 is slidably arranged on the upper side of the part at the end of a stapling process, the ratchet device 15, and at its end has a downwardly directed projection 16 at its end, which is resiliently flexible over the arms 19 a mounted part 20 opposite the retaining tongue 23 and on, which moves the head part upwards through a slot in the upper wall, so that the part of the part 15 is passed through. The part 15 has 55 15 automatically released and by the spring 17 at its front end an extension 15 ″ on which it is displaced at the rear. As a result, any visual tension spring 17 is attacked which, with its desired stress on the staples or other end, is hung in the extension 16a of the staple from parts of the stapling mechanism of the device feed plate 16 in such a way that this plate 16 avoided, and in most cases Normally a jamming of staples is removed by the spring 17 in the magazine channel 6 60 and is pulled forward in such a way that the staples are against and the device is quickly made ready for use again, the front end of the main part 5 and under by only the part 15 again to press into the clip-clip driver 14 .. pushed in the feed channel and thereby the Kliaken- At its rear end is the part 15, as is re-engaged in the device, FIGS. 2 to 5 shown with a latch device 65 device 18, which is attached to part 15 by spring, claim: arms 19 resiliently 'is resiliently supported. The stapler with a base plate on which a Ratchet assembly has an upwardly extending body at one end; is pivotally attached and serves as a housing for a mechanism for actuating the staple driver, wherein on the Underside of the main part a groove-shaped recess is provided in which a Clamp holder is arranged with an upside down U-profile and over which a spring-operated one Staple feeder is attached to feed staples forward to the driver guide, the clip holder normally in the recess of a latch device is held, characterized in that that the ratchet device (18) has arms (19), the .at the rear end of the clip holder (15) are resiliently attached that from the arms (19) upwards a with the- sen resilient part (20) with an opening (21) extends in the automatic snap action a retaining tongue (23) is received, and that the part (20) is at such an angle to the level of the retaining tongue (23) runs that through every shock that hits the front end of the Clamp holder (15) acts and is transferred to the part (20) via the arms (19), a automatic release of the ratchet device (18) is achieved. Considered publications:
British Patent No. 517,352;
U.S. Patents Nos. 2,420,830, 2,599,131,
2 625 681, 2667 638. 1 sheet of drawings 609 669/4 9.66 © Bundesdruckerei Berlin