Puncher PDF

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Författare: Connie Furnari.

This article needs additional citations for verification. This article is about an office tool or handtool for sheet materials. For the industrial drilling of holes through many sheets of paper, see Paper drilling. A typical hole punch, whether a single or multiple hole punch, has a long lever which is used to push a bladed cylinder, the punch, straight through one or more sheets of paper and then through a close fitting hole in the die.

Two paper guides are needed to line up the paper: one opposite where the paper is inserted, to set the margin distance, and one on an adjacent side. Another mechanism uses hollowed drills which are lowered by a screwing action into the paper. The paper is cut and forced up into the shaft of the drill to be later discarded as tightly packed columns of waste paper. This method allows a small machine to cut industrial volumes of paper with little effort.

The most common standard dimension and location of filing holes punched in paper is International Standard ISO 838. 5 mm are punched into the paper. 1 mm to the nearest edge of the paper. 25 mm will accommodate ISO 838 filing holes. A four-hole extension is also commonly used. The two middle holes are punched in accordance with ISO 838, and so paper punched with the four holes can be filed in binders that are consistent with ISO 838. The two additional holes are located 80 mm above and below these.

The use of two additional holes provides more stability. This extension is sometimes referred to as the “888” system, because of the three 8-cm gaps between the holes. The 4 holes are preferred due to the extra-long length of 14-inch side of the paper where the 4 holes would be placed. Binders with 4 rings gives the paper better support in the binder.

The holes are positioned symmetrically, with the centers 4. 16 value is most commonly used, as it allows for looser tolerances in both ring binder and paper punching. Unlike ISO 838, this 3-hole system appears to have no well-established official specification, and is a de facto standard established by custom and tradition. It can only be applied to paper formats that are at least 9. Another standard also occasionally used in the US is a “filebinder” system. Its two holes are positioned symmetrically, with the centers 2. In Sweden, a four-hole national standard is almost exclusively used.

The centers of the holes are 21 mm, 70 mm and 21 mm apart. The guides help keep the paper in a straight line. The official name of this four-hole system is triohålning, since it was adapted to the “Trio binder” which was awarded Swedish patent in 1890. The binder’s inventor, Andreas Tengwall, supposedly named it after a consortium consisting of himself and two companions, i. Single hole punches are often used to punch a ticket, which indicates it has been used, or to make confetti when creating scrapbooks and other paper crafts.

For applications needing a variety of hole shapes, a ticket punch may be used. In the United States, single hole punches are often used to punch holes through playing cards, marking them as “used” or “canceled”. This helps cut down on cheating by eliminating any cards that may have been tainted by players. Paper drilling is also popular for this purpose. Single hole punches are widely used in the UK Civil Service where papers are punched with a single hole in the upper left, and secured using a treasury tag. A related office tool is the eyelet punch. This is a single-hole punch which also crimps a metal fastening loop around the hole.

It is used to permanently secure a few sheets of paper together which must not be separated or modified. A similar tool, generally known as a holing pincer, is used in animal husbandry. A common application is to attach an ear tag to a livestock animal. Multiple hole punches typically make between one and eight holes at one time, the placement of which matches the spacing of the rings in a binder.