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Activated-Sludge Treatment.
Patent for a method that dehydrates sewage for easier removal.
Date:
January 29, 1918
Creator:
Moor, William C.
System:
The Portal to Texas History
Jail Cells.
Patent for new and improved jail cells. This design calls for cell walls constructed of vertical sections secured by through-bolts, tubular bars for the concealment of the through-bolts, wooden corner-posts and sill and head timbers, and outer and main walls lined with sheet-iron (with narrow windows lined with chilled cast-iron) (paras. 15-19).
Date:
January 29, 1878
Creator:
Thomas, John S.
System:
The Portal to Texas History
Float Valve
Patent for a float value. This invention is designed to automatically close. Illustration included.
Date:
January 29, 1907
Creator:
Axtell, Fred W.
System:
The Portal to Texas History
Hanger For Draw Heads
Patent for a hanger for draw heads. This invention is designed to support draw-heads in use with street-railways cars. Illustration included.
Date:
January 29, 1907
Creator:
Savage, Harley G.
System:
The Portal to Texas History