Apparatus for Forming Gun Barrels.
Description:
Patent for an apparatus for forming gun barrels that twists a sheet of metal into a tube for the gun barrel at a slight angle, while slightly flattening the tube into an oval shape. This method is supposed to create ribs within the gun barrel.
Date:
September 10, 1917
Creator:
Cole, William F.
Item Type:
Refine your search to only
Patent