The first typewriter patent was given to Christopher Lathom Sholes in 1868.
However, it was an expensive acquisition for a business and required training and expertise to be a viable asset to an office or company.
So, necessity being the mother of invention, sometime in the 1880,s The American Typewriter Company produced the Typewriter No. 1, a cheaper and simple to use option.
This example is near complete, missing only the strip with the letters/numbers. Apparently that strip was made of a cloth like material and has been prone to deterioration and few of these seem to be found with this part.
The curved strip at the top edge was printed with the letters, numbers and punctuation marks. The pointer would be moved from letter to letter. I believe the thumb knob at the far left was a space bar and thumb knob below the pointer was something like a Caps Lock/Num Lock, to change from letters, numbers and punctuation.