Trying to find Monks' patent.
The Engineer 1881 Jul-Dec: Patent Journal Index lists "Monks, W.H., Small-arms, 288" about 1/5 way down here. It is Monks, with a 's'
https://www.gracesguide.co.uk/The_Engineer_1881_Jul-Dec:_Index:_Patent_Journal
But no issue date.

I was able to register, but there is a fee to open the PDF for each issue to search for the patent frown
https://www.gracesguide.co.uk/The_Engineer_1881_Jul-Dec

He may have made bicycles also
https://books.google.com/books?id=ewszAQAAIAAJ&pg=PA1386&lpg[size:17pt][/size]