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Improvement in Double-Bitted Drills.
Patent for "an easy mode of straightening wells while drilling them through rock or earth, and also for enlarging the same into a cistern when it is desired to keep on hand a large supply of water." (Lines 8-13) Includes instructions and illustrations.
Date:
May 30, 1876
Creator:
Yarbrough, William H.
System:
The Portal to Texas History
Improvement in Excavators.
Patent for improvement in earth excavators combining a plow, rotating cylinder, and helical plate.
Date:
May 6, 1873
Creator:
Smith, Amroy B.
System:
The Portal to Texas History
Improvement in Brick-Presses.
Patent for a "new and useful improvement in brick-presses by which bricks may be quickly and cheaply pressed by hand power from clay taken direct from bank or mixer" ( Lines 1-3 )including instructions and illustration.
Date:
May 14, 1878
Creator:
Moore, Andrew A.
System:
The Portal to Texas History
Improvement in Railway-Gates.
Patent for "automatically operating slide-gates which are operated by pressure on treadles, and are suitable for use either as farm-gates or railroad-gates." (Lines 15-18) Includes instructions and illustrations.
Date:
May 28, 1878
Creator:
McCaffrey, James M. & Larkin, James
System:
The Portal to Texas History