Clutch Driven Reaction Wheel Steering Unit (open access)

Clutch Driven Reaction Wheel Steering Unit

Patent relating to a clutch driven reaction wheel steering unit.
Date: April 5, 2005
Creator: Smith, Monty J. & Maestas, Jeffrey E.
System: The UNT Digital Library
Improvement to Lifting-Jacks (open access)

Improvement to Lifting-Jacks

Patent for the improvement of the lifting jack which allows the user to "lower the lifting bar by a step-by-step movement as well as to elevate the lifting bar by such a movement (lines 12-14). Includes instructions and illustration."
Date: January 12, 1915
Creator: Parker, Charles W. & Wittliff, Theodore H.
System: The Portal to Texas History
Releasing Device For Burial-Vault Cores (open access)

Releasing Device For Burial-Vault Cores

Patent for a device for moving the interior cores of burial vaults to allow the vaults to shrink. Illustrations included.
Date: January 12, 1909
Creator: Gaskill, James L.
System: The Portal to Texas History