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 |
| 4773776 | Ink ribbon cartridge in a printer A ribbon cartridge may contain a single color ribbon or a multicolor ribbon, and is of wide U construction with a first pair of aligned (coaxial) pivot pins extending away from sides at locations therefrom remote from the legs of the U; a second pair of p... | 09/27/1988 |
| 4022313 | Ribbon lifting mechanism In a printer wherein a ribbon is driven against a platen by a print element there is provided a ribbon lifting mechanism having a one revolution motor which drives, via a n-to-1 reduction gear, a ribbon guide to pivot to different positions whereby differ... | 05/10/1977 |
| 3944043 | Shift mechanism in syllabic typewriters In typewriters comprising groups of type-bars, each group having a distinct printing point, each group being supported by a particular sector and certain sectors being movable independently from the others: A shift mechanism which allows the typist to put all ... | 03/16/1976 |
