A delightful “article” in the March 1, 1819 edition of the Repository of Arts, Literature and Fashion details the new patent for moveable axles for four-wheeled carriages by Ackermann.
Indeed, though intended to be short, the pamphlet excerpt continues on for 10 pages, clearly too much to paste here…but an interesting piece of what I can only guess to be a form of early info-mercial. I particularly like the appeal to the “higher and wealthier classes of the community” who make up the Repository readership.
Purely delightful if you have a little time to peruse:
https://books.google.com/books?id=veIRAAAAYAAJ&pg=PA124-IA4&source=gbs_selected_pages&cad=3#v=onepage&q&f=false
Having seen some of these historical carriages up close, I can imagine that any sort of journey of length would be very uncomfortable. The moveable axles must have been seen as a godsend for those who had to face the long and very tiring journey to and from the country to London.