On July 23rd in 1829, William Austin Burt patented what is considered to be the first known typewriter. He called it a typographer, and a person typed using a dial to select letters one at a time. Before him, in 1714 a patent was given to Henry Mill for a “writing machine”, but no records survived about what exactly his writing machine could do.
It wasn’t until the 1870s that the typewriter became a commercial success, with Christopher Sholes and Carlos Glidden’s invention (pictured above), based on the workings of a sewing machine.
When investigating the integrity of your catalogue, pay careful attention to the context, because inveti* can be a typo for several different words: forms of investigate, invention, and the Spanish investigación.
(Photo from The Science Museum)