Difference between revisions of "Scissors" - New World Encyclopedia
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| − | {{ | + | {{Images OK}}{{Approved}}{{Copyedited}} |
| − | + | :''"Shears" redirects here.'' | |
[[Image:Scissors.jpg|right|frame|Different types of scissors - sewing (left), paper (middle), kitchen (right)]] | [[Image:Scissors.jpg|right|frame|Different types of scissors - sewing (left), paper (middle), kitchen (right)]] | ||
| − | ''' | + | A pair of '''scissors''' is a hand-operated cutting instrument consisting of a pair of [[metal]] [[blade]]s connected at a pivot, such that the blades meet and cut materials placed between them when the handles are brought together. The word '''shears''' is used to describe larger instruments of similar kind. As a general rule, a pair of scissors has blades shorter than 15 centimeters (cm) (or 6 inches (in)) and the handles have finger holes that are usually equal in size. By contrast, a pair of shears has blades longer than 15 cm and the handles are often unequal in size, such that the smaller handle has a hole to fit the thumb and the larger handle has a hole that can accommodate two or more fingers. |
| − | Scissors and shears | + | Scissors and shears are available in a wide variety of forms depending on their intended applications. They are used for cutting various materials such as [[paper]], thin [[plastic]], [[Paperboard|cardboard]], [[metal leaf|metal foil]], [[cloth]], [[rope]], [[wire]], [[hair]], and [[food]]. Children's scissors, used only on paper, have dull blades and rounded points (blunt tip) to ensure safety. Scissors used to cut hair or fabric must be much sharper. [[Sewing]] scissors often have one sharp point and one blunt point for intricate cutting of fabric, and [[nail]] scissors have curved blades for cutting [[fingernail]]s and [[toenail]]s. |
| + | {{toc}} | ||
| + | [[Pinking shears]] have notched or serrated blades that cut cloth to give it a wavy or zigzag edge, and [[thinning shears]] have teeth that thin hair rather than trim it. Large shears with very strong blades are used to cut metal or trim shrubs. | ||
| − | + | == Singular and plural forms == | |
| − | + | The word ''scissors'' (or ''shears'') is treated as a plural noun and therefore takes a plural verb, as in "these scissors are …" Alternatively, this tool may be referred to as "a pair of scissors," in which case it (a pair) is singular and therefore takes a singular verb, as in "this pair of scissors is …" (In theory, each of the two blades of the tool is a "scissor," although in practice such usage is seldom heard.) | |
| − | == | + | ==History== |
| − | + | [[Image:Scissors turkey.jpg|thumb|left|Scissors from second-century [[Asia Minor]].]] | |
| − | |||
| − | The | + | The earliest known scissors appeared in the [[Middle East]] about 3000 or 4000 years ago. They were of the type known as "spring scissors," consisting of two [[bronze]] blades connected at the handles by a thin, curved strip of bronze. This strip served to bring the blades together when squeezed and to pull them apart when released. Scissors dating back to the fourteenth century B.C.E.. have been found in [[ancient Egypt]].<ref>[http://inventors.about.com/library/inventors/blscissors.htm Scissors]. ''About.com: Inventors''. Retrieved November 19, 2008.</ref> |
| − | |||
| − | |||
| − | |||
| − | + | [[Image:Scissors china.jpg|thumb|right|280px|Scissors from the [[China|Chinese]] [[Tang dynasty]] (618-907 C.E.).]] | |
| − | + | [[Cross-bladed]] scissors were invented by the Romans around C.E. 100. | |
| − | |||
| − | |||
| − | [[Cross-bladed]] scissors were invented by the Romans around | ||
| − | Pivoted scissors of [[bronze]] or [[iron]], in which the blades were connected at a point between the tips and | + | Pivoted scissors of [[bronze]] or [[iron]], in which the blades were connected at a point between the tips and handles, were used in ancient [[Ancient Rome|Rome]], [[China]], [[Japan]], and [[Korea]]. Spring scissors continued to be used in Europe until the sixteenth century, and the idea is still used in almost all modern scissors. |
=== Early manufacture === | === Early manufacture === | ||
| − | During the [[Middle Ages]] and [[Renaissance]], spring scissors were made by heating a bar of iron or steel, then flattening and shaping its ends into blades on an anvil. The center of the bar was heated, bent to form the spring, then cooled and reheated to make it flexible. | + | During the [[Middle Ages]] and [[Renaissance]], spring scissors were made by heating a bar of iron or steel, then flattening and shaping its ends into blades on an anvil. The center of the bar was heated, bent to form the spring, then cooled (tempered) and reheated to make it flexible. |
