Who Invented Plastic Wrap?

Who Invented Plastic Wrap?...

Plastic wrap is such a common and ordinary thing you can find in every house every day. If you have food left over after a meal it is sometimes quite common to put them in a plate and cover them with this film. The idea is to cover and seal off any food you want to put inside containers in order to keep them fresh. Its invention is credited to Ralph Wiley from Dow Chemical. You will usually get plastic wrap in rolls contained in boxes. Each box usually comes with a cutting edge to make cutting the plastic film a lot easier. Every plastic film sticks to containers like an adhesive sealing food tight. It takes on different names depending on the location. In the United Kingdom, it’s called a cling-film. Some people in the United States call it cling wrap while it is called glad wrap. Invention of the Plastic Wrap The very first sheet of plastic ever used for wrapping anything was called cellophane. It was invented by Jacques Brandenberger, a Swiss chemist, in 1911. It was used as packaging and was quite favored due to the fact that it was transparent. However, it was never used to wrap or seal food. Needless to say, that isn’t the same as the plastic wrap that we use nowadays. The plastic wrap that we are familiar with is used primarily to wrap or cover food. Saran is the very first sheet of plastic to be used to wrap food. Saran or Saran Wrap is a trade name of Dow Chemical. This actually refers to various polymers and monomers that has properties that act like a barrier. Compared to other plastics, this plastic wrap is able to contain aroma...
Who Invented Silk?

Who Invented Silk?

The Silkworm Legend Silk has its origins in China. According to them, the first person to discover it was the Yellow Emperor’s consort, Hsi Leng Shih in 3,000 BC. One day she sat under a mulberry tree in the royal garden to enjoy her tea. A cocoon fell from above into the hot liquid. When it did the strong silk thread unwound itself. The empress began raising silkworm and also invented the loom. In honor of her discovery, they gave her the title “Silk Goddess.” Archeological Evidence of Silk A recent archeological discovery appears to contradict this legend. It is a cup made from ivory and inscribed with silkworm designs. Along with the cup, they also found silk-making equipment. The items are believed to be about 6,000 to 7,000 years old. This has led experts to believe that silk must have been invented some 10,000 years ago! Excavations in China reveal further evidence of silkworm farming. In 1927 they found part of a cocoon along the Yellow River. It was estimated to be from between 2,500 to 2,300 years BC. Another find was a group of threads, ribbons and other pieces of silk dating as far as back 3,000 BC. These were unearthed in Zhejiang province. Use of Silk Silk was highly prized by the Chinese. At first, only royalty could wear it, notably the Emperor, his chief consort and his heir. Favored colors were white and yellow. Commoners were banned from using it. However people used silk in other ways. They would use it as parts for bow strings, musical instruments and fishing equipment. Silk was even used as currency. Eventually the old laws went lax and everyone could wear silk just like their king. Silk was quite...
Who Invented Chalk?

Who Invented Chalk?

Your first encounter with chalk might have been in the classroom where you often see your teachers use them to write on a chalkboard. The most familiar form of chalk a lot of people have come familiar with is made of slender sticks around a quarter of an inch thick and about three inches long. You might even have come to wonder who invented chalk. Who Invented Chalk It might come as a disappointment to find out that no one can tell who invented chalk. Chalk is readily found in nature and has been used as a tool for drawing and writing for quite a long time. Drawings that date even to the prehistoric times have been discovered by archaeologists. The earliest chalk writings/drawings have been found in caves. As time went by artists from various countries used chalk to make drawings and sketches. Their work was protected using shellac or any comparable substance. For the convenience of these artists, a major innovation was introduced – chalks shaped into sticks. Even though chalk artists can’t be credited as the ones who invented chalk, their need introduced an innovation that would last for centuries. Making Chalk In the same way we don’t know who invented chalk, we also don’t know who invented the method to make chalk into sticks. What we know is that the method starts by grinding natural chalk into a very fine powdery form. Water is then added along with clay and various color pigments depending on what color of chalk you want to make. The clay actually acts as a binder of some sort. The mixture will initially look something like putty that would be rolled and shaped into cylinders and then would be left to...
Who Invented Aluminum Foil?

Who Invented Aluminum Foil?...

