Devices for drilling out or removing old or broken stay-bolts from the fire-boxes of locomotives, without the displacement of any of the intervening parts of the engine
Publisher: J.T. Connelly
Published: 1890
Place of publication: Milton, Pa
Language: eng
Notes: Caption title.

Signed: J.T. Connelly, patentee and sole mfgr., Milton, Penn'a., U.S.A.