UNT Libraries Government Documents Department - 5 Matching Results

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Air Compressor for Deep Well Pumps.
Patent for a new and improved air-compressor. This design "relates to improvements in air-compressing mechanism for the purpose of pumping for forcing from deep wells and performing similar work; and it consists in the construction and arrangement of a larger and smaller air-cylinder, and the combination therewith of mechanism to force the air from the larger into the smaller cylinder to increase the air-pressure in the latter" (lines 22-30).
Pattern and Match Plate
Patent for a pattern and match plate for use in making car wheel chill segments more quickly and with less skilled labor.
Saw-Filing Machine.
Patent for a new and useful saw filing machine, including instructions and illustrations.
Tool-Joint
Patent for tool joints to be used in detachable connection between lengths of pipe. Specifically used with drill pipe for drilling deep wells for oil, gas, or water.
Wrench
Patent for wrenches that provides a means for engaging faces of the jaws to be renewed or changed. This improvement also allows for secure placement without loss of motion.
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