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Improvement in Plows.

Description: Patent for "means whereby the beam of a plow may be elevated or depressed at the front end according to the depth to which it is intended that the plow shall run, and held securely at several points of adjustment." (Lines 11-16) Includes instructions and illustrations.
Date: November 17, 1874
Creator: Ihringer, August
Item Type: Refine your search to only Patent

Improvement in Truss-Bridges.

Description: Patent for an improved method of truss-bridge construction, "whether made with a single or double roadway and with or without a sidewalk upon one or both sides, so as to enable them to be made with less material and less expense than when made in the ordinary manner, and which shall at the same time have an equal or greater strength." (Lines 14-20) Includes instructions and illustrations.
Date: November 17, 1874
Creator: Miner, John L.
Item Type: Refine your search to only Patent
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