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Charles Goodyear (December 29, 1800 - July 1, 1860) was the first American to vulcanize rubber, a process which he discovered in 1839 and patented on June 15, 1844. Although Goodyear is often credited with its invention, modern evidence has proven that the Mesoamericans used stabilized rubber for balls and other objects as early as 1600 BC.
Goodyear discovered the vulcanization process accidentally after five years of research. Joseph Holt later described Goodyear as having showed "almost superhuman perseverance" in his search for a more stable rubber
Additional recommended knowledge
Charles Goodyear was born in New Haven, Connecticut on December 29, 1800. He was the son of Amasa Goodyear, and the oldest of six children. His father was quite proud of being a descendant of Stephen Goodyear, one of the founders of the colony of New Haven in 1638 .
Amasa Goodyear owned a little farm on the neck of land in New Haven which is now known as Oyster Point, and it was here that Charles spent the earliest years of his life. When Charles was quite young, his father secured an interest in a patent for the manufacture of ivory buttons, and looking for a convenient location for a small mill, settled at Naugatuck, Connecticut, where he made use of the valuable water power that is there. Aside from his manufacturing, the elder Goodyear ran a farm, and between farming and manufacturing Charles Goodyear kept busy.
In 1816, Charles left his home and went to Philadelphia to learn the hardware business. He worked industriously until he was twenty-one years old, and then, returning to Connecticut, entered into partnership in his father's business in Naugatuck, where they manufactured not only ivory and metal buttons, but a variety of agricultural implements, which were just beginning to be appreciated by farmers.
Marriage and early career
In August of 1824 he was united in marriage with Clarissa Beecher, a woman of supposedly remarkable strength of character and kindness of disposition; and one of great assistance to the impulsive inventor. Two years later the family moved to Philadelphia, and there Mr. Goodyear opened a hardware store. His specialties were the valuable agricultural implements that his firm had been manufacturing, and after the first distrust of domestically-made goods had worn away — for all agricultural implements were imported from England at that time — he found himself heading a successful business.
This continued to increase until it seemed that he was to be a wealthy man. Between 1829 and 1830 he broke down in health, being troubled with dyspepsia. At the same time came the failure of a number of business houses that seriously embarrassed his firm. They struggled on, however, for some time, but were finally obliged to fail. The ten years that followed were full of bitter struggles and trials. Under the law that existed he was imprisoned time after time for debts, even while he was trying to perfect inventions that could pay off his indebtedness.
Between the years 1831 and 1832, Goodyear heard about gum elastic and very carefully examined every article that appeared in the newspapers relative to this new material. The Roxbury Rubber Company, of Boston, had been for some time experimenting with the gum, and believed it had found means for manufacturing goods from it. It had a large plant and was sending its goods all over the country. It was some of Roxbury's goods that first attracted Goodyear's attention. Soon after this, Goodyear visited NY, and his attention went to life preservers, and it struck him that the tube used for inflation was not very effective nor well-made. Therefore, upon returning to Philly, he made some tubes and brought them back to New York and showed them to the manager of the Roxbury Rubber Company.
This gentleman was pleased with the ingenuity that Goodyear had shown in manufacturing the tubes. He confessed to Goodyear that the business was on the verge of ruin, and that his products had to be tested for a year before it could be determined if they were perfect or not. To their surprise, thousands of dollars worth of goods that they had determined to be of good quality were being returned, the gum having rotted, making them useless. Goodyear at once made up his mind to experiment on this gum and see if he could overcome the problems with these rubber products.
However, when he returned to Philly, a creditor had him arrested and thrown into prison. While there, he tried his first experiments with India rubber. The gum was inexpensive then, and by heating it and working it in his hands, he managed to incorporate in it a certain amount of magnesia which produced a beautiful white compound and appeared to take away the stickiness.
He thought he had discovered the secret, and through the kindness of friends was enabled to improve his invention in New Haven. The first thing that he made was shoes, and he used his own house for a grinding, calendering and vulcanizing, with the help of his wife and children. His compound at this time consisted of India rubber, lampblack, and magnesia, the whole dissolved in turpentine and spread upon the flannel cloth which served as the lining for the shoes. It was not long, however, before he discovered that the gum, even treated this way, became sticky. His creditors, completely discouraged, decided that he would not be allowed to go further in his research.
Goodyear, however, had no mind to stop here in his experiments. Selling his furniture and placing his family in a quiet boarding place, he went to New York and in an attic, helped by a friendly druggist, continued his experiments. His next step was to compound the rubber with magnesia and then boil it in quicklime and water. This appeared to solve the problem. At once it was noticed abroad that he had treated India rubber to lose its stickiness, and he received international acclamation. He seemed on the high road to success, until one day he noticed that a drop of weak acid, falling on the cloth, neutralized the alkali and immediately caused the rubber to become soft again. This proved to him that his process was not a successful one. He therefore continued experimenting, and after preparing his mixtures in his attic in New York, would walk three miles to a mill in Greenwich Village to try various experiments.
In the line of these, he discovered that rubber dipped in nitric acid formed a surface cure, and he made many products with this acid cure which were held in high regard, and he even received a letter of commendation from Andrew Jackson.