A study of the history of aluminum foil indicates that on April 2, 1889, Charles Martin Hall got a patent for producing the metal. The first rolling plant came out in 1910, called Dr. Lauber, Neher, Cie and Emmishofen. This was in Kreuzlingen, Switzerland. Early History and Origin Before aluminum foil came out, tin foil was used for packing foods and other products. The metal was stiff and could leave an adverse effect on the food. It was in 1825 that aluminum was discovered, courtesy of Hans Christian Oersted. The Danish chemist was the first to show actual samples of the foil. In 1845, the German scientist Friedrich Wohler was able to produce bigger samples. Through his work the basic characteristics of the metal could be discerned. This was a crucial point in the history of aluminum foil. It was in 1854 that the French chemist Henry Deville developed the means for mass producing it. Despite his efforts, foil was still too expensive to be of any practical use. It was not until Hall’s invention that the material became affordable. The patent number of the US inventor was #400,666. In 1888, Hall set up the Pittsburgh Reduction Company. It would become known as the Aluminum Company of America. From $1,200 a kilo in 1852, the cost of aluminum foil had gone down to 18 cents per pound in 1914. Another important inventor was Karl Joseph Bayer. In 1888, the Austrian chemist invented a process so aluminum oxide could be extracted from bauxite. This was another vital chapter in the history of aluminum foil. Today his methodology is still being used. The Lauber Aluminum Rolling Plant The Lauber plant in Switzerland was maintained by J.G. Neher and his sons. Their...
Who Invented the Whoopee Cushion?

Who Invented the Whoopee Cushion?...

Having fun is very easy especially when there are many practical joke devices available such as the whoopee cushion. Also called Razzberry Cushion and poo-poo cushion, this item creates a funny noise that resembles human flatulence or raspberry. You can easily bring this device to any party or special gathering. For sure, you can easily learn the admiration and garner plenty of smiles from other guests with the help of this simple yet very funny device. Aside from these interesting details, it is also good to know something about its history including who invented the whoopee cushion. The Invention of the Whoopee Cushion Who invented the whoopee cushion? Based on historical records, the employees of JEM Rubber Co. invented the device in 1930. Based within the City of Toronto in Ontario, the company’s employees experimented on scrap rubber sheets. After that, the company owner went to the practical jokes inventor named Samuel Adams and asked him about the product. He owned the S. S. Adams Co., a manufacturer of different kinds of novelty products such as the Joy Buzzer. After the initial idea of a whoopee cushion was presented to Adams, he received it negatively. According to him, the idea was too vulgar and that it would not sell. Instead of giving up, JEM Rubber Co. presented the concept to another novelty product manufacturer Johnson Smith Co. It became an instant hit. Because of its success, S. S. Adams Co. copied that idea and created its very own version called the Razzberry Cushion. Additional Facts and Other Interesting Information The whoopee cushion is a practical joke device made up of two rubber sheets glued together along the edges. Part of it is a small opening located at one end...
Who Invented the Sewing Machine?

Who Invented the Sewing Machine?...

Introduction A sewing machine is a machine designed to sew fabric or clothing together. Sewing has been around ever since man decided to wear clothes. The first needles and threads were made from animal parts such as horns, bones and sinews. Iron needles were invented in the 1500s. When the sewing machine was invented, it made mass production of clothes and fabrics much easier and affordable. Early Inventors the Sewing Machine Hand sewing is a slow process. For the clothing and fabric industries, it was also expensive. It meant having to pay more to tailors for work that took very long. So several inventors tried to address the problem by proposing mechanical sewing. In 1790 an Englishman named Thomas Saint was granted a patent for a sewing machine design. But there is no proof that Saint, a cabinet maker, ever built his machine. Later when a prototype was built based on his descriptions, it didn’t work. So he can’t be considered as the one who invented the sewing machine. In 1810, Balthasar Kremps of Germany made an unpatented design for sewing caps, but it was ineffective. Earlier in 1804 two patents were issued to two unsuccessful sewing machine designs: One to James Henderson and Thomas Stone in France, and another to John Duncan of Scotland. Joseph Madersperger of Austria came up with various sewing machine designs in 1814. Even though he got his patent, none of his inventions woked. Four years later in 1818, two Americans, John A. Doge and John Knowles failed in their attempt as well. Invention of the Sewing Machine It wasn’t until 1830 that the first successful sewing machine was invented. Its creator was another Frenchman, Barthelemy Thimonnier. His design had a chain stitch made...
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