Mechanical pencil patented
What happened
The first practical mechanical pencil designs appeared in the early nineteenth century; a notable British patent was granted in 1822 for a refillable lead-holder. Unlike a wooden pencil, these instruments could be refilled and adjusted, suiting the needs of draughtsmen and writers who required consistent fine lines. The pencil's convenience made it the everyday writing instrument of choice for poets revising manuscripts.
Literary impact
The patenting of the mechanical pencil in 1822 provided poets with a reliable drafting tool that eliminated the need for sharpening. This innovation allowed for greater ease in the writing process, encouraging creativity and experimentation in poetic forms, as seen in the works of Emily Dickinson.
Source: Wikipedia