Exposure to harsh chemicals, such as nitric acid and lead oxide, adversely affected his health, and once nearly suffocated by gas generated in his laboratory. Goodyear survived, but the resulting fever came close to taking his life.
Together with a new business partner, he built up a factory and began to make clothing, life preservers, rubber shoes, and a great variety of rubber goods. They also had a large factory with special machinery, built at Staten Island, where he moved his family and again had a home of his own. Just about this time, when everything looked bright, the panic of 1837 came and swept away the entire fortune of his associate and left Goodyear penniless.
His next move was to go to Boston, where he became acquainted with J. Haskins, of the Roxbury Rubber Company. Goodyear found him to be a good friend, who lent him money and stood by him when no one would have anything to do with the visionary inventor. A man named Mr. Chaffee was also exceedingly kind and ever ready to lend a listening ear to his plans, and to also assist him in a pecuniary way. About this time it occurred to Mr. Chaffee that much of the trouble that they had experienced in working India rubber might come from the solvent that was used. He therefore invented a huge machine for doing the mixing by mechanical means. The goods that were made in this way were beautiful to look at, and it appeared, as it had before, that all difficulties were overcome.
Goodyear discovered a new method for making rubber shoes and received a patent which he sold to the Providence Company in Rhode Island. However, a method had not yet been found to process rubber so that it would withstand hot and cold temperatures and acids, and so the rubber goods were constantly growing sticky, decomposing and being returned to the manufacturers.
The vulcanization process
In 1838, Goodyear met Nathaniel Hayward in Woburn, Massachusetts, where Hayward was running a factory. Some time after this Goodyear himself moved to Woburn, all the time continuing his experiments. He was very much interested in Hayward's sulfur experiments for drying rubber. Hayward told Goodyear that he had used sulphur in rubber manufacturing.
The circumstances attending the discovery of his celebrated process is thus described by Mr. Goodyear himself in his book, "Gum Elastic and Its Varieties, with a detailed account of its application and uses and of the Discovery of Vulcanization." Perhaps showing humility, or following scientific convention, Goodyear used only third person references when speaking about himself. Or perhaps he did not want people to think he was bragging and wanted their truthful opinion.
Some say that Goodyear tried the experiment with a similar material over an open flame, and saw that the gum elastic was charred, but on the edge of the charred areas were portions that were not charred, but were instead perfectly cured. Other sources claim that Goodyear accidentally spilled the rubber mixture on a hot stove. The key discovery was that heating natural rubber and sulphur created vulcanized rubber. This process was eventually refined to become the vulcanizing process.
The inventor himself admitted that the discovery of the vulcanizing process was not the direct result of the scientific method, but claims that it was not accidental. Rather it was the result of application and observation.
Now that Goodyear was sure that he had the key to the intricate puzzle that he had worked over for so many years, he began at once to tell his friends about it and to try to secure capital, but they had listened so many times that his efforts were futile. For a number of years he struggled and experimented and worked along in a small way, his family suffering with himself the pangs of the extremest poverty. At last he went to New York and showed some of his samples to William Ryder, who, with his brother Emory, at once appreciated the value of the discovery and started in to manufacturing. Even here, Goodyear's bad luck seemed to follow him, for the Ryder Bros. had failed and it was impossible to continue the business.
He had, however, started a small factory at Springfield, Massachusetts, and his brother-in-law, Mr. De Forest, who was a wealthy woolen manufacturer, took Ryder's place. The work of making the invention practical was continued. In 1844 the process was sufficiently perfected that Goodyear felt it safe to take out a patent. The factory at Springfield was run by his brothers, Nelson and Henry. In 1843 Henry started one in Naugatuck, and in 1844 introduced mechanical mixing of the mixture in place of the use of solvents.
Goodyear died July 1, 1860, while traveling to see his dying daughter. After arriving in New York, he was informed that she had already died. He collapsed and was taken to the Fifth Avenue Hotel in New York City, where he died at the age of fifty-nine. He is buried in New Haven at Grove Street Cemetery.
In the year 1852 Goodyear went to Europe, a trip that he had long planned, and saw Hancock, then in the employ of Charles Macintosh & Co. Hancock admitted in evidence that the first piece of vulcanized rubber he ever saw came from America, but claimed to have reinvented vulcanization and secured patents in Great Britain, but it is a remarkable fact that Charles Goodyear's French patent was the first publication in Europe of this discovery.
In 1852 a French company (Aigle) was licensed by Mr. Goodyear to make shoes, and a great deal of interest was felt in the new business. In 1855 the French emperor gave to Charles Goodyear the Grand Medal of Honor and decorated him with the Cross of the Legion of Honor in recognition of his services as a public benefactor. Later, the French courts subsequently set aside his French patents on the ground of the importation of vulcanized goods from America by licenses under the United States patents.
In 1898, almost four decades after his death, the Goodyear Tire and Rubber Company was founded and named after Goodyear by Frank Seiberling.
On February 8, 1976, he was among 6 selected for induction into the National Inventors Hall of Fame.
In his hometown of Woburn, Massachusetts, there is an elementary school named after him.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Charles_Goodyear". A list of authors is available in Wikipedia.|