[Illustration]
12, 20, and 30 inch Mill Stones.
Sent on trial to responsible parties, and warranted the full equal of
any heavy mill built in the world. Send for our price list, as this
may not appear again.
A. W. STRAUB & CO., 1361 Ridge Avenue, Phila, Pa.
NO MORE SLIPPING BELTS. MY NEW Patent Pulley Cover will do double the
work before the belt will slip. Put on without disturbing shafting.
Agent wanted in every city. Circulars free.
JOHN W. SUTTON, 95 Liberty St., New York.
THE NEW GERMAN PATENT LAW. Being the Full Text of the New Law for
Patents, passed July 1st, 1877, covering all the States of the German
Empire. Contained in SCIENTIFIC AMERICAN SUPPLEMENT No. 80. Price 10
cents. To be had at this office and of all newsdealers.