The maker is the C.S. Bell Company of Hillsboro, Ohio. If you do a search by putting “Hillsboro, Ohio” in the white box in the top right corner of this page, you’ll find all the postings on the “Bell Talk” forum that discuss this company and its bells. Also, if you go to prindlestation.com, you will find a history of the C.S. Bell Company and a lot of other info about the bells it made.
This is another case where a good photo is essential. It isn’t that we doubt what you wrote, but what you see is guided in part by your experience; what others might see, informed by different experiences, could be different. In this case, it’s quite conceivable that rust and/or other damage could have modified the raised letters “C.S.” to look somewhat like “J.B.” Knowing the exact shape of the lettering used by the C.S.Bell Company is essential to determining whether this happened on your bell. If your bell did somehow get made with J.B. as its original lettering, then a photo is just as important to provide the “experts” with a view of something unexpected.