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Lock-Strike.
Patent for simple and durable lock plates for door frames. This patent is for the keeper plates for door locks and is an invention "for rendering the plate adjustable both vertically and horizontally without detaching the same from the door jamb" (lines 11-14). Includes one illustration page and description.
Date:
July 9, 1918
Creator:
Russell, Leo
System:
The Portal to Texas History
Compression Indicator
Patent for a device that determining the compression of engine cylinders. Is meant to provide a more efficient and quicker way to test compression in explosive engine cylinders.
Date:
November 26, 1918
Creator:
Lambeth, Acey L.
System:
The Portal to Texas History