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Well Drilling Machinery.

Description: Patent for new and improved well-drilling machinery. This design "is to make a well-drilling machine which will drop the drill at the proper time and from the proper height" (lines 11-14). It consists in "the bevel-wheel having cam on its periphery and arranged loosely on a vertical shaft, a bevel-pinion fast on power-shaft, a loose drum sliding on [the] shaft, the spring, and collar, in combination with the drill-rope" (lines 69-74).
Date: June 7, 1892
Creator: Lee, Joseph G.
Partner: UNT Libraries Government Documents Department