Elevators, Freight and Passenger, Shafting, Pulley and Hangers. L. S. Graves & Son, Rochester, N. Y.
Holly System of Water Supply and Fire Protection for Cities and Villages, is fully described in SCIENTIFIC AMERICAN SUPPLEMENT, No. 140.
Howard Patent Safety Elevators. Howard Iron Works Buffalo, N. Y.
Mellen, Williams & Co., 57 Kilby St., Boston, Mass. Wiegand Sectional Steam Boiler. Ætna Rocking Grate Bar.
North's Lathe Dog. 347 N. 4th St., Philadelphia, Pa.
Self-feeding upright Drilling Machine of superior construction. Drills holes from ⅛ to ¾ in. diameter Pratt & Whitney Co., Manufs., Hartford, Conn.
Wm. Sellers & Co., Phila., have introduced a new Injector, worked by a single motion of a lever.
For Shafts, Pulleys, or Hangers, call and see stock kept at 79 Liberty St. Wm. Sellers & Co.
The Turbine Wheel made by Risdon & Co., Mt. Holly N. J., gave the best results at Centennial test.
Wheels and Pinions, heavy and light, remarkably strong and durable. Especially suited for sugar mills and similar work. Pittsburgh Steel Casting Company, Pittsburgh, Pa.