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Ventilating-Fastener.
Patent for an improved tuft fastening device that provides ventilation through cushion tufts to make cushions cooler to the touch, including illustrations.
Date:
May 8, 1917
Creator:
Davis, Don M. & Underwood, Thomas J.
System:
The Portal to Texas History
Pump
Patent for an improved pump for oil or water wells after completion. It is designed to remove sand and slush and keep it out of the valve cage and seat.
Date:
May 8, 1917
Creator:
Kutschbach, August E.
System:
The Portal to Texas History
Horizontal-Drilling Machine.
Patent for an easily adjustable and transportable machine that drills a horizontal hole in the ground to accompany a previous invention of the inventor, a method for the destruction of military fortifications. The machine's mechanisms are so housed to protect against exploding shells and includes illustrations.
Date:
May 8, 1917
Creator:
Hughes, Howard R.
System:
The Portal to Texas History
Perforator.
Patent for an improved perforator that attaches to a multigraph and perforates sheets of paper that pass through the multigraph so the sheets can be separated into parts, with illustrations.
Date:
May 8, 1917
Creator:
Hahl, Harold D. & Lambert, James J.
System:
The Portal to Texas History