DE2940383A1 - LETTER HOLE LOWER PART - Google Patents

Abstract

1. A lower part, of a paper punch with a confetti tray arranged at the lower face of the baseplate, characterized in that stops (211, 211') are arranged on the side walls (21, 21') of the confetti tray (2) and project upwardly beyond their free edges.

Description

DR.-ING. EUGEN MAIER DR.-ING. ECKHARD WOLF

PATENT LAWYERS

DRESDNER BANK AG LiFON: (0711) 343781/2 STUTTGART NO. 1930 534

; MENTOR 7 STUTTGART 1, PISCHEKSTR. 19 postal check stuck. 25300-709

A 12 359 i - kt - 4 - 25.9.1979

Louis L eit ζ company
Siemensstrasse 64
7000 Stuttgart 30

Lower part of the letter punch

The invention relates to a letter punch lower part with the Features of the preamble of claim 1.

For letter holes where the depth of the insertion slot not through a step of the embossed base plate or the punch guides connected to the base plate forming structure is limited, the depth of the insertion slot limiting stops are for example formed by tongues cut out and bent up from the base plate.

For the punching of documents with differently large spacing of the punchings from the marginal edge, you already have additional, organs arranged on the base plate are provided,

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for example by rockers that can be swiveled about horizontal axes, or cams that can be rotated about vertical axes be formed by a pivoting stop rail. This is very complex, the production of a letter punch significantly more expensive constructions.

There are also letter punches known where to different limitation of the insertion depth of the written material to be punched on one delimiting the chip space Plate integrally connected to this plate stops are provided which are designed so that their front edges facing the punches when the plate covering the cuttings space is rotated by 180 °, have a different distance from the punches.

In order to simplify the construction of such letter punches and to make their production cheaper and to improve the accuracy to increase the perforation of the written material, it is proposed according to the invention to design the lower part of the letter punch so that that it is the characterizing features of claim 1 and advantageously a further development Features of the subclaims 2 to 7 forming this construction.

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In the drawing are two embodiments of the invention Letter punch lower part shown in a schematic manner. Show it

1 shows a perspective view of the lower part; a letter punch with a substantially rectangular Base plate;

Fig. 2 is a perspective view of the in Essentially rectangular base plate, clamped on from underneath;

3 shows a perspective illustration of the base plate having a curved back edge a letter punch;

FIG. 4 shows a perspective illustration of a chip pan pushed onto the base plate according to FIG. 3.

In the embodiment shown in Figures 1 and 2, the base plate 1 is essentially vertical downwardly bent edges 11, the two die recesses 12 and the part connected to the base plate 1 which forms the side cheeks of the lower part of the letter punch provided with punch guides. The schnitzel tub 2 has four side walls 21, 21 ·, 22, 22 ·, of which the Side walls 21, 21 protruding beyond their marginal edges

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Have tongues 211, 211 '. These tongues are so arranged and have such a width that their distances a and b from the side walls 22 and 22 'are different Size.

In the case of schnitzel tubs, the side walls of which are overlapped by the downwardly bent edges 11 of the base plate 1, are provided in the base plate 1 inside or outside of the two side cheeks slots through which the Tongues 211, 211 'reach through. From these tongues beads are advantageously embossed, which the base plate Also hold the schnitzel pan from behind. The slots give the tongues an additional side Halt and are so dimensioned in their length that they are bent downwards from the front and the rear Edge 11 of the base plate 1 have the same distance b.

Corresponding measures apply if the chip pan extends only over part of the base plate 1, the in this case has a transverse web against which a side wall of the chip pan 2 rests.

In such an embodiment, the chip pan only needs to be rotated 180 to remove the punch from an edge strip width of, for example, 11 mm for a

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Letter folder perforation to an edge strip width of, for example 8.5 mm to be converted for a ring binder perforation.

The fact that the tongues forming the stops have a maximum distance from one another corresponding to the width of the letter punch enables the document to be punched to be positioned precisely against the stops and thus ensures precise perforation.

In the exemplary embodiment shown in FIGS. 3 and 4, the base plate 3 has a shape that deviates from a rectangle. As a result of the curved back edge, it is not possible to turn over the cossette tub 4 offset by 100 °, which is why, in addition to the two tongues 411, 411 'arranged on the side walls 41, 41' to limit the greater insertion depth at the bottom of the cossette tub, two perpendicularly from These protruding stops 42 are provided for limiting the smaller insertion depth, which reach through recesses 33 in the base plate. If the letter punch is to be switched to the greater insertion depth, the cuttings pan 4 is brought up to the edges 31 of the base plate so that these elastically flexible stops 42 rest against the base plate underside in a curved state when the cuttings pan is pushed on. The die recesses 32 of the base plate 3 are relatively far to the front because the chip pan

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is designed so that it extends the lower limit of the insertion slot to the front.

In contrast to the delimitation tongues 411, 411 'shown in FIG. 4, these can also be parallel to the front edge of the perforation be arranged.

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Claims (7)

DR.-ING. EUGEN MAIER DR.-ING. ECKHARD WOLF PATENTANWÄLTE DRESDNER BANK AQ TELEPHONE: (C711) 24 2761/2 STUTTGART NO. Λ93Ο534 TELEGRAMS: MENTOR 7 STUTTGART 1, PlSCHEKSTR. 19 POSTSCHECK STGT. 35200-708 A 12 359 i - kt 9/25/1979 Company Louis L e i t ζ Siemensstrasse 64 7000 Stuttgart 30 Letter punch base, patent claims 1.1 lower part of a letter punch with a cossette pan arranged on the underside of the base plate, characterized in that ^{stops (211,21I 1} ) protruding beyond the free edge of the cuttings pan (2) ^{are arranged on the side walls (21,2I 1).} 2. Letter punch lower part according to claim 1, characterized in that the chip pan (2) engages around the downwardly bent edges (11) of the base plate (1). 130016/0423 A 12 i - kt - 2 - 9/28/1979 3. letter punch lower part according to claim l, characterized characterized in that the base plate (1), the chip pan (2) with its bent downwards It overlaps the edges (11) and has recesses for the stop tongues (211, 211 ') to pass through. 4. Letter punch lower part according to claims 1, 2 or 3 with a cossette pan, which has a bottom formed by a substantially rectangular plate, characterized in that the stops (211, 211 ') in a known manner for Achieving unequal edge distances of the perforations asymmetrically with respect to the one parallel to the front edge of the perforation extending center line of the substantially rectangular plate are formed or arranged. 5. Letter punch lower part according to claims 1, 2 or 3 with a cossette pan having a substantially rectangular bottom, characterized that the stops of the documents to be punched with larger margins through the side walls of the structure (13) connected to the base plate (1) and the stops for the one with a narrower edge strip documents to be punched are formed by tongues (211, 211 ') on the side walls (21, 21') of the crockery pan (2). 130016/0423 A 12 359 i - kt - 3 - 25.9.1979 6. Letter punch lower part according to one of claims 1 to 5, characterized in that beads are formed on the stop tongues (211,21I ¹ ), which cause a latching of the chip pan on the base plate . 7. Letter punch lower part according to claims 1, 2 or 3 with different limitation of the insertion depth of the documents to be punched, characterized in that the stops for limiting the greater insertion depth by tongues (411, 411 ') of the side walls (41, 41') the Schnitzelwannt ^ 4) and the stops to limit the smaller insertion depth are formed by vertically from the bottom of the Schnitzelwanne (4) protruding, resilient tongues (42), which either reach through slots (33) in the base plate (3) or in a curved State against the underside of the base plate. 1300 16/0423