Thomas Edison

1915 The great scarcity of carbolic acid in America now brought innumerable requests to him to sell some of this product. His first such plant worked well, producing about 7,000 pounds a day. This, however, soon proved to be insufficient to supply the demand. He now projected and installed another plant with a capacity of about 7,000 pounds additional per day. As he devised improved processes for use in the latter plant there were a vast number of difficult problems to overcome. However, with his usual energy and dogged perseverance - involving many weeks of strenuous work - he finally prevailed.
1916 Worked several months making important improvements in the manufacture of disc phonograph records and new methods and devices for recording. Worked on improved methods and processes producing his chemical products. Worked out processes for making a paramidaphenol base, hydrochloride benzidine base, and sulphate and constructed new plants for their manufacture. As President of the Naval Consulting Board, he did a great deal of work connected with national defense.
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