4 to 40 H. P. Steam Engines. See adv. p. 281.
Tyson Vase Engine, small motor. 1-33 H. P., efficient and non-explosive:
price $50 See illus. adv., page 380.
For Yale Mills and Engines, see page 381.
Lightning Screw Plates and Labor-saving Tools. p. 333.
* * * * *
Scientific American, Volume XLIII., No. 25, December 18, 1880 A Weekly Journal of Practical Information, Art, Science, Mechanics, Chemistry, and Manufactures. · 第 64 / 165 题