Cavalry Rider Jumping Barbwire Fence

Copy negative of a US. army horse jumping a barbed wire fence in Ft. Riley, Kansas. Rider is wearing a uniform including a hat. There is a hill and tree in the background.
Date: unknown
Creator: unknown
Object Type: Photograph
System: The Portal to Texas History
Well-Drilling Device. (open access)

Well-Drilling Device.

Patent for well drilling device with new and useful improvements in well-drilling device for simultaneously drilling the main hole and an advance or "rat-tail" hole.
Date: March 1, 1921
Creator: Smith, Primus W. & Bookhout, John J.
Object Type: Patent
System: The Portal to Texas History
Well-Drilling Bit. (open access)

Well-Drilling Bit.

Patent for Well-Drilling Bit designed to cut faster, disassemble for easier sharpening, and reduce cost.
Date: June 20, 1921
Creator: Smith, Primus W.
Object Type: Patent
System: The Portal to Texas History
Drill-Bit (open access)

Drill-Bit

Patent for new improvement in drill-bits. The object of the invention is to "provide the driller with advanced knowledge of the formation into which he is about to extend his main hole".
Date: January 11, 1921
Creator: Smith, Primus W.; Bookhout, John J. & Monce, Edwin W.
Object Type: Patent
System: The Portal to Texas History