Staple remover


Staple remover
Staple remover
Close-up view of a staple remover

A staple remover (also known as a staple decleater, deschnaffler, staple puller, staple muncher, destapler, butterfly, crocodile, staple taker outerera, staple extractor or crimper) is a device that allows for the quick removal of a staple from a material without causing damage. Although a simple metal wedge can be used, and is found on the ends of some staplers for that purpose, this method tends to tear fragile papers. For light gauge staples, many people instead use a device consisting of two opposing wedges on a pivot. For convenience, this device has a spring that returns it to the open position after use.

Some staplers, mainly small ones that are about 1.5 inches (3.8 cm) long contain an integrated staple remover. This is basically a piece of metal that is slid under each "curled" side of the staple and turned to loosen the staple.

Staple removers are known as decleaters in many former British colonies, such as Barbados.

Contents

Use

Demonstration.

Proper use of the opposing wedge staple remover is debated. The two major methods are described below.

Practical Method

1. Simultaneously clip the 2 folded pieces with the 2 corresponding tines of the remover, raising them from the paper. 2. Gently clip the front flat side while pulling the entire staple gingerly out of paper to discard.

Individuals can complete this task with minimal damage having been inflicted upon the previously conjoined pages.

Reverse Method

1. Forcefully clip the front flat side of the staple, causing the folded tabs on the reverse side to open and pull through the entry holes. This has the undesirable side effect of tearing the paper as the folded taps pull through.

Design

A staple remover for carpentry staples

The design is focused on functionality and robustness with no unnecessary decoration (unless one includes the ergonomics of the handle) and minimised number of parts to lower costs and production time. The device works with a pincer action to unfold and pull out a staple in one motion. The modern staple remover is believed to have been conceptualized by an Irish housewife, Meghan Rooney. However, Miss Rooney had initially intended the design to function as an implement to remove stitching and not as a staple remover.[1]

Components

Blades

The two pivoting blades interlock each other. They are made of chrome-plated steel, which is harder than the thin ductile wire of the staple and strong enough to withstand the force required to remove it. The chrome plating provides a mild rust-resistance suitable for use in an office environment away from any liquids. Though the blade is made from what was originally sheet metal, the right angles and clean edges mean that a punch and die method of production would not be suitable. Therefore, the piece of sheet metal is cut using the process of blanking in a mechanical press, then bent in a press brake. This is a highly automated method which allows for a production rate of up to 1,500 units per minute.

Torsion springs

The torsion spring in this staple remover is a standardised component that appears in many other products, such as clothes pegs. It has two loops. The spring is made of chrome-plated steel, which is used because there is a point of minimum stress where continued use (opening and closing the staple remover) will not cause failure through fatigue. They are mass produced by a spring winding machine which cold winds wire around an arbour before heat treating to make it harder. The spring is then chrome plated. The machinery to do this is large, expensive, but has a high production rate. That is why the springs are usually bought off-the-shelf from a tier 1 supplier rather than produced in house.

Plastic grips

The plastic grips are in fact unnecessary and the device could still be operated without them. They provide enhanced ergonomics so the user does not have to press their fingers against sheet metal. Injection moulding of thermoplastics are normally used through the use of an automated injection moulding machine, which shoots liquid plastic into a mould where it is left to set. Such processing is commonplace, not very labour intensive, cheap, and capable of producing high quantities. Plastic is used as it is the easiest, but also the cheapest and most readily available material that can be formed into such fluid shapes.

Pin axle

The pin axle provides a cylindrical bar from which the blades can rotate. It is made of stainless steel, which will not rust in areas that have been worn by contact with other metals. The process to create such a pin axle is quite intensive and hence it is bought off-the-shelf from a supplier. They are made by a specialised machine which cuts thick wire into a suitable length and then die punches the head of the pin. The supplier normally runs specialised machinery that is capable of producing large amounts of products at a high rate for a low cost.

History

The form of destapler described above was invented by William G. Pankonin of Chicago, Illinois. A patent application for the same was filed on 12 December 1932, granted on 3 March 1936 and published on 3 April 1936 as patent document US 2,033,050.

A modified version, also capable of removing broken staples, was patented by Joseph A. Foitle of Overland Park, Kansas, but does not see widespread use, despite overcoming several disadvantages of the former device by a simple, yet novel and inventive, modification. The patent for the latter invention was filed on 28 May 1969 and was granted on 28 December 1971, published as US 3,630,486 A. An excerpt from the patent application reads as follows:

"... A device for removing broken portions of wire staples ... comprising a pair of overlying planar arms pivoted together on an axis normal thereto, said arms having cooperating notches ... whereby relative pivotal motions ... may be engaged over the projecting portion of a broken staple..."

See also

References

External links

Media related to Staple removers at Wikimedia Commons


Wikimedia Foundation. 2010.

Look at other dictionaries:

  • staple remover — ˈstaple remover [staple remover] ; noun a small device used for removing ↑staples from paper, etc …   Useful english dictionary

  • staple remover — noun A device with two jaw like pincers which is used to remove staples …   Wiktionary

  • Staple (fastener) — A staple is a type of two pronged fastener, usually metal, used for joining or binding materials together. Large staples might be used with a hammer or staple gun for fencing, masonry, roofing and cardboard boxes. Smaller staples are used with a… …   Wikipedia

  • Staple knocker — A staple knocker is a tool resembling a screwdriver, used for removing staples and shredded material. It is called a knocker because a hammer can be used to hit the end of it and remove long lines of shorter staples. ee also*Staple remover …   Wikipedia

  • Surgical staple — 19 surgical staples wrapping around the head, plus approximately 10 surgical sutures on the neck …   Wikipedia

  • Stapler — A stapler is a mechanical device that joins together sheets of paper or other similar materials by driving a thin metal staple through the sheets and folding over the ends to secure the paper. Staplers are widely used in government and business… …   Wikipedia

  • Remove — or remover may refer to:* Removalist or household goods Mover * Hare Remover , 1945 Merrie Melodies cartoon * Needle remover * Pet eye remover, in photographic retouching * Polish remover * Staple removerSee also* Delete * Relocate * Removable… …   Wikipedia

  • stapler — noun A device which binds together sheets of paper by driving a thin metal staple through the sheets and simultaneously folding over the ends of the staple against the back surface of the paper. Compare staple gun. See Also: staple, staple gun,… …   Wiktionary

  • Crimp — Crimp(ing) may refer to: Crimp (climbing), a small hold with little surface area Crimp (gambling), a bent corner of a card to facilitate cheating Crimp (joining), a deformity in metal used to make a join Crimp (recruitment) or shanghaiing, to… …   Wikipedia

  • Frost & Shaft — is a Belgian TV show produced broadcast by RTBF public channel. It tells the story of a duo of private investigators involved in silly adventures in the Belgian city of Liège. Despite its detective setting, the show is mostly centered on… …   Wikipedia


Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.