| − | Pivoted scissors were not manufactured in large numbers until 1761, when [[Robert Hinchliffe]] produced the first pair of modern-day scissors made of hardened and polished cast steel. He lived in [[Cheney Square]], [[London]] and was reputed to be the first person | + | Pivoted scissors were not manufactured in large numbers until 1761, when [[Robert Hinchliffe]] produced the first pair of modern-day scissors made of hardened and polished cast steel. He lived in [[Cheney Square]], [[London]], and was reputed to be the first person to put out a signboard proclaiming himself "fine scissor manufacturer".<ref>[http://freepages.history.rootsweb.com/~exy1/fh_material/18C_sheffield/ch4.txt Reminiscences of Sheffield, R.R. Leader]. Retrieved November 19, 2008.</ref> |
During the nineteenth century, scissors were hand-forged with elaborately decorated handles. They were made by hammering steel on indented surfaces known as bosses to form the blades. The rings in the handles, known as bows, were made by punching a hole in the steel and enlarging it with the pointed end of an anvil. | During the nineteenth century, scissors were hand-forged with elaborately decorated handles. They were made by hammering steel on indented surfaces known as bosses to form the blades. The rings in the handles, known as bows, were made by punching a hole in the steel and enlarging it with the pointed end of an anvil. | ||
| − | [[Image:Skalm 2.JPG|thumb|left|100px|Fiskars scissors 1967]] | + | [[Image:Skalm 2.JPG|thumb|left|100px|Fiskars scissors, 1967.]] |
| − | In a part of [[Sweden]] (now in [[Finland]]) an ironworks was started 1649 in the hamlet "Fiskars" between [[Helsinki]] and [[Turku]]. In | + | |
| + | In a part of [[Sweden]] (now in [[Finland]]) an ironworks was started in 1649 in the hamlet "Fiskars" between [[Helsinki]] and [[Turku]]. In 1830, a new owner started the first cutlery works in Finland, making, among other items, scissors with the trade mark [[Fiskars]]. Fiskars Corporation introduced new methods in the manufacture of scissors in 1967.<ref>[http://www.fiskars.fi/pdf/Fiskars_history_eng.pdf Fiskars 1649: 350 Years of Finnish Industrial History]. ''fiskars.fi''. Retrieved November 19, 2008.</ref> | ||
| + | |||
| + | == Description and operation == | ||
| − | + | A pair of scissors consists of two pivoted blades. Most types of scissors are not particularly sharp; it is primarily the [[Shearing (physics)|shearing]] between the two blades which cuts. [[Children]]'s scissors are even less sharp, and the blades are often protected with [[plastic]]. | |
| − | |||
| − | |||
Mechanically, scissors are a first-class, double-[[lever]] with the pivot acting as the [[fulcrum]]. For cutting thick or heavy material, the [[mechanical advantage]] of a lever can be exploited by placing the material to be cut as close to the fulcrum as possible. For example, if the applied force (i.e., the hand) is twice as far away from the fulcrum as the cutting location (e.g., piece of paper), the force at the cutting location is twice that of the applied force at the handles. Scissors cut material by applying a local [[shear stress]] at the cutting location which exceeds the material's [[shear strength]]. | Mechanically, scissors are a first-class, double-[[lever]] with the pivot acting as the [[fulcrum]]. For cutting thick or heavy material, the [[mechanical advantage]] of a lever can be exploited by placing the material to be cut as close to the fulcrum as possible. For example, if the applied force (i.e., the hand) is twice as far away from the fulcrum as the cutting location (e.g., piece of paper), the force at the cutting location is twice that of the applied force at the handles. Scissors cut material by applying a local [[shear stress]] at the cutting location which exceeds the material's [[shear strength]]. | ||
| − | Specialized scissors, like [[bolt | + | Specialized scissors, like [[bolt cutter]]s, exploit leverage by having long handles requiring operation by two strong arms, but placing the material to be cut close to the fulcrum. |
==Kitchen scissors== | ==Kitchen scissors== | ||
| + | [[Image:kitchenscissors.jpg|thumb|right|A pair of kitchen scissors.]] | ||
