Did You Know...
...Daniel Webster invented a "bull plow" to pull out tree stumps. It didn't catch on because it was huge and required four oxen to pull it!
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| Number | Title | Issue Date |
| 4227456 | Printing pressure buffer mechanism or constant pressure printing mechanism for hand-operated label printing machine In a hand-operated label printing machine, including a hand lever and a printing head attached to the hand lever; a printing pressure buffer mechanism or a constant pressure printing mechanism which comprises: in a first embodiment, a spring-actuated enga... | 10/14/1980 |
| 4208964 | Constant pressure printing mechanism for hand labeler A contant pressure printing mechanism for use with a hand labeler which prints a label: an actuating lever, which is pivotally connected to the frame of the hand labeler, is divided into a hand lever and a printing lever, and both of these levers are also... | 06/24/1980 |
| 4206704 | Constant pressure printing mechanism for portable label printing machine or the like A constant pressure printing mechanism for use in a portable label printing machine, or the like: a pressing member is attached to a hand operated driving lever which carries the printing head and which is pivotally attached to the machine frame; a separa... | 06/10/1980 |
| 4201134 | Printing pressure damping mechanism for hand labeler A printing pressure damping mechanism for a hand labeler: A printing platen is pivotally mounted on the frame of the hand labeler. The platen has a printing portion at one side of its center of pivotal motion. A hand lever pivotally connected to the frame... | 05/06/1980 |
