The great peculiarity of this vulcanizing process is this. If you take a compound of sulphur and rubber in a dry state, and grind and mix them together, and apply heat, the consequence is, that the substance softens, and softens, and softens, as the degree... Annual Report of the Commissioner of Patents - Page 10by United States. Patent Office - 1866Full view - About this book
| 1852 - 780 pages
...and grind and mix them together, and apply heat, the consequence is, that the substance eofcens, and softens, and softens, as the degree of heat increases, until it reaches a certain hight ill the thermometer, say 212° Fahrenheit, or along there, a little more or less. " Anybody who... | |
| United States. Patent Office - 1866 - 1014 pages
...Hayward, and discovered the art of vulcanizing it. This invention is thus described by Mr. Webster, hi his great speech at Trenton : " The great peculiarity...until it reaches a certain height in the thermometer, Bay 212° Farenheit and along there, a little more or less. Well, anybody," says Mr. Webster, " who... | |
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