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Impeller-Pump.
Patent for an impeller pump with separate sections and parts that can be connected together. The line of pipe of can be withdrawn without removing the head, and there are measures to keep the liner in operative position. The patent includes instructions and illustrations.
Date:
March 10, 1914
Creator:
Johnston, Horace G.
System:
The Portal to Texas History
Knee-Pad.
Patent for a knee pad to be used by berry or cotton pickers, or other workers that are often in a kneeling position. The knee pad consists of a frame made of "one piece of spring wire of rather coarse gage, a roller revolubly attached to the front end of the frame, and cloth or canvas stretched across the frame" (lines 23-27). The cloth is easy to remove and replace.
Date:
March 4, 1919
Creator:
Holsey, Walter R.
System:
The Portal to Texas History
Switching Device
Patent for a switch throwing device that can be operated from a train car. Illustrations included.
Date:
March 21, 1911
Creator:
Gordon, Holland F.
System:
The Portal to Texas History
Attachment for Cotton-Choppers.
Patent for "Improvements in Attachments for Cotton-Choppers" (lines 5-7) to vary the plane of rotation of the hoe.
Date:
March 28, 1916
Creator:
Fultz, Deck B.
System:
The Portal to Texas History