Pressure-Controlling Valve Mechanism For Hydraulic Presses. (open access)

Pressure-Controlling Valve Mechanism For Hydraulic Presses.

Patent for certain new and useful improvements in pressure controlling valve mechanism for hydraulic presses, including instructions and illustrations.
Date: November 8, 1898
Creator: Price, William W.
System: The Portal to Texas History
Stock-Guard. (open access)

Stock-Guard.

Patent for certain new and useful improvements in stock guards, including instructions and illustrations.
Date: November 8, 1898
Creator: Lee, Jacob M.
System: The Portal to Texas History