Resource Type

Nut-Lock (open access)

Nut-Lock

Patent for a nut lock. Illustrations included.
Date: October 22, 1912
Creator: Martin, George W.
System: The Portal to Texas History
Nut-Lock (open access)

Nut-Lock

Patent for a nut lock. Illustrations included.
Date: October 22, 1912
Creator: Martin, George W.
System: The Portal to Texas History
Pump. (open access)

Pump.

Patent for "improvements in pumps which move a long column of water with each stroke but discharge a relatively small quantity" (lines 10-13) including instructions and illustrations.
Date: May 16, 1911
Creator: Kangas, Frank Oskar
System: The Portal to Texas History