Did You Know...
...that Charles Goodyear performed some of his experiments on rubber while in debtor's prison? He was there so often he referred to it as his "hotel". Chronically in debt because of poor business sense and ill health, Goodyear depended on the generosity of friends and family. Even after he unlocked the secret to vulcanizing rubber, he was unable to improve his financial situation. When he died, his estate was $200,000 in debt.
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| Number | Title | Issue Date |
| 4986793 | Seed corn sheller A seed corn sheller has a fixed disk for receiving corn through a central aperture thereof, spaced away from a rotating disk. The disks are faced with a contoured material which is soft but abrading. Corn cobs are fed between the disks and move to the per... | 01/22/1991 |
