Scissor

Do you about a scissor? Yes probably you know how to use a scissor but do you know how was it originated. Scissors are cutting instruments consisting of a pair of metal blades connected in such a way that the blades meet and cut materials placed between them when the handles are brought together. The blades of the scissors are generally lass than 15 cm. The have two wholes in which our thumb fits which leads to comfortable cutting of paper, cloth, etc.

                    

                   This was about the modern scissors but have you thought how were they originated? How did they came into being? The earliest known scissors appeared in Mesopotamia 3,000 to 4,000 years ago. Some believe that their scissors had only one piece of blade made out of metal. Scissors were also invented around 1500 BC in ancient Egypt.They consist of bronze blades that are joined by a fulcrum at the end like squeezer.  

                     In AD 100 the Romans had made the scissors. It was scissors made up of bronze or iron that were pivoted at a point between the tips and the handles. These were the direct ancestors of our modern scissors. These scissors were also traded as far as China, Japanand Korea. 

          

                       After the Roman period special type of scissors came into being with decorated handles and blades in the Mediterranean countries. As the art of calligraphy spread scissors with curved or concave blade were introduced That time the scissors became a part of everyone's life the  poor, the wealthy the king etc.

                    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. Pivoted scissors were not manufactured in large numbers until 1761, when Robert Hinchliffe of Sheffield, England, began using cast steel to make them. Cast steel, recently invented at the time by Benjamin Huntsman, also of Sheffield, was made by melting steel in clay crucibles and pouring it into molds. This resulted in a more uniform steel with fewer impurities.

                    

                    In the early nineteenth century beautiful scissors were made by hand with 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.                                                                                                                                                                                     By the beginning of the twentieth century, scissors were simplified in design to accommodate mechanized production. No the scissors were made by large machines known as drop hammers which used to give shape to different parts of the scissors. Powered by steam, these large, heavy devices used dies to shape the scissors from bars of steel. Modern versions of drop hammers are still used to manufacture scissors today.

                    Although scissors have remained in a standard form for hundreds of years, recent innovations may change the look of this ordinary household tool. Scissors using round, rolling blades have been designed. Ceramics made from zirconium oxide have been used to manufacture scissors with blades which are extremely strong, rustproof, and which never need sharpening.