1765 3 July (advt.) A large parcel of Lancashire and Sheffield files, turn benches, brass turn saws, spring tools.
1859 R. Hunt (ed. 2) 103 Several of the tools [for glass-making] are exhibited,..the spring tool, the shears, &c.
2009 (Nexis) 26 Oct. The main hand tool is called jacks or jack tool. It's a spring tool with a long blade and a handle.