LATHES, PLANERS SHAPERS

Drills, Bolt and Gear Cutters, Milling Machines. Special

Machinery. E. GOULD & EBERHARDT, Newark, N. J.

[Illustration:

COE BRASS MFG. CO.

BRASS AND COPPER IN SHEETS.

WIRE AND BLANKS.

WOLCOTTVILLE, CONN.

MATERIALS FOR METALLIC.

AMMUNITION A SPECIALTY.]

BUCKET PLUNGER STEAM PUMPS,

FOR EVERY DUTY.

BUCK VALLEY MACHINE CO.,

EASTHAMPTON, MASS.

GRISCOM & CO'S

VALVE REFITTING MACHINE.

[Illustration]

POTTSVILLE,

PA.

Scientific American, Vol. XLIII.—No. 1. [New Series.], July 3, 1880 A Weekly Journal of Practical Information, Art, Science, Mechanics, Chemistry, and Manufactures · 第 120 / 157 题