A WEEKLY JOURNAL OF PRACTICAL INFORMATION ART SCIENCE MECHANICS CHEMISTRY AND MANUFACTURES. Vol. X 18. r$ per Annum. New Mechanical Inventions. Fig. 1IMPROVED GRINDSTONE TROUGH. Fig. 2BEVEL AND SPUR GEAR CUTTING MACHINE. Fig. 3AUTOMATIC BALANCE WHEEL TURNING MACHINE., scientific american, 1878-05-04
A WEEKLY JOURNAL OF PRACTICAL INFORMATION ART SCIENCE MECHANICS CHEMISTRY AND MANUFACTURES. Vol. X 18. r$ per Annum. New Mechanical Inventions. Fig. 1IMPROVED GRINDSTONE TROUGH. Fig. 2BEVEL AND SPUR GEAR CUTTING MACHINE. Fig. 3AUTOMATIC BALANCE WHEEL TURNING MACHINE., scientific american, 1878-05-04
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