UNGINES AND BOILERS New and Second-Hand1 GLASS OIL CUPS Corrugated Iron portionate prices. Fast cutting free from glazing they are the best Solid Emery Wheels. Give diem of holes in your order for wheels. Emery Grinders one maled by HARTFORD STEAM BOILER Inspection & Insurance COMPANY. J. B. Pom 5es. HARTFORD. CONN. Working Models DITCHING and EXCAVATION RANDOLPH BRO'S Broadway New York. BOLT CUTTERS. Wood & Light Machine Co. Worcester Mass. Als Shafting Pulleys &c. Patented 1868-1874. PI 0 YE'S Mill PurnishingWorks adapted to flour mills. Bend for catalogue. Steam Super -Heaters HENRY W
UNGINES AND BOILERS New and Second-Hand1 GLASS OIL CUPS Corrugated Iron portionate prices. Fast cutting free from glazing they are the best Solid Emery Wheels. Give diem of holes in your order for wheels. Emery Grinders one maled by HARTFORD STEAM BOILER Inspection & Insurance COMPANY. J. B. Pom 5es. HARTFORD. CONN. Working Models DITCHING and EXCAVATION RANDOLPH BRO'S Broadway New York. BOLT CUTTERS. Wood & Light Machine Co. Worcester Mass. Als Shafting Pulleys &c. Patented 1868-1874. PI 0 YE'S Mill PurnishingWorks adapted to flour mills. Bend for catalogue. Steam Super -Heaters HENRY W. BULKLEY 98 Liberty St. New York. For showing heat of BOLT CUTTERS. DIE BOLT CUTTERS. REGULATORS GAGE COCKS. MURRILL & KEIZEF. 44 Holliday St. Bait. Machinists' Tools. LIICIIJS W. POND. MANUFACTURER. Worcester Mass. and beg advertised Mechanical Goods desire an THE BEST INJECTOR For Locomotive and Stationary Boilers. FRIEDMANN'S PATENT. Over 15000 Now in Ilse Here and In E 105 Liberty St. New York Box 778 New York city. PATENTED BY US 816-822 Front St New York Near Gouverneur Street. MANUFACTURERS OF Agents for the New Haven ianufacturtng co.'s Machin st's Tools; for Judson's overnors and Stop-Valves; Sturtevant Blower.; and Differential Pulley-Blocks. WAREROOMS 10 BARCLAY ST. NEW YORK WORKS PATERSON. NEW JERSEY. VALUE OF PATENTS And How to Obtain Them. ROBABLY no investment of a small sum of money brings a greater return than the expense incurred in obtaining a patent even when the invention is but a small one. Large inventions are found to pay correspondingly well. The names of Blanchard Morse Bigelow Colt Erics son Howe McCormick Hoe and others who have amassed immense fortunes from their inventions are well known. And there are thousands of others who have real ized large sums from their patents. availed themselves of the services of Mums & Co. during the TWENTY-SIX years they have acted as solicitors and Publishers of the SCIENTIFIC AMERI CAN. They stand at the head in this c
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