INDEX OF INVENTIONS For which Letters Patent of the United States were Issued for the Week Ending AND EACH BEARING THAT DATE. New Microscope for Nature Study Metals. Wools Fibre. etc. Elevator shafts safety guard for H. Harberg 0 n RUN MATE They do the BUSINESS and are right in WORK MANSHIP and FINISH. ARMSTRONG'S No. 0 THREADING MACHINE ?8u USE GRINDSTONES P The CLEVELAND STONE CO. 2d Floor Wilshire. Cleveland 0. IC1oNFSICi5F' Color Photography Keep Your Horse Healthy LOG-N'S PATENT STALL DRAIN YOLNEY W. MASON & CO. Friction Pulleys Clutches & Elevators PROVIDENCE R. I. W OOD or METAL
INDEX OF INVENTIONS For which Letters Patent of the United States were Issued for the Week Ending AND EACH BEARING THAT DATE. New Microscope for Nature Study Metals. Wools Fibre. etc. Elevator shafts safety guard for H. Harberg 0 n RUN MATE They do the BUSINESS and are right in WORK MANSHIP and FINISH. ARMSTRONG'S No. 0 THREADING MACHINE ?8u USE GRINDSTONES P The CLEVELAND STONE CO. 2d Floor Wilshire. Cleveland 0. IC1oNFSICi5F' Color Photography Keep Your Horse Healthy LOG-N'S PATENT STALL DRAIN YOLNEY W. MASON & CO. Friction Pulleys Clutches & Elevators PROVIDENCE R. I. W OOD or METAL TV Workers SENECA FALLS MFG. CO. 695 Water St. Seneca Falls ' E Nati r Foot BARNES' NEW FRICTION DISK DRILL The Coburn Patent Trolley Track Store Ladders. A PAIR OF STAIRS ALL ALONG THE LINE OF SHELVES. The Coburn Trolley Track Mfg. Co. HOLYOKE. MASS. INDUCTION 12-inch Pipe cut off and Threaded with ease by one man and a FOES The New YANKEE DRILL GRINDER THE EUREKA CLIP FANEUIL WATCH TOOL CO. Brighton. Boston Mass. A ROOF THAT IS WEATHERPROOF. Warren Chemical & Mfg. Co. 85 Fulton St. New York. WESTCOTT'S' Westcott Chuck Co. Oneida N. Y. Ti. S. A. AT LAST HOUSES LIGHTED BY BATTERIES CHEAPEST AND BEST LIGHT. OHIO ELECTRIC WORKS Cleveland Ohio. 251e PRINT YOUR OWN $5 PRESS MACHINE WORKS DEF-LANCE WHEEL BENDING WAGON CARRIAGE AND HOOP MACHINERY'. (Continued on page Powerful Responsive Variable Speed Countershaft REEVES PULLEY CO. COLUMBUS. IND. U. S. A. DIRECT SEPARATOR CO. 65201 ew Standard ' Dry Battery 42 Vesey Street New York City. 1324 Chestnut Street Philadelphia OUR BUSINESS ISTO MAKE MACHINERY FOR GRINDING PULVERIZING ALL HARD SUB' STANCES. WE HANDLE ; KINDS OF MATERIALS FROM COT TON-SEED TO ROOTS AND HERBS BY AN UNEXCELLED PRO s5. IF YOU WANT US AND YOU WILL GET THE BEST . AND STILL SAVE. SPROUT WALDRON & CO. MILLS FOR ALL MATERIALS, scientific american, 1900-07-07
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