I picked this up the other day, partly because I can use it and partly because it is so interesting. The only markings are on the moving part behind the jaw and simply say "Browne & Sharpe MFG. CO Providence R.I. USA". Jaws are about 5" wide.
There is a catalog from 1916 which shows milling vises that have all the same detail on the flange and around the fixed jaw, but there is not a cam action one listed or shown. Does anybody have more info about these? When they came around, or what niche this design might have generally benefited?
![IMG_2401[1].jpg](https://www.practicalmachinist.com/forum/data/attachments/190/190662-9b0affc21ccbbd519e066ba8503b4e65.jpg "IMG_2401[1].jpg")
![IMG_2402[1].jpg](https://www.practicalmachinist.com/forum/data/attachments/190/190663-62c4673bbfebb2ad8f1ef3fa7451e020.jpg "IMG_2402[1].jpg")
There is a catalog from 1916 which shows milling vises that have all the same detail on the flange and around the fixed jaw, but there is not a cam action one listed or shown. Does anybody have more info about these? When they came around, or what niche this design might have generally benefited?