| − | + | Kitchen scissors, also known as ''kitchen shears,'' are similar to common scissors. The main difference is the location of the fulcrum. Kitchen scissors have the fulcrum located farther from the handles to provide more leverage and thus more cutting power. High quality kitchen scissors can easily cut through the breastbone of a [[chicken]]. Some are constructed allowing the two blades disassemble for thorough washing. | |
| − | Kitchen scissors, also known as ''kitchen shears'' | ||
=='Handed' scissors== | =='Handed' scissors== | ||
| − | Most scissors are best suited to use with the right hand, but ''left-handed'' scissors are designed for use by the left. | + | Most scissors are best suited to use with the right hand, but ''left-handed'' scissors are designed for use by the left. Left-handed scissors have handles which are comfortable to hold in the left hand. Because scissors have overlapping blades, they are not symmetric. This asymmetry is true regardless of the orientation and the shape of the handles: the blade that is on top always forms the same diagonal regardless of orientation. Human hands are also asymmetric and when closing the thumb and fingers do not close vertically, but have a lateral component to the motion. Specifically, the thumb pushes out and fingers pull inwards. For right-handed scissors held in the right hand, the thumb blade is closer to the body so that the natural tendency of the right hand is to force the cutting blades together. Conversely, if right-handed scissors are held in the left hand, the natural tendency of the left hand would be to force the cutting blades laterally apart. Furthermore, with right-handed scissors held by the right-hand, the shearing edge is visible, but when used with the left hand the cutting edge of the scissors is behind the top blade, and one cannot see what is being cut. |
| + | |||
| + | [[Image:2scissors-clean.jpg|thumb|left|200px|left-handed (left) and right-handed (right) scissors.]] | ||
| − | Some scissors are marketed as [[ambidextrous]]. | + | Some scissors are marketed as [[ambidextrous]]. They have symmetric handles so there is no distinction between the thumb and finger handles, and they have very strong pivots so that the blades simply rotate and do not have any lateral give. However, most "ambidextrous" scissors are in fact still right-handed. Even if they cut successfully, the blade orientation blocks the view of the cutting line for a left-handed person. True ambidextrous scissors are possible if the blades are double-edged and one handle is swung all the way around (to almost 360 [[Degree (angle)|degrees]]) so that the back of the blades become the new cutting edges. Patents have been awarded for true ambidextrous scissors.<ref>[http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=3978584.PN.&OS=PN/3978584&RS=PN/3978584 Ambidextrous scissors]. ''USPTO.gov''. Retrieved November 19, 2008.</ref><ref>[http://www.freepatentsonline.com/3978584.html Ambidextrous scissors]. ''freepatentsonline''. Retrieved November 19, 2008.</ref> |
| − | Using scissors designed for the wrong hand is difficult for most people, even for left-handers who have become accustomed to using the more readily available right-handed scissors. | + | Using scissors designed for the wrong hand is difficult for most people, even for left-handers who have become accustomed to using the more readily available right-handed scissors. They have to unnaturally force the blades together to cut and look over the top blade to see what is being cut. This unnatural motion can also cause marks on the hand, sores, and eventually [[callus]]es. An alternative adaption is to use the scissors upside down, with the blade tips pointing toward the body, allowing the dominant hand to better manipulate the cutting action. |
==Shears== | ==Shears== | ||
| + | [[Image:LeverShears.jpg|thumb|right|Lever shears ([[goldsmith]] tool).]] | ||
| − | + | Although often used interchangeably with "scissors," the term ''shears'' is used by people in the industry for scissors longer than 15 cm (about 6 inches). In addition, some assert that a pair of scissors has symmetric handles, whereas a pair of shears has a smaller handle shaped for the thumb and a larger handle for two or more fingers.<ref>[http://www.canadacutlery.com/product/facts_on_scissors.pdf Facts About Scissors and Shears]. ''canadacutlery.com''. Retrieved November 19, 2008.</ref> Like scissors, shears combine slightly offset jaws to cut material through physical shear, and combine this with [[lever]]s to apply a considerable shear force. Shears are usually intended for cutting much heavier material, such as leather, than scissors do. | |
