o- CER | = =| ES A 52 os = Z ° * a vided with a wire rope drum and with two winch heads, x bai) S — & ° > to = i A} ie and capable of exerting a pull of 5,000 pounds on one head. The posts in the forward well are also supplied | anh aes SS a ae <u with guys and fittings so that a boom capable of… … i Wn ences hs x, z Ses nected so that they may be operated independently, or both together. They are in duplicate so as to have one machine at least always ready to operate on the sys- tem, and to provide for a future increase if desired.
Shipbuilding -- Periodicals · Shipbuilding industry -- Periodicals
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