| − | Although often used interchangeably with "scissors," the term ''shears'' is | ||
{{clear}} | {{clear}} | ||
| − | == | + | ==Specialized scissors and shears== |
| − | There are several | + | There are several specialized scissors and shears used for different purposes. Some of these are: |
| − | *[[Pinking shears]] are scissors with a serrated | + | *[[Pinking shears]] are scissors with a serrated blades that produce saw-tooth type edges. They may be used for cutting cloth so that the fabric does not fray. |
| − | *[[Tin snips]] are scissors for cutting through [[sheet metal]] like tin plate, or [[ | + | *[[Tin snips]] are scissors for cutting through [[sheet metal]] like tin plate, or [[galvanized iron]]. |
| − | *[[Pruning shears]] (secateurs) and [[loppers]] are gardening scissors for cutting through branches of [[tree]]s and [[shrub]]s. | + | *[[Pruning shears]] ''(secateurs)'' and [[loppers]] are gardening scissors for cutting through branches of [[tree]]s and [[shrub]]s. |
| − | *[[Trauma shears]], or "tuff cuts" | + | *[[Trauma shears]], or "tuff cuts," are robust scissors used in emergency medical response and rescue. |
| − | * Trimming scissors are used for thinning thick hair to avoid a bushy look | + | * Trimming scissors are used for thinning thick hair to avoid a bushy look. |
* Grass and hedge shears are used for trimming [[grass]] and [[hedge (barrier)|hedge]]s. | * Grass and hedge shears are used for trimming [[grass]] and [[hedge (barrier)|hedge]]s. | ||
| − | * Jaws of Life | + | * "Jaws of Life" is for cutting heavy sheet metal in a rescue response. |
* [[Throatless shear]]s are used for cutting complex shapes in sheet metal | * [[Throatless shear]]s are used for cutting complex shapes in sheet metal | ||
| − | * [[Sheep_shearing#Shearing_devices|Wool shears]] are used for collecting [[wool]] from an animal's | + | * [[Sheep_shearing#Shearing_devices|Wool shears]] are used "to shear a sheep" for removing and collecting [[wool]] from an animal's skin, without harming it. |
| − | * [[Poultry shears]] are to cut [[poultry]]. | + | * [[Poultry shears]] are used to cut [[poultry]], including bones, in food preparation. |
| − | * [[Hair shears]] | + | * [[Hair shears]] are used for cutting hair as a [[Cosmetology|cosmetologist]] or [[hairdresser]], or for [[pet grooming]]. |
== See also == | == See also == | ||
| − | + | ||
| − | *[[ | + | * [[Paper]] |
| − | *[[ | + | * [[Plastic]] |
| − | *[[ | + | * [[Tool]] |
==Notes== | ==Notes== | ||
| − | + | <references/> | |
| + | |||
| + | ==References== | ||
| + | |||
| + | * Betzina, Sandra. 2004. ''More Fabric Savvy: A Quick Resource Guide to Selecting and Sewing Fabric.'' Newtown, CT: Taunton Press. ISBN 1561586625 | ||
| + | * Penso, Dorothy E. 2004. ''Scissors Skills.'' London: Whurr. ISBN 978-1861564238 | ||
| + | * Hopf, Claudia. 2007. ''Papercutting: Tips, Tools, and Techniques for Learning the Craft.'' Mechanicsburg, PA: Stackpole Books. ISBN 978-0811732697 | ||
==External links== | ==External links== | ||
| − | + | All links retrieved January 25, 2023. | |
| − | |||
| − | |||
| + | * [http://inventors.about.com/library/inventors/blscissors.htm Scissors]. About.com: Inventors. | ||
| + | * [http://sewing.about.com/od/beginner1/ig/Sewing-Tools/Pinking-Shears.htm Pinking Shears]. About.com: Sewing. | ||
| + | * [http://www.freepatentsonline.com/5014433.html Scissors for Household and Medical Uses]. freepatentsonline. | ||
| + | |||
| + | ---- | ||
{{Types of tools}} | {{Types of tools}} | ||
{{crochet}} | {{crochet}} | ||
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[[Category:Physical sciences]] | [[Category:Physical sciences]] | ||
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{{credit|251292653}} | {{credit|251292653}} | ||
Latest revision as of 17:27, 25 January 2023
- "Shears" redirects here.
A pair of scissors is a hand-operated cutting instrument consisting of a pair of metal blades connected at a pivot, such that the blades meet and cut materials placed between them when the handles are brought together. The word shears is used to describe larger instruments of similar kind. As a general rule, a pair of scissors has blades shorter than 15 centimeters (cm) (or 6 inches (in)) and the handles have finger holes that are usually equal in size. By contrast, a pair of shears has blades longer than 15 cm and the handles are often unequal in size, such that the smaller handle has a hole to fit the thumb and the larger handle has a hole that can accommodate two or more fingers.
Scissors and shears are available in a wide variety of forms depending on their intended applications. They are used for cutting various materials such as paper, thin plastic, cardboard, metal foil, cloth, rope, wire, hair, and food. Children's scissors, used only on paper, have dull blades and rounded points (blunt tip) to ensure safety. Scissors used to cut hair or fabric must be much sharper. Sewing scissors often have one sharp point and one blunt point for intricate cutting of fabric, and nail scissors have curved blades for cutting fingernails and toenails.
Pinking shears have notched or serrated blades that cut cloth to give it a wavy or zigzag edge, and thinning shears have teeth that thin hair rather than trim it. Large shears with very strong blades are used to cut metal or trim shrubs.
Singular and plural forms
The word scissors (or shears) is treated as a plural noun and therefore takes a plural verb, as in "these scissors are …" Alternatively, this tool may be referred to as "a pair of scissors," in which case it (a pair) is singular and therefore takes a singular verb, as in "this pair of scissors is …" (In theory, each of the two blades of the tool is a "scissor," although in practice such usage is seldom heard.)
History
The earliest known scissors appeared in the Middle East about 3000 or 4000 years ago. They were of the type known as "spring scissors," consisting of two bronze blades connected at the handles by a thin, curved strip of bronze. This strip served to bring the blades together when squeezed and to pull them apart when released. Scissors dating back to the fourteenth century B.C.E. have been found in ancient Egypt.[1]
Cross-bladed scissors were invented by the Romans around C.E. 100.
Pivoted scissors of bronze or iron, in which the blades were connected at a point between the tips and handles, were used in ancient Rome, China, Japan, and Korea. Spring scissors continued to be used in Europe until the sixteenth century, and the idea is still used in almost all modern scissors.
Early manufacture
During the Middle Ages and Renaissance, spring scissors were made by heating a bar of iron or steel, then flattening and shaping its ends into blades on an anvil. The center of the bar was heated, bent to form the spring, then cooled (tempered) and reheated to make it flexible.
Pivoted scissors were not manufactured in large numbers until 1761, when Robert Hinchliffe produced the first pair of modern-day scissors made of hardened and polished cast steel. He lived in Cheney Square, London, and was reputed to be the first person to put out a signboard proclaiming himself "fine scissor manufacturer".[2]
During the nineteenth century, scissors were hand-forged with elaborately decorated handles. They were made by hammering steel on indented surfaces known as bosses to form the blades. The rings in the handles, known as bows, were made by punching a hole in the steel and enlarging it with the pointed end of an anvil.
In a part of Sweden (now in Finland) an ironworks was started in 1649 in the hamlet "Fiskars" between Helsinki and Turku. In 1830, a new owner started the first cutlery works in Finland, making, among other items, scissors with the trade mark Fiskars. Fiskars Corporation introduced new methods in the manufacture of scissors in 1967.[3]
Description and operation
A pair of scissors consists of two pivoted blades. Most types of scissors are not particularly sharp; it is primarily the shearing between the two blades which cuts. Children's scissors are even less sharp, and the blades are often protected with plastic.
Mechanically, scissors are a first-class, double-lever with the pivot acting as the fulcrum. For cutting thick or heavy material, the mechanical advantage of a lever can be exploited by placing the material to be cut as close to the fulcrum as possible. For example, if the applied force (i.e., the hand) is twice as far away from the fulcrum as the cutting location (e.g., piece of paper), the force at the cutting location is twice that of the applied force at the handles. Scissors cut material by applying a local shear stress at the cutting location which exceeds the material's shear strength.
Specialized scissors, like bolt cutters, exploit leverage by having long handles requiring operation by two strong arms, but placing the material to be cut close to the fulcrum.
Kitchen scissors
Kitchen scissors, also known as kitchen shears, are similar to common scissors. The main difference is the location of the fulcrum. Kitchen scissors have the fulcrum located farther from the handles to provide more leverage and thus more cutting power. High quality kitchen scissors can easily cut through the breastbone of a chicken. Some are constructed allowing the two blades disassemble for thorough washing.
'Handed' scissors
Most scissors are best suited to use with the right hand, but left-handed scissors are designed for use by the left. Left-handed scissors have handles which are comfortable to hold in the left hand. Because scissors have overlapping blades, they are not symmetric. This asymmetry is true regardless of the orientation and the shape of the handles: the blade that is on top always forms the same diagonal regardless of orientation. Human hands are also asymmetric and when closing the thumb and fingers do not close vertically, but have a lateral component to the motion. Specifically, the thumb pushes out and fingers pull inwards. For right-handed scissors held in the right hand, the thumb blade is closer to the body so that the natural tendency of the right hand is to force the cutting blades together. Conversely, if right-handed scissors are held in the left hand, the natural tendency of the left hand would be to force the cutting blades laterally apart. Furthermore, with right-handed scissors held by the right-hand, the shearing edge is visible, but when used with the left hand the cutting edge of the scissors is behind the top blade, and one cannot see what is being cut.
Some scissors are marketed as ambidextrous. They have symmetric handles so there is no distinction between the thumb and finger handles, and they have very strong pivots so that the blades simply rotate and do not have any lateral give. However, most "ambidextrous" scissors are in fact still right-handed. Even if they cut successfully, the blade orientation blocks the view of the cutting line for a left-handed person. True ambidextrous scissors are possible if the blades are double-edged and one handle is swung all the way around (to almost 360 degrees) so that the back of the blades become the new cutting edges. Patents have been awarded for true ambidextrous scissors.[4][5]
Using scissors designed for the wrong hand is difficult for most people, even for left-handers who have become accustomed to using the more readily available right-handed scissors. They have to unnaturally force the blades together to cut and look over the top blade to see what is being cut. This unnatural motion can also cause marks on the hand, sores, and eventually calluses. An alternative adaption is to use the scissors upside down, with the blade tips pointing toward the body, allowing the dominant hand to better manipulate the cutting action.
Shears
Although often used interchangeably with "scissors," the term shears is used by people in the industry for scissors longer than 15 cm (about 6 inches). In addition, some assert that a pair of scissors has symmetric handles, whereas a pair of shears has a smaller handle shaped for the thumb and a larger handle for two or more fingers.[6] Like scissors, shears combine slightly offset jaws to cut material through physical shear, and combine this with levers to apply a considerable shear force. Shears are usually intended for cutting much heavier material, such as leather, than scissors do.
Specialized scissors and shears
There are several specialized scissors and shears used for different purposes. Some of these are:
- Pinking shears are scissors with a serrated blades that produce saw-tooth type edges. They may be used for cutting cloth so that the fabric does not fray.
- Tin snips are scissors for cutting through sheet metal like tin plate, or galvanized iron.
- Pruning shears (secateurs) and loppers are gardening scissors for cutting through branches of trees and shrubs.
- Trauma shears, or "tuff cuts," are robust scissors used in emergency medical response and rescue.
- Trimming scissors are used for thinning thick hair to avoid a bushy look.
- Grass and hedge shears are used for trimming grass and hedges.
- "Jaws of Life" is for cutting heavy sheet metal in a rescue response.
- Throatless shears are used for cutting complex shapes in sheet metal
- Wool shears are used "to shear a sheep" for removing and collecting wool from an animal's skin, without harming it.
- Poultry shears are used to cut poultry, including bones, in food preparation.
- Hair shears are used for cutting hair as a cosmetologist or hairdresser, or for pet grooming.
See also
Notes
- ↑ Scissors. About.com: Inventors. Retrieved November 19, 2008.
- ↑ Reminiscences of Sheffield, R.R. Leader. Retrieved November 19, 2008.
- ↑ Fiskars 1649: 350 Years of Finnish Industrial History. fiskars.fi. Retrieved November 19, 2008.
- ↑ Ambidextrous scissors. USPTO.gov. Retrieved November 19, 2008.
- ↑ Ambidextrous scissors. freepatentsonline. Retrieved November 19, 2008.
- ↑ Facts About Scissors and Shears. canadacutlery.com. Retrieved November 19, 2008.
ReferencesISBN links support NWE through referral fees
- Betzina, Sandra. 2004. More Fabric Savvy: A Quick Resource Guide to Selecting and Sewing Fabric. Newtown, CT: Taunton Press. ISBN 1561586625
- Penso, Dorothy E. 2004. Scissors Skills. London: Whurr. ISBN 978-1861564238
- Hopf, Claudia. 2007. Papercutting: Tips, Tools, and Techniques for Learning the Craft. Mechanicsburg, PA: Stackpole Books. ISBN 978-0811732697
External links
All links retrieved January 25, 2023.
- Scissors. About.com: Inventors.
- Pinking Shears. About.com: Sewing.
- Scissors for Household and Medical Uses. freepatentsonline.